{"id":761,"date":"2024-11-17T01:23:35","date_gmt":"2024-11-16T17:23:35","guid":{"rendered":"https:\/\/blog.sssn.tech\/?p=761"},"modified":"2024-11-17T01:24:40","modified_gmt":"2024-11-16T17:24:40","slug":"%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0-%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/blog.sssn.tech\/?p=761","title":{"rendered":"[\u5168\u7a0b\u5b66\u4e60\u7b14\u8bb0]-\u8f6f\u4ef6\u8bbe\u8ba1\u6a21\u5f0f"},"content":{"rendered":"<h1>\u8bbe\u8ba1\u6a21\u5f0f\u6982\u8ff0<\/h1>\n<p>\u8bbe\u8ba1\u6a21\u5f0f\u662f\u4e00\u5957\u88ab\u53cd\u590d\u4f7f\u7528\u3001\u591a\u6570\u4eba\u77e5\u6653\u7684\u3001\u7ecf\u8fc7\u5206\u7c7b\u7f16\u76ee\u7684\u3001\u4ee3\u7801\u8bbe\u8ba1\u7ecf\u9a8c\u7684\u603b\u7ed3, \u4f7f\u7528\u8bbe\u8ba1\u6a21\u5f0f\u662f\u4e3a\u4e86\u53ef\u590d\u7528\u4ee3\u7801, \u8ba9\u4ee3\u7801\u66f4\u5bb9\u6613\u88ab\u4ed6\u4eba\u7406\u89e3\u3001\u4fdd\u8bc1\u4ee3\u7801\u53ef\u9760\u6027\u7b49. <\/p>\n<p><strong>\u8bbe\u8ba1\u6a21\u5f0f\u56db\u8981\u7d20<\/strong>: <\/p>\n<ul>\n<li>\u6a21\u5f0f\u540d\u79f0<\/li>\n<li>\u95ee\u9898<\/li>\n<li>\u89e3\u51b3\u65b9\u6848<\/li>\n<li>\u6548\u679c<\/li>\n<\/ul>\n<p><strong>\u8bbe\u8ba1\u6a21\u5f0f\u5206\u7c7b<\/strong><\/p>\n<p>\u6839\u636e\u76ee\u7684\u5206\u4e3a<\/p>\n<ul>\n<li>\u521b\u5efa\u578b\u6a21\u5f0f: \u7528\u4e8e\u5bf9\u8c61\u521b\u5efa<\/li>\n<li>\u7ed3\u6784\u578b\u6a21\u5f0f: \u7528\u4e8e\u5904\u7406\u7c7b\u548c\u5bf9\u8c61\u7684\u7ec4\u5408<\/li>\n<li>\u884c\u4e3a\u578b\u6a21\u5f0f: \u7528\u4e8e\u63cf\u8ff0\u7c7b\u548c\u5bf9\u8c61\u7684\u4ea4\u4e92\u548c\u804c\u8d23<\/li>\n<\/ul>\n<p>\u6839\u636e\u5904\u7406\u5bf9\u8c61\u5206\u4e3a<\/p>\n<ul>\n<li>\u7c7b\u6a21\u5f0f: \u5904\u7406\u7c7b\u548c\u5b50\u7c7b\u7684\u5173\u7cfb, <strong>\u901a\u5e38\u901a\u8fc7\u7ee7\u627f\u5efa\u7acb, \u5728\u7f16\u8bd1\u65f6\u786e\u5b9a, \u662f\u9759\u6001\u7684<\/strong><\/li>\n<li>\u5bf9\u8c61\u6a21\u5f0f: \u5904\u7406\u5bf9\u8c61\u95f4\u7684\u5173\u7cfb, \u5728\u8fd0\u884c\u65f6\u53d8\u5316, \u662f\u52a8\u6001\u7684<\/li>\n<\/ul>\n<h1>\u7c7b\u95f4\u5173\u7cfb<\/h1>\n<h2>\u4f9d\u8d56(dependency)\u5173\u7cfb(\u865a\u7ebf)<\/h2>\n<p>\u4e00\u4e2a\u7c7bA\u4f7f\u7528\u5230\u4e86\u53e6\u4e00\u4e2a\u7c7bB, \u4f46\u8fd9\u4e2a\u5173\u7cfb\u662f\u5076\u7136\u7684, \u4e34\u65f6\u7684, \u975e\u5e38\u5f31\u7684, \u7c7bB\u7684\u53d8\u5316\u4f1a\u5f71\u54cd\u5230A<\/p>\n<p>A<strong>\u5076\u7136\u77e5\u9053<\/strong>\u4e86B<\/p>\n<p>\u5728\u4ee3\u7801\u5c42\u9762, \u8868\u73b0\u4e3aA\u5728\u65b9\u6cd5\u4e2d\u4f7f\u7528\u5230\u4e86B\u7c7b, \u5982\u5c40\u90e8\u53d8\u91cf, \u65b9\u6cd5\u4e2d\u7684\u53c2\u6570, \u5bf9\u9759\u6001\u65b9\u6cd5\u7684\u8c03\u7528\u7b49<\/p>\n<pre><code class=\"language-java\">\/\/ \u4f9d\u8d56\u5173\u7cfb\u7684\u4f8b\u5b50, A\u4f9d\u8d56B\nclass A {\n  \/\/ A\u5728\u65b9\u6cd5\u4e2d\u8c03\u7528\u4e86B\n  public void func1(B b){\n    ...\n  }\n  \/\/ A\u7684\u65b9\u6cd5\u4e2d\u6709B\u4f5c\u4e3a\u5c40\u90e8\u53d8\u91cf\n  public void func2() {\n    B b = new B();\n    ...\n  }\n}\nclass B {...}\n<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241028091602221.png\" alt=\"image-20241028091602221\" style=\"zoom:66%;\" \/><\/p>\n<p>\u81ea\u8eab\u4f9d\u8d56: \u5305\u542b\u5bf9\u81ea\u8eab\u7c7b\u7684\u5c40\u90e8\u53d8\u91cf, \u65b9\u6cd5\u53c2\u6570\u7b49. \u5e38\u89c1\u4e8e\u94fe\u8868<\/p>\n<p>\u53cc\u5411\u4f9d\u8d56: AB\u4e92\u76f8\u4f9d\u8d56, \u5f62\u6210\u4f9d\u8d56\u73af. \u8fd9\u79cd\u4f9d\u8d56\u4f1a\u5f62\u6210\u5f3a\u8026\u5408.<\/p>\n<h2>\u5173\u8054(association)\u5173\u7cfb(\u5b9e\u7ebf)<\/h2>\n<p>\u4e24\u4e2a\u7c7bAB, A\u957f\u671f\u4e0eB\u5b58\u5728\u56fa\u5b9a\u7684\u5bf9\u5e94\u5173\u7cfb. \u6bd4\u4f9d\u8d56\u66f4\u5f3a\u7684\u5173\u7cfb. \u6bd4\u5982\u6211\u548c\u6211\u7684\u670b\u53cb, \u516c\u53f8\u548c\u5458\u5de5, \u5e08\u5085\u548c\u5f92\u5f1f. \u5177\u6709\u957f\u671f\u6027\u548c\u5e73\u7b49\u6027.<\/p>\n<p>\u5728\u4ee3\u7801\u5c42\u9762, <strong>\u901a\u5e38\u4f5c\u4e3a\u5c5e\u6027\u5b58\u5728<\/strong><\/p>\n<pre><code class=\"language-java\">\/\/ \u5173\u8054\u5173\u7cfb\u7684\u4f8b\u5b50, A\u957f\u671f\u77e5\u9053B(\u975e\u5076\u7136)\nclass A {\n  private B b;\n  public void func1() {\n    ...\n  }\n}\nclass B {...}<\/code><\/pre>\n<p>\u5173\u8054\u5173\u7cfb\u4e5f\u53ef\u4ee5\u5206\u4e3a\u5355\u5411\u5173\u8054, \u81ea\u8eab\u5173\u8054\u548c\u53cc\u5411\u5173\u8054<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241028093251503.png\" alt=\"image-20241028093251503\" style=\"zoom: 67%;\" \/><\/p>\n<h2>\u805a\u5408\/\u805a\u96c6(aggregaion)\u5173\u7cfb(\u7a7a\u5fc3\u68f1\u5f62)<\/h2>\n<p>\u5f53\u5bf9\u8c61B\u88ab\u52a0\u5165A\u4e2d, \u6210\u4e3aA\u7684\u7ec4\u6210\u90e8\u5206\u65f6, AB\u4e4b\u95f4\u4e3a\u805a\u5408\u5173\u7cfb. \u805a\u5408\u5173\u7cfb\u662f<strong>\u5173\u8054\u5173\u7cfb\u7684\u4e00\u79cd\u7279\u4f8b<\/strong>. <\/p>\n<p>\u805a\u5408\u5f3a\u8c03\u6574\u4f53\u4e0e\u90e8\u5206, \u62e5\u6709\u7684\u5173\u7cfb. \u6574\u4f53\u4e0e\u90e8\u5206\u662f\u53ef\u5206\u79bb\u7684, \u53ef\u4ee5\u6709\u5404\u81ea\u7684\u751f\u547d\u5468\u671f. \u90e8\u5206\u53ef\u4ee5\u5c5e\u4e8e\u591a\u4e2a\u6574\u4f53\u5bf9\u8c61.<\/p>\n<p>\u4f8b\u5982: \u81ea\u884c\u8f66\u548c\u8f66\u628a, \u8f66\u8f6e, \u6447\u94c3. \u8ba1\u7b97\u673a\u548c\u4e3b\u677f, CPU, \u5185\u5b58, \u786c\u76d8. \u8bfe\u9898\u7ec4\u548c\u79d1\u7814\u4eba\u5458.<\/p>\n<p>\u5728\u4ee3\u7801\u5c42\u9762, \u805a\u5408\u5173\u7cfb\u548c\u5173\u8054\u5173\u7cfb\u662f\u4e00\u81f4\u7684. \u4f46\u5728\u903b\u8f91\u5c42\u9762, \u5173\u8054\u5173\u7cfb\u662f\u76f8\u540c\u5c42\u6b21, \u805a\u5408\u662f\u6574\u4f53\u2014\u2014\u90e8\u5206\u5c42\u6b21.<\/p>\n<pre><code class=\"language-java\">\/\/ \u805a\u5408\u5173\u7cfb\u7684\u4f8b\u5b50\n\/\/ \u805a\u5408\u5173\u7cfb\u5728\u4ee3\u7801\u4e0a\u548c\u5173\u8054\u5173\u7cfb\u4e00\u81f4\nclass A{\n  private B b; \n}\nclass B{...}<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241028184120722.png\" alt=\"image-20241028184120722\" style=\"zoom: 67%;\" \/><\/p>\n<h2>\u7ec4\u5408\/\u5408\u6210(composition)\u5173\u7cfb(\u5b9e\u5fc3\u68f1\u5f62)<\/h2>\n<p>\u7ec4\u5408\u4e5f\u662f\u5173\u8054\u5173\u7cfb\u7684\u4e00\u79cd\u7279\u4f8b, \u4f53\u73b0\u4e00\u79cd\u6bd4\u805a\u5408\u5173\u7cfb\u66f4\u5f3a\u7684\u5305\u542b\u5173\u7cfb, <strong>\u53c8\u79f0\u5f3a\u805a\u5408<\/strong>.<\/p>\n<p>\u6b64\u65f6, \u6574\u4f53\u4e0e\u90e8\u5206\u662f\u4e0d\u53ef\u5206\u7684, <strong>\u6574\u4f53\u8d1f\u8d23\u90e8\u5206\u7684\u751f\u5b58\u4e0e\u6d88\u4ea1<\/strong>.<\/p>\n<pre><code class=\"language-java\">\/\/ \u7ec4\u5408\u5173\u7cfb\u7684\u4f8b\u5b50, A\u63a7\u5236B\u7684\u751f\u547d\u5468\u671f\nclass A {\n  private final B b;\n  public A() {\n    this.b = new B();\n  }\n}\n\/\/ B\u7684\u751f\u547d\u5468\u671f\u5b8c\u5168\u7531A\u63a7\u5236\nclass B {...}<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241028184638212.png\" alt=\"image-20241028184638212\" style=\"zoom: 50%;\" \/><\/p>\n<h2>\u6cdb\u5316(generalization)\u5173\u7cfb(\u7a7a\u5fc3\u4e09\u89d2\u5b9e\u7ebf)<\/h2>\n<p>\u6cdb\u5316\u6307\u4e00\u822c\u4e0e\u7279\u6b8a, \u4e00\u822c\u4e0e\u5177\u4f53\u4e4b\u95f4\u7684\u5173\u7cfb.<\/p>\n<p>\u6bd4\u5982\u72d7\u662f\u5bf9\u52a8\u7269\u7684\u5177\u4f53\u63cf\u8ff0.<\/p>\n<p>\u5728\u4ee3\u7801\u5c42\u9762, \u6cdb\u5316\u662f\u901a\u8fc7\u7ee7\u627f\u5b9e\u73b0\u7684.<\/p>\n<pre><code class=\"language-java\">\/\/ \u6cdb\u5316\u7684\u4f8b\u5b50\nclass B {...}\nclass A extends B {\n  ...\n}<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241028185013016.png\" alt=\"image-20241028185013016\" style=\"zoom: 67%;\" \/><\/p>\n<h2>\u5b9e\u73b0(realization)\u5173\u7cfb(\u7a7a\u5fc3\u4e09\u89d2\u865a\u7ebf)<\/h2>\n<p>\u5b9e\u73b0\u662f\u7c7b\u4e0e\u63a5\u53e3\u7684\u5173\u7cfb, \u8868\u793a\u7c7b\u662f\u63a5\u53e3\u6240\u6709\u7279\u5f81\u548c\u884c\u4e3a\u7684\u5b9e\u73b0.<\/p>\n<p><strong>\u6cdb\u5316\u548c\u5b9e\u73b0\u7684\u533a\u522b\u5728\u4e8e\u5b50\u7c7b\u662f\u5426\u7ee7\u627f\u4e86\u7236\u7c7b\u7684\u5b9e\u73b0, \u5982\u679c\u7ee7\u627f\u4e86\u5219\u4e3a\u6cdb\u5316, \u53cd\u4e4b\u4e3a\u5b9e\u73b0.<\/strong><\/p>\n<p>\u5b9e\u73b0\u5728\u4ee3\u7801\u4e0a\u4e3b\u8981\u4f53\u73b0\u5728\u63a5\u53e3\u548c\u5b9e\u73b0\u7684\u5173\u952e\u5b57.<\/p>\n<pre><code class=\"language-java\">\/\/ \u5b9e\u73b0\u7684\u4f8b\u5b50\ninterface A {\n    \/\/ \u4e0d\u80fd\u4fee\u6539, \u9690\u5f0f\u662f public static final \n    int value = 1; \n    \/\/ \u53ea\u6709\u65b9\u6cd5\u58f0\u660e, \u6ca1\u6709\u5b9e\u73b0\u7528\u6765\u7ee7\u627f\n    void doSomething();  \n}\nclass B implements A {\n    @Override\n    public void doSomething() {\n        \/\/ \u5fc5\u987b\u63d0\u4f9b\u5b9e\u73b0\n    }\n}<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241028185208134.png\" alt=\"image-20241028185208134\" style=\"zoom:66%;\" \/><\/p>\n<p>\u4e0a\u8ff0\u51e0\u79cd\u5173\u7cfb\u7684\u5f3a\u5ea6\u4f9d\u6b21\u4e3a:<\/p>\n<p>\u6cdb\u5316\/\u5b9e\u73b0 &gt; \u7ec4\u5408 &gt; \u805a\u5408 &gt; \u5173\u8054 &gt; \u4f9d\u8d56<\/p>\n<h1>\u9762\u5411\u5bf9\u8c61\u8bbe\u8ba1\u539f\u5219<\/h1>\n<p>\u9762\u5411\u5bf9\u8c61\u7684\u4e03\u5927\u539f\u5219\u4e0d\u662f\u4e92\u76f8\u5b64\u7acb\u7684, \u5f7c\u6b64\u95f4\u4e92\u76f8\u5173\u8054. <\/p>\n<p>\u5927\u4f53\u4e0a\u53ef\u4ee5\u505a\u51fa\u8fd9\u6837\u7684\u5206\u7c7b:<\/p>\n<ul>\n<li><strong>\u8bbe\u8ba1\u76ee\u6807<\/strong>: \u5f00\u95ed\u539f\u5219, \u91cc\u6c0f\u66ff\u6362\u539f\u5219, \u8fea\u7c73\u7279\u539f\u5219<\/li>\n<li><strong>\u8bbe\u8ba1\u65b9\u6cd5<\/strong>: \u5355\u4e00\u804c\u8d23\u539f\u5219, \u63a5\u53e3\u5206\u79bb\u539f\u5219, \u4f9d\u8d56\u5012\u7f6e\u539f\u5219, \u7ec4\u5408\/\u805a\u5408\u590d\u7528\u539f\u5219<\/li>\n<\/ul>\n<h2>\u5f00\u95ed\u539f\u5219<\/h2>\n<p><strong>Open-Closed Principle, OCP<\/strong><\/p>\n<p>\u8f6f\u4ef6\u5b9e\u4f53(\u6a21\u5757, \u7c7b, \u65b9\u6cd5\u7b49)\u5e94\u5bf9\u6269\u5c55\u5f00\u653e, \u5bf9\u4fee\u6539\u5173\u95ed. <\/p>\n<p>\u5b9e\u73b0\u65b9\u6cd5:<\/p>\n<ul>\n<li>\u5c06\u4e0d\u53d8\u7684\u90e8\u5206\u62bd\u8c61\u6210\u4e0d\u53d8\u7684\u63a5\u53e3, \u7528\u63a5\u53e3\u5e94\u5bf9\u672a\u6765\u7684\u6269\u5c55<\/li>\n<li>\u63a5\u53e3\u7684\u6700\u5c0f\u529f\u80fd\u8bbe\u8ba1\u539f\u5219: \u539f\u6709\u7684\u63a5\u53e3\u8981\u4e0d\u53ef\u4ee5\u5e94\u5bf9\u672a\u6765\u7684\u6269\u5c55, \u8981\u4e0d\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u65b0\u7684\u63a5\u53e3\u6765\u5b9e\u73b0<\/li>\n<li>\u6a21\u5757\u4e4b\u95f4\u8c03\u7528\u901a\u8fc7\u63a5\u53e3\u8fdb\u884c<\/li>\n<\/ul>\n<p>\u63a5\u53e3\u53ef\u4ee5\u590d\u7528, \u4f46\u63a5\u53e3\u7684\u5b9e\u73b0\u4e0d\u4e00\u5b9a\u80fd\u88ab\u590d\u7528. \u63a5\u53e3\u662f\u7a33\u5b9a\u7684, \u5173\u95ed\u7684, \u4f46\u63a5\u53e3\u7684\u5b9e\u73b0\u662f\u53ef\u53d8\u7684, \u5f00\u653e\u7684. \u53ef\u4ee5\u901a\u8fc7\u5bf9\u63a5\u53e3\u7684\u4e0d\u540c\u5b9e\u73b0\u548c\u7c7b\u7684\u7ee7\u627f\u4e3a\u7cfb\u7edf\u589e\u52a0\u65b0\u7684\u6216\u6539\u53d8\u539f\u6709\u7684\u529f\u80fd, \u5b9e\u73b0\u8f6f\u4ef6\u7cfb\u7edf\u7684\u67d4\u6027\u6269\u5c55.<\/p>\n<p>\u7cfb\u7edf\u662f\u5426\u6709\u826f\u597d\u7684\u63a5\u53e3(\u62bd\u8c61)\u8bbe\u8ba1\u662f\u5224\u65ad\u8f6f\u4ef6\u7cfb\u7edf\u662f\u5426\u6ee1\u8db3\u5f00\u95ed\u539f\u5219\u7684\u91cd\u8981\u6807\u51c6. \u73b0\u5728\u591a\u628a\u5f00\u95ed\u539f\u5219\u7b49\u540c\u4e8e\u9762\u5411\u63a5\u53e3\u7684\u8f6f\u4ef6\u8bbe\u8ba1.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241028202657337.png\" alt=\"image-20241028202657337\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li>\n<p>Client\u5bf9\u4e8eServer\u63d0\u4f9b\u7684\u63a5\u53e3\u662f\u4fee\u6539\u5173\u95ed\u7684<\/p>\n<p>Client\u4f9d\u8d56\u7684AbsServer\u63a5\u53e3\u4e00\u65e6\u5b9a\u4e49\u5c31\u4e0d\u4f1a\u8f7b\u6613\u4fee\u6539<\/p>\n<\/li>\n<li>\n<p>Client\u5bf9\u4e8eServer\u7684\u65b0\u63a5\u53e3\u662f\u6269\u5c55\u5f00\u653e\u7684<\/p>\n<\/li>\n<\/ul>\n<p>\u53ef\u4ee5\u521b\u5efa\u65b0\u7684\u7c7b\u6765\u5b9e\u73b0AbsServer\u63a5\u53e3<\/p>\n<p><strong>\u4ee5\u4e0a\u4e24\u70b9\u8bf4\u660eClient\u7684\u7a33\u5b9a\u6027\u9ad8, \u4e0d\u56e0Server\u5b9e\u73b0\u7684\u53d8\u5316\u800c\u6539\u53d8<\/strong>, \u4f53\u73b0\u4e86\u9762\u5411\u63a5\u53e3\u7f16\u7a0b\u7684\u539f\u5219, \u964d\u4f4e\u4e86\u8026\u5408\u5ea6<\/p>\n<p>\u5f00\u95ed\u539f\u5219\u6709\u76f8\u5bf9\u6027, \u8f6f\u4ef6\u7cfb\u7edf\u7684\u6784\u5efa\u4f1a\u7ecf\u5386\u4e0d\u65ad\u91cd\u6784,100%\u6ee1\u8db3\u5f00\u95ed\u539f\u5219\u662f\u975e\u5e38\u56f0\u96be\u7684. \u4f46\u5728\u8bbe\u8ba1\u8fc7\u7a0b\u4e2d, \u53ef\u4ee5\u5c3d\u91cf\u63a5\u8fd1\u6ee1\u8db3.<\/p>\n<h2>\u91cc\u6c0f\u66ff\u6362\u539f\u5219<\/h2>\n<p><strong>Liskov Substitution Principle, LSP<\/strong><\/p>\n<p>\u6240\u6709\u5f15\u7528\u57fa\u7c7b\u7684\u5730\u65b9\u5fc5\u987b\u80fd\u900f\u660e\u7684\u4f7f\u7528\u5176\u6d3e\u751f\u7c7b\u7684\u5bf9\u8c61<\/p>\n<ul>\n<li>\u4e0d\u5e94\u8be5\u5728\u4ee3\u7801\u4e2d\u7528if-else\u5224\u65ad\u6d3e\u751f\u7c7b\u7c7b\u578b<\/li>\n<li>\u6d3e\u751f\u7c7b\u5e94\u5f53\u53ef\u4ee5\u66ff\u6362\u6240\u6709\u57fa\u7c7b\u5bf9\u8c61\u51fa\u73b0\u7684\u5730\u65b9\u8fd8\u80fd\u6b63\u5e38\u5de5\u4f5c<\/li>\n<\/ul>\n<p>\u4e00\u4e2a\u8fdd\u53cd\u4e86LSP\u7684\u4f8b\u5b50:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241028205119439.png\" alt=\"image-20241028205119439\" style=\"zoom:33%;\" \/><\/p>\n<p>\u5982\u679c\u4e1a\u52a1\u4ee3\u7801\u4e2d\u6709<\/p>\n<pre><code class=\"language-cpp\">void g(Rectangle&amp; r) {\n  r.setHeight(5);\n  r.setWidth(4);\n}<\/code><\/pre>\n<p>\u5219\u5bf9\u4e8e\u6269\u5c55\u7c7bSquare, \u51fd\u6570g\u7684\u6267\u884c\u662f\u4e0d\u7b26\u5408\u9884\u671f\u7684. \u8fd9\u8fdd\u53cd\u4e86LSP.<\/p>\n<p>\u8981\u6539\u6b63\u8fd9\u4e2a\u8bbe\u8ba1, \u53ef\u4ee5\u8003\u8651\u4e24\u79cd\u89e3\u51b3\u65b9\u6848:<\/p>\n<ul>\n<li>\u521b\u5efa\u65b0\u7684\u62bd\u8c61\u7c7bC, \u4f5c\u4e3a\u4e24\u4e2a\u5177\u4f53\u7c7b\u7684\u57fa\u7c7b, \u5c06\u5177\u4f53\u7c7b\u7684\u5171\u540c\u884c\u4e3a\u79fb\u52a8\u5230C\u4e2d<\/li>\n<li>\u653e\u5f03\u7ee7\u627f, \u6539\u4e3a\u5173\u8054<\/li>\n<\/ul>\n<p>\u6bd4\u5982\u672c\u4f8b\u4e2d, \u53ef\u4ee5\u6784\u9020\u4e00\u4e2a\u62bd\u8c61\u7684\u56db\u8fb9\u5f62\u7c7b. <\/p>\n<p>\u4e00\u4e2a\u4e00\u822c\u6027\u7684\u6307\u5bfc\u539f\u5219\u662f, \u5c3d\u91cf\u4ece\u62bd\u8c61\u7c7b\u7ee7\u627f. \u5728\u7cfb\u7edf\u7684\u7ee7\u627f\u6811\u4e2d, \u53f6\u5b50\u7ed3\u70b9\u6700\u597d\u662f\u5177\u4f53\u7c7b, \u6811\u679d\u8282\u70b9\u6700\u597d\u662f\u62bd\u8c61\u7c7b\u548c\u63a5\u53e3.<\/p>\n<p>\u5728\u8fdb\u884c\u8bbe\u8ba1\u7684\u65f6\u5019, <strong>\u5c3d\u91cf\u4ece\u62bd\u8c61\u7c7b\u7ee7\u627f, \u800c\u4e0d\u4ece\u5177\u4f53\u7c7b\u7ee7\u627f.<\/strong><\/p>\n<h2>\u8fea\u7c73\u7279\u539f\u5219<\/h2>\n<p><strong>\u6700\u5c11\u77e5\u9053\u539f\u5219, Law of Demeter, LoD<\/strong><\/p>\n<ul>\n<li>\u4e00\u4e2a\u8f6f\u4ef6\u7684\u5b9e\u4f53\u5e94\u8be5\u5c3d\u53ef\u80fd\u7684\u5c11\u4e0e\u5176\u4ed6\u5b9e\u4f53\u76f8\u4e92\u4f5c\u7528(\u53ea\u548c\u201c\u670b\u53cb\u201d\u901a\u4fe1)<\/li>\n<li>\u4e00\u4e2a\u8f6f\u4ef6\u5b9e\u4f53\u5bf9\u5176\u4ed6\u5b9e\u4f53\u7684\u77e5\u8bc6\u8d8a\u5c11\u8d8a\u597d<\/li>\n<\/ul>\n<p>\u4e0a\u8ff0\u539f\u5219\u4e2d\u7684\u670b\u53cb\u53ef\u4ee5\u662f<\/p>\n<ul>\n<li>\u5bf9\u8c61\u672c\u8eab(this)<\/li>\n<li>\u4ee5\u53c2\u6570\u5f62\u5f0f\u4f20\u5165\u7684\u5bf9\u8c61(\u4f9d\u8d56)<\/li>\n<li>\u76f4\u63a5\u5f15\u7528\u7684\u5bf9\u8c61(\u5173\u8054)<\/li>\n<li>\u805a\u96c6\u4e2d\u7684\u5143\u7d20<\/li>\n<li>\u5f53\u524d\u5bf9\u8c61\u521b\u5efa\u7684\u5bf9\u8c61(\u7ec4\u5408)<\/li>\n<\/ul>\n<p>\u9700\u8981\u6ce8\u610f:<\/p>\n<ul>\n<li>\u670b\u53cb\u4e5f\u662f\u6709\u8ddd\u79bb\u7684, \u7c7b\u8981\u5c3d\u91cf\u7f9e\u6da9, \u591a\u4f7f\u7528private\u548cprotected<\/li>\n<\/ul>\n<h2>\u5355\u4e00\u804c\u8d23\u539f\u5219<\/h2>\n<p><strong>Single Responsibility, SRP<\/strong><\/p>\n<p>\u6c38\u8fdc\u4e0d\u8981\u8ba9\u4e00\u4e2a\u7c7b\u5b58\u5728\u591a\u4e2a\u6539\u53d8\u7684\u7406\u7531, \u5373, \u5982\u679c\u8981\u6539\u53d8\u4e00\u4e2a\u7c7b, \u6539\u53d8\u7684\u7406\u7531\u53ea\u80fd\u6709\u4e00\u4e2a.<\/p>\n<p>SRP\u63d0\u5021\u4e00\u4e2a\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u5e94\u8be5\u4e00\u8d77\u4fee\u6539, \u6216\u8005\u4e00\u8d77\u4fdd\u6301\u4e0d\u53d8, \u4e0d\u5e94\u8be5\u5b58\u5728\u8fd9\u6837\u7684\u60c5\u51b5: \u63d0\u51fa\u4e00\u4e2a\u9700\u6c42, \u53ea\u4fee\u6539\u4e00\u90e8\u5206\u4ee3\u7801\u7684\u5185\u5bb9.<\/p>\n<p>\u6765\u770b\u4e00\u4e2a\u597d\u7684\u8bbe\u8ba1\u5b9e\u4f8b, \u67d0\u4e2a\u8ba2\u5355\u7c7b\u7684\u5b9e\u73b0:<\/p>\n<pre><code class=\"language-java\">\/\/ \u597d\u7684SRP\u8bbe\u8ba1\u793a\u4f8b\nclass Order {\n    private String orderId;\n    private List&lt;OrderItem&gt; items;\n    private double totalAmount;\n\n    public void addItem(OrderItem item) {\n        ...\n    }\n\n    public void removeItem(OrderItem item) {\n        ..\n    }\n\n    private void recalculateTotal() {\n        ...\n    }\n}<\/code><\/pre>\n<p>\u8fd9\u4e2a\u8bbe\u8ba1\u662f\u597d\u7684, \u56e0\u4e3a<\/p>\n<ul>\n<li>\u8fd9\u4e9b\u65b9\u6cd5\u548c\u5c5e\u6027\u670d\u52a1\u4e8e\u540c\u4e00\u4e2a\u76ee\u7684: \u7ba1\u7406\u8ba2\u5355\u7684\u57fa\u672c\u4fe1\u606f\u548c\u6761\u76ee<\/li>\n<li>\u4ed6\u4eec\u901a\u5e38\u56e0\u540c\u4e00\u4e2a\u539f\u56e0\u6539\u53d8(\u6bd4\u5982\u8ba2\u5355\u4e1a\u52a1\u7684\u89c4\u5219\u53d8\u5316)<\/li>\n<\/ul>\n<p>\u4e00\u4e2a\u8fdd\u53cdSRP\u7684\u4f8b\u5b50<\/p>\n<pre><code class=\"language-java\">class Order {\n    private String orderId;\n    private List&lt;OrderItem&gt; items;\n    private double totalAmount;\n\n    \/\/ \u8ba2\u5355\u6838\u5fc3\u529f\u80fd\n    public void addItem(OrderItem item) { ... }\n    public void removeItem(OrderItem item) { ... }\n\n    \/\/ \u8fdd\u53cdSRP\u7684\u90e8\u5206\uff1a\u8ba2\u5355\u6301\u4e45\u5316\n    public void saveToDatabase() {\n        \/\/ \u4f7f\u7528\u7279\u5b9a\u6570\u636e\u5e93API\u4fdd\u5b58\u8ba2\u5355\n    }\n\n    \/\/ \u8fdd\u53cdSRP\u7684\u90e8\u5206\uff1a\u8ba2\u5355\u5c55\u793a\n    public String generateOrderHTML() {\n        \/\/ \u751f\u6210\u8ba2\u5355\u7684HTML\u8868\u793a\n    }\n}<\/code><\/pre>\n<p>\u5728\u4e0a\u4f8b\u4e2d, \u6570\u636e\u5e93\u7684\u6539\u53d8, \u7f51\u9875\u7684\u6539\u53d8\u90fd\u4f1a\u4fee\u6539\u7c7b\u7684\u90e8\u5206\u529f\u80fd, \u8fd9\u8fdd\u53cd\u4e86SRP.<\/p>\n<h2>\u63a5\u53e3\u5206\u79bb\u539f\u5219<\/h2>\n<p><strong>Interface Segregation Principle, SRP<\/strong><\/p>\n<ul>\n<li>\u63a5\u53e3\u7684\u8bbe\u8ba1\u5e94\u8be5\u9075\u5faa\u6700\u5c0f\u539f\u5219<\/li>\n<li>\u4e00\u4e2a\u63a5\u53e3a\u7ee7\u627f\u81eab, \u5982\u679ca\u7ee7\u627f\u6765\u7684\u65b9\u6cd5\u4e2d\u6709\u4e0d\u9700\u8981\u7684\u90e8\u5206, \u5219\u79f0\u63a5\u53e3a\u88abb\u6c61\u67d3\u4e86, \u5e94\u8be5\u91cd\u65b0\u8bbe\u8ba1<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241029183618928.png\" alt=\"image-20241029183618928\" style=\"zoom:33%;\" \/><\/p>\n<p>CommonDoor\u4e0d\u5f97\u4e0d\u5b9e\u73b0\u4e00\u4e2a\u7528\u4e0d\u5230\u7684alarm\u65b9\u6cd5, \u8fd9\u8fdd\u53cdISP.<\/p>\n<p>\u5355\u4e00\u804c\u8d23\u539f\u5219\u548c\u63a5\u53e3\u9694\u79bb\u539f\u5219\u7684\u5171\u540c\u70b9<\/p>\n<ul>\n<li>\u90fd\u662f\u4e3a\u4e86\u63d0\u9ad8\u5185\u805a\u6027, \u964d\u4f4e\u8026\u5408\u6027, \u4f53\u73b0\u5c01\u88c5\u601d\u60f3<\/li>\n<li>\u8868\u73b0\u51fa\u6765\u90fd\u662f\u7ea6\u675f\u63a5\u53e3\u5230\u6700\u5c0f<\/li>\n<\/ul>\n<h2>\u4f9d\u8d56\u5012\u7f6e\u539f\u5219<\/h2>\n<p><strong>Dependency Inversion Principle, DIP<\/strong><\/p>\n<ul>\n<li>\n<p>\u9ad8\u5c42\u6a21\u5757\u4e0d\u5e94\u8be5\u4f9d\u8d56\u5e95\u5c42\u6a21\u5757, \u4e8c\u8005\u90fd\u5e94\u8be5\u4f9d\u8d56\u4e8e\u62bd\u8c61<\/p>\n<\/li>\n<li>\n<p>\u62bd\u8c61\u4e0d\u5e94\u8be5\u4f9d\u8d56\u7ec6\u8282, \u7ec6\u8282\u5e94\u8be5\u4f9d\u8d56\u62bd\u8c61<\/p>\n<\/li>\n<\/ul>\n<p>\u8fd9\u6837\u7684\u8bbe\u8ba1\u662f\u9519\u8bef\u7684, \u5bf9\u5e95\u5c42\u7684\u4fee\u6539\u4f1a\u5f71\u54cd\u4e0a\u5c42<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241029185037987.png\" alt=\"image-20241029185037987\" style=\"zoom:33%;\" \/><\/p>\n<p>\u5e94\u8be5\u5728\u9ad8\u5c42\u6a21\u5757\u4e0e\u4f4e\u5c42\u6a21\u5757\u4e4b\u95f4\u5f15\u5165\u4e00\u4e2a\u62bd\u8c61\u63a5\u53e3\u5c42<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241029185112402.png\" alt=\"image-20241029185112402\" style=\"zoom:33%;\" \/><\/p>\n<h3>\u542f\u53d11: \u4f9d\u8d56\u4e8e\u62bd\u8c61<\/h3>\n<ul>\n<li>\n<p>\u4efb\u4f55\u5bf9\u8c61\u90fd\u4e0d\u5e94\u8be5\u6301\u6709\u4e00\u4e2a\u5177\u4f53\u7c7b\u7684\u6307\u9488\u6216\u8005\u5f15\u7528<\/p>\n<\/li>\n<li>\n<p>\u4efb\u4f55\u7c7b\u90fd\u4e0d\u5e94\u8be5\u4ece\u5177\u4f53\u7c7b\u6d3e\u751f<\/p>\n<\/li>\n<\/ul>\n<h3>\u542f\u53d12: \u8bbe\u8ba1\u63a5\u53e3, \u800c\u975e\u8bbe\u8ba1\u5b9e\u73b0<\/h3>\n<ul>\n<li>\u4f7f\u7528\u7ee7\u627f\u907f\u514d\u5bf9\u5177\u4f53\u7c7b\u7684\u76f4\u63a5\u7ed1\u5b9a<\/li>\n<\/ul>\n<h3>\u542f\u53d13: \u907f\u514d\u4f20\u9012\u4f9d\u8d56<\/h3>\n<ul>\n<li>\u907f\u514d\u9ad8\u5c42\u4f9d\u8d56\u5e95\u5c42<\/li>\n<li>\u4f7f\u7528\u62bd\u8c61\u7c7b\/\u63a5\u53e3\u6765\u6d88\u9664\u4f20\u9012\u4f9d\u8d56<\/li>\n<\/ul>\n<h2>\u7ec4\u5408\/\u805a\u5408\u590d\u7528\u539f\u5219<\/h2>\n<p><strong>Composite\/Aggregate Reuse Principle, CARP, CRP<\/strong><\/p>\n<p>\u5c3d\u91cf\u4f7f\u7528\u7ec4\u5408\/\u805a\u5408\u800c\u975e\u7ee7\u627f\u6765\u8fbe\u5230\u590d\u7528\u7684\u76ee\u7684<\/p>\n<p>\u4f7f\u7528\u7ee7\u627f\u7684\u524d\u63d0:<\/p>\n<ul>\n<li>\u6d3e\u751f\u7c7b\u662f\u57fa\u7c7b\u7684\u4e00\u4e2a\u7279\u6b8a\u79cd\u7c7b, \u800c\u4e0d\u662f\u4e00\u4e2a\u89d2\u8272, \u5373, \u4e0d\u662fhas a, \u800c\u662fis a.<\/li>\n<li>\u6c38\u8fdc\u4e0d\u4f1a\u51fa\u73b0\u6d3e\u751f\u7c7b\u4e4b\u95f4\u7684\u7c7b\u578b\u8f6c\u6362. \u5982\u679c\u4e0d\u786e\u5b9a\u662f\u5426\u9700\u8981\u8f6c\u6362, \u5c31\u4e0d\u8981\u7ee7\u627f.<\/li>\n<li>\u6d3e\u751f\u7c7b\u662f\u57fa\u7c7b\u7684\u6269\u5c55, \u800c\u4e0d\u662f\u66ff\u6362\u548c\u6ce8\u9500. \u5982\u679c\u6d3e\u751f\u7c7b\u9700\u8981\u5927\u91cf\u66ff\u6362, \u5219\u4e0d\u5e94\u8be5\u8bbe\u8ba1.<\/li>\n<li>\u53ea\u6709\u5206\u7c7b\u5b66\u89d2\u5ea6\u4e0a\u6709\u610f\u4e49\u65f6, \u624d\u4f7f\u7528\u7ee7\u627f.<\/li>\n<\/ul>\n<hr \/>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241112230446477.png\" alt=\"image-20241112230446477\" style=\"zoom:33%;\" \/><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241114222647000.png\" alt=\"image-20241114222647000\" style=\"zoom:33%;\" \/><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241114222827760.png\" alt=\"image-20241114222827760\" style=\"zoom:33%;\" \/><\/p>\n<h1>\u521b\u5efa\u578b\u6a21\u5f0f<\/h1>\n<p>\u521b\u5efa\u578b\u6a21\u5f0f\u5173\u6ce8\u7684\u662f\u5bf9\u8c61\u7684\u521b\u5efa, \u7c7b\u7684\u5b9e\u4f8b\u5316\u8fdb\u884c\u62bd\u8c61\u548c\u5c01\u88c5, \u5206\u79bb\u4e86\u5bf9\u8c61\u521b\u5efa\u548c\u5bf9\u8c61\u4f7f\u7528.<\/p>\n<ul>\n<li>\u5ba2\u6237\u4e0d\u77e5\u9053\u5bf9\u8c61\u7684\u5177\u4f53\u7c7b\u662f\u4ec0\u4e48, \u9664\u975e\u770b\u6e90\u4ee3\u7801<\/li>\n<li>\u9690\u85cf\u4e86\u5bf9\u8c61\u5b9e\u4f8b\u662f\u5982\u4f55\u88ab\u521b\u5efa\u548c\u7ec4\u7ec7\u7684<\/li>\n<li>\u9700\u8981new\u8fd0\u7b97\u7b26\u7684\u65f6\u5019, \u5c31\u53ef\u4ee5\u8003\u8651\u521b\u5efa\u578b\u6a21\u5f0f<\/li>\n<\/ul>\n<h2>\u7b80\u5355\u5de5\u5382\u6a21\u5f0f<\/h2>\n<p><strong>Simple Factory Pattern, \u9759\u6001\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f, Static Factory Pattern<\/strong><\/p>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u8003\u8651\u4e00\u4e2a\u7b80\u5355\u7684\u573a\u666f: \u6709\u4e00\u4e2a\u6309\u94ae\u57fa\u7c7b, \u7ee7\u627f\u51fa\u591a\u79cd\u4e0d\u540c\u5f62\u72b6\u7684\u6309\u94ae, \u6bd4\u5982\u5706\u5f62, \u77e9\u5f62\u7b49. \u5b50\u7c7b\u5728\u7ee7\u627f\u4e4b\u540e\u4f1a\u4fee\u6539\u90e8\u5206\u5c5e\u6027, <\/p>\n<p>\u6211\u4eec\u5e0c\u671b\u5728\u4f7f\u7528\u6309\u94ae\u65f6, \u4e0d\u9700\u8981\u77e5\u9053\u5177\u4f53\u6309\u94ae\u7c7b\u7684\u540d\u5b57, \u53ea\u9700\u8981\u77e5\u9053\u4e00\u4e2a\u53c2\u6570, \u5e76\u63d0\u4f9b\u4e00\u4e2a\u8c03\u7528\u65b9\u4fbf\u7684\u65b9\u6cd5, \u5c06\u8fd9\u4e00\u4e2a\u53c2\u6570\u4f20\u5165\u65b9\u6cd5, \u5373\u53ef\u8fd4\u56de\u4e00\u4e2a\u76f8\u5e94\u7684\u6309\u94ae\u5bf9\u8c61. <\/p>\n<p>\u5728\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u4e2d, <strong>\u53ef\u4ee5\u6839\u636e\u53c2\u6570\u7684\u4e0d\u540c\u8fd4\u56de\u4e0d\u540c\u7c7b\u7684\u5b9e\u4f8b<\/strong>. \u5373, \u4e13\u95e8\u5b9a\u4e49\u4e00\u4e2a\u7c7b, \u7528\u4ee5\u521b\u5efa\u5176\u4ed6\u7c7b\u7684\u5b9e\u4f8b, \u6240\u6709\u88ab\u521b\u5efa\u7684\u5b9e\u4f8b\u901a\u5e38\u6709\u5171\u540c\u7684\u7236\u4eb2.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241030170029216.png\" alt=\"image-20241030170029216\" style=\"zoom:33%;\" \/><\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<ul>\n<li><strong>Factory<\/strong>: \u5de5\u5382\u89d2\u8272, \u8d1f\u8d23\u5b9e\u73b0\u521b\u5efa\u6240\u6709\u5b9e\u4f8b\u7684\u5185\u90e8\u903b\u8f91<\/li>\n<li><strong>Product<\/strong>: \u62bd\u8c61\u4ea7\u54c1\u89d2\u8272, \u662f\u6240\u6709\u4ea7\u54c1\u7684\u7236\u7c7b<\/li>\n<li><strong>ConcreteProduct<\/strong>: \u5177\u4f53\u7684\u521b\u5efa\u76ee\u6807<\/li>\n<\/ul>\n<p>\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u7684\u8981\u70b9\u5728\u4e8e: \u5f53\u4f60\u9700\u8981\u4ec0\u4e48, \u5c31\u4f20\u5165\u4e00\u4e2a\u53c2\u6570\u6765\u83b7\u53d6\u60f3\u8981\u7684\u5bf9\u8c61, \u4f60\u65e0\u9700\u77e5\u9053\u5176\u4ed6\u7ec6\u8282.<\/p>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u5206\u79bb\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u4e3b\u8981\u4e1a\u52a1\u5904\u7406\u964d\u4f4e\u4e86\u8026\u5408\u5ea6<\/li>\n<li>\u5de5\u5382\u65b9\u6cd5\u662f\u9759\u6001\u65b9\u6cd5, \u4f7f\u7528\u5f88\u65b9\u4fbf<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u6700\u5927\u7684\u95ee\u9898\u662f\u5de5\u5382\u7c7b\u7684\u804c\u8d23\u76f8\u5bf9\u8fc7\u91cd<\/li>\n<li>\u589e\u52a0\u65b0\u7684\u4ea7\u54c1\u9700\u8981\u4fee\u6539\u5224\u65ad\u903b\u8f91, \u8fd9<strong>\u8fdd\u80cc\u5f00\u95ed\u539f\u5219<\/strong><\/li>\n<li>\u589e\u52a0\u4e86\u7cfb\u7edf\u4e2d\u7c7b\u7684\u4e2a\u6570<\/li>\n<li>\u9759\u6001\u5de5\u5382\u65b9\u6cd5\u5bfc\u81f4\u5de5\u5382\u89d2\u8272\u65e0\u6cd5\u5f62\u6210\u57fa\u4e8e\u7ee7\u627f\u7684\u7b49\u7ea7\u7ed3\u6784<\/li>\n<\/ul>\n<p><strong>\u9002\u7528\u8303\u56f4<\/strong><\/p>\n<ul>\n<li>\u5de5\u5382\u7c7b\u8d1f\u8d23\u521b\u5efa\u7684\u5bf9\u8c61\u8f83\u5c11<\/li>\n<li>\u5ba2\u6237\u7aef\u53ea\u77e5\u9053\u4f20\u5165\u5de5\u5382\u7c7b\u7684\u53c2\u6570, \u4e0d\u5173\u5fc3\u5982\u4f55\u521b\u5efa\u5bf9\u8c61<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u7684\u7b80\u5316<\/strong><\/p>\n<p>\u5728\u6709\u4e9b\u60c5\u51b5\u4e0b, \u5de5\u5382\u7c7b\u53ef\u4ee5\u7531\u62bd\u8c61\u4ea7\u54c1\u89d2\u8272\u626e\u6f14. \u5373, \u628a\u9759\u6001\u5de5\u5382\u65b9\u6cd5\u5199\u8fdb\u62bd\u8c61\u4ea7\u54c1\u4e2d.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241113223810239.png\" alt=\"image-20241113223810239\" style=\"zoom:33%;\" \/><\/p>\n<hr \/>\n<h2>\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f<\/h2>\n<p><strong>Factory Method Pattern, \u865a\u62df\u6784\u9020\u5668\u6a21\u5f0f, Virtual Constructor, \u591a\u6001\u5de5\u5382\u6a21\u5f0f, Polymorphic Factory, \u5de5\u5382\u6a21\u5f0f, Factory Pattern<\/strong><\/p>\n<p>\u5728\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u4e2d, \u53ea\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5de5\u5382\u7c7b, \u8fd9\u4e2a\u7c7b\u77e5\u9053\u6bcf\u4e00\u4e2a\u4ea7\u54c1\u5bf9\u8c61\u7684\u521b\u5efa\u7ec6\u8282, \u5e76\u51b3\u5b9a\u4f55\u65f6\u5b9e\u4f8b\u5316. <\/p>\n<p>\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u6700\u5927\u7684\u7f3a\u70b9\u662f\u5f53\u524d\u6709\u65b0\u4ea7\u54c1\u52a0\u5165\u7cfb\u7edf\u4e2d\u65f6, \u5fc5\u987b\u4fee\u6539\u5de5\u5382\u7c7b, \u52a0\u5165\u5fc5\u8981\u7684\u5904\u7406\u903b\u8f91, \u8fd9\u8fdd\u80cc\u4e86\u5f00\u95ed\u539f\u5219. <\/p>\n<h3>\u6a21\u5f0f\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241101141339371.png\" alt=\"image-20241101141339371\" style=\"zoom:33%;\" \/><\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u4e0a\u9762\u7684\u95ee\u9898, \u5bf9\u8be5\u7cfb\u7edf\u8fdb\u884c\u4fee\u6539:<\/p>\n<p>\u4e0d\u518d\u4f7f\u7528\u7edf\u4e00\u7684\u6309\u94ae\u5de5\u5382\u6765\u8d1f\u8d23\u4ea7\u54c1\u7684\u521b\u5efa, \u800c\u662f\u5c06\u5177\u4f53\u6309\u94ae\u7684\u521b\u5efa\u8fc7\u7a0b\u4ea4\u7ed9\u4e13\u95e8\u7684\u5de5\u5382\u5b50\u7c7b\u53d6\u5b8c\u6210.<\/p>\n<p>\u6211\u4eec\u5b9a\u4e49\u4e00\u4e2a\u62bd\u8c61\u7684\u6309\u94ae\u5de5\u5382\u7c7b, \u518d\u5b9a\u4e49\u5177\u4f53\u7684\u5de5\u5382\u7c7b\u7c7b\u5b8c\u6210\u5706\u5f62, \u77e9\u5f62, \u83f1\u5f62\u6309\u94ae\u7684\u521b\u5efa. \u8fd9\u4e9b\u5177\u4f53\u7684\u7c7b\u5b9e\u73b0\u4e86\u62bd\u8c61\u5de5\u5382\u7c7b\u4e2d\u5b9a\u4e49\u7684\u65b9\u6cd5, \u4ece\u800c\u4f7f\u5f97\u8fd9\u79cd\u7ed3\u6784\u53ef\u4ee5\u5728\u4e0d\u4fee\u6539\u5177\u4f53\u5de5\u5382\u7c7b\u7684\u60c5\u51b5\u4e0b\u5f15\u8fdb\u65b0\u7684\u4ea7\u54c1. \u8fd9\u66f4\u52a0\u7b26\u5408\u5f00\u95ed\u539f\u5219.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241101142338814.png\" alt=\"image-20241101142338814\" style=\"zoom:33%;\" \/><\/p>\n<p>\u5728\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u4e2d, \u5de5\u5382\u7236\u7c7b\u8d1f\u8d23\u5b9a\u4e49\u521b\u5efa\u4ea7\u54c1\u5bf9\u8c61\u7684\u516c\u5171\u63a5\u53e3, \u800c\u5de5\u5382\u5b50\u7c7b\u8d1f\u8d23\u751f\u4ea7\u5177\u4f53\u7684\u4ea7\u54c1\u5bf9\u8c61. <\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241101143304527.png\" alt=\"image-20241101143304527\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Product<\/strong>: \u62bd\u8c61\u4ea7\u54c1, \u5b9a\u4e49\u4ea7\u54c1\u7684<strong>\u63a5\u53e3<\/strong>, \u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u6240\u521b\u5efa\u5bf9\u8c61\u7684\u8d85\u7c7b\u578b<\/li>\n<li><strong>ConcreteProduct<\/strong>: \u5177\u4f53\u4ea7\u54c1, \u5b9e\u73b0\u4e86\u62bd\u8c61\u4ea7\u54c1\u7684\u63a5\u53e3, \u7531\u4e13\u95e8\u7684\u5177\u4f53\u5de5\u5382\u6784\u5efa<\/li>\n<li><strong>Factory<\/strong>: \u62bd\u8c61\u5de5\u5382, \u58f0\u660e\u4e86\u5de5\u5382\u65b9\u6cd5, \u8fd4\u56de\u4e00\u4e2a\u4ea7\u54c1, \u4e0e\u5177\u4f53\u5e94\u7528\u65e0\u5173<\/li>\n<li><strong>ConcreteFactory<\/strong>: \u5177\u4f53\u5de5\u5382, \u5b9e\u73b0\u4e86\u62bd\u8c61\u5de5\u5382\u7684\u65b9\u6cd5, \u8fd4\u56de\u5177\u4f53\u4ea7\u54c1\u5b9e\u4f8b<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u662f\u7b80\u5355\u5de5\u5382\u6a21\u5f0f\u7684\u63a8\u5e7f, \u4fdd\u7559\u4e86\u4f18\u70b9, \u514b\u670d\u4e86\u7f3a\u70b9. <\/p>\n<p>\u6838\u5fc3\u7684\u5de5\u5382\u7c7b\u4e0d\u518d\u8d1f\u8d23\u5177\u4f53\u4ea7\u54c1\u7684\u521b\u5efa, \u800c\u662f\u901a\u8fc7\u7ee7\u627f\u4ea4\u7ed9\u5b50\u7c7b\u53bb\u505a. \u8fd9\u4f7f\u5f97<strong>\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u53ef\u4ee5\u518d\u4e0d\u4fee\u6539\u5de5\u5382\u89d2\u8272\u7684\u60c5\u51b5\u4e0b\u5f15\u8fdb\u65b0\u4ea7\u54c1. \u8fd9\u7b26\u5408\u5f00\u95ed\u539f\u5219<\/strong>.<\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u5de5\u5382\u65b9\u6cd5\u5bf9\u5ba2\u6237\u900f\u660e, \u5ba2\u6237\u65e0\u9700\u5173\u5fc3\u7ec6\u8282, <strong>\u751a\u81f3\u65e0\u9700\u77e5\u9053\u7c7b\u540d<\/strong><\/li>\n<li>\u7cfb\u7edf\u52a0\u5165\u65b0\u4ea7\u54c1\u65f6, \u65e0\u9700\u4fee\u6539\u4ee3\u7801, <strong>\u5b8c\u5168\u7b26\u5408\u5f00\u95ed\u539f\u5219<\/strong><\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u5728\u6dfb\u52a0\u65b0\u4ea7\u54c1\u65f6, \u7f16\u5199\u65b0\u7684\u5177\u4f53\u7c7b\u548c\u5177\u4f53\u5de5\u5382\u7c7b, \u589e\u52a0\u4e86\u7cfb\u7edf\u590d\u6742\u5ea6<\/li>\n<li>\u5f15\u5165\u7684\u62bd\u8c61\u5c42\u589e\u52a0\u4e86\u7406\u89e3\u96be\u5ea6, \u53ef\u80fd\u8fd8\u9700\u7528\u5230DOM, \u53cd\u5c04\u7b49\u6280\u672f, \u589e\u52a0\u4e86\u5b9e\u73b0\u96be\u5ea6<\/li>\n<\/ul>\n<p><strong>\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u4e00\u4e2a\u7c7b\u4e0d\u77e5\u9053\u4ed6\u6240\u9700\u8981\u7684\u5bf9\u8c61\u7c7b(\u540d)<\/li>\n<li>\u4e00\u4e2a\u7c7b\u901a\u8fc7\u5b50\u7c7b\u6307\u5b9a\u521b\u5efa\u54ea\u4e2a\u5bf9\u8c61<\/li>\n<li>\u5c06\u521b\u5efa\u5bf9\u8c61\u7684\u4efb\u52a1\u59d4\u6258\u7ed9\u591a\u4e2a\u5de5\u5382\u5b50\u7c7b\u4e2d\u7684\u67d0\u4e00\u4e2a<\/li>\n<\/ul>\n<p><strong>\u5de5\u5382\u65b9\u6cd5\u7684\u672c\u8d28: \u5ef6\u8fdf\u5230\u5b50\u7c7b\u6765\u9009\u62e9\u5b9e\u73b0.<\/strong><\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>DOM\u548c\u53cd\u5c04<\/strong><\/p>\n<p>DOM\u662f\u4e00\u4e2a\u4e0e\u5e73\u53f0\u548c\u8bed\u8a00\u65e0\u5173\u7684\u63a5\u53e3,\u5141\u8bb8\u7a0b\u5e8f\u52a8\u6001\u8bbf\u95ee\u548c\u66f4\u65b0\u6587\u6863\u7684\u5185\u5bb9\u3001\u7ed3\u6784\u548c\u6837\u5f0f<\/p>\n<pre><code class=\"language-java\">\/\/ \u4eceXML\u914d\u7f6e\u4e2d\u8bfb\u53d6\u7c7b\u540d\nString className = doc.getElementsByTagName(&quot;class&quot;).item(0).getTextContent();<\/code><\/pre>\n<p>\u53cd\u5c04\u662fJava\u7684\u7279\u6027, \u5141\u8bb8\u5728\u8fd0\u884c\u65f6\u68c0\u67e5\u548c\u64cd\u4f5c\u7c7b\u3001\u63a5\u53e3\u3001\u65b9\u6cd5\u548c\u5b57\u6bb5<\/p>\n<pre><code class=\"language-java\">String className = &quot;Dog&quot;;\n\/\/ clazz\u662f\u6839\u636e\u5b57\u7b26\u4e32\u751f\u6210\u7684\u4e00\u4e2a\u7c7b\u7684\u8bbe\u8ba1\u56fe\n\/\/ \u672c\u8d28\u4e0a\u662fJVM\u4e2d, Dog\u7c7b\u7684\u8fd0\u884c\u65f6\u8868\u793a\nClass&lt;?&gt; clazz = Class.forName(className); \n\/\/ \u76f8\u5f53\u4e8enew Dog();\nreturn clazz.newInstance();<\/code><\/pre>\n<p><strong>\u4f7f\u7528\u591a\u4e2a\u5de5\u5382\u65b9\u6cd5<\/strong><\/p>\n<p>\u5728\u62bd\u8c61\u5de5\u5382\u89d2\u8272\u4e2d\u53ef\u4ee5\u5b9a\u4e49\u591a\u4e2a\u5de5\u5382\u65b9\u6cd5, \u4ece\u800c\u4f7f\u5177\u4f53\u5de5\u5382\u5b9e\u73b0. \u8fd9\u4e9b\u5de5\u5382\u65b9\u6cd5\u5305\u542b\u4e0d\u540c\u4e1a\u52a1\u903b\u8f91\u4ee5\u6ee1\u8db3\u4e0d\u540c\u9700\u6c42<\/p>\n<p><strong>\u4ea7\u54c1\u5bf9\u8c61\u7684\u91cd\u590d\u4f7f\u7528<\/strong><\/p>\n<p>\u5de5\u5382\u5bf9\u8c61\u53ef\u4ee5\u5c06\u521b\u5efa\u8fc7\u7684\u4ea7\u54c1\u4fdd\u5b58\u8d77\u6765, \u5728\u5ba2\u6237\u8bf7\u6c42\u6765\u5230\u65f6, \u5728\u96c6\u5408\u4e2d\u5148\u641c\u7d22, \u5982\u679c\u6709\u6ee1\u8db3\u8981\u6c42\u7684, \u5c31\u76f4\u63a5\u8fd4\u56de.<\/p>\n<p><strong>\u591a\u6001\u6027\u4e27\u5931\u548c\u6a21\u5f0f\u9000\u5316<\/strong><\/p>\n<p>\u5982\u679c\u5de5\u5382\u7b49\u7ea7\u7ed3\u6784\u53ea\u6709\u4e00\u4e2a\u5177\u4f53\u5de5\u5382\u7c7b, \u5219\u53ef\u4ee5\u7701\u7565\u62bd\u8c61\u5de5\u5382. <\/p>\n<p>\u5f53\u552f\u4e00\u7684\u5177\u4f53\u5de5\u5382\u53ef\u4ee5\u521b\u5efa\u6240\u6709\u5bf9\u8c61, \u4e14\u5de5\u5382\u65b9\u6cd5\u662f\u9759\u6001\u65f6, \u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u9000\u5316\u4e3a\u7b80\u5355\u5de5\u5382\u6a21\u5f0f.<\/p>\n<hr \/>\n<h2>\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f<\/h2>\n<p><strong>Abstract Factory Pattern, Kit\u6a21\u5f0f<\/strong><\/p>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u5728\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u4e2d, \u6bcf\u4e2a\u5177\u4f53\u5de5\u5382\u5bf9\u5e94\u4e00\u79cd\u5177\u4f53\u7684\u4ea7\u54c1. \u4f46\u662f\u6709\u65f6\u5019\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u5de5\u5382\u53ef\u4ee5\u63d0\u4f9b\u591a\u4e2a\u4ea7\u54c1\u5bf9\u8c61, \u800c\u4e0d\u662f\u5355\u4e00\u7684.<\/p>\n<p>\u62bd\u8c61\u5de5\u5382\u63d0\u4f9b\u4e00\u4e2a\u521b\u5efa\u4e00\u7cfb\u5217\u76f8\u5173\u5bf9\u8c61\u7684\u63a5\u53e3, \u800c\u65e0\u9700\u6307\u5b9a\u5177\u4f53\u7684\u7c7b.<\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784\u4e0e<\/h3>\n<p>\u8fd9\u91cc\u5f15\u5165\u4e24\u4e2a\u6982\u5ff5:<\/p>\n<ul>\n<li>\n<p>\u4ea7\u54c1\u7b49\u7ea7\u7ed3\u6784: \u5373\u4ea7\u54c1\u7684\u7ee7\u627f\u7ed3\u6784. \u6bd4\u5982: \u7236\u7c7b\u7535\u89c6\u673a, \u7ee7\u627f\u51fa\u6d77\u5c14\u7535\u89c6\u673a, TCL\u7535\u89c6\u673a, \u6d77\u4fe1\u7535\u89c6\u673a\u7b49\u7b49<\/p>\n<\/li>\n<li>\n<p>\u4ea7\u54c1\u65cf: \u5728\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\u4e2d, \u4ea7\u54c1\u65cf\u662f\u6307\u540c\u4e00\u4e2a\u5de5\u5382\u751f\u4ea7\u7684, \u4f4d\u4e8e\u4e0d\u540c\u4ea7\u54c1\u7b49\u7ea7\u7ed3\u6784\u7684\u4e00\u7ec4\u4ea7\u54c1. \u6bd4\u5982\u6d77\u5c14\u7535\u5668\u5de5\u5382\u751f\u4ea7\u7684\u6d77\u5c14\u7535\u51b0\u7bb1, \u6d77\u5c14\u7535\u89c6\u673a\u7b49\u7b49<\/p>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241103223406159.png\" alt=\"image-20241103223406159\" style=\"zoom:33%;\" \/><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241103223848101.png\" alt=\"image-20241103223848101\" style=\"zoom:33%;\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/5191c5e6f923bf528918d38c9e81c96d.png\" alt=\"5191c5e6f923bf528918d38c9e81c96d.png\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241103225045552.png\" alt=\"image-20241103225045552\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li>\n<p><strong>AbstractFactory<\/strong>: \u62bd\u8c61\u5de5\u5382, \u5728\u4e00\u4e2a\u62bd\u8c61\u5de5\u5382\u4e2d\u53ef\u4ee5\u5b9a\u4e49\u4e00\u7ec4\u65b9\u6cd5, \u6bcf\u4e00\u4e2a\u65b9\u6cd5\u5bf9\u5e94\u4e00\u4e2a\u4ea7\u54c1\u9876\u7ea7\u7ed3\u6784<\/p>\n<\/li>\n<li>\n<p><strong>ConcreteFactory<\/strong>: \u5177\u4f53\u5de5\u5382, \u5b9e\u73b0\u4e86\u62bd\u8c61\u5de5\u5382\u58f0\u660e\u7684\u65b9\u6cd5, \u751f\u6210\u4e00\u7ec4\u5177\u4f53\u4ea7\u54c1, \u8fd9\u4e9b\u4ea7\u54c1\u6784\u6210\u4e00\u4e2a\u4ea7\u54c1\u65cf<\/p>\n<\/li>\n<li>\n<p><strong>AbstractProduct<\/strong>: \u62bd\u8c61\u4ea7\u54c1\u4e3a<strong>\u6bcf\u79cd\u4ea7\u54c1<\/strong>\u58f0\u660e\u63a5\u53e3, \u5b9a\u4e49\u5171\u540c\u4e1a\u52a1\u65b9\u6cd5<\/p>\n<\/li>\n<li>\n<p><strong>Product<\/strong>: \u5177\u4f53\u4ea7\u54c1, \u5b9e\u73b0\u4e1a\u52a1\u65b9\u6cd5<\/p>\n<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p><strong>\u6a21\u5f0f\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\u9694\u79bb\u4e86\u5177\u4f53\u7c7b\u7684\u751f\u6210, \u8fdb\u4e00\u6b65\u964d\u4f4e\u4e86\u8026\u5408\u5ea6<\/li>\n<li>\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f<strong>\u5728\u4ea7\u54c1\u65cf\u4e00\u4fa7\u662f\u7b26\u5408\u5f00\u95ed\u539f\u5219\u7684<\/strong>: \u6bcf\u589e\u52a0\u4e00\u4e2a\u4ea7\u54c1\u65cf, \u53ea\u9700\u8981\u5b9e\u73b0\u62bd\u8c61\u5de5\u5382\u7c7b\u5373\u53ef. <\/li>\n<\/ul>\n<p><strong>\u6a21\u5f0f\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u5728\u4ea7\u54c1\u7b49\u7ea7\u7ed3\u6784\u4e00\u4fa7, \u5373, \u6dfb\u52a0\u65b0\u7684\u4ea7\u54c1\u5bf9\u8c61\u65f6, \u96be\u4ee5\u62bd\u8c61\u5de5\u5382, \u9700\u8981\u6539\u52a8\u6240\u6709\u7c7b, <strong>\u8fd9\u4e00\u70b9\u4e0d\u7b26\u5408\u8be5\u95ed\u539f\u5219, \u88ab\u79f0\u4f5c\u5f00\u95ed\u539f\u5219\u7684\u503e\u659c\u6027<\/strong><\/li>\n<\/ul>\n<p><strong>\u6a21\u5f0f\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u4e00\u4e2a\u7cfb\u7edf\u6709\u591a\u4e2a\u4ea7\u54c1\u65cf, \u4e14\u540c\u65cf\u7684\u4ea7\u54c1\u5c06\u5728\u4e00\u8d77\u4f7f\u7528(\u6bd4\u5982\u7ec4\u88c5\u7535\u8111\u7684\u4f8b\u5b50, \u534e\u7855\u5168\u5bb6\u6876\u7ecf\u5e38\u4e00\u8d77\u7528)<\/li>\n<li>\u4e3e\u4f8b: \u8f6f\u4ef6\u7cfb\u7edf\u66f4\u6362\u754c\u9762\u4e3b\u9898, \u5373\n<ul>\n<li>[\u4e3b\u9898A, \u4e3b\u9898B, \u4e3b\u9898C]\\: \u4ea7\u54c1\u65cf<\/li>\n<li>[\u6309\u94ae1, \u6309\u94ae2, \u6309\u94ae3]\\: \u4ea7\u54c1\u7b49\u7ea7\u7ed3\u6784<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u9000\u5316<\/strong><\/p>\n<p>\u5f53\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\u4e2d\u7684\u6bcf\u4e00\u4e2a\u5177\u4f53\u5de5\u5382\u90fd\u53ea\u521b\u5efa\u4e00\u4e2a\u4ea7\u54c1\u5bf9\u8c61\u65f6, \u5373, \u4ea7\u54c1\u7b49\u7ea7\u7ed3\u6784\u4e3a\u4e00\u65f6, \u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\u9000\u5316\u4e3a\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f;<\/p>\n<p>\u5f53\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u4e2d\u7684\u62bd\u8c61\u5de5\u5382\u4e0e\u5177\u4f53\u5de5\u5382\u5408\u5e76, \u5373, \u7528\u4e00\u7edf\u4e00\u7684\u5de5\u5382\u521b\u5efa\u4ea7\u54c1\u5bf9\u8c61, \u4e14\u521b\u5efa\u65b9\u6cd5\u4e3a\u9759\u6001\u65f6, \u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u9000\u5316\u4e3a\u7b80\u5355\u5de5\u5382\u6a21\u5f0f<\/p>\n<p><strong>\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\u7684\u672c\u8d28\u662f\u9009\u62e9\u4ea7\u54c1\u7c07\u7684\u5b9e\u73b0<\/strong><\/p>\n<ul>\n<li>\u5728\u5de5\u5382\u65b9\u6cd5\u6a21\u5f0f\u4e2d, \u867d\u7136\u4e00\u4e2a\u7c7b\u53ef\u4ee5\u6709\u591a\u4e2a\u5de5\u5382\u65b9\u6cd5, \u4f46\u662f\u8fd9\u4e9b\u65b9\u6cd5\u4e00\u822c\u6ca1\u6709\u8054\u7cfb(\u5373\u4f7f\u770b\u8d77\u6765\u6709\u8054\u7cfb);<\/li>\n<li>\u5728\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\u4e2d, \u7740\u91cd\u4ea7\u54c1\u7c07\u7684\u9009\u62e9\u5b9e\u73b0. \u6bcf\u4e00\u4e2a\u4ea7\u54c1\u7c07\u5185\u7684\u4ea7\u54c1\u7ecf\u5e38\u4e00\u8d77\u51fa\u73b0;<\/li>\n<\/ul>\n<hr \/>\n<h2>\u5efa\u9020\u8005\u6a21\u5f0f<\/h2>\n<h3>\u5b9a\u4e49\u548c\u52a8\u673a<\/h3>\n<p>\u5728\u73b0\u5b9e\u548c\u8f6f\u4ef6\u7cfb\u7edf\u4e2d, \u5b58\u5728\u4e00\u4e9b\u590d\u6742\u7684\u5bf9\u8c61, \u5305\u542b\u591a\u4e2a\u7ec4\u6210\u90e8\u5206. \u6bd4\u5982\u6c7d\u8f66, \u5305\u542b\u8f66\u8f6e, \u65b9\u5411\u76d8, \u53d1\u52a8\u673a\u7b49\u5404\u79cd\u90e8\u4ef6. \u5bf9\u4e8e\u5927\u90e8\u5206\u7528\u6237, \u65e0\u987b\u77e5\u9053\u88c5\u914d\u7ec6\u8282, \u4e5f\u4e0d\u4f1a\u5355\u72ec\u4f7f\u7528\u67d0\u4e2a\u90e8\u4ef6.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241105155725541.png\" alt=\"image-20241105155725541\" style=\"zoom:33%;\" \/><\/p>\n<p>\u5728\u8f6f\u4ef6\u5f00\u53d1\u4e2d, \u6709\u5f88\u591a\u7c7b\u4f3c\u7684\u590d\u6742\u5bf9\u8c61. \u4ed6\u4eec\u62e5\u6709\u4e00\u7cfb\u5217\u6210\u5458\u5c5e\u6027, \u6709\u4e9b\u662f\u5f15\u7528\u7c7b\u578b. \u8fd9\u4e9b\u5c5e\u6027\u53ef\u80fd\u6709\u76f8\u4e92\u7684\u5236\u7ea6\u6761\u4ef6, \u6bd4\u5982\u5b8c\u6210\u6027\u7ea6\u675f.<\/p>\n<p>\u5efa\u9020\u8005\u8fd4\u56de\u5ba2\u6237\u7aef\u7684\u662f\u4e00\u4e2a\u5df2\u7ecf\u5efa\u9020\u5b8c\u6bd5\u7684\u5b8c\u6210\u4ea7\u54c1, \u800c\u7528\u6237\u65e0\u987b\u5173\u5fc3\u5bf9\u8c61\u6240\u5305\u542b\u7684\u5c5e\u6027\u548c\u7ec4\u88c5\u65b9\u5f0f, \u8fd9\u5c31\u662f\u5efa\u9020\u8005\u6a21\u5f0f\u7684\u52a8\u673a.<\/p>\n<p><strong>\u5efa\u9020\u8005\u6a21\u5f0f\u53ef\u4ee5\u5c06\u90e8\u4ef6\u548c\u7ec4\u88c5\u8fc7\u7a0b\u5206\u5f00, \u4f7f\u5f97\u540c\u6837\u7684\u6784\u5efa\u8fc7\u7a0b\u53ef\u4ee5\u6709\u4e0d\u540c\u7684\u8868\u793a.<\/strong><\/p>\n<p><strong>\u5efa\u9020\u8005\u6a21\u5f0f\u4e00\u6b65\u6b65\u521b\u5efa\u4e00\u4e2a\u590d\u6742\u5bf9\u8c61.<\/strong><\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241105162943839.png\" alt=\"image-20241105162943839\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Builde<\/strong>r: \u62bd\u8c61\u5efa\u9020\u8005, \u4e3a\u521b\u5efa\u4e00\u4e2a\u4ea7\u54c1\u5bf9\u8c61\u7684\u5404\u90e8\u4ef6\u6307\u5b9a\u62bd\u8c61\u63a5\u53e3<\/li>\n<li><strong>ContreteBuilder<\/strong>: \u5177\u4f53\u5efa\u9020\u8005, \u5b9e\u73b0\u4e0a\u9762\u7684\u63a5\u53e3, \u5305\u62ec\u5404\u4e2a\u90e8\u4ef6\u7684\u6784\u9020\u548c\u88c5\u914d\u65b9\u6cd5, \u5b9a\u4e49\u5e76\u660e\u786e\u590d\u6742\u5bf9\u8c61, \u4e5f\u53ef\u4ee5\u63d0\u4f9b\u4e00\u4e2a\u65b9\u6cd5\u8fd4\u56de\u521b\u5efa\u597d\u7684\u590d\u6742\u4ea7\u54c1\u5bf9\u8c61<\/li>\n<li><strong>Director<\/strong>: \u6307\u6325\u8005\u8d1f\u8d23\u5b89\u6392\u590d\u6742\u5bf9\u8c61\u7684\u5efa\u9020\u6b21\u5e8f. \u4e5f\u4e3a\u4e86\u9694\u79bb\u5ba2\u6237\u4e0e\u751f\u4ea7\u8fc7\u7a0b. <\/li>\n<li><strong>Product<\/strong>: \u88ab\u6784\u5efa\u7684\u590d\u6742\u5bf9\u8c61<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p><strong>\u6a21\u5f0f\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u5ba2\u6237\u4e0d\u5fc5\u6e05\u695a\u4ea7\u54c1\u7684\u5185\u90e8\u7ec4\u6210\u7ec6\u8282, \u964d\u4f4e\u4e86\u8026\u5408\u5ea6<\/li>\n<li>\u5ba2\u6237\u53ef\u4ee5<strong>\u4f7f\u7528\u76f8\u540c\u7684\u521b\u5efa\u8fc7\u7a0b\u53ef\u4ee5\u521b\u5efa\u4e0d\u540c\u7684\u4ea7\u54c1\u5bf9\u8c61<\/strong><\/li>\n<li>\u5177\u4f53\u5efa\u9020\u8005\u4e4b\u95f4\u76f8\u5bf9\u72ec\u7acb<\/li>\n<li>\u53ef\u4ee5<strong>\u7cbe\u7ec6\u7684\u63a7\u5236\u4ea7\u54c1\u7684\u521b\u5efa\u8fc7\u7a0b<\/strong><\/li>\n<li>\u589e\u52a0\u65b0\u7684\u5177\u4f53\u5efa\u9020\u8005\u65e0\u9700\u4fee\u6539\u5df2\u6709\u4ee3\u7801, <strong>\u7b26\u5408\u5f00\u95ed\u539f\u5219<\/strong><\/li>\n<\/ul>\n<p><strong>\u6a21\u5f0f\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u5efa\u9020\u8005\u6a21\u5f0f\u9002\u5408\u5efa\u9020\u6709\u76f8\u540c\u70b9\u7684\u4ea7\u54c1, <strong>\u5982\u679c\u5dee\u5f02\u8fc7\u5927\u5219\u4e0d\u5408\u9002<\/strong><\/li>\n<li>\u5982\u679c\u4ea7\u54c1\u5185\u90e8\u53d8\u5316\u590d\u6742, \u53ef\u80fd\u9700\u8981\u5b9a\u4e49\u5f88\u591a\u5177\u4f53\u5efa\u9020\u8005<\/li>\n<\/ul>\n<p><strong>\u9002\u7528\u60c5\u51b5<\/strong><\/p>\n<ul>\n<li>\u4ea7\u54c1\u5bf9\u8c61\u6709\u590d\u6742\u7684\u5185\u90e8\u7ed3\u6784<\/li>\n<li>\u4ea7\u54c1\u5bf9\u8c61\u6709<strong>\u5c5e\u6027\u7684\u76f8\u4e92\u4f9d\u8d56<\/strong>, \u5e76\u4e14\u9700\u8981\u6307\u5b9a\u751f\u6210\u987a\u5e8f<\/li>\n<li>\u5bf9\u8c61\u7684\u521b\u5efa\u8fc7\u7a0b\u72ec\u7acb\u4e8e\u521b\u5efa\u8be5\u5bf9\u8c61\u7684\u7c7b, \u521b\u5efa\u8fc7\u7a0b\u5c01\u88c5\u5c01\u88c5\u5728\u6307\u6325\u8005, \u800c\u4e0d\u662f\u5efa\u9020\u8005.<\/li>\n<li>\u9694\u79bb\u590d\u6742\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u4f7f\u7528<\/li>\n<li>\u9700\u8981\u76f8\u540c\u7684\u521b\u5efa\u8fc7\u7a0b\u53ef\u4ee5\u521b\u5efa\u4e0d\u540c\u7684\u5bf9\u8c61<\/li>\n<\/ul>\n<p><strong>\u5efa\u9020\u8005\u6a21\u5f0f vs \u62bd\u8c61\u5de5\u5382\u6a21\u5f0f<\/strong><\/p>\n<ul>\n<li>\u5efa\u9020\u8005\u6a21\u5f0f\u8fd4\u56de\u4e00\u4e2a\u7ec4\u88c5\u597d\u7684\u4ea7\u54c1, \u800c\u62bd\u8c61\u5de5\u5382\u6ce8\u91cd\u8fd4\u56de\u4e00\u7cfb\u5217\u7684\u4ea7\u54c1\u65cf, \u4ea7\u54c1\u7b49\u7ea7\u7ed3\u6784<\/li>\n<li>\u5efa\u9020\u8005\u6a21\u5f0f\u4e2d, \u5ba2\u6237\u7aef\u53ef\u4ee5\u4e0d\u76f4\u63a5\u8c03\u7528\u5efa\u9020\u8005\u7684\u65b9\u6cd5, \u800c\u662f\u901a\u8fc7\u6307\u6325\u8005, \u6ce8\u91cd\u4e00\u6b65\u4e00\u6b65\u7684\u7ec4\u88c5. \u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\u4e2d, \u5ba2\u670d\u5b9e\u529b\u5316\u5de5\u5382\u7c7b, \u7136\u540e\u76f4\u63a5\u83b7\u53d6.<\/li>\n<li>\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f: \u6c7d\u8f66\u914d\u4ef6\u751f\u4ea7\u5de5\u5382, \u751f\u4ea7\u4e00\u4e2a\u4ea7\u54c1\u65cf<\/li>\n<li>\u5efa\u9020\u8005\u6a21\u5f0f: \u6c7d\u8f66\u7ec4\u88c5\u5de5\u5382, \u6ce8\u91cd\u7ec4\u88c5, \u8fd4\u56de\u4e00\u4e2a\u5b8c\u6574\u6c7d\u8f66<\/li>\n<\/ul>\n<p><strong>\u5efa\u9020\u8005\u6a21\u5f0f\u7684\u672c\u8d28\u662f\u5206\u79bb\u6574\u4f53\u6784\u5efa\u7b97\u6cd5\u548c\u90e8\u4ef6\u6784\u9020<\/strong><\/p>\n<p>\u6784\u9020\u590d\u6742\u5bf9\u8c61\u6709\u6784\u5efa\u8fc7\u7a0b, \u6784\u9020\u8fc7\u7a0b\u4e2d\u53c8\u6709\u5177\u4f53\u7684\u5b9e\u73b0. \u5efa\u9020\u8005\u6a21\u5f0f\u7528\u6765\u5206\u79bb\u8fd9\u4e24\u90e8\u5206. \u8fd9\u964d\u4f4e\u4e86\u8026\u5408\u5ea6, \u8ba9\u7a0b\u5e8f\u7ed3\u6784\u677e\u6563, \u6269\u5c55\u5bb9\u6613, \u590d\u7528\u6027\u597d.<\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u5efa\u9020\u8005\u6a21\u5f0f\u7684\u7b80\u5316<\/strong><\/p>\n<ul>\n<li>\u7701\u7565\u62bd\u8c61\u5efa\u9020\u8005\u89d2\u8272: \u5982\u679c\u7cfb\u7edf\u4e2d\u53ea\u9700\u8981\u4e00\u4e2a\u5177\u4f53\u5efa\u9020\u8005<\/li>\n<li>\u7701\u7565\u6307\u6325\u8005: \u5982\u679c\u53ea\u6709\u4e00\u4e2a\u5177\u4f53\u5efa\u9020\u8005, \u4e14\u62bd\u8c61\u5efa\u9020\u8005\u4e5f\u88ab\u7701\u7565\u6389<\/li>\n<li>\u5408\u5e76\u6307\u6325\u8005\u548c\u62bd\u8c61\u5efa\u9020\u8005: \u7b80\u5316\u7ed3\u6784, <strong>\u4e0d\u7b26\u5408\u5355\u4e00\u804c\u8d23\u539f\u5219<\/strong><\/li>\n<\/ul>\n<hr \/>\n<h2>\u539f\u578b\u6a21\u5f0f<\/h2>\n<h3>\u52a8\u673a\u548c\u5b9a\u4e49<\/h3>\n<p><strong>\u539f\u578b\u6a21\u5f0f\u901a\u8fc7\u7ed9\u51fa\u4e00\u4e2a\u539f\u578b\u6765\u6307\u660e\u8981\u521b\u5efa\u7684\u5bf9\u8c61\u7684\u7c7b\u578b, \u7136\u540e\u590d\u5236\u8fd9\u4e2a\u539f\u578b\u6765\u521b\u5efa\u66f4\u591a\u540c\u7c7b\u578b\u7684\u5bf9\u8c61.<\/strong> \u8fd9\u6837\u64cd\u4f5c\u66f4\u65b9\u4fbf, \u66f4\u8282\u7701\u8d44\u6e90.<\/p>\n<p>\u5bf9\u6bd4\u62f7\u8d1d\u6784\u9020<\/p>\n<ul>\n<li>\u539f\u578b\u5bf9\u8c61\u5728\u521b\u5efa\u65f6, \u4e0d\u7528\u5173\u5fc3\u8fd9\u4e2a\u5bf9\u8c61\u672c\u8eab\u7684\u7c7b\u578b<\/li>\n<li>\u539f\u578b\u6a21\u5f0f\u6709\u52a9\u4e8e\u7b26\u5408\u91cc\u6c0f\u66ff\u6362\u539f\u5219, \u6bd4\u5982\u6c34\u679c\u7bee\u91cc\u653e\u5165\u6c34\u679c\u526f\u672c<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241105181945292.png\" alt=\"image-20241105181945292\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Prototype<\/strong>: \u62bd\u8c61\u539f\u578b\u7c7b, \u5b9a\u4e49\u514b\u9686\u81ea\u5df1\u7684\u65b9\u6cd5\u7684\u63a5\u53e3<\/li>\n<li><strong>ConcretePrototype<\/strong>: \u5177\u4f53\u539f\u578b\u7c7b, \u5b9e\u73b0\u5177\u4f53\u7684\u514b\u9686\u65b9\u6cd5, \u8fd4\u56de\u4e00\u4e2a\u81ea\u5df1\u7684\u514b\u9686\u5bf9\u8c61<\/li>\n<li><strong>Client<\/strong>: \u5ba2\u6237\u7c7b, \u53ea\u9700\u8981\u76f4\u63a5\u8c03\u7528\u514b\u9686\u65b9\u6cd5\u6765\u590d\u5236<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u4e00\u4e2a\u7c7b\u5305\u542b\u4e00\u4e9b\u6210\u5458\u5bf9\u8c61, \u5728\u4f7f\u7528\u539f\u578b\u6a21\u5f0f\u514b\u9686\u5bf9\u8c61\u65f6, \u6839\u636e\u6210\u5458\u5bf9\u8c61\u662f\u5426\u514b\u9686, \u53ef\u4ee5\u5206\u4e3a\u6df1\u6d45\u514b\u9686<\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u7b80\u5316\u5bf9\u8c61\u521b\u5efa\u8fc7\u7a0b\u548c\u6548\u7387<\/li>\n<li>\u6269\u5c55\u6027\u8f83\u597d, \u5ba2\u6237\u7aef\u9488\u5bf9\u62bd\u8c61\u539f\u578b\u7c7b\u7f16\u7a0b, \u589e\u52a0\u51cf\u5c11\u4ea7\u54c1\u7c7b\u5bf9\u539f\u7cfb\u7edf\u6ca1\u6709\u5f71\u54cd<\/li>\n<li>\u4f18\u5316\u4e86\u521b\u5efa\u7ed3\u6784, \u7701\u7565\u5de5\u5382\u7c7b<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u6bcf\u4e00\u4e2a\u7c7b\u90fd\u9700\u914d\u5907\u4e00\u4e2a\u514b\u9686\u65b9\u6cd5<\/li>\n<li>\u591a\u5c42\u6df1\u514b\u9686\u6bd4\u8f83\u590d\u6742<\/li>\n<\/ul>\n<p><strong>\u6a21\u5f0f\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u521b\u5efa\u65b0\u5bf9\u8c61\u7684\u6210\u672c\u8f83\u5927<\/li>\n<li>\u7cfb\u7edf\u8981\u4fdd\u5b58\u5bf9\u8c61\u7684\u72b6\u6001<\/li>\n<li>\u89c4\u907f\u5de5\u5382\u7c7b\u5c42\u6b21<\/li>\n<\/ul>\n<p><strong>\u539f\u578b\u6a21\u5f0f\u7684\u672c\u8d28\u662f\u514b\u9686\u751f\u6210\u5bf9\u8c61<\/strong><\/p>\n<p>\u514b\u9686\u662f\u624b\u6bb5, \u751f\u6210\u65b0\u5bf9\u8c61\u662f\u76ee\u7684. <\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u5e26\u539f\u578b\u7ba1\u7406\u5668\u7684\u539f\u578b\u6a21\u5f0f<\/strong><\/p>\n<p>\u539f\u578b\u7ba1\u7406\u5668\u662f\u5c06\u591a\u4e2a\u539f\u578b\u5bf9\u8c61\u5b58\u50a8\u5728\u4e00\u4e2a\u96c6\u5408\u4e2d\u4f9b\u5ba2\u6237\u4f7f\u7528, <strong>\u4ed6\u662f\u4e00\u4e2a\u4e13\u95e8\u8d1f\u8d23\u514b\u9686\u5bf9\u8c61\u7684\u5de5\u5382<\/strong>. \u5982\u679c\u9700\u8981\u67d0\u4e2a\u5bf9\u8c61\u7684\u514b\u9686, \u4ed6\u6765\u901a\u8fc7\u590d\u5236\u96c6\u5408\u4e2d\u7684\u539f\u578b\u5bf9\u8c61\u6765\u83b7\u5f97.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241113234949151.png\" alt=\"image-20241113234949151\" style=\"zoom:33%;\" \/><\/p>\n<p><strong>\u76f8\u4f3c\u5bf9\u8c61\u7684\u590d\u5236<\/strong><\/p>\n<p>\u5f88\u591a\u65f6\u5019, \u5e0c\u671b\u5f97\u5230\u7684\u5bf9\u8c61\u4e0e\u539f\u578b\u5e76\u4e0d\u662f\u5b8c\u5168\u76f8\u540c\u7684. <strong>\u53ef\u4ee5\u901a\u8fc7\u539f\u578b\u6a21\u5f0f\u5148\u590d\u5236, \u518d\u4fee\u6539.<\/strong> <\/p>\n<hr \/>\n<h2>\u5355\u4f8b\u6a21\u5f0f<\/h2>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u5bf9\u4e8e\u7cfb\u7edf\u4e2d\u7684\u67d0\u4e9b\u7c7b\u6765\u8bf4, \u53ea\u6709\u4e00\u4e2a\u5b9e\u4f8b\u5f88\u91cd\u8981. \u4f8b\u5982\u4e00\u4e2a\u7cfb\u7edf\u4e2d\u53ea\u6709\u4e00\u4e2a\u6587\u4ef6\u7cfb\u7edf, \u4e00\u4e2a\u4efb\u52a1\u7ba1\u7406\u5668.<\/p>\n<p>\u6211\u4eec\u9700\u8981\u8bbe\u8ba1\u4e00\u79cd\u7c7b, \u8ba9\u7c7b\u81ea\u8eab\u8d1f\u8d23\u4fdd\u5b58\u4ed6\u7684\u552f\u4e00\u5b9e\u4f8b, \u4fdd\u8bc1\u6ca1\u6709\u5176\u4ed6\u5b9e\u4f8b\u521b\u5efa, \u5e76\u63d0\u4f9b\u8bbf\u95ee\u65b9\u6cd5.<\/p>\n<p>\u5355\u4f8b\u6a21\u5f0f\u7684\u8981\u70b9<\/p>\n<ul>\n<li>\u53ea\u6709\u4e00\u4e2a\u5b9e\u4f8b<\/li>\n<li>\u81ea\u884c\u521b\u5efa\u8fd9\u4e2a\u5b9e\u4f8b<\/li>\n<li>\u81ea\u884c\u5411\u7cfb\u7edf\u63d0\u4f9b\u8fd9\u4e2a\u5b9e\u4f8b<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241105220338984.png\" alt=\"image-20241105220338984\" style=\"zoom:33%;\" \/><\/p>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<ul>\n<li>\u5355\u4f8b\u7c7b\u7684\u6784\u9020\u51fd\u6570\u662f\u79c1\u6709\u7684, \u65e0\u6cd5\u88abnew\u5b9e\u4f8b\u5316<\/li>\n<li>\u5355\u4f8b\u7c7b\u6709\u4e00\u4e2a\u9759\u6001\u7684\u6210\u5458\u53d8\u91cf\u548c\u4e00\u4e2a\u9759\u6001\u7684, \u516c\u6709\u7684\u5de5\u5382\u65b9\u6cd5. \u8fd9\u4e2a\u5de5\u5382\u65b9\u6cd5\u8d1f\u8d23\u68c0\u9a8c\u5b9e\u4f8b\u5b58\u5728\u6027, \u5e76\u5b9e\u4f8b\u5316\u81ea\u5df1\u51fa\u5b58\u5728\u9759\u6001\u6210\u5458\u53d8\u91cf\u4e2d<\/li>\n<\/ul>\n<p><strong>\u6a21\u5f0f\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u63d0\u4f9b\u5bf9\u552f\u4e00\u5b9e\u4f8b\u7684\u53d7\u63a7\u8bbf\u95ee<\/li>\n<li>\u8282\u7ea6\u7cfb\u7edf\u8d44\u6e90<\/li>\n<li>\u5141\u8bb8\u53ef\u53d8\u6570\u76ee\u7684\u5b9e\u4f8b<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u5355\u4f8b\u6a21\u5f0f\u4e2d\u6ca1\u6709\u62bd\u8c61, \u8fd9\u4f7f\u5f97<strong>\u6269\u5c55\u56f0\u96be<\/strong><\/li>\n<li>\u5355\u4f8b\u7c7b\u7684\u804c\u8d23\u8fc7\u91cd, <strong>\u8fdd\u80cc\u5355\u4e00\u804c\u8d23\u539f\u5219<\/strong><\/li>\n<li>\u6ee5\u7528\u4f1a\u5e26\u6765\u8d1f\u9762\u95ee\u9898<\/li>\n<\/ul>\n<p><strong>\u5355\u4f8b\u6a21\u5f0f\u7684\u672c\u8d28: \u63a7\u5236\u5b9e\u4f8b\u6570\u91cf<\/strong><\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u997f\u6c49\u5f0f\u5355\u4f8b<\/strong>: \u7acb\u5373\u5b9e\u4f8b\u5316<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241105221338986.png\" alt=\"image-20241105221338986\" style=\"zoom:33%;\" \/><\/p>\n<p><strong>\u61d2\u6c49\u5f0f\u5355\u4f8b<\/strong>: \u8bbf\u95ee\u65f6\u5b9e\u4f8b\u5316<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241105221227541.png\" alt=\"image-20241105221227541\" style=\"zoom:33%;\" \/><\/p>\n<hr \/>\n<h1>\u7ed3\u6784\u578b\u6a21\u5f0f<\/h1>\n<p><strong>Structural Pattern<\/strong><\/p>\n<ul>\n<li>\u7c7b\u7ed3\u6784\u6a21\u5f0f: \u5173\u5fc3\u591a\u4e2a\u7c7b\u7684\u7ec4\u5408\u5173\u7cfb, \u4e00\u822c\u53ea\u5b58\u5728\u7ee7\u627f\u548c\u5b9e\u73b0<\/li>\n<li>\u5bf9\u8c61\u7ed3\u6784\u6a21\u5f0f: \u5173\u5fc3\u7c7b\u4e0e\u5bf9\u8c61\u7684\u7ec4\u5408<\/li>\n<\/ul>\n<h2>\u9002\u914d\u5668\u6a21\u5f0f<\/h2>\n<p><strong>Adapter Pattern, \u5305\u88c5\u5668\u6a21\u5f0f, Wrapper Pattern<\/strong><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241112232655282.png\" alt=\"image-20241112232655282\" style=\"zoom:33%;\" \/><\/p>\n<h3>\u6a21\u5f0f\u52a8\u673a<\/h3>\n<ul>\n<li>\u901a\u5e38\u60c5\u51b5\u4e0b, \u5ba2\u6237\u7aef\u53ef\u4ee5\u901a\u8fc7\u76ee\u6807\u7c7b\u7684\u63a5\u53e3\u8bbf\u95ee\u670d\u52a1. \u6709\u65f6\u5019\u867d\u7136\u63a5\u53e3\u53ef\u4ee5\u6ee1\u8db3\u529f\u80fd, \u4f46\u4e0d\u662f\u5ba2\u6237\u6240\u76f4\u63a5\u671f\u671b\u7684.<\/li>\n<li>\u73b0\u6709\u7684\u63a5\u53e3\u9700\u8981\u8f6c\u5316\u4e3a\u5ba2\u6237\u7c7b\u671f\u671b\u7684\u63a5\u53e3<\/li>\n<\/ul>\n<p>\u5b9a\u4e49\u4e00\u4e2a\u5305\u88c5\u7c7b, \u5305\u88c5\u4e0d\u517c\u5bb9\u63a5\u53e3\u7684\u5bf9\u8c61, \u5bf9\u5916\u63d0\u4f9b\u5ba2\u6237\u7c7b\u9700\u8981\u7684\u63a5\u53e3, \u5bf9\u5185\u5bf9\u63a5\u670d\u52a1\u7c7b\u7684\u63a5\u53e3.<\/p>\n<p>\u5ba2\u6237\u7c7b\u4e0d\u76f4\u63a5\u8bbf\u95ee\u9002\u914d\u8005\u7c7b.<\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><strong>\u7c7b\u9002\u914d\u5668<\/strong><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241105223206422.png\" alt=\"image-20241105223206422\" style=\"zoom:33%;\" \/><\/p>\n<p><strong>\u5bf9\u8c61\u9002\u914d\u5668<\/strong><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241105223534875.png\" alt=\"image-20241105223534875\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Target<\/strong>: \u7528\u6237\u6240\u9700\u7684\u63a5\u53e3, <strong>\u53ef\u4ee5\u662f\u62bd\u8c61\u7c7b, \u63a5\u53e3, \u4e5f\u53ef\u4ee5\u662f\u5177\u4f53\u7c7b<\/strong><\/li>\n<li><strong>Adapter<\/strong>: \u9002\u914d\u5668\u7c7b, \u5bf9Adaptee\u548cTarget\u9002\u914d. \u5728\u5bf9\u8c61\u9002\u914d\u5668\u4e2d, \u4ed6\u7ee7\u627fTarget\u5e76\u5173\u8054\u4e00\u4e2aAdaptee\u6765\u4ea7\u751f\u5173\u7cfb. <\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u5c06\u76ee\u6807\u7c7b\u548c\u9002\u914d\u8005\u7c7b\u89e3\u8026<\/li>\n<li>\u589e\u52a0\u4e86\u7c7b\u7684\u900f\u660e\u6027\u548c\u590d\u7528\u6027<\/li>\n<li>\u7075\u6d3b\u6027\u548c\u6269\u5c55\u6027\u975e\u5e38\u597d, <strong>\u7b26\u5408\u5f00\u95ed\u539f\u5219<\/strong><\/li>\n<\/ul>\n<p><strong>\u7c7b\u9002\u914d\u5668\u7684\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u7531\u4e8e\u9002\u914d\u5668\u7c7b\u662f\u9002\u914d\u8005\u7684\u5b50\u7c7b, \u56e0\u6b64\u53ef\u4ee5\u7f6e\u6362\u4e00\u4e9b\u9002\u914d\u8005\u7684\u65b9\u6cd5, \u4f7f\u5f97\u7075\u6d3b\u6027\u66f4\u5f3a<\/li>\n<\/ul>\n<p><strong>\u7c7b\u9002\u914d\u5668\u7684\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>Java, C#\u7b49\u4e0d\u652f\u6301\u591a\u91cd\u7ee7\u627f\u7b49\u8bed\u8a00\u4e00\u6b21\u53ea\u80fd\u9002\u914d\u4e00\u4e2a\u9002\u914d\u8005\u7c7b<\/li>\n<li>\u76ee\u6807\u62bd\u8c61\u7c7b\u53ea\u80fd\u62bd\u8c61, \u4e0d\u80fd\u5177\u4f53, <strong>\u4f7f\u7528\u6709\u4e00\u5b9a\u5c40\u9650\u6027<\/strong><\/li>\n<li><strong>\u4e0d\u80fd\u5c06\u4e00\u4e2a\u9002\u914d\u8005\u7c7b\u548c\u4ed6\u7684\u5b50\u7c7b\u90fd\u9002\u914d\u5230\u76ee\u6807\u63a5\u53e3<\/strong><\/li>\n<\/ul>\n<p><strong>\u5bf9\u8c61\u9002\u914d\u5668\u7684\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li><strong>\u540c\u4e00\u4e2a\u9002\u914d\u5668\u53ef\u4ee5\u628a\u9002\u914d\u8005\u7c7b\u548c\u4ed6\u7684\u5b50\u7c7b\u5168\u90e8\u9002\u914d\u5230\u76ee\u6807\u63a5\u53e3<\/strong><\/li>\n<\/ul>\n<p><strong>\u5bf9\u8c61\u9002\u914d\u5668\u7684\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u60f3\u8981\u7f6e\u6362\u9002\u914d\u8005\u7c7b\u7684\u65b9\u6cd5\u4e0d\u5bb9\u6613<\/li>\n<\/ul>\n<p><strong>\u9002\u914d\u5668\u7684\u672c\u8d28: \u8f6c\u6362\u5339\u914d, \u590d\u7528\u529f\u80fd<\/strong><\/p>\n<p><strong>\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u7cfb\u7edf\u9700\u8981\u73b0\u6709\u7684\u7c7b, \u4f46\u662f\u7c7b\u7684\u63a5\u53e3\u4e0d\u7b26\u5408\u8981\u6c42<\/li>\n<li>\u60f3\u5efa\u7acb\u4e00\u4e2a\u53ef\u91cd\u590d\u4f7f\u7528\u7684\u7c7b(\u9002\u914d\u5668\u7c7b), \u7528\u4e8e\u8054\u7cfb\u5f7c\u6b64\u4e4b\u95f4\u6ca1\u6709\u592a\u5927\u5173\u8054\u7684\u7c7b(\u76ee\u6807\u7c7b\u548c\u9002\u914d\u8005\u7c7b)<\/li>\n<li>\u4e3a\u5c06\u6765\u53ef\u80fd\u5f15\u8fdb\u7684\u7c7b(\u9002\u914d\u8005\u7c7b\u7684\u5b50\u7c7b)\u4e00\u8d77\u5de5\u4f5c<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u9ed8\u8ba4\u9002\u914d\u5668\u6a21\u5f0f(\u7f3a\u7701\u9002\u914d\u5668\u6a21\u5f0f, \u63a5\u53e3\u9002\u914d\u5668\u6a21\u5f0f, \u5355\u63a5\u53e3\u9002\u914d\u5668\u6a21\u5f0f)<\/strong><\/p>\n<p>\u5f53\u4e0d\u9700\u8981\u5168\u90e8\u5b9e\u73b0\u67d0\u4e2a\u63a5\u53e3\u63d0\u4f9b\u7684\u65b9\u6cd5\u65f6, \u53ef\u4ee5\u5148\u8bbe\u8ba1\u4e00\u4e2a\u62bd\u8c61\u7c7b\u5b9e\u73b0\u63a5\u53e3, \u5e76\u4e3a\u6bcf\u4e2a\u65b9\u6cd5\u63d0\u4f9b\u4e00\u4e2a<strong>\u7a7a\u7684\u9ed8\u8ba4\u5b9e\u73b0<\/strong>.<\/p>\n<p>\u6b64\u65f6, \u8be5\u62bd\u8c61\u7c7b\u7684\u5b50\u7c7b\u53ef\u4ee5\u6709\u9009\u62e9\u7684\u8986\u76d6\u7236\u4eb2\u7684\u67d0\u4e9b\u65b9\u6cd5\u6765\u5b9e\u73b0\u9700\u6c42.<\/p>\n<p>\u4ed6\u9002\u7528\u4e8e\u4e00\u4e2a\u63a5\u53e3\u4e0d\u60f3\u4f7f\u7528\u5176\u4ed6\u6240\u6709\u65b9\u6cd5\u7684\u60c5\u51b5.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241115155525624.png\" alt=\"image-20241115155525624\" style=\"zoom:50%;\" \/><\/p>\n<p><strong>\u53cc\u5411\u9002\u914d\u5668<\/strong><\/p>\n<p>\u76ee\u6807\u7c7b\u548c\u9002\u914d\u8005\u7c7b\u9700\u8981\u76f8\u4e92\u5f15\u7528<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241105225043083.png\" alt=\"image-20241105225043083\" style=\"zoom:33%;\" \/><\/p>\n<p><strong>\u667a\u80fd\u9002\u914d\u5668<\/strong><\/p>\n<p>\u5728\u8f6c\u6362\u5339\u914d\u8fc7\u7a0b\u4e2d, \u5b9e\u73b0\u4e00\u4e9b\u529f\u80fd\u5904\u7406, \u8fdb\u4e00\u6b65\u7684, \u8fd8\u53ef\u4ee5\u6309\u9700\u590d\u7528\u4e0d\u540c\u9002\u914d\u8005<\/p>\n<p><strong>\u9002\u914d\u591a\u4e2a\u9002\u914d\u8005<\/strong><\/p>\n<p>\u5728\u8f6c\u6362\u5339\u914d\u8fc7\u7a0b\u4e2d, \u53ef\u4ee5\u9002\u914d\u591a\u4e2a\u9002\u914d\u8005, \u5373, \u5728\u5b9e\u73b0\u76ee\u6807\u63a5\u53e3\u65f6, \u9700\u8981\u8c03\u7528\u591a\u4e2a\u7c7b\u7684\u529f\u80fd. <\/p>\n<hr \/>\n<h2>\u6865\u63a5\u6a21\u5f0f<\/h2>\n<p><strong>Bridge Pattern, \u67c4\u4f53\u6a21\u5f0f, Handle &amp; Body Pattern, \u63a5\u53e3\u6a21\u5f0f, Interface Pattern<\/strong><\/p>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u8003\u8651\u8fd9\u6837\u7684\u4e00\u4e2a\u5b9e\u4f8b: <\/p>\n<p>\u6211\u4eec\u6709\u5927\u4e2d\u5c0f3\u79cd\u578b\u53f7\u7684\u8721\u7b14, \u6bcf\u79cd\u5927\u5c0f\u7684\u753b\u7b14\u90fd\u9700\u8981\u7ed8\u523612\u79cd\u4e0d\u540c\u7684\u989c\u8272, \u603b\u517136\u652f. <\/p>\n<p>\u5982\u679c\u4f7f\u7528\u6bdb\u7b14, \u53ea\u9700\u89813\u79cd\u578b\u53f7, \u5916\u52a012\u4e2a\u989c\u6599\u76d2\u5373\u53ef. \u4e5f\u5c31\u662f\u8bf4, \u5982\u679c\u589e\u52a0\u4e00\u79cd\u65b0\u7c97\u7ec6, \u8721\u7b14\u9700\u8981\u589e\u52a012\u652f, \u800c\u6bdb\u7b14\u53ea\u9700\u8981\u589e\u52a0\u4e00\u652f.<\/p>\n<p>\u5728\u8721\u7b14\u4e2d, \u989c\u8272\u548c\u578b\u53f7\u4e24\u4e2a\u4e0d\u540c\u7684\u53d8\u5316\u7ef4\u5ea6\u878d\u5408\u5728\u4e00\u8d77, \u65e0\u8bba\u662f\u6539\u53d8\u8c01\u90fd\u4f1a\u5f71\u54cd\u53e6\u4e00\u65b9.<\/p>\n<p>\u5728\u6bdb\u7b14\u4e2d, \u8fd9\u4e24\u4e2a\u7ef4\u5ea6\u88ab\u5206\u79bb\u4e86, \u589e\u52a0\u65b0\u7684\u989c\u8272\u6216\u8005\u578b\u53f7\u5bf9\u53e6\u4e00\u65b9\u6ca1\u6709\u5f71\u54cd.<\/p>\n<p>\u6865\u63a5\u6a21\u5f0f\u88ab\u7528\u4f5c\u5904\u7406\u7c7b\u4f3c\u7684, \u5177\u6709\u53d8\u5316\u7ef4\u5ea6\u7684\u60c5\u51b5. <strong>\u6865\u63a5\u6a21\u5f0f\u5c06\u62bd\u8c61\u90e8\u5206\u4e0e\u5b9e\u73b0\u90e8\u5206\u5206\u79bb, \u4f7f\u4ed6\u4eec\u53ef\u4ee5\u72ec\u7acb\u7684\u53d8\u5316.<\/strong> \u4ed6\u662f\u5bf9\u8c61\u7ed3\u6784\u578b\u6a21\u5f0f.<\/p>\n<p>\u4e0e\u591a\u91cd\u7ee7\u627f\u65b9\u6848\u4e0d\u540c, \u6865\u63a5\u6a21\u5f0f\u5c06\u4e24\u4e2a\u72ec\u7acb\u53d8\u5316\u7684\u7ef4\u5ea6\u8bbe\u8ba1\u4e3a\u4e24\u4e2a\u72ec\u7acb\u7684\u7ee7\u627f\u7b49\u7ea7\u7ed3\u6784, \u4e14\u5728\u62bd\u8c61\u5c42\u5efa\u7acb\u5173\u8054, \u7c7b\u4f3c\u4e00\u6761\u8fde\u63a5\u4e24\u4e2a\u72ec\u7acb\u7ee7\u627f\u7ed3\u6784\u7684\u6865, \u6613\u4e8e\u6269\u5c55, \u63a7\u5236\u4e86\u7c7b\u7684\u4e2a\u6570.<\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241107224911718.png\" alt=\"image-20241107224911718\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Abstraction<\/strong>: \u62bd\u8c61\u7c7b, \u4e00\u822c\u4e0d\u662f\u63a5\u53e3, \u5b9a\u4e49\u62bd\u8c61\u7c7b\u7684\u63a5\u53e3. \u542f\u52a8\u5b9a\u4e49\u4e86\u4e00\u4e2aImplementor(\u5b9e\u73b0\u7c7b\u63a5\u53e3)\u7c7b\u578b\u7684\u5bf9\u8c61, \u5e76\u53ef\u4ee5\u7ef4\u62a4\u8be5\u5bf9\u8c61. \u4ed6\u4e0eImplementor\u5177\u6709\u5173\u8054\u5173\u7cfb, \u65e2\u53ef\u4ee5\u5305\u542b\u62bd\u8c61\u4e1a\u52a1\u65b9\u6cd5, \u4e5f\u53ef\u4ee5\u5305\u542b\u5177\u4f53\u4e1a\u52a1\u65b9\u6cd5.<\/li>\n<li><strong>RefinedAbstracion<\/strong>: \u6269\u5145\u62bd\u8c61\u7c7b, \u6269\u5145Abstraction\u5b9a\u4e49\u7684\u63a5\u53e3, \u901a\u5e38\u60c5\u51b5\u4e0b\u662f\u5177\u4f53\u7c7b. \u4ed6\u5b9e\u73b0\u4e86Abstraction\u4e2d\u7684\u62bd\u8c61, \u4e5f\u53ef\u4ee5\u8c03\u7528Implementor\u4e2d\u5b9a\u4e49\u7684\u4e1a\u52a1\u65b9\u6cd5.<\/li>\n<li><strong>Implementor<\/strong>: \u5b9e\u73b0\u7c7b\u63a5\u53e3, \u8fd9\u4e2a\u63a5\u53e3\u4e0d\u4e00\u5b9a\u8981\u4e0eAbstration\u7684\u63a5\u53e3\u5b8c\u5168\u4e00\u81f4. \u901a\u8fc7\u5173\u8054\u5173\u7cfb, Abstraction\u4e2d\u4e0d\u4ec5\u62e5\u6709\u81ea\u5df1\u7684\u65b9\u6cd5, \u8fd8\u53ef\u4ee5\u8c03\u7528Implementor\u7684\u65b9\u6cd5<\/li>\n<li><strong>ConcreteImplementor<\/strong>: \u5177\u4f53\u5b9e\u73b0\u7c7b, \u5b9e\u73b0Implementor\u63a5\u53e3, \u63d0\u4f9b\u5177\u4f53\u4e1a\u52a1\u64cd\u4f5c\u65b9\u6cd5<\/li>\n<\/ul>\n<p><strong>\u5728\u6865\u63a5\u6a21\u5f0f\u4e2d, \u62bd\u8c61\u7c7b\u901a\u5e38\u5b9a\u4e49&quot;\u662f\u4ec0\u4e48&quot;, \u6bd4\u5982\u56fe\u5f62, \u8bbe\u5907\u7b49. \u800c\u63a5\u53e3\u5b9a\u4e49&quot;\u600e\u4e48\u505a&quot;, \u6bd4\u5982\u7ed8\u5236, \u5de5\u4f5c\u7b49.<\/strong><\/p>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u6865\u63a5\u6a21\u5f0f\u4f7f\u7528\u4e86\u5bf9\u8c61\u95f4\u7684\u5173\u8054\u5173\u7cfb\u89e3\u8026\u4e86\u62bd\u8c61\u548c\u5b9e\u73b0\u7684\u7ed1\u5b9a, \u4f7f\u5f97\u62bd\u8c61\u548c\u5b9e\u73b0\u53ef\u4ee5\u6cbf\u7740\u4e2a\u5b57\u7684\u7ef4\u5ea6\u6765\u53d8\u5316.<\/li>\n<li>\u6781\u5927\u7684\u51cf\u5c11\u4e86\u5b50\u7c7b\u7684\u4e2a\u6570, \u6bd4\u7ee7\u627f\u65b9\u6848\u66f4\u597d, <strong>\u7b26\u5408\u201c\u5355\u4e00\u804c\u8d23\u539f\u5219\u201d<\/strong><\/li>\n<li>\u4e24\u4e2a\u7ef4\u5ea6\u53d8\u5316\u4e2d\u4efb\u610f\u6269\u5c55, \u90fd\u4e0d\u9700\u8981\u4fee\u6539\u539f\u6709\u7cfb\u7edf, <strong>\u7b26\u5408\u201c\u5f00\u95ed\u539f\u5219\u201d<\/strong><\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u589e\u52a0\u4e86\u7cfb\u7edf\u7684\u7406\u89e3\u4e0e\u8bbe\u8ba1\u96be\u5ea6<\/li>\n<li>\u8bc6\u522b\u4e24\u4e2a\u72ec\u7acb\u7ef4\u5ea6\u9700\u8981\u4e00\u5b9a\u7ecf\u9a8c<\/li>\n<\/ul>\n<p><strong>\u6865\u63a5\u6a21\u5f0f\u7684\u672c\u8d28: \u5206\u79bb\u62bd\u8c61\u4e0e\u5b9e\u73b0<\/strong><\/p>\n<p><strong>\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\n<p>\u4e00\u4e2a\u7cfb\u7edf\u9700\u8981\u5728\u62bd\u8c61\u8bdd\u548c\u5177\u4f53\u5316\u4e4b\u95f4\u589e\u52a0\u66f4\u591a\u7075\u6d3b\u6027, \u907f\u514d\u5728\u4e24\u4e2a\u5c42\u6b21\u95f4\u7b80\u5386\u9759\u6001\u7ee7\u627f\u5173\u7cfb<\/p>\n<\/li>\n<li>\n<p>\u4e00\u4e2a\u7c7b\u9700\u8981\u4e24\u4e2a(\u6216\u591a\u4e2a)\u53d8\u5316\u7ef4\u5ea6, \u5e76\u4e14\u6bcf\u4e2a\u7ef4\u5ea6\u72ec\u7acb\u6269\u5c55<\/p>\n<\/li>\n<li>\n<p>\u4e0d\u5e0c\u671b\u9002\u7528\u7ee7\u627f, \u6216\u8005\u56e0\u4e3a\u7ee7\u627f\u5bfc\u81f4\u7cfb\u7edf\u7c7b\u4e2a\u6570\u6025\u5267\u589e\u52a0<\/p>\n<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u9002\u914d\u5668\u6a21\u5f0f\u53ef\u4ee5\u548c\u6865\u63a5\u6a21\u5f0f\u8fde\u7528<\/strong><\/p>\n<p>\u6865\u63a5\u6a21\u5f0f\u7528\u4e8e\u521d\u6b65\u8bbe\u8ba1, \u800c\u53d1\u73b0\u521d\u6b65\u8bbe\u8ba1\u548c\u5df2\u6709\u7c7b\u65e0\u6cd5\u534f\u540c\u5de5\u4f5c\u65f6, \u91c7\u7528\u9002\u914d\u5668\u6a21\u5f0f. <\/p>\n<p>\u6709\u65f6\u6d89\u53ca\u7684\u63a5\u53e3\u590d\u6742, \u8bbe\u8ba1\u521d\u671f\u4e5f\u9700\u8981\u8003\u8651\u9002\u914d\u5668\u6a21\u5f0f.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241108002800953.png\" alt=\"image-20241108002800953\" style=\"zoom:33%;\" \/><\/p>\n<hr \/>\n<h2>\u7ec4\u5408\u6a21\u5f0f<\/h2>\n<p><strong>Composite Pattern, \u6574\u4f53-\u90e8\u5206\u6a21\u5f0f, Part-Whole Pattern<\/strong><\/p>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p><strong>\u6811\u5f62\u7ed3\u6784<\/strong>\u5728\u8f6f\u4ef6\u4e2d\u968f\u5904\u53ef\u89c1, \u7ec4\u5408\u6a21\u5f0f\u5c31\u662f\u8981\u7528\u9762\u5411\u5bf9\u8c61\u7684\u65b9\u6cd5\u6765\u5904\u7406\u6811\u5f62\u7ed3\u6784<\/p>\n<p>\u6811\u5f62\u7ed3\u6784\u4e2d, \u5f53\u5bb9\u5668\u5bf9\u8c61\u7684\u67d0\u4e00\u4e2a\u65b9\u6cd5\u88ab\u8c03\u7528\u65f6, \u5c06\u904d\u5386\u6574\u4e2a\u6811\u5f62\u7ed3\u6784, \u9012\u5f52\u8c03\u7528\u65b9\u6cd5. \u7531\u4e8e\u5bb9\u5668\u5bf9\u8c61\u548c\u53f6\u5b50\u5bf9\u8c61\u5728\u529f\u80fd\u4e0a\u6709\u533a\u522b, \u4ee3\u7801\u4e2d\u5fc5\u987b\u533a\u522b\u5bf9\u5f85, \u8fd9\u4f1a\u8ba9\u7a0b\u5e8f\u975e\u5e38\u590d\u6742<\/p>\n<p>\u7ec4\u5408\u6a21\u5f0f\u53ef\u4ee5<strong>\u8ba9\u5ba2\u6237\u7aef\u4e00\u81f4\u7684\u5904\u7406\u6574\u4e2a\u6811\u5f62\u7ed3\u6784<\/strong>, \u4e5f\u53ef\u4ee5\u4e00\u81f4\u7684\u5904\u7406\u53f6\u5b50\u7ed3\u70b9\u548c\u5bb9\u5668\u8282\u70b9.<\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241115163758749.png\" alt=\"image-20241115163758749\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Componet<\/strong>: \u62bd\u8c61\u7ec4\u4ef6, \u63a5\u53e3\u6216\u8005\u62bd\u8c61\u7c7b, \u4e3a\u53f6\u5b50\u7ec4\u4ef6\u548c\u5bb9\u5668\u7ec4\u4ef6\u58f0\u660e\u63a5\u53e3, \u53ef\u4ee5\u5305\u542b\u6240\u6709\u5b50\u7c7b\u5171\u6709\u884c\u4e3a\u7684\u58f0\u660e\u548c\u5b9e\u73b0. \u5b9a\u4e49\u8bbf\u95ee\/\u7ba1\u7406\u5b50\u7ec4\u4ef6\u7684\u65b9\u6cd5, \u5982\u589e\u5220\u67e5\u6539<\/li>\n<li><strong>Leaf<\/strong>: \u53f6\u5b50\u7ec4\u4ef6, \u8868\u793a\u53f6\u5b50\u7ed3\u70b9\u5bf9\u8c61, \u6ca1\u6709\u5b50\u8282\u70b9. \u4ed6\u5b9e\u73b0\u4e86Component\u4e2d\u5b9a\u4e49\u7684\u884c\u4e3a, \u5bf9\u4e8e\u7ba1\u7406\u5b50\u7ec4\u4ef6\u7684\u65b9\u6cd5, \u53ef\u4ee5\u7528\u5f02\u5e38\u7b49\u65b9\u6cd5\u5904\u7406<\/li>\n<li><strong>Composite<\/strong>: \u5bb9\u5668\u7ec4\u4ef6, \u8868\u793a\u5185\u8282\u70b9\u5bf9\u8c61, \u4ed6\u7684\u5b50\u8282\u70b9\u53ef\u4ee5\u662f\u5bb9\u5668, \u4e5f\u53ef\u4ee5\u662f\u53f6\u5b50<\/li>\n<li><strong>Client<\/strong>: \u5ba2\u6237\u7c7b, \u9488\u5bf9Component\u7ec4\u4ef6\u7f16\u7a0b<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u7ec4\u5408\u6a21\u5f0f\u7684\u5173\u952e\u662f\u5b9a\u4e49\u4e00\u4e2a\u62bd\u8c61\u7ec4\u4ef6\u7c7b, \u65e2\u53ef\u4ee5\u4ee3\u8868\u53f6\u5b50\u4e5f\u53ef\u4ee5\u4ee3\u8868\u5bb9\u5668. \u5bf9\u4e8e\u5ba2\u6237\u7aef, \u9700\u8981\u9488\u5bf9\u62bd\u8c61\u7ec4\u4ef6\u7c7b\u7f16\u7a0b, \u65e0\u9700\u77e5\u9053\u4ed6\u8868\u793a\u7684\u662f\u53f6\u5b50\u8fd8\u662f\u5bb9\u5668.<\/p>\n<p>\u5bb9\u5668\u5bf9\u8c61\u548c\u62bd\u8c61\u7ec4\u4ef6\u5efa\u7acb\u805a\u5408\u5173\u8054\u5173\u7cfb, \u5728\u5bb9\u5668\u5bf9\u8c61\u4e2d\u53ef\u4ee5\u5305\u542b\u53f6\u5b50\u548c\u5bb9\u5668, \u4ee5\u6b64\u9012\u5f52\u7ec4\u5408, \u5f62\u6210\u6811\u5f62\u7ed3\u6784.<\/p>\n<p><strong>\u9700\u8981\u6ce8\u610f\u7684\u662f, \u5728\u5b9e\u73b0\u4e1a\u52a1\u65b9\u6cd5\u65f6\u5019, \u5bb9\u5668\u7ec4\u4ef6\u5e94\u8be5\u9012\u5f52\u7684\u8c03\u7528\u5b69\u5b50\u7ec4\u4ef6\u7684\u4e1a\u52a1\u65b9\u6cd5<\/strong><\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u5b9a\u4e49\u4e86\u5305\u542b\u57fa\u672c\u5bf9\u8c61\u548c\u7ec4\u5408\u5bf9\u8c61\u7684\u7c7b\u5c42\u6b21\u7ed3\u6784<\/li>\n<li>\u7edf\u4e00\u4e86\u7ec4\u5408\u5bf9\u8c61\u548c\u53f6\u5b50\u5bf9\u8c61<\/li>\n<li>\u7b80\u5316\u4e86\u5ba2\u6237\u7aef\u8c03\u7528<\/li>\n<li>\u5bb9\u6613\u6269\u5c55<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u5f88\u96be\u9650\u5236\u7ec4\u4ef6\u7c7b\u578b, \u6bd4\u5982\u5f88\u96be\u9650\u5236\u5bb9\u5668\u4e2d\u53ea\u80fd\u5305\u542b\u7279\u5b9a\u7c7b\u578b\u7684\u7ec4\u4ef6(\u53ea\u80fd\u662f\u6811\u679d, \u53ea\u80fd\u662f\u53f6\u5b50\u7b49\u7b49)<\/li>\n<\/ul>\n<p><strong>\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u60f3\u8868\u793a\u6574\u4f53-\u90e8\u5206\u7684\u5c42\u6b21\u7ed3\u6784, \u5e76\u4e14\u7edf\u4e00\u8d77\u6765<\/li>\n<\/ul>\n<p><strong>\u7ec4\u5408\u6a21\u5f0f\u7684\u672c\u8d28: \u7edf\u4e00\u53f6\u5b50\u5bf9\u8c61\u548c\u7ec4\u5408\u5bf9\u8c61<\/strong><\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u900f\u660e\u7ec4\u5408\u6a21\u5f0f<\/strong><\/p>\n<p>\u7ec4\u5408\u6a21\u5f0f\u7684\u6807\u51c6\u5f62\u5f0f, \u5373\u5728\u62bd\u8c61\u7ec4\u4ef6Component\u4e2d\u58f0\u660e\u4e86\u6240\u6709\u7528\u4e8e\u7ba1\u7406\u6210\u5458\u5bf9\u8c61\u7684\u65b9\u6cd5.<\/p>\n<p>\u7f3a\u70b9\u662f\u4e0d\u591f\u5b89\u5168<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241108161655720.png\" alt=\"image-20241108161655720\" style=\"zoom:33%;\" \/><\/p>\n<p><strong>\u5b89\u5168\u7ec4\u5408\u6a21\u5f0f<\/strong><\/p>\n<p>\u5728Component\u4e2d\u4e0d\u58f0\u660e\u7ba1\u7406\u5b69\u5b50\u5bf9\u8c61\u7684\u65b9\u6cd5, \u800c\u662f\u5728Composite\u7c7b\u4e2d\u505a.<\/p>\n<p>\u8fd9\u79cd\u505a\u6cd5\u662f\u5b89\u5168\u7684, \u4f46\u662f\u4e0d\u591f\u900f\u660e, <strong>\u5ba2\u6237\u7aef\u65e0\u6cd5\u9488\u5bf9\u62bd\u8c61\u7f16\u7a0b, \u5fc5\u987b\u533a\u522b\u5bf9\u5f85\u53f6\u5b50\u548c\u5bb9\u5668\u7ec4\u4ef6<\/strong> <\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241108162454210.png\" alt=\"image-20241108162454210\" style=\"zoom:33%;\" \/><\/p>\n<p><strong>\u66f4\u590d\u6742\u7684\u7ec4\u5408\u6a21\u5f0f, \u53ef\u4ee5\u5bf9\u53f6\u5b50\u548c\u5bb9\u5668\u8282\u70b9\u8fdb\u884c\u62bd\u8c61<\/strong><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241114203849597.png\" alt=\"image-20241114203849597\" style=\"zoom:33%;\" \/><\/p>\n<hr \/>\n<h2>\u88c5\u9970\u6a21\u5f0f<\/h2>\n<p><strong>Decorator Pattern, \u6cb9\u6f06\u5de5\u6a21\u5f0f<\/strong><\/p>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u5728\u8f6f\u4ef6\u8bbe\u8ba1\u4e2d, \u6709\u4e24\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5b9e\u73b0\u7ed9\u4e00\u4e2a\u7c7b\u6216\u5bf9\u8c61\u589e\u52a0\u884c\u4e3a\/\u529f\u80fd<\/p>\n<ul>\n<li>\u7ee7\u627f: \u9759\u6001\u7684, \u4e0d\u80fd\u63a7\u5236\u589e\u52a0\u7684\u65b9\u5f0f\u548c\u65f6\u673a<\/li>\n<li>\u5173\u8054: \u5c06\u4e00\u4e2a\u5bf9\u8c61\u5d4c\u5165\u53e6\u4e00\u4e2a, \u6765\u6269\u5c55\u884c\u4e3a, \u8fd9\u79cd\u5bf9\u8c61\u53eb<strong>\u88c5\u9970\u5668<\/strong><\/li>\n<\/ul>\n<p>\u88c5\u9970\u6a21\u5f0f\u52a8\u6001\u7684\u7ed9\u4e00\u4e2a\u5bf9\u8c61\u589e\u52a0\u4e00\u4e9b\u989d\u5916\u6307\u8d23. \u5728\u88c5\u9970\u6a21\u5f0f\u4e2d, \u4e3a\u4e86\u8ba9\u7cfb\u7edf\u6709\u66f4\u597d\u7684\u7075\u6d3b\u548c\u6269\u5c55\u6027, \u901a\u5e38\u5b9a\u4e49\u4e00\u4e2a\u62bd\u8c61\u7684\u88c5\u9970\u7c7b, \u5e76\u5f15\u5165\u53e6\u4e00\u4e2a\u62bd\u8c61\u7ec4\u4ef6\u7c7b. <\/p>\n<p>\u88c5\u9970\u6a21\u5f0f\u901a\u8fc7\u65e0\u9700\u5b9a\u4e49\u5b50\u7c7b\u7684\u65b9\u5f0f\u6269\u5145\u529f\u80fd, \u7b26\u5408<strong>\u5408\u6210\u590d\u7528\u539f\u5219<\/strong><\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241108165116368.png\" alt=\"image-20241108165116368\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Component<\/strong>: \u62bd\u8c61\u7ec4\u4ef6, \u662f\u5177\u4f53\u7ec4\u4ef6\u548c\u62bd\u8c61\u88c5\u9970\u7c7b\u7684\u5171\u540c\u7236\u4eb2, \u58f0\u660e\u5728\u5177\u4f53\u7ec4\u4ef6\u4e2d\u5b9e\u73b0\u7684\u4e1a\u52a1\u65b9\u6cd5. <\/li>\n<li><strong>ConcreteComponent<\/strong>: \u5177\u4f53\u7ec4\u4ef6, Component\u7c7b\u7684\u5b50\u7c7b, \u5b9e\u73b0\u4e86\u4e1a\u52a1\u65b9\u6cd5, \u88c5\u9970\u5668\u4e3a\u4ed6\u589e\u52a0\u989d\u5916\u7684\u6307\u8d23(\u65b9\u6cd5)<\/li>\n<li><strong>Decorator<\/strong>: \u62bd\u8c61\u88c5\u9970\u7c7b, Component\u7c7b\u7684\u5b50\u7c7b, \u7528\u4ee5\u589e\u52a0\u804c\u8d23. \u4ed6\u7ef4\u62a4\u4e00\u4e2a\u6307\u5411\u62bd\u8c61\u7ec4\u4ef6\u5bf9\u8c61\u7684\u5f15\u7528, \u8c03\u7528\u88c5\u9970\u4e4b\u524d\u7ec4\u4ef6\u5bf9\u8c61\u7684\u65b9\u6cd5, \u8fbe\u5230\u88c5\u9970\u7684\u76ee\u7684<\/li>\n<li><strong>ConcreteDecorator<\/strong>: \u5177\u4f53\u88c5\u9970\u7c7b, \u8d1f\u8d23\u6dfb\u52a0\u65b0\u7684\u804c\u8d23. <\/li>\n<\/ul>\n<p><strong>\u9700\u8981\u6ce8\u610f\u7684<\/strong>\u662f\u5728Decorator\u4e2d\u5e76\u672a\u771f\u6b63\u5b9e\u73b0operation()\u65b9\u6cd5, \u800c\u53ea\u662f\u8c03\u7528\u539f\u6709component\u5bf9\u8c61\u7684operation()\u65b9\u6cd5. <\/p>\n<p>Decorator\u6ca1\u6709\u771f\u6b63\u5b9e\u65bd\u88c5\u9970. \u800c\u662f\u63d0\u4f9b\u4e00\u4e2a\u7edf\u4e00\u7684\u63a5\u53e3, \u5c06\u5177\u4f53\u88c5\u9970\u8fc7\u7a0b\u4ea4\u7ed9\u5b50\u7c7b\u5b8c\u6210<\/p>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u5177\u4f53\u7ec4\u4ef6\u7c7b\u548c\u88c5\u9970\u7c7b\u5b9e\u73b0\u4e86\u76f8\u540c\u7684\u62bd\u8c61\u7ec4\u4ef6\u63a5\u53e3, \u6240\u4ee5\u88c5\u9970\u6a21\u5f0f\u4ee5\u5bf9\u5ba2\u6237\u900f\u660e\u7684\u65b9\u5f0f\u52a8\u6001\u7684\u7ed9\u4e00\u4e2a\u5bf9\u8c61\u9644\u52a0\u66f4\u591a\u7684\u8d23\u4efb.<\/p>\n<p><strong>\u5ba2\u6237\u7aef\u5e76\u4e0d\u4f1a\u53d1\u73b0\u5bf9\u8c61\u5728\u88c5\u9970\u524d\u540e\u6709\u4ec0\u4e48\u4e0d\u540c<\/strong>. \u88c5\u9970\u6a21\u5f0f\u5728\u4e0d\u9700\u8981\u521b\u9020\u66f4\u591a\u5b50\u7c7b\u7684\u60c5\u51b5\u4e0b, \u5c06\u5bf9\u8c61\u7684\u529f\u80fd\u52a0\u4ee5\u6269\u5c55.<\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u4ece\u4e3a\u5bf9\u8c61\u6dfb\u52a0\u65b0\u529f\u80fd\u6765\u770b, \u88c5\u9970\u6a21\u5f0f\u6bd4\u7ee7\u627f\u66f4\u7075\u6d3b<\/li>\n<li>\u7b80\u5316\u9ad8\u5c42\u5b9a\u4e49, \u66f4\u5bb9\u6613\u590d\u7528\u529f\u80fd<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u6bcf\u4e2a\u88c5\u9970\u5668\u5b9e\u73b0\u4e00\u4e2a\u529f\u80fd, \u4ea7\u751f\u4e86\u5f88\u591a\u591a\u7c92\u5ea6\u7684\u5bf9\u8c61<\/li>\n<li>\u6bd4\u7ee7\u627f\u66f4\u5bb9\u6613\u51fa\u9519, \u6392\u9519\u4e5f\u5f88\u56f0\u96be, \u591a\u6b21\u88c5\u9970\u7684\u5bf9\u8c61\u9700\u8981\u9010\u7ea7\u6392\u67e5<\/li>\n<\/ul>\n<p><strong>\u88c5\u9970\u6a21\u5f0f\u7684\u672c\u8d28: \u52a8\u6001\u7ec4\u5408<\/strong><\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<ul>\n<li><strong>\u900f\u660e\u88c5\u9970\u6a21\u5f0f<\/strong>: \u8981\u6c42\u5ba2\u6237\u7aef\u5b8c\u5168\u9488\u5bf9\u62bd\u8c61\u7f16\u7a0b(Component\u7c7b), \u4e0d\u5f97\u58f0\u660e\u5177\u4f53\u7ec4\u4ef6\u548c\u5177\u4f53\u88c5\u9970\u7c7b\u578b.<\/li>\n<li><strong>\u534a\u900f\u660e\u88c5\u9970\u6a21\u5f0f(\u591a\u6570\u60c5\u51b5)<\/strong>: \u8fd0\u884c\u7528\u6237\u5728\u5ba2\u6237\u7aef\u58f0\u660e\u5177\u4f53\u7ec4\u4ef6\u548c\u88c5\u9970\u5bf9\u8c61, \u8c03\u7528\u65b0\u589e\u7684\u65b9\u6cd5(addedBehavior())<\/li>\n<\/ul>\n<p><strong>\u9700\u8981\u6ce8\u610f<\/strong><\/p>\n<ul>\n<li>\u5c3d\u53ef\u80fd\u7684\u4fdd\u6301\u88c5\u9970\u7c7b\u7684\u63a5\u53e3\u4e0e\u88ab\u88c5\u9970\u7c7b\u7684\u63a5\u53e3\u76f8\u540c, \u8fd9\u6837\u5bf9\u4e8e\u5ba2\u6237\u7aef\u800c\u8a00, \u53ef\u4ee5\u4e00\u81f4\u5bf9\u5f85. \u4e5f\u5c31\u662f\u8bf4, <strong>\u5c3d\u53ef\u80fd\u7684\u4f7f\u7528\u900f\u660e\u88c5\u9970\u6a21\u5f0f<\/strong><\/li>\n<li>\u5c3d\u53ef\u80fd\u7684\u4fdd\u6301\u5177\u4f53\u7ec4\u4ef6\u7c7b\u7684\u7b80\u6d01<\/li>\n<li>\u5982\u679c\u53ea\u6709\u4e00\u4e2a\u5177\u4f53\u7ec4\u4ef6\u7c7b, \u5219\u88c5\u9970\u7c7b\u53ef\u4ee5\u4f5c\u4e3a\u8be5\u7ec4\u4ef6\u7c7b\u7684\u76f4\u63a5\u5b50\u7c7b<\/li>\n<\/ul>\n<p><strong>\u7b80\u5316\u7684\u88c5\u9970\u6a21\u5f0f<\/strong><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241108174759125.png\" alt=\"image-20241108174759125\" style=\"zoom:33%;\" \/><\/p>\n<hr \/>\n<h2>\u5916\u89c2\u6a21\u5f0f<\/h2>\n<p><strong>Facade Pattern, \u95e8\u9762\u6a21\u5f0f<\/strong><\/p>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u8003\u8651\u4e00\u4e2a\u5ba2\u6237\u4e70\u7535\u8111\u7684\u4f8b\u5b50: \u67d0\u5ba2\u6237\u9700\u8981\u53bb\u7535\u8111\u57ce\u9009\u914d\u4e00\u5957\u7535\u8111,<\/p>\n<ul>\n<li>\u65b9\u6848A: \u81ea\u5df1\u4eb2\u81ea\u53bb\u6bcf\u5bb6\u5668\u6750\u5546\u9009\u8d2d\u6bcf\u79cd\u914d\u4ef6<\/li>\n<li>\u65b9\u6848B: \u627e\u4e00\u5bb6\u4e13\u4e1a\u88c5\u673a\u7684\u516c\u53f8, \u7531\u516c\u53f8\u8d1f\u8d23\u9009\u914d<\/li>\n<\/ul>\n<p>\u663e\u7136B\u65b9\u4fbf\u4e00\u4e9b, \u4ece\u62bd\u8c61\u5c42\u9762\u6765\u8bf4, \u516c\u53f8\u9690\u853d\u4e86\u7535\u8111\u57ce\u5185\u90e8\u7684\u590d\u6742\u6027.<\/p>\n<p>\u5916\u89c2\u6a21\u5f0f\u4e3a\u5b50\u7cfb\u7edf\u7684\u4e00\u7ec4\u63a5\u53e3\u63d0\u4f9b\u4e00\u4e2a\u7edf\u4e00\u7684\u5165\u53e3. \u4ed6\u5b9a\u4e49\u4e86\u4e00\u4e2a\u9ad8\u5c42\u63a5\u53e3, \u8fd9\u4e2a\u63a5\u53e3\u4f7f\u5f97\u8fd9\u4e9b\u5b50\u7cfb\u7edf\u66f4\u52a0\u5bb9\u6613\u4f7f\u7528.<\/p>\n<p>\u5916\u89c2\u6a21\u5f0f\u4e2d, \u4e00\u4e2a\u5b50\u7cfb\u7edf\u7684\u5916\u90e8\u4e0e\u5185\u90e8\u7684\u901a\u4fe1\u901a\u8fc7\u7edf\u4e00\u7684\u5916\u89c2\u7c7b\u8fdb\u884c. <\/p>\n<p>\u5916\u89c2\u6a21\u5f0f\u662f<strong>\u8fea\u7c73\u7279\u539f\u5219<\/strong>\u7684\u5177\u4f53\u5b9e\u73b0, \u901a\u8fc7\u5f15\u5165\u65b0\u7684\u5916\u89c2\u89d2\u8272\u964d\u4f4e\u7cfb\u7edf\u590d\u6742\u5ea6\u548c\u8026\u5408\u5ea6. <\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241108212922906.png\" alt=\"image-20241108212922906\" style=\"zoom:33%;\" \/><br \/>\n<img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241108213025391.png\" alt=\"image-20241108213025391\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li>\n<p><strong>Facade<\/strong>: \u5916\u89c2\u89d2\u8272, \u5ba2\u6237\u53ef\u4ee5\u8c03\u7528\u4ed6\u7684\u65b9\u6cd5. \u4ed6\u5c06\u5ba2\u6237\u53d1\u6765\u7684\u8bf7\u6c42\u59d4\u6d3e\u5230\u76f8\u5e94\u7684\u5b50\u7cfb\u7edf, \u4f20\u9012\u7ed9\u76f8\u5e94\u7684\u5b50\u7cfb\u7edf\u5904\u7406.<\/p>\n<\/li>\n<li>\n<p><strong>SubSystem<\/strong>: \u5b50\u7cfb\u7edf\u89d2\u8272, \u53ef\u4ee5\u4e0d\u662f\u5355\u72ec\u7684\u7c7b, \u800c\u662f\u7c7b\u7684\u96c6\u5408. <strong>\u5b50\u7cfb\u7edf\u4e0d\u77e5\u9053\u5916\u89c2\u7684\u5b58\u5728.<\/strong><\/p>\n<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p><strong>\u548c\u9002\u914d\u5668\u6a21\u5f0f\u7684\u4e3b\u8981\u533a\u522b<\/strong><\/p>\n<ul>\n<li>\u5916\u89c2\u6a21\u5f0f: \u6ce8\u91cd<strong>\u9690\u85cf\u590d\u6742\u6027<\/strong> <\/li>\n<li>\u9002\u914d\u5668\u6a21\u5f0f: \u6ce8\u91cd<strong>\u8f6c\u6362\u73b0\u6709\u7c7b\u7684\u63a5\u53e3\u6765\u6ee1\u8db3\u76ee\u6807\u63a5\u53e3\u7684\u8981\u6c42<\/strong><\/li>\n<\/ul>\n<p>\u4e3a\u4e86\u8282\u7ea6\u8d44\u6e90, \u5916\u89c2\u7c7b\u7ecf\u5e38\u88ab\u8bbe\u8ba1\u4e3a<strong>\u5355\u4f8b<\/strong><\/p>\n<p><strong>\u5916\u89c2\u6a21\u5f0f\u7684\u672c\u8d28\u662f\u5c01\u88c5\u4ea4\u4e92, \u7b80\u5316\u8c03\u7528<\/strong><\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u5bf9\u5ba2\u6237\u7aef\u5c4f\u853d\u4e86\u5b50\u7cfb\u7edf\u7ec4\u4ef6, \u51cf\u5c11\u4e86\u5ba2\u6237\u7aef\u6240\u9700\u5904\u7406\u7684\u5bf9\u8c61\u6570<\/li>\n<li>\u5b9e\u73b0\u4e86\u5ba2\u6237\u4e0e\u5b50\u7cfb\u7edf\u7684\u677e\u8026\u5408\u5173\u7cfb<\/li>\n<li>\u53ea\u662f\u63d0\u4f9b\u4e86\u7edf\u4e00\u5165\u53e3, \u4e0d\u5f71\u54cd\u5ba2\u6237\u5355\u72ec\u8bbf\u95ee\u5b50\u7cfb\u7edf<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u8bbe\u8ba1\u4e0d\u5f53\u4f1a\u9020\u6210\u589e\u52a0\u65b0\u7684\u5b50\u7cfb\u7edf\u9700\u8981\u4fee\u6539\u5916\u89c2\u7c7b\u7684\u6e90\u4ee3\u7801, \u8fd9<strong>\u8fdd\u53cd\u5f00\u95ed\u539f\u5219<\/strong><\/li>\n<li>\u4e0d\u80fd\u9650\u5236\u5ba2\u6237\u7aef\u76f4\u63a5\u8bbf\u95ee\u5b50\u7cfb\u7edf\u7c7b, \u5982\u679c\u505a\u51fa\u9650\u5236\u53cd\u800c\u51cf\u5c11\u4e86\u53ef\u53d8\u6027<\/li>\n<\/ul>\n<p><strong>\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u4e3a\u4e00\u6574\u4e2a\u590d\u6742\u5b50\u7cfb\u7edf\u63d0\u4f9b\u4e00\u4e2a\u7b80\u5355\u63a5\u53e3, \u8fd9\u4e2a\u63a5\u53e3\u9002\u5408\u5927\u90e8\u5206\u4eba, \u7528\u6237\u4e5f\u53ef\u4ee5\u9009\u62e9\u7ed5\u8fc7<\/li>\n<li>\u5ba2\u6237\u7aef\u4e0e\u591a\u4e2a\u5b50\u7cfb\u7edf\u5b58\u5728\u5f88\u5927\u4f9d\u8d56, \u6b64\u65f6\u5f15\u5165\u5916\u89c2\u7c7b\u53ef\u4ee5\u7ed9\u5ba2\u6237\u7aef\u548c\u5b50\u7cfb\u7edf\u89e3\u85d5<\/li>\n<li>\u5728\u5c42\u6b21\u5316\u7ed3\u6784\u4e2d, \u53ef\u4ee5\u7528\u5916\u89c2\u6a21\u5f0f\u5b9a\u4e49\u6bcf\u4e00\u5c42\u7684\u5165\u53e3<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<ul>\n<li>\u7279\u6b8a\u60c5\u51b5\u4e0b, \u4e00\u4e2a\u7cfb\u7edf\u53ef\u4ee5\u6709\u591a\u4e2a\u5916\u89c2\u7c7b<\/li>\n<li><strong>\u4e0d\u8981\u8bd5\u56fe\u901a\u8fc7\u5916\u89c2\u7c7b\u4e3a\u5b50\u7cfb\u7edf\u589e\u52a0\u65b0\u7684\u884c\u4e3a<\/strong><\/li>\n<li>\u7279\u6b8a\u60c5\u51b5\u4e0b, \u53ef\u4ee5\u4f7f\u7528\u62bd\u8c61\u5916\u89c2\u7c7b<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241108214823814.png\" alt=\"image-20241108214823814\" style=\"zoom:33%;\" \/><\/p>\n<hr \/>\n<h2>\u4ee3\u7406\u6a21\u5f0f<\/h2>\n<p><strong>Proxy Pattern, Surrogate Pattern<\/strong><\/p>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u7531\u4e8e\u67d0\u4e9b\u539f\u56e0, \u5ba2\u6237\u7aef\u4e0d\u60f3\u6216\u4e0d\u80fd\u76f4\u63a5\u8bbf\u95ee\u4e00\u4e2a\u5bf9\u8c61, \u6b64\u65f6\u53ef\u4ee5\u901a\u8fc7\u4ee3\u7406\u6a21\u5f0f\u7684\u7b2c\u4e09\u8005\u8fdb\u884c\u8bbf\u95ee<\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241108221044832.png\" alt=\"image-20241108221044832\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Subjec<\/strong>t: \u62bd\u8c61\u4e3b\u9898\u89d2\u8272, \u58f0\u660e\u771f\u5b9e\u4e3b\u9898\u548c\u4ee3\u7406\u4e3b\u9898\u7684\u5171\u540c\u63a5\u53e3, \u8fd9\u6837\u4ee5\u6765, \u4efb\u4f55\u4f7f\u7528\u771f\u6b63\u4e3b\u9898\u7684\u5730\u65b9\u90fd\u53ef\u4ee5\u4f7f\u7528\u4ee3\u7406\u4e3b\u9898. \u5ba2\u6237\u7aef\u9488\u5bf9\u62bd\u8c61\u4e3b\u9898\u8fdb\u884c\u7f16\u7a0b. \u62bd\u8c61\u4e3b\u9898<strong>\u53ef\u4ee5\u662f\u63a5\u53e3, \u62bd\u8c61\u7c7b\u6216\u5177\u4f53\u7c7b<\/strong><\/li>\n<li><strong>RealSubject<\/strong>: \u771f\u5b9e\u4e3b\u9898\u89d2\u8272, \u5b9a\u4e49\u4ee3\u7406\u89d2\u8272\u6240\u4ee3\u8868\u7684\u771f\u5b9e\u5bf9\u8c61.<\/li>\n<li><strong>Proxy<\/strong>: \u4ee3\u7406\u4e3b\u9898\u89d2\u8272, \u4ed6\u5305\u542b\u5bf9\u771f\u5b9e\u4e3b\u9898\u7684\u5f15\u7528. \u6b64\u5916, \u53ef\u4ee5\u5728\u5fc5\u8981\u65f6\u8d1f\u8d23\u521b\u5efa\/\u5220\u9664\u771f\u5b9e\u4e3b\u9898. \u5728\u4ee3\u7406\u6a21\u5f0f\u4e2d, \u5ba2\u6237\u5728\u8c03\u7528\u771f\u5b9e\u4e3b\u9898\u64cd\u4f5c\u4e4b\u540e, \u4ee3\u7406\u8fd8\u6709\u5176\u4ed6\u64cd\u4f5c\u8981\u505a.<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d, \u4ee3\u7406\u7c7b\u7684\u5b9e\u73b0\u5f88\u590d\u6742. \u6839\u636e\u76ee\u7684\u548c\u5b9e\u73b0\u65b9\u5f0f\u53ef\u4ee5\u5206\u4e3a<\/p>\n<ul>\n<li><strong>\u8fdc\u7a0b\u4ee3\u7406<\/strong>: \u4e3a\u4f4d\u4e8e\u4e0d\u540c\u5730\u5740\u7a7a\u95f4\u7684\u8fdc\u7a0b\u5bf9\u8c61\u63d0\u4f9b\u4e00\u4e2a\u672c\u5730\u7684\u4ee3\u7406<\/li>\n<li><strong>\u865a\u62df\u4ee3\u7406<\/strong>: \u5982\u679c\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u8d44\u6e90\u7a0d\u5927\u7684\u5bf9\u8c61, \u53ef\u4ee5\u5148\u521b\u5efa\u4e00\u4e2a\u8d44\u6e90\u8f83\u5c0f\u7684\u5bf9\u8c61\u6765\u8868\u793a, \u771f\u5b9e\u5bf9\u8c61\u5728\u9700\u8981\u65f6\u624d\u88ab\u521b\u5efa<\/li>\n<li><strong>\u4fdd\u62a4\u4ee3\u7406<\/strong>: \u63a7\u5236\u4e00\u4e2a\u5bf9\u8c61\u7684\u8bbf\u95ee, \u4e3a\u4e0d\u540c\u7684\u7528\u6237\u63d0\u4f9b\u4e0d\u540c\u7ea7\u522b\u7684\u4f7f\u7528\u6743\u9650<\/li>\n<li><strong>\u7f13\u51b2\u4ee3\u7406<\/strong>: \u63d0\u4f9bCache<\/li>\n<li><strong>\u667a\u80fd\u5f15\u7528\u4ee3\u7406<\/strong>: \u63d0\u4f9b\u989d\u5916\u64cd\u4f5c, \u6bd4\u5982\u5c06\u8c03\u7528\u6b21\u6570\u8bb0\u5f55\u4e0b\u6765\u7b49<\/li>\n<li><strong>\u9632\u706b\u5899\u4ee3\u7406<\/strong><\/li>\n<li><strong>\u540c\u6b65\u4ee3\u7406<\/strong>: \u4e3a\u591a\u7ebf\u7a0b\u63d0\u4f9b\u5b89\u5168\u8bbf\u95ee<\/li>\n<li><strong>\u5199\u5165\u590d\u5236\u4ee3\u7406<\/strong>: \u5ef6\u8fdf\u590d\u5236\u64cd\u4f5c\u76f4\u5230\u7c98\u8d34<\/li>\n<\/ul>\n<p><strong>\u4ee3\u7406\u6a21\u5f0f\u7684\u672c\u8d28: \u63a7\u5236\u5bf9\u8c61\u8bbf\u95ee<\/strong><\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u8fdc\u7a0b\u4ee3\u7406\u4e3a\u4e0d\u540c\u5730\u5740\u7a7a\u95f4\u5bf9\u8c61\u7684\u8bbf\u95ee\u63d0\u4f9b\u4e86\u672c\u5730\u5b9e\u73b0<\/li>\n<li>\u865a\u62df\u4ee3\u7406\u7528\u4e34\u65f6\u5bf9\u8c61\u4ee3\u66ff, \u8282\u7701\u8fd0\u884c\u5f00\u9500<\/li>\n<li>\u7f13\u51b2\u4ee3\u7406\u4f18\u5316\u7cfb\u7edf\u6027\u80fd<\/li>\n<li>\u4fdd\u62a4\u4ee3\u7406\u63d0\u4f9b\u5b89\u5168<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u4ee3\u7406\u5bf9\u8c61\u62d6\u6162\u4e86\u5904\u7406\u901f\u5ea6<\/li>\n<li>\u6709\u4e9b\u4ee3\u7406\u6a21\u5f0f\u5b9e\u73b0\u975e\u5e38\u590d\u6742<\/li>\n<li><strong>\u7f16\u8bd1\u65f6\u786e\u8ba4\u4e86\u8c01\u4ee3\u7406\u8c01, \u7075\u6d3b\u6027\u8f83\u5dee<\/strong><\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<ul>\n<li>Proxy\u7c7b\u4e2d\u5c01\u88c5\u4e86preRequest\u548cpostRequest\u65b9\u6cd5<\/li>\n<li><strong>\u6807\u51c6\u4ee3\u7406\u6a21\u5f0f\u4e2d, \u5404\u89d2\u8272\u5728\u7f16\u8bd1\u524d\u5c31\u5b58\u5728, \u5e76\u4e14\u6307\u5b9a\u4e86\u4ee3\u7406\u5bf9\u8c61, \u6267\u884c\u6548\u7387\u9ad8, \u4e5f\u53eb\u505a\u9759\u6001\u4ee3\u7406\u6a21\u5f0f<\/strong><\/li>\n<\/ul>\n<hr \/>\n<h1>\u884c\u4e3a\u578b\u6a21\u5f0f<\/h1>\n<p><strong>Behavioral Pattern<\/strong><\/p>\n<h2>\u6982\u8ff0<\/h2>\n<p>\u884c\u4e3a\u578b\u6a21\u5f0f\u662f\u5bf9\u4e0d\u540c\u5bf9\u8c61\u95f4\u5212\u5206\u8d23\u4efb\u548c\u7b97\u6cd5\u7684\u62bd\u8c61. \u4e0d\u4ec5\u5173\u6ce8\u7c7b\u548c\u5bf9\u8c61\u7684\u7ed3\u6784, \u4e14\u91cd\u70b9\u5173\u6ce8\u4ed6\u4eec\u7684\u76f8\u4e92\u4f5c\u7528<\/p>\n<ul>\n<li><strong>\u7c7b\u884c\u4e3a\u578b\u6a21\u5f0f<\/strong>: \u7c7b\u884c\u4e3a\u578b\u6a21\u5f0f\u4f7f\u7528<strong>\u7ee7\u627f\u5173\u7cfb<\/strong>\u5728\u7c7b\u95f4\u5206\u914d\u884c\u4e3a. \u4e3b\u8981\u901a\u8fc7\u591a\u6001\u7b49\u51e0\u4e2a\u65b9\u5f0f\u6765\u5206\u914d\u7236\u7c7b\u4e0e\u5b50\u7c7b\u7684\u804c\u8d23<\/li>\n<li><strong>\u5bf9\u8c61\u884c\u4e3a\u578b\u6a21\u5f0f<\/strong>: \u5bf9\u8c61\u884c\u4e3a\u578b\u6a21\u5f0f\u4f7f\u7528\u5bf9\u8c61\u7684\u805a\u5408\u5173\u8054\u5173\u7cfb\u6765\u5206\u914d\u884c\u4e3a. <strong>\u6839\u636e\u201c\u5408\u6210\u590d\u7528\u539f\u5219\u201d, \u5c3d\u91cf\u4f7f\u7528\u5173\u8054\u5173\u7cfb\u53d6\u4ee3\u7ee7\u627f\u5173\u7cfb. \u56e0\u6b64, \u5927\u90e8\u5206\u884c\u4e3a\u578b\u6a21\u5f0f\u90fd\u662f\u5bf9\u8c61\u884c\u4e3a\u578b\u6a21\u5f0f<\/strong><\/li>\n<\/ul>\n<hr \/>\n<h2>\u804c\u8d23\u94fe\u6a21\u5f0f<\/h2>\n<p><strong>Chain of Responsibility Pattern<\/strong><\/p>\n<h3>\u52a8\u673a\u548c\u5b9a\u4e49<\/h3>\n<p>\u804c\u8d23\u94fe\u6a21\u5f0f\u7528\u4ee5\u5904\u7406\u8bf7\u6c42\u94fe\u5f0f\u4f20\u9012\u7684\u6a21\u5f0f. \u804c\u8d23\u94fe\u53ef\u4ee5\u662f\u4e00\u6761\u76f4\u7ebf, \u4e00\u4e2a\u73af\u6216\u8005\u6811\u5f62. \u94fe\u4e0a\u6bcf\u4e00\u4e2a\u5bf9\u8c61\u90fd\u662f\u8bf7\u6c42\u7684\u5904\u7406\u8005.<\/p>\n<p>\u5ba2\u6237\u7aef\u65e0\u9700\u5173\u5fc3\u8bf7\u6c42\u7684\u5904\u7406\u7ec6\u8282\u548c\u4f20\u9012, \u53ea\u9700\u5c06\u8bf7\u6c42\u53d1\u9001\u5230\u94fe\u4e0a\u5373\u53ef. <strong>\u5c06\u8bf7\u6c42\u53d1\u9001\u548c\u5904\u7406\u89e3\u85d5<\/strong>, \u8fd9\u5c31\u662f\u804c\u8d23\u94fe\u6a21\u5f0f\u7684\u52a8\u673a.<\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241108224347584.png\" alt=\"image-20241108224347584\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Handler<\/strong>: \u62bd\u8c61\u5904\u7406\u8005\u89d2\u8272, \u5b9a\u4e49\u4e86\u4e00\u4e2a\u5904\u7406\u8bf7\u6c42\u7684\u63a5\u53e3, \u4e00\u822c\u8bbe\u8ba1\u4e3a<strong>\u62bd\u8c61\u7c7b<\/strong>, \u8fd8\u6301\u6709\u4e00\u4e2a\u5bf9\u4e0b\u5bb6\u7684\u5f15\u7528(\u53ef\u4ee5\u8bbe\u4e3aprotected).<\/li>\n<li><strong>ConcreteHandler<\/strong>: \u5177\u4f53\u5904\u7406\u8005\u89d2\u8272, \u53ef\u4ee5\u5904\u7406\u8bf7\u6c42. \u5728\u5904\u7406\u4e4b\u524d<strong>\u9700\u8981\u5224\u65ad\u662f\u5426\u6709\u6743\u9650<\/strong>, \u5982\u679c\u6ca1\u6709\u76f4\u63a5\u8f6c\u53d1\u7ed9\u4e0b\u4e00\u4e2a<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u5728\u804c\u8d23\u94fe\u6a21\u5f0f\u91cc, \u5f88\u591a\u5bf9\u8c61\u7531\u6bcf\u4e00\u4e2a\u5bf9\u8c61\u5bf9\u5176\u4e0b\u5bb6\u7684\u5f15\u7528\u800c\u8fde\u63a5\u8d77\u6765\u5f62\u6210\u4e00\u6761\u94fe<\/p>\n<p>\u53d1\u51fa\u8fd9\u4e2a\u8bf7\u6c42\u7684\u5ba2\u6237\u7aef\u5e76\u4e0d\u77e5\u9053\u94fe\u4e0a\u7684\u54ea\u4e00\u4e2a\u5bf9\u8c61\u6700\u7ec8\u5904\u7406\u8fd9\u4e2a\u8bf7\u6c42, \u8fd9\u4f7f\u5f97\u7cfb\u7edf\u53ef\u4ee5\u5728\u4e0d\u5f71\u54cd\u5ba2\u6237\u7aef\u7684\u60c5\u51b5\u4e0b\u52a8\u6001\u5730\u91cd\u65b0\u7ec4\u7ec7\u94fe\u548c\u5206\u914d\u8d23\u4efb<\/p>\n<p>\u804c\u8d23\u94fe\u6a21\u5f0f\u5e76\u4e0d\u521b\u5efa\u804c\u8d23\u94fe, \u4e00\u822c\u662f\u5728\u4f7f\u7528\u8be5\u804c\u8d23\u94fe\u7684\u5ba2\u6237\u7aef\u4e2d\u521b\u5efa\u804c\u8d23\u94fe<\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u804c\u8d23\u94fe\u6a21\u5f0f\u8ba9\u4e00\u4e2a\u5bf9\u8c61\u65e0\u987b\u77e5\u9053\u8bf7\u6c42\u7684\u5904\u7406\u548c\u8f6c\u53d1\u7ec6\u8282. <strong>\u63a5\u6536\u8005\u548c\u53d1\u9001\u8005\u90fd\u6ca1\u6709\u5bf9\u65b9\u660e\u786e\u4fe1\u606f<\/strong><\/li>\n<li>\u53ea\u9700\u8981\u7ef4\u62a4\u4e00\u4e2a\u540e\u7ee7\u8005\u7684\u5f15\u7528, \u5f88\u65b9\u4fbf<\/li>\n<li>\u53ef\u4ee5\u52a8\u6001\u7ec4\u7ec7\u94fe\u6761\u548c\u91cd\u65b0\u5206\u914d\u8d23\u4efb, \u7b26\u5408\u5f00\u95ed\u539f\u5219<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u7531\u4e8e<strong>\u6ca1\u6709\u660e\u786e\u63a5\u6536\u8005<\/strong>, \u5c31\u4e0d\u80fd\u4fdd\u8bc1\u4e00\u5b9a\u6709\u5904\u7406<\/li>\n<li>\u957f\u804c\u8d23\u94fe\u7684\u6548\u7387\u8f83\u4f4e, \u6709\u6b7b\u5faa\u73af\u98ce\u9669<\/li>\n<\/ul>\n<p><strong>\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u6709\u591a\u4e2a\u5bf9\u8c61\u5904\u7406\u540c\u4e00\u4e2a\u8bf7\u6c42, \u5177\u4f53\u8c01\u6765\u5904\u7406\u5728\u8fd0\u884c\u65f6\u523b\u51b3\u5b9a<\/li>\n<li>\u5ba2\u6237\u7aef\u53ea\u9700\u53d1\u9001\u8bf7\u6c42\u5230\u94fe\u4e0a, \u4e0d\u5173\u5fc3\u540e\u7eed<\/li>\n<li>\u9700\u8981\u52a8\u6001\u6539\u53d8\u804c\u8d23\u5148\u540e\u987a\u5e8f<\/li>\n<\/ul>\n<p><strong>\u804c\u8d23\u94fe\u6a21\u5f0f\u7684\u672c\u8d28: \u5206\u79bb\u804c\u8d23, \u52a8\u6001\u7ec4\u5408<\/strong><\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<ul>\n<li><strong>\u7eaf\u804c\u8d23\u94fe<\/strong>: \u8981\u4e48\u627f\u62c5\u5168\u90e8\u8d23\u4efb, \u8981\u4e48\u76f4\u63a5\u8f6c\u53d1, \u4e14\u5fc5\u987b\u6709\u5bf9\u8c61\u5904\u7406\u8bf7\u6c42<\/li>\n<li><strong>\u4e0d\u7eaf\u7684\u804c\u8d23\u94fe<\/strong>: \u53ef\u4ee5\u90e8\u5206\u5904\u7406\u518d\u8f6c\u53d1, \u53ef\u80fd\u5b58\u5728\u4e8b\u4ef6\u672a\u88ab\u5904\u7406<\/li>\n<\/ul>\n<hr \/>\n<h2>\u547d\u4ee4\u6a21\u5f0f<\/h2>\n<p><strong>Command Pattern, \u52a8\u4f5c(Action)\u6a21\u5f0f, \u4e8b\u52a1(Transaction)\u6a21\u5f0f<\/strong><\/p>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u5728\u751f\u6d3b\u4e2d, \u63a7\u5236\u706f\u6ce1, \u6392\u6c14\u6247\u7684\u5f00\u5173\u548c\u7535\u5668\u672c\u8eab\u5e76\u6ca1\u6709\u76f4\u63a5\u5173\u7cfb. \u4e00\u4e2a\u5f00\u5173\u5728\u5b89\u88c5\u4e4b\u540e\u53ef\u80fd\u7528\u6765\u63a7\u5236\u7535\u706f, \u4e5f\u53ef\u80fd\u7528\u6765\u63a7\u5236\u6392\u6c14\u6247.<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u5c06\u5f00\u5173\u7406\u89e3\u6210\u4e00\u4e2a\u8bf7\u6c42\u7684\u53d1\u9001\u8005, \u7535\u706f\u662f\u8bf7\u6c42\u7684\u63a5\u53d7\u8005\u548c\u5904\u7406\u8005. \u8fd9\u4e24\u8005\u5e76\u4e0d\u5b58\u5728\u76f4\u63a5\u8026\u5408\u5173\u7cfb, \u800c\u662f\u901a\u8fc7\u7535\u7ebf\u8fde\u63a5\u5728\u4e00\u8d77. \u4f7f\u7528\u4e0d\u540c\u7684\u7535\u7ebf\u53ef\u4ee5\u8fde\u63a5\u4e0d\u540c\u7684\u8bf7\u6c42\u63a5\u53d7\u8005.<\/p>\n<p>\u6211\u4eec\u5e0c\u671b\u8bbe\u8ba1\u4e00\u79cd\u677e\u8026\u5408\u7684\u65b9\u5f0f\u6765<strong>\u5b8c\u5168\u89e3\u9664<\/strong>\u8bf7\u6c42\u53d1\u9001\u8005\u4e0e\u63a5\u6536\u8005\u7684\u5173\u7cfb. \u5728\u547d\u4ee4\u6a21\u5f0f\u4e2d, \u53d1\u9001\u8005\u548c\u63a5\u6536\u8005\u6ca1\u6709\u76f4\u63a5\u5f15\u7528\u5173\u7cfb, \u53d1\u9001\u8bf7\u6c42\u7684\u5bf9\u8c61\u53ea\u77e5\u9053\u5982\u4f55\u53d1\u9001, \u4e0d\u77e5\u9053\u5982\u4f55\u5904\u7406.<\/p>\n<p>\u547d\u4ee4\u6a21\u5f0f\u5c06\u8bf7\u6c42\u5c01\u88c5\u4e3a\u5bf9\u8c61, \u8ba9\u6211\u4eec\u53ef\u4ee5\u7528\u4e0d\u540c\u8bf7\u6c42\u5bf9\u5ba2\u6237\u53c2\u6570\u5316. \u5bf9\u8bf7\u6c42\u6392\u961f\u6216\u8bb0\u5f55\u65e5\u5fd7, \u4ee5\u53ca\u652f\u6301\u53ef\u64a4\u9500\u64cd\u4f5c. \u547d\u4ee4\u7c7b\u662f\u547d\u4ee4\u6a21\u5f0f\u7684\u6838\u5fc3.<\/p>\n<p>\u547d\u4ee4\u6a21\u5f0f\u662f\u5bf9\u8c61\u884c\u4e3a\u578b\u6a21\u5f0f.<\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241109095814047.png\" alt=\"image-20241109095814047\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Command<\/strong>: \u62bd\u8c61\u547d\u4ee4\u7c7b, \u4e00\u822c\u662f<strong>\u62bd\u8c61\u7c7b\u6216\u8005\u63a5\u53e3<\/strong>, \u5728\u5176\u4e2d\u58f0\u660e\u4e86\u7528\u4e8e\u6267\u884c\u8bf7\u6c42\u7684execute()\u7b49\u65b9\u6cd5<\/li>\n<li><strong>ConcreteCommand<\/strong>: \u5177\u4f53\u547d\u4ee4\u7c7b, \u5bf9\u5e94\u5177\u4f53\u7684\u63a5\u6536\u8005\u5bf9\u8c61, \u5c06\u63a5\u53d7\u8005\u5bf9\u8c61\u7684\u52a8\u4f5c\u7ed1\u5b9a\u5176\u4e2d. \u5728\u5b9e\u73b0execute\u65b9\u6cd5\u7684\u65f6\u5019, \u5c06\u8c03\u7528\u63a5\u53d7\u8005\u7684\u76f8\u5173\u64cd\u4f5caction<\/li>\n<li><strong>Invoker<\/strong>: \u8c03\u7528\u8005, \u5373\u8bf7\u6c42\u53d1\u9001\u8005. \u8c03\u7528\u8005\u4e0d\u9700\u8981\u786e\u5b9a\u63a5\u6536\u8005, \u5728\u8fd0\u884c\u65f6, \u5c06\u5177\u4f53\u547d\u4ee4\u5bf9\u8c61\u6ce8\u5165\u5176\u4e2d, \u518d\u8c03\u7528\u5176execute\u65b9\u6cd5, \u5b9e\u73b0\u95f4\u63a5\u8c03\u7528\u63a5\u53d7\u8005\u7684\u76f8\u5173\u64cd\u4f5c<\/li>\n<li><strong>Receiver<\/strong>: \u63a5\u6536\u8005\u6267\u884c\u5177\u4f53\u4e1a\u52a1\u5904\u7406<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p><strong>\u547d\u4ee4\u6a21\u5f0f\u7684\u672c\u8d28\u662f\u5bf9\u8bf7\u6c42\u8fdb\u884c\u5c01\u88c5<\/strong><\/p>\n<p>\u4e00\u4e2a\u8bf7\u6c42\u5bf9\u5e94\u4e00\u4e2a\u547d\u4ee4, \u5206\u5272\u53d1\u51fa\/\u6267\u884c\u7684\u804c\u8d23. <\/p>\n<p>\u4e00\u4e2a\u8bf7\u6c42\u5bf9\u5e94\u4e00\u4e2a\u64cd\u4f5c: \u53d1\u9001\u8005\u53d1\u9001\u8bf7\u6c42, \u8981\u6c42\u6267\u884c\u67d0\u64cd\u4f5c. \u63a5\u6536\u8005\u6536\u5230\u8bf7\u6c42\u5e76\u6267\u884c\u8be5\u64cd\u4f5c.<\/p>\n<p>\u53d1\u9001\u8005\u4e0d\u5173\u5fc3\u8bf7\u6c42\u5982\u4f55\u88ab\u63a5\u6536, \u662f\u5426\u88ab\u6267\u884c, \u5177\u4f53\u5982\u4f55\u6267\u884c.<\/p>\n<p><strong>\u6a21\u5f0f\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u66f4\u677e\u6563\u7684\u8026\u5408, \u5c06\u8bf7\u6c42\u8005\u548c\u63a5\u6536\u8005\u5b8c\u5168\u89e3\u85d5, \u76f8\u540c\u8bf7\u6c42\u53ef\u4ee5\u5bf9\u5e94\u4e0d\u540c\u63a5\u6536\u8005, \u76f8\u540c\u63a5\u6536\u8005\u4e5f\u53ef\u4ee5\u5904\u7406\u4e0d\u540c\u8bf7\u6c42\u8005<\/li>\n<li>\u66f4\u52a8\u6001\u7684\u63a7\u5236, \u5bf9\u8bf7\u6c42\u7684\u5c01\u88c5\u65b9\u4fbf\u53c2\u6570\u5316, \u961f\u5217\u5316, \u65e5\u5fd7\u5316<\/li>\n<li>\u66f4\u597d\u7684\u6269\u5c55\u6027, \u65b0\u547d\u4ee4\u5f88\u5bb9\u6613\u52a0\u5165, \u65e0\u987b\u4fee\u6539\u4ee3\u7801, \u7b26\u5408\u5f00\u95ed\u539f\u5219<\/li>\n<\/ul>\n<p><strong>\u6a21\u5f0f\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u53ef\u80fd\u5bfc\u81f4\u8fc7\u591a\u7684\u5177\u4f53\u547d\u4ee4\u7c7b<\/li>\n<\/ul>\n<p><strong>\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u9700\u8981\u62bd\u8c61\u51fa\u6267\u884c\u7684\u52a8\u4f5c, \u5e76\u53c2\u6570\u5316<\/li>\n<li>\u547d\u4ee4\u7684\u6392\u5217, \u8bb0\u5f55, \u53d6\u6d88\u91cd\u505a, \u5d29\u6e83\u6062\u590d, <strong>\u4e8b\u52a1\u7cfb\u7edf<\/strong><\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u547d\u4ee4\u961f\u5217<\/strong><\/p>\n<p>\u547d\u4ee4\u961f\u5217\u7684\u5b9e\u73b0\u65b9\u6cd5\u6709\u591a\u79cd, \u5176\u4e2d\u6700\u5e38\u7528\u7684\u4e00\u79cd\u65b9\u5f0f\u662f\u589e\u52a0\u4e00\u4e2aCommandQueue\u7c7b\uff0c\u7531\u8be5\u7c7b\u6765\u8d1f\u8d23\u5b58\u50a8\u591a\u4e2a\u547d\u4ee4\u5bf9\u8c61, \u800c\u4e0d\u540c\u7684\u547d\u4ee4\u5bf9\u8c61\u53ef\u4ee5\u5bf9\u5e94\u4e0d\u540c\u7684\u8bf7\u6c42\u63a5\u6536\u8005<\/p>\n<p>\u547d\u4ee4\u961f\u5217\u7c7b\u4f3c<strong>\u6279\u5904\u7406<\/strong><\/p>\n<p><strong>\u8bf7\u6c42\u65e5\u5fd7<\/strong><\/p>\n<p>\u5c06\u8bf7\u6c42\u7684\u5386\u53f2\u8bb0\u5f55\u4fdd\u5b58\u4e0b\u6765, \u5982\u679c\u7cfb\u7edf\u6545\u969c, \u53ef\u4ee5\u4f5c\u4e3a\u6062\u590d\u673a\u5236<\/p>\n<p>\u8bf7\u6c42\u65e5\u5fd7\u4e5f\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0<strong>\u6279\u5904\u7406<\/strong>, \u5c06\u547d\u4ee4\u961f\u5217\u4e2d\u7684\u6240\u6709\u547d\u4ee4\u5bf9\u8c61\u90fd\u5b58\u50a8\u5728\u4e00\u4e2a\u65e5\u5fd7\u6587\u4ef6\u4e2d, \u6267\u884c\u4e00\u4e2a, \u5220\u9664\u4e00\u4e2a.<\/p>\n<p><strong>\u64a4\u9500\u64cd\u4f5c<\/strong><\/p>\n<p>\u53ef\u4ee5\u5728\u547d\u4ee4\u7c7b\u4e2d\u589e\u52a0\u4e00\u4e2a\u9006\u5411\u64cd\u4f5cundo, \u4e5f\u53ef\u4ee5\u9009\u62e9\u4fdd\u5b58\u5bf9\u8c61\u7684\u5386\u53f2\u72b6\u6001\u6765\u5b9e\u73b0\u64a4\u9500, \u540e\u8005\u53ef\u4ee5\u7528\u5907\u5fd8\u5f55\u6a21\u5f0f\u5b9e\u73b0<\/p>\n<p><strong>\u5b8f\u547d\u4ee4<\/strong><\/p>\n<p>\u5b8f\u547d\u4ee4\u53c8\u79f0\u4e3a\u7ec4\u5408\u547d\u4ee4, \u662f<strong>\u547d\u4ee4\u6a21\u5f0f\u548c\u7ec4\u5408\u6a21\u5f0f\u7684\u8054\u7528<\/strong><\/p>\n<p>\u5f53\u8c03\u7528\u5b8f\u547d\u4ee4\u7684execute()\u65b9\u6cd5\u65f6, \u5c06<strong>\u9012\u5f52\u8c03\u7528<\/strong>\u5b83\u6240\u5305\u542b\u7684\u6bcf\u4e2a\u6210\u5458\u547d\u4ee4\u7684execute()\u65b9\u6cd5.<\/p>\n<p>\u4e00\u4e2a\u5b8f\u547d\u4ee4\u7684\u6210\u5458\u53ef\u4ee5\u662f\u7b80\u5355\u547d\u4ee4, \u8fd8\u53ef\u4ee5\u7ee7\u7eed\u662f\u5b8f\u547d\u4ee4<\/p>\n<hr \/>\n<h2>\u8fed\u4ee3\u5668\u6a21\u5f0f<\/h2>\n<p><strong>Iterator Pattern, \u6e38\u6807(cursor)\u6a21\u5f0f<\/strong><\/p>\n<h3>\u6a21\u5f0f\u52a8\u673a\u548c\u5b9a\u4e49<\/h3>\n<p>\u5728\u73b0\u5b9e\u751f\u6d3b\u4e2d, \u5916\u9762\u901a\u8fc7\u9065\u63a7\u5668\u6765\u64cd\u63a7\u7535\u89c6\u673a. \u7535\u89c6\u673a\u53ef\u4ee5\u770b\u4f5c\u4e00\u4e2a\u5b58\u50a8\u7535\u89c6\u9891\u9053\u7684\u96c6\u5408\u5bf9\u8c61.<\/p>\n<p>\u9065\u63a7\u5668\u7684\u4e3b\u8981\u64cd\u4f5c\u6709\u8fd4\u56de\u4e0a\u4e00\u4e2a, \u8df3\u8f6c\u4e0b\u4e00\u4e2a, \u8df3\u8f6c\u5230\u6307\u5b9a\u9891\u9053. \u7528\u6237\u4e0d\u5173\u5fc3\u9891\u9053\u5177\u4f53\u5982\u4f55\u5b58\u50a8\u5728\u7535\u89c6\u673a\u4e2d.<\/p>\n<p>\u5728\u8f6f\u4ef6\u5f00\u53d1\u4e2d, \u6709\u4e9b\u7c7b\u7528\u6765\u5b58\u50a8\u591a\u4e2a\u6210\u5458\u5bf9\u8c61(\u5143\u7d20), \u8fd9\u79cd\u7c7b\u901a\u5e38\u79f0\u4e3a\u805a\u5408\u7c7b, \u5bf9\u5e94\u5bf9\u8c61\u79f0\u4e3a\u805a\u5408\u5bf9\u8c61.<\/p>\n<p>\u805a\u5408\u7c7b\u6709\u4e24\u4e2a\u804c\u8d23, \u4e00\u662f\u5b58\u50a8\u6570\u636e, \u4e8c\u662f\u904d\u5386\u6570\u636e. \u4ece\u4f9d\u8d56\u6027\u770b, \u524d\u8005\u662f\u57fa\u672c\u804c\u8d23, \u540e\u8005\u5373\u662f\u53ef\u53d8\u5316\u7684, \u53c8\u662f\u53ef\u5206\u79bb\u7684.<\/p>\n<p><strong>\u8fed\u4ee3\u5668\u6a21\u5f0f, \u63d0\u4f9b\u4e00\u79cd\u65b9\u6cd5\u8bbf\u95ee\u805a\u5408\u5bf9\u8c61, \u800c\u4e0d\u66b4\u9732\u8fd9\u4e2a\u5bf9\u8c61\u7684\u5185\u90e8\u8868\u793a.<\/strong> \u8fed\u4ee3\u5668\u6a21\u5f0f\u662f\u5bf9\u8c61\u884c\u4e3a\u578b\u6a21\u5f0f.<\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241110012601251.png\" alt=\"image-20241110012601251\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Iterator<\/strong>: \u62bd\u8c61\u8fed\u4ee3\u5668, \u5b9a\u4e49\u8bbf\u95ee\u548c\u904d\u5386\u5143\u7d20\u7684\u63a5\u53e3<\/li>\n<li><strong>ConcreteIterator<\/strong>: \u5177\u4f53\u8fed\u4ee3\u5668, \u5b9e\u73b0\u62bd\u8c61\u7684\u63a5\u53e3, \u901a\u8fc7\u6e38\u6807\u6765\u8bb0\u5f55\u5f53\u524d\u4f4d\u7f6e, \u901a\u5e38\u662f\u4e00\u4e2a\u8868\u793a\u4f4d\u7f6e\u7684\u975e\u8d1f\u6570<\/li>\n<li><strong>Aggregate<\/strong>: \u62bd\u8c61\u805a\u5408\u7c7b, \u7528\u4e8e\u5b58\u50a8\u548c\u7ba1\u7406\u5143\u7d20\u5bf9\u8c61. \u58f0\u660ecreateIterator()\u65b9\u6cd5\u7528\u4e8e\u521b\u5efa\u8fed\u4ee3\u5668\u5bf9\u8c61, \u5145\u5f53\u5de5\u5382\u89d2\u8272<\/li>\n<li><strong>ConcreteAggregate<\/strong>: \u5177\u4f53\u805a\u5408\u7c7b, \u8d1f\u8d23\u5b58\u50a8\u6570\u636e, \u5b9e\u73b0\u4e86createIterator()\u65b9\u6cd5, \u8be5\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u5177\u4f53\u8fed\u4ee3\u5668<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u8fed\u4ee3\u5668\u6a21\u5f0f\u7684\u5173\u952e\u601d\u60f3\u662f\u628a\u5bf9\u805a\u5408\u5bf9\u8c61\u7684\u904d\u5386\u548c\u8bbf\u95ee\u5206\u79bb\u51fa\u6765, \u653e\u5165\u5355\u72ec\u7684\u8fed\u4ee3\u5668\u7c7b\u4e2d, \u6765\u7b80\u5316\u805a\u5408\u5bf9\u8c61. <\/p>\n<p>\u8fed\u4ee3\u5668\u548c\u805a\u5408\u5bf9\u8c61\u53ef\u4ee5\u72ec\u7acb\u7684\u53d8\u5316, \u52a0\u5f3a\u7075\u6d3b\u6027.<\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u652f\u6301\u4e0d\u540c\u65b9\u5f0f\u904d\u5386\u5bf9\u8c61<\/li>\n<li>\u8fed\u4ee3\u5668\u7b80\u5316\u7684\u805a\u5408\u7c7b<\/li>\n<li>\u62bd\u8c61\u5c42\u8ba9\u589e\u52a0\u65b0\u7684\u805a\u5408\u7c7b\u548c\u8fed\u4ee3\u5668\u7c7b\u5f88\u65b9\u4fbf<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u7c7b\u7684\u4e2a\u6570\u6210\u5bf9\u589e\u52a0<\/li>\n<li>\u62bd\u8c61\u8fed\u4ee3\u5668\u7684\u8bbe\u8ba1\u96be\u5ea6\u8f83\u5927<\/li>\n<\/ul>\n<p><strong>\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u8bbf\u95ee\u4e00\u4e2a\u805a\u5408\u5bf9\u8c61\u7684\u5185\u90e8\u800c\u4e0d\u60f3\u66b4\u9732\u5185\u90e8\u8868\u793a<\/li>\n<li>\u4e3a\u805a\u5408\u5bf9\u8c61\u63d0\u4f9b\u591a\u79cd\u904d\u5386\u65b9\u5f0f<\/li>\n<li>\u4e3a\u904d\u5386\u4e0d\u540c\u7684\u805a\u5408\u7ed3\u6784\u63d0\u4f9b\u7edf\u4e00\u7684\u63a5\u53e3, \u5728\u63a5\u53e3\u7684\u5b9e\u73b0\u4e2d\u4e3a\u4e0d\u540c\u805a\u5408\u7ed3\u6784\u5b9e\u73b0\u4e0d\u540c\u65b9\u5f0f, \u4f46\u662f\u5ba2\u6237\u53ef\u4ee5\u7528\u7edf\u4e00\u65b9\u6cd5\u4f7f\u7528<\/li>\n<\/ul>\n<p><strong>\u8fed\u4ee3\u5668\u6a21\u5f0f\u7684\u672c\u8d28: \u63a7\u5236\u8bbf\u95ee\u805a\u5408\u5bf9\u8c61\u4e2d\u7684\u5143\u7d20<\/strong><\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<ul>\n<li>\u5185\u90e8\u8fed\u4ee3\u5668\u81ea\u5df1\u5b8c\u6210\u8fed\u4ee3<\/li>\n<li>\u5916\u90e8\u8fed\u4ee3\u5668\u9700\u8981\u624b\u52a8next()<\/li>\n<\/ul>\n<hr \/>\n<h2>\u4e2d\u4ecb\u8005\u6a21\u5f0f<\/h2>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u5728QQ\u804a\u5929\u4e2d, \u6709\u4e24\u79cd\u804a\u5929\u65b9\u5f0f: \u7528\u6237\u4e0e\u7528\u6237\u79c1\u804a, \u6216\u8005\u901a\u8fc7QQ\u7fa4\u804a\u5929. \u4f7f\u7528QQ\u7fa4, \u53ef\u4ee5\u4e00\u6b21\u5411\u591a\u4e2a\u7528\u6237\u53d1\u9001\u76f8\u540c\u7684\u4fe1\u606f\u548c\u6587\u4ef6\u800c\u65e0\u9700\u4e00\u4e00\u53d1\u9001.<\/p>\n<p>\u7fa4\u7684\u4f5c\u7528\u5c31\u662f\u5c06\u53d1\u9001\u7684\u4fe1\u606f\u548c\u6587\u4ef6\u8f6c\u53d1\u7ed9\u6bcf\u4e00\u4e2a\u7528\u6237.<\/p>\n<p>\u5728\u67d0\u4e9b\u8f6f\u4ef6\u4e2d, \u7c7b\u4e0e\u5bf9\u8c61\u4e4b\u95f4\u7684\u76f8\u4e92\u8c03\u7528\u5173\u7cfb\u590d\u6742, \u6b64\u65f6\u5f88\u9700\u8981\u4e00\u4e2a\u7c7b\u4f3cQQ\u7fa4\u7684\u4e2d\u95f4\u7c7b\u6765\u534f\u8c03\u8fd9\u4e9b\u7c7b\/\u5bf9\u8c61\u4e4b\u95f4\u7684\u590d\u6742\u5173\u7cfb, \u4ee5\u964d\u4f4e\u7cfb\u7edf\u8026\u5408\u5ea6.<\/p>\n<p>\u5982\u679c\u4e00\u4e2a\u7cfb\u7edf\u4e2d\u5bf9\u8c61\u95f4\u7684\u8054\u7cfb\u5448\u7f51\u72b6, \u591a\u5bf9\u591a\u72b6, \u5c06\u5bfc\u81f4\u7cfb\u7edf\u8fc7\u5ea6\u8026\u5408. \u8fd9\u4e9b\u5bf9\u8c61\u4f1a\u76f8\u4e92\u5f71\u54cd, \u79f0\u4e3a\u540c\u4e8b\u5bf9\u8c61. <\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u5c06\u5bf9\u8c61\u95f4\u7684\u4ea4\u4e92\u884c\u4e3a\u5206\u79bb\u51fa\u6765, \u96c6\u4e2d\u5c01\u88c5\u5728\u4e00\u4e2a\u4e2d\u4ecb\u8005\u5bf9\u8c61\u4e2d, \u7531\u4e2d\u4ecb\u8005\u8fdb\u884c\u7edf\u4e00\u534f\u8c03.\u8fd9\u6837\u4e00\u6765, <strong>\u591a\u5bf9\u591a\u7684\u5173\u7cfb\u5c31\u8f6c\u5316\u4e3a\u4e86\u4e00\u5bf9\u591a\u5173\u7cfb, \u7f51\u72b6\u7ed3\u6784\u8f6c\u5316\u4e3a\u4e86\u661f\u578b\u7ed3\u6784.<\/strong><\/p>\n<p>\u4e2d\u4ecb\u8005\u6a21\u5f0f\u662f\u5bf9\u8c61\u884c\u4e3a\u578b\u6a21\u5f0f.<\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241110210538438.png\" alt=\"image-20241110210538438\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Mediator<\/strong>: \u62bd\u8c61\u4e2d\u4ecb\u8005, \u5b9a\u4e49\u4e00\u4e2a\u63a5\u53e3\u7528\u4ee5<strong>\u540c\u4e8b<\/strong>\u4e4b\u95f4\u7684\u901a\u4fe1<\/li>\n<li><strong>ConcreteMediator<\/strong>: \u5177\u4f53\u4e2d\u4ecb\u8005, \u62bd\u8c61\u4e2d\u4ecb\u8005\u7684\u5b50\u7c7b, \u4ed6\u7ef4\u6301\u5404\u4e2a\u540c\u4e8b\u5bf9\u8c61\u7684\u5f15\u7528\u6765\u534f\u8c03\u5404\u4e2a\u540c\u4e8b\u5bf9\u8c61<\/li>\n<li><strong>Colleague<\/strong>: \u62bd\u8c61\u540c\u4e8b\u7c7b, \u5b9a\u4e49\u540c\u4e8b\u7c7b\u5171\u6709\u7684\u65b9\u6cd5, \u540c\u65f6\u7ef4\u6301\u4e00\u4e2a\u5bf9\u62bd\u8c61\u4e2d\u4ecb\u7c7b\u7684\u5f15\u7528, \u5176\u5b50\u7c7b\u901a\u8fc7\u8be5\u5f15\u7528\u6765\u4e0e\u4e2d\u4ecb\u8005\u901a\u8baf<\/li>\n<li><strong>ConcreteColleague<\/strong>: \u5177\u4f53\u540c\u4e8b\u7c7b<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u4e2d\u4ecb\u8005\u6a21\u5f0f\u7684\u6838\u5fc3\u5728\u4e8e\u5f15\u5165\u4e2d\u4ecb\u8005\u7c7b, \u4ed6\u627f\u62c5\u4e24\u65b9\u9762\u804c\u8d23:<\/p>\n<ul>\n<li>\u5728\u7ed3\u6784\u4e0a\u4e2d\u8f6c<\/li>\n<li>\u5728\u884c\u4e3a\u4e0a\u534f\u8c03<\/li>\n<\/ul>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u540c\u4e8b\u7c7b\u4e4b\u95f4\u7684\u590d\u6742\u5173\u7cfb\u88ab\u89e3\u85d5, \u57fa\u672c\u4e0a\u4e92\u4e0d\u4f9d\u8d56, \u8fd9\u4f7f\u5f97\u540c\u4e8b\u5bf9\u8c61\u53ef\u4ee5\u72ec\u7acb\u7684\u53d8\u5316\u548c\u590d\u7528<\/li>\n<li>\u96c6\u4e2d\u63a7\u5236\u4ea4\u4e92<\/li>\n<li><strong>\u591a\u5bf9\u591a\u7684\u5173\u7cfb\u53d8\u6210\u4e00\u5bf9\u591a\u7684\u5173\u7cfb<\/strong><\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u8fc7\u5ea6\u96c6\u4e2d\u5316<\/li>\n<\/ul>\n<p>\u9002\u7528\u73af\u5883<\/p>\n<ul>\n<li>\u4e00\u7ec4\u5bf9\u8c61\u7684\u901a\u8baf\u65b9\u5f0f\u590d\u6742, \u76f8\u4e92\u4f9d\u8d56, \u7ed3\u6784\u6df7\u4e71<\/li>\n<li>\u4e00\u4e2a\u5bf9\u8c61\u5f15\u7528\u5f88\u591a\u5bf9\u8c61, \u4e14\u76f4\u63a5\u4ea4\u4e92, \u5bfc\u81f4\u96be\u4ee5\u590d\u7528\u8be5\u5bf9\u8c61<\/li>\n<\/ul>\n<p><strong>\u4e2d\u4ecb\u8005\u6a21\u5f0f\u7684\u672c\u8d28: \u5c01\u88c5\u4ea4\u4e92<\/strong><\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u4e2d\u4ecb\u8005\u6a21\u5f0f\u548c\u5916\u89c2\u6a21\u5f0f\u7684\u533a\u522b<\/strong><\/p>\n<ul>\n<li>\u5916\u89c2\u6a21\u5f0f\u7528\u6765\u5c01\u88c5\u4e00\u4e2a\u5b50\u7cfb\u7edf\u5185\u90e8\u7684\u591a\u4e2a\u6a21\u5757, \u76ee\u7684\u662f\u4e3a\u4e86\u5bf9\u5916\u63d0\u4f9b\u7b80\u5355\u7684\u63a5\u53e3<\/li>\n<li>\u4e2d\u4ecb\u8005\u6a21\u5f0f\u7528\u6765\u5c01\u88c5\u5185\u90e8\u591a\u6a21\u5757\u4e4b\u95f4\u591a\u5411\u7684\u4ea4\u4e92, \u76ee\u7684\u662f\u677e\u6563\u591a\u6a21\u5757\u7684\u8026\u5408<\/li>\n<\/ul>\n<hr \/>\n<h2>\u5907\u5fd8\u5f55\u6a21\u5f0f<\/h2>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u4e3a\u4e86\u9632\u6b62\u8f6f\u4ef6\u8bef\u64cd\u4f5c, \u63d0\u4f9b\u7c7b\u4f3c\u201c\u540e\u6094\u836f\u201d\u7684\u673a\u5236, \u8ba9\u8f6f\u4ef6\u7cfb\u7edf\u53ef\u4ee5\u56de\u5230\u8bef\u64cd\u4f5c\u524d\u7684\u72b6\u6001, \u6211\u4eec\u9700\u8981\u4fdd\u5b58\u7528\u6237\u6bcf\u4e00\u6b21\u64cd\u4f5c\u524d\u7684\u72b6\u6001.<\/p>\n<p>\u5907\u5fd8\u5f55\u6a21\u5f0f\u662f\u4e00\u79cd\u7ed9\u8f6f\u4ef6\u63d0\u4f9b\u540e\u6094\u836f\u7684\u673a\u5236, \u901a\u8fc7\u4ed6\u53ef\u4ee5\u8ba9\u7cfb\u7edf\u6062\u590d\u5230\u67d0\u4e00\u7279\u5b9a\u7684\u5386\u53f2\u72b6\u6001.<\/p>\n<p><strong>\u5907\u5fd8\u5f55\u6a21\u5f0f\u5728\u4e0d\u7834\u574f\u5c01\u88c5\u7684\u524d\u63d0\u4e0b, \u6355\u83b7\u4e00\u4e2a\u5bf9\u8c61\u7684\u5185\u90e8\u72b6\u6001, \u5e76\u4fdd\u5b58\u5728\u5916\u90e8. \u8fd9\u6837\u53ef\u4ee5\u5728\u4ee5\u540e\u5c06\u5bf9\u8c61\u6062\u590d\u5230\u8fd9\u4e2a\u72b6\u6001.<\/strong><\/p>\n<p>\u5907\u5fd8\u5f55\u6a21\u5f0f\u662f\u5bf9\u8c61\u884c\u4e3a\u578b\u6a21\u5f0f.<\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241110220658703.png\" alt=\"image-20241110220658703\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Originator<\/strong>: \u539f\u53d1\u5668, \u4e00\u4e2a\u5177\u4f53\u4e1a\u52a1\u7c7b\u7c7b, \u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5907\u5fd8\u5f55, \u5e76\u8bb0\u5f55\u4ed6\u5f53\u524d\u72b6\u6001, \u4e5f\u53ef\u4ee5\u4f7f\u7528\u5907\u5fd8\u5f55\u6765\u6062\u590d. \u4e00\u534a\u6765\u8bf4, \u5c06\u9700\u8981\u7ef4\u62a4\u64a4\u9500\u7684\u7c7b\u8bbe\u8ba1\u4e3a\u539f\u53d1\u5668<\/li>\n<li><strong>Memento<\/strong>: \u5907\u5fd8\u5f55, \u8bb0\u5f55\u539f\u53d1\u5668\u7684\u5185\u90e8\u72b6\u6001, \u89c6\u60c5\u51b5\u51b3\u5b9a\u4fdd\u5b58\u54ea\u4e9b\u72b6\u6001. \u5907\u5fd8\u5f55\u7684\u8bbe\u8ba1\u4e00\u822c\u53c2\u8003\u539f\u53d1\u5668\u8bbe\u8ba1. \u9664\u4e86\u539f\u53d1\u5668\u4e0e\u8d1f\u8d23\u4eba\u7c7b\u5916, \u5907\u5fd8\u5f55\u5bf9\u8c61\u4e0d\u80fd\u63d0\u4f9b\u5176\u4ed6\u7c7b\u4f7f\u7528<\/li>\n<li><strong>Caretaker<\/strong>: \u8d1f\u8d23\u4eba\u53c8\u79f0\u7ba1\u7406\u8005, \u8d1f\u8d23\u4fdd\u5b58, \u4f46\u662f\u4e0d\u80fd\u64cd\u4f5c\u5185\u5bb9\u6216\u8005\u68c0\u67e5. \u8d1f\u8d23\u4eba\u7c7b\u4e2d\u53ef\u4ee5\u5b58\u50a8\u5907\u5fd8\u5f55\u5bf9\u8c61, \u4f46\u662f\u4e0d\u80fd\u4fee\u6539, \u4e5f\u65e0\u9700\u77e5\u9053\u7ec6\u8282<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u5728\u5f00\u53d1\u4e2d, <strong>\u539f\u53d1\u5668\u548c\u5907\u5fd8\u5f55\u7684\u5173\u7cfb\u662f\u5f88\u7279\u6b8a\u7684, \u4ed6\u4eec\u8981\u5206\u4eab\u4fe1\u606f, \u53c8\u4e0d\u80fd\u8ba9\u5176\u4ed6\u7c7b\u77e5\u9053<\/strong><\/p>\n<p>\u9664\u4e86\u539f\u53d1\u5668\u7c7b, \u4e0d\u5141\u8bb8\u5176\u4ed6\u4efb\u4f55\u7c7b\u8c03\u7528\u5907\u5fd8\u5f55\u7c7b\u7684\u6784\u9020\u51fd\u6570\u4e0e\u76f8\u5173\u65b9\u6cd5<\/p>\n<p>C++\u4e2d, \u53ef\u4ee5\u4f7f\u7528friend<\/p>\n<p>Java\u4e2d, \u53ef\u4ee5\u5c06\u5907\u5fd8\u5f55\u548c\u539f\u53d1\u5668\u7c7b\u5b9a\u4e49\u5728\u4e00\u4e2apackage\u4e2d\u6765\u5b9e\u73b0\u5c01\u88c5<\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u63d0\u4f9b\u4e86\u72b6\u6001\u6062\u590d\u7684\u5b9e\u73b0\u673a\u5236<\/li>\n<li>\u5b9e\u73b0\u4e86\u5bf9\u4fe1\u606f\u7684\u5c01\u88c5<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u8d44\u6e90\u6d88\u8017\u8fc7\u5927<\/li>\n<\/ul>\n<h3>\u9002\u7528\u73af\u5883<\/h3>\n<ul>\n<li>\u4fdd\u5b58\u4e00\u4e2a\u5bf9\u8c61\u5728\u67d0\u65f6\u523b\u7684\u72b6\u6001<\/li>\n<li>\u9700\u8981\u5728\u67d0\u65f6\u523b\u4f1a\u6eda<\/li>\n<li>\u9632\u6b62\u5916\u754c\u5bf9\u8c61\u7834\u574f\u5386\u53f2\u72b6\u6001\u7684\u5c01\u88c5<\/li>\n<\/ul>\n<p><strong>\u5907\u5fd8\u5f55\u6a21\u5f0f\u7684\u672c\u8d28: \u4fdd\u5b58\u548c\u6062\u590d\u5185\u90e8\u72b6\u6001<\/strong><\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u591a\u6b21\u64a4\u9500<\/strong><\/p>\n<p>\u5728\u8d1f\u8d23\u4eba\u7c7b\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u96c6\u5408\u6765\u5b58\u50a8\u591a\u4e2a\u5907\u5fd8\u5f55, \u80cc\u4e2a\u5907\u5fd8\u5f55\u4fdd\u5b58\u4e00\u4e2a\u72b6\u6001. \u5728\u64a4\u9500\u65f6, \u53ef\u4ee5\u5bf9\u96c6\u5408\u8fdb\u884c\u9006\u5411\u904d\u5386(undo), \u8fd8\u53ef\u4ee5\u6b63\u5411\u904d\u5386(redo)<\/p>\n<p><strong>\u5907\u5fd8\u5f55\u6a21\u5f0f\u4e0e\u547d\u4ee4\u6a21\u5f0f\u53ef\u4ee5\u7ec4\u5408\u4f7f\u7528<\/strong><\/p>\n<p>\u547d\u4ee4\u6a21\u5f0f\u5b9e\u73b0\u4e2d, \u5728\u64a4\u9500\u548c\u91cd\u505a\u7684\u65f6\u5019, \u53ef\u4ee5\u76f4\u63a5\u7528\u5907\u5fd8\u5f55\u6a21\u5f0f. <\/p>\n<p><strong>\u5907\u5fd8\u5f55\u6a21\u5f0f\u4e0e\u539f\u578b\u6a21\u5f0f\u53ef\u4ee5\u7ec4\u5408\u4f7f\u7528<\/strong><\/p>\n<p>\u539f\u53d1\u5668\u5bf9\u8c61\u521b\u5efa\u5907\u5fd8\u5f55\u7684\u65f6\u5019, \u5982\u679c\u539f\u53d1\u5668\u4e2d\u5168\u90e8\u72b6\u6001\u90fd\u9700\u8981\u4fdd\u5b58, \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662fclone<\/p>\n<hr \/>\n<h2>\u89c2\u5bdf\u8005\u6a21\u5f0f<\/h2>\n<p><strong>Observer Pattern, \u53d1\u5e03-\u8ba2\u9605(Public-Subscrib)\u6a21\u5f0f, \u6a21\u578b-\u89c6\u56fe(Model\/View)\u6a21\u5f0f, \u6e90-\u76d1\u542c\u5668(Source\/Litsener)\u6a21\u5f0f, \u4ece\u5c5e\u8005(Dependents)\u6a21\u5f0f<\/strong><\/p>\n<h3>\u6a21\u5f0f\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u8003\u8651\u4e00\u4e2a\u8ba2\u62a5\u7eb8\u7684\u4f8b\u5b50, \u73b0\u5728\u6709\u591a\u4e2a\u8ba2\u9605\u8005, \u4ed6\u4eec\u5411\u62a5\u793e\u8ba2\u9605\u62a5\u7eb8, \u62a5\u793e\u6309\u65f6\u51fa\u62a5\u7eb8\u5e76\u6295\u9001\u5230\u8ba2\u9605\u8005\u624b\u4e2d<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241111211656328.png\" alt=\"image-20241111211656328\" style=\"zoom:33%;\" \/><\/p>\n<p>\u5f53\u51fa\u7248\u793e\u5bf9\u8c61\u51fa\u7248\u65b0\u62a5\u7eb8\u7684\u65f6\u5019, \u591a\u4e2a\u8ba2\u9605\u8005\u5982\u4f55\u77e5\u9053? \u8ba2\u9605\u8005\u5bf9\u8c61\u5982\u4f55\u5f97\u5230\u62a5\u7eb8\u5185\u5bb9?<\/p>\n<p>\u8fd9\u4e2a\u95ee\u9898\u53ef\u4ee5\u62bd\u8c61\u4e3a: \u5f53\u4e00\u4e2a\u5bf9\u8c61\u7684\u72b6\u6001\u53d1\u751f\u6539\u53d8, \u5982\u4f55\u8ba9\u4f9d\u8d56\u4ed6\u7684\u6240\u6709\u5bf9\u8c61\u5f97\u5230\u901a\u77e5, \u5e76\u8fdb\u884c\u5904\u7406?<\/p>\n<p>\u89c2\u5bdf\u8005\u6a21\u5f0f\u5b9a\u4e49\u5bf9\u8c61\u95f4\u7684\u4e00\u79cd<strong>\u4e00\u5bf9\u591a\u5173\u7cfb<\/strong>, \u4f7f\u5f97\u6bcf\u5f53\u4e00\u4e2a\u5bf9\u8c61\u72b6\u6001\u6539\u53d8\u65f6, \u76f8\u5173\u4f9d\u8d56\u5bf9\u8c61<strong>\u63a5\u5230\u901a\u77e5\u5e76\u88ab\u81ea\u52a8\u66f4\u65b0<\/strong>.<\/p>\n<p>\u89c2\u5bdf\u8005\u6a21\u5f0f\u662f\u4e00\u79cd\u5bf9\u8c61\u884c\u4e3a\u578b\u6a21\u5f0f.<\/p>\n<p>\u89c2\u5bdf\u8005\u6a21\u5f0f\u662f\u4f7f\u7528\u9891\u7387\u6700\u9ad8\u7684\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u4e00. \u5728\u89c2\u5bdf\u8005\u6a21\u5f0f\u4e2d, <strong>\u53d1\u751f\u6539\u53d8\u7684\u5bf9\u8c61\u79f0\u4f5c\u89c2\u5bdf\u76ee\u6807, \u88ab\u901a\u77e5\u7684\u5bf9\u8c61\u79f0\u4e3a\u89c2\u5bdf\u8005.<\/strong> <\/p>\n<p><strong>\u4e00\u4e2a\u89c2\u5bdf\u76ee\u6807\u53ef\u4ee5\u5bf9\u5e94\u591a\u4e2a\u89c2\u5bdf\u8005, \u89c2\u5bdf\u8005\u4e4b\u95f4\u6ca1\u6709\u8054\u7cfb.<\/strong><\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241111212318420.png\" alt=\"image-20241111212318420\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Subject<\/strong>: \u76ee\u6807\u53c8\u79f0\u4e3b\u9898, \u4ed6\u662f\u6307\u88ab\u89c2\u5bdf\u7684\u5bf9\u8c61. \u5728\u76ee\u6807\u4e2d, \u4f1a\u5b9a\u4e49\u4e00\u4e2a\u89c2\u5bdf\u8005\u96c6\u5408. \u4e00\u4e2a\u89c2\u5bdf\u76ee\u6807\u53ef\u4ee5\u63a5\u53d7\u4efb\u610f\u6570\u91cf\u7684\u89c2\u5bdf\u8005. \u540c\u65f6, \u5b9a\u4e49\u901a\u77e5\u65b9\u6cd5notify(). \u76ee\u6807\u7c7b\u53ef\u4ee5\u662f<strong>\u63a5\u53e3\u6216\u8005\u62bd\u8c61\u7c7b<\/strong>.<\/li>\n<li><strong>ConcreteSubject<\/strong>: \u5177\u4f53\u76ee\u6807\u662f\u76ee\u6807\u7c7b\u7684\u5b50\u7c7b. \u901a\u5e38\u5305\u542b\u7ecf\u5e38\u53d1\u751f\u8be5\u8868\u7684\u6570\u636e, \u53d1\u751f\u6539\u53d8\u65f6, \u4f1a\u901a\u77e5\u4ed6\u7684\u89c2\u5bdf\u8005. <u>\u5982\u679c\u65e0\u987b\u6269\u5c55\u76ee\u6807\u7c7b, \u5219\u5177\u4f53\u76ee\u6807\u7c7b\u53ef\u4ee5\u7701\u7565<\/u><\/li>\n<li><strong>Observer<\/strong>: \u62bd\u8c61\u89c2\u5bdf\u8005, \u5c06\u5bf9\u76ee\u6807\u7684\u6539\u53d8\u4f5c\u51fa\u53cd\u5e94, \u4e00\u822c\u5b9a\u4e49\u4e3a<strong>\u63a5\u53e3<\/strong>, \u901a\u5e38\u53ea\u58f0\u660e\u66f4\u65b0\u6570\u636e\u7684\u65b9\u6cd5update.<\/li>\n<li><strong>ConcreteObserver<\/strong>: \u5177\u4f53\u89c2\u5bdf\u8005, \u5176\u4e2d\u7ef4\u62a4\u4e00\u4e2a\u6307\u5411\u5177\u4f53\u76ee\u6807\u5bf9\u8c61\u7684\u5f15\u7528. \u5b9e\u73b0\u4e86update\u65b9\u6cd5. \u901a\u5e38\u5728\u5b9e\u73b0\u65f6, \u53ef\u4ee5\u8c03\u7528\u5177\u4f53\u76ee\u6807\u7c7b\u7684attach\u65b9\u6cd5\u5c06\u81ea\u5df1\u6dfb\u52a0\u5230\u96c6\u5408, detach\u65b9\u6cd5\u5c06\u81ea\u5df1\u5220\u9664<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p><strong>\u4e00\u4e2a\u76ee\u6807\u53ef\u4ee5\u6709\u4efb\u610f\u4e2a\u89c2\u5bdf\u8005, \u4e00\u65e6\u76ee\u6807\u7684\u72b6\u6001\u53d1\u751f\u6539\u53d8, \u6240\u6709\u7684\u89c2\u5bdf\u8005\u90fd\u4f1a\u88ab\u901a\u77e5.<\/strong><\/p>\n<p>\u4f5c\u4e3a\u5bf9\u901a\u77e5\u7684\u54cd\u5e94, \u6bcf\u4e2a\u89c2\u5bdf\u8005\u90fd\u5c06\u76d1\u89c6\u72b6\u6001\u5e76\u540c\u6b65\u81ea\u5df1. \u8fd9\u79cd\u4ea4\u4e92\u4e5f\u88ab\u79f0\u4f5c\u53d1\u5e03\u2014\u8ba2\u9605.<\/p>\n<p>\u6709\u4e9b\u60c5\u51b5\u4e0b, \u5177\u4f53\u89c2\u5bdf\u8005\u5728update\u65f6\u5019\u9700\u8981\u7528\u5230\u5177\u4f53\u76ee\u6807\u7c7b\u7684\u5c5e\u6027, \u56e0\u6b64\u9700\u8981\u7ef4\u62a4\u5bf9\u5177\u4f53\u76ee\u6807\u7c7b\u7684\u5173\u8054\u6216\u8005\u4f9d\u8d56. \u5982\u4e0d\u9700\u8981, \u5219\u53ef\u4ee5\u7701\u7565.<\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u5b9e\u73b0\u4e86\u89c2\u5bdf\u8005\u548c\u76ee\u6807\u95f4\u7684\u62bd\u8c61\u8026\u5408, \u5373\u76ee\u6807\u53ea\u662f\u77e5\u9053\u89c2\u5bdf\u8005\u63a5\u53e3, \u4e0d\u77e5\u9053\u5177\u4f53\u7684\u7c7b, \u4ece\u800c\u5b9e\u73b0\u5177\u4f53\u7c7b\u7684\u89e3\u85d5<\/li>\n<li>\u5b9e\u73b0\u4e86\u52a8\u6001\u8054\u52a8<\/li>\n<li>\u652f\u6301\u5e7f\u64ad\u901a\u8baf<\/li>\n<li>\u6ee1\u8db3\u5f00\u95ed\u539f\u5219<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u6bcf\u6b21\u90fd\u662f\u5e7f\u64ad\u901a\u8baf, \u4e0d\u7ba1\u89c2\u5bdf\u8005\u9700\u4e0d\u9700\u8981, \u90fd\u4f1a\u88ab\u8c03\u7528update\u65b9\u6cd5. \u5982\u679c\u89c2\u5bdf\u8005\u4e0d\u9700\u8981, \u8981\u53ca\u65f6\u89e3\u6ce8\u518c.<\/li>\n<li>\u4e24\u4e2a\u5bf9\u8c61\u4e92\u76f8\u76d1\u89c6\u8981\u6ce8\u610f\u6b7b\u5faa\u73af<\/li>\n<\/ul>\n<p><strong>\u89c2\u5bdf\u8005\u6a21\u5f0f\u7684\u672c\u8d28\u662f\u89e6\u53d1\u8054\u52a8<\/strong><\/p>\n<h3>\u9002\u7528\u73af\u5883<\/h3>\n<ul>\n<li>\u4e00\u4e2a\u5bf9\u8c61\u7684\u6539\u53d8\u5f15\u8d77\u591a\u4e2a\u5176\u4ed6\u5bf9\u8c61\u7684\u6539\u53d8, \u800c\u4e14\u4e0d\u77e5\u9053\u5177\u4f53\u6709\u591a\u5c11, \u5177\u4f53\u662f\u8c01<\/li>\n<li>\u4e24\u4e2a\u62bd\u8c61\u7c7b\u53ef\u4ee5\u72ec\u7acb\u6539\u53d8\u548c\u590d\u7528, \u5e76\u4e14\u6709\u4f9d\u8d56\u5173\u7cfb<\/li>\n<li>\u89e6\u53d1\u94fe\u673a\u5236<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p>\u89c2\u5bdf\u8005\u6a21\u5f0f\u5728Java\u8bed\u8a00\u4e2d\u975e\u5e38\u91cd\u8981, \u5728java.util\u5305\u4e2d\u63d0\u4f9b\u4e86Obserbable\u548cObserver\u63a5\u53e3, \u6784\u6210\u4e86JDK\u5bf9\u89c2\u5bdf\u8005\u6a21\u5f0f\u7684\u652f\u6301.<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528Observer\u63a5\u53e3\u548cObservable\u7c7b\u6765\u4f5c\u4e3a\u89c2\u5bdf\u8005\u6a21\u5f0f\u7684\u62bd\u8c61\u5c42, \u518d\u81ea\u5b9a\u4e49\u5177\u4f53\u89c2\u5bdf\u8005\u7c7b\u548c\u5177\u4f53\u89c2\u5bdf\u76ee\u6807\u7c7b.<\/p>\n<p><strong>MVC\u6a21\u5f0f<\/strong><\/p>\n<p>MVC\u6a21\u5f0f\u5305\u542b\u4e09\u4e2a\u89d2\u8272, \u6a21\u578b(Model), \u89c6\u56fe(View)\u548c\u63a7\u5236\u5668(Controller). \u89c2\u5bdf\u8005\u6a21\u5f0f\u53ef\u4ee5\u7528\u6765\u5b9e\u73b0MVC\u6a21\u5f0f.<\/p>\n<p>\u5176\u4e2d\u6a21\u578b\u662f\u89c2\u5bdf\u76ee\u6807, \u89c2\u5bdf\u8005\u662f\u89c6\u56fe, \u63a7\u5236\u5668\u662f\u4e2d\u4ecb\u8005<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241111224621730.png\" alt=\"image-20241111224621730\" style=\"zoom:33%;\" \/><\/p>\n<hr \/>\n<h2>\u72b6\u6001\u6a21\u5f0f<\/h2>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u5f88\u591a\u4e8b\u7269\u5177\u6709\u591a\u79cd\u72b6\u6001, \u5728\u4e0d\u540c\u72b6\u6001\u4e0b\u4f1a\u5177\u6709\u4e0d\u540c\u7684\u884c\u4e3a, \u72b6\u6001\u5728\u7279\u5b9a\u6761\u4ef6\u4e0b\u8fd8\u4f1a\u53d1\u751f<strong>\u76f8\u4e92\u8f6c\u6362.<\/strong><\/p>\n<p>\u5728UML\u4e2d\u53ef\u4ee5\u4f7f\u7528\u72b6\u6001\u56fe\u63cf\u8ff0\u53d8\u5316,<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241112153723686.png\" alt=\"image-20241112153723686\" style=\"zoom:33%;\" \/><\/p>\n<p>\u5728\u8f6f\u4ef6\u7cfb\u7edf\u4e2d, \u6709\u4e9b\u5bf9\u8c61\u5177\u6709\u591a\u79cd\u72b6\u6001, \u8fd9\u4e9b\u72b6\u6001\u4f1a\u76f8\u4e92\u8f6c\u6362, \u4e14\u5bf9\u8c61\u5728\u4e0d\u540c\u72b6\u6001\u4e0b\u6709\u4e0d\u540c\u7684\u884c\u4e3a. <\/p>\n<p>\u72b6\u6001\u6a21\u5f0f\u5141\u8bb8\u4e00\u4e2a\u5bf9\u8c61\u5728\u5176\u5185\u90e8\u72b6\u6001\u6539\u53d8\u65f6\u6539\u53d8\u884c\u4e3a. \u5bf9\u8c61\u770b\u8d77\u6765\u4f3c\u4e4e\u4fee\u6539\u4e86\u4ed6\u7684\u7c7b.<\/p>\n<p>\u72b6\u6001\u6a21\u5f0f\u662f\u5bf9\u8c61\u884c\u4e3a\u578b\u6a21\u5f0f.<\/p>\n<p><strong>\u72b6\u6001\u6a21\u5f0f\u5c06\u72b6\u6001\u5206\u79bb\u51fa\u6765, \u5c01\u88c5\u5728\u72b6\u6001\u7c7b\u4e2d, \u4f7f\u5f97\u72b6\u6001\u53ef\u4ee5\u7075\u6d3b\u53d8\u5316.<\/strong><\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241112154045286.png\" alt=\"image-20241112154045286\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Context<\/strong>: \u73af\u5883\u7c7b, \u53c8\u79f0\u4e0a\u4e0b\u6587\u7c7b, \u4ed6\u662f\u62e5\u6709\u591a\u79cd\u72b6\u6001\u7684\u5bf9\u8c61. \u5185\u90e8\u7ef4\u62a4\u4e00\u4e2a\u62bd\u8c61\u7c7bState\u7684\u5f15\u7528, \u5b9a\u4e49\u5f53\u524d\u72b6\u6001.<\/li>\n<li><strong>State<\/strong>: \u62bd\u8c61\u72b6\u6001\u7c7b, \u58f0\u660e\u4e86\u4e0d\u540c\u72b6\u6001\u5bf9\u5e94\u7684\u65b9\u6cd5, \u800c\u5728\u5b50\u7c7b\u4e2d\u5b9e\u73b0. \u76f8\u540c\u7684\u65b9\u6cd5\u5199\u5728State\u4e2d, \u4e0d\u76f8\u540c\u7684\u5199\u5728ConcreteState.<\/li>\n<li><strong>ConcreteState<\/strong>: \u5177\u4f53\u72b6\u6001\u7c7b, \u6bcf\u4e00\u4e2a\u5177\u4f53\u72b6\u6001\u7c7b\u5b9e\u73b0\u4e00\u4e2a\u5177\u4f53\u72b6\u6001\u76f8\u5173\u7684\u884c\u4e3a, \u5bf9\u5e94\u5177\u4f53\u72b6\u6001<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u5f15\u5165\u4e86\u4e00\u4e2a\u62bd\u8c61\u7c7b\u8868\u793a\u72b6\u6001, \u73af\u5883\u7c7b\u7ef4\u6301\u4e00\u4e2a\u5bf9\u62bd\u8c61\u72b6\u6001\u7c7b\u7684\u5f15\u7528.<\/p>\n<p>\u73af\u5883\u7c7b\u5b9e\u9645\u4e0a\u662f\u771f\u6b63\u62e5\u6709\u72b6\u6001\u7684\u5bf9\u8c61, \u6211\u4eec\u53ea\u662f\u5c06\u73af\u5883\u7c7b\u4e2d\u4e0e\u72b6\u6001\u6709\u5173\u7684\u4ee3\u7801\u63d0\u53d6\u51fa\u6765\u5c01\u88c5\u5230\u4e13\u95e8\u7684\u72b6\u6001\u7c7b\u4e2d.<\/p>\n<p>\u5728\u5b9e\u9645\u4f7f\u7528\u65f6, State\u5bf9Context\u53ef\u80fd\u4e5f\u5b58\u5728\u4f9d\u8d56\u6216\u8005\u5173\u8054\u5173\u7cfb.<\/p>\n<p>\u901a\u5e38\u6709\u4e24\u79cd\u5b9e\u73b0\u72b6\u6001\u8f6c\u6362\u7684\u65b9\u5f0f:<\/p>\n<ul>\n<li>\u7edf\u4e00\u7531\u73af\u5883\u7c7b\u6765\u8d1f\u8d23\u72b6\u6001\u4e4b\u95f4, \u6b64\u65f6\u4ed6\u5145\u5f53\u72b6\u6001\u7ba1\u7406\u5668\u89d2\u8272. \u63d0\u4f9bchangeState()\u65b9\u6cd5, \u5224\u65ad\u5c5e\u6027\u5e76\u8f6c\u6362\u72b6\u6001<\/li>\n<li>\u7531\u5177\u4f53\u72b6\u6001\u7c7b\u8d1f\u8d23\u72b6\u6001\u5207\u6362. \u5728\u4e1a\u52a1\u65b9\u6cd5\u4e2d\u5224\u65ad\u73af\u5883\u7c7b\u7684\u5c5e\u6027, \u4e3a\u4ed6\u8bbe\u7f6e\u65b0\u7684\u72b6\u6001\u5bf9\u8c61. \u6b64\u65f6\u4e24\u8005\u5c31\u5b58\u5728\u4f9d\u8d56\/\u5173\u8054\u5173\u7cfb<\/li>\n<\/ul>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\n<p>\u7b80\u5316\u5e94\u7528\u903b\u8f91\u63a7\u5236, \u7528\u5355\u72ec\u7684\u7c7b\u5c01\u88c5\u72b6\u6001\u5904\u7406.<\/p>\n<\/li>\n<li>\n<p>\u5e94\u7528\u7a0b\u5e8f\u63a7\u5236\u65f6\u53ea\u5173\u5fc3\u72b6\u6001\u5207\u6362, \u4e0d\u5173\u5fc3\u72b6\u6001\u5bf9\u5e94\u7684\u771f\u6b63\u5904\u7406<\/p>\n<\/li>\n<li>\n<p>\u6269\u5c55\u65b0\u7684\u72b6\u6001\u5f88\u5bb9\u6613<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li><strong>\u589e\u52a0\u65b0\u72b6\u6001\u9700\u8981\u4fee\u6539\u8d1f\u8d23\u72b6\u6001\u8f6c\u6362\u7684\u4ee3\u7801, \u4e0d\u7b26\u5408\u5f00\u95ed\u539f\u5219<\/strong><\/li>\n<li>\u7ed3\u6784\u548c\u5b9e\u73b0\u6bd4\u8f83\u590d\u6742, \u7cfb\u7edf\u4e2d\u7c7b\u548c\u5bf9\u8c61\u8f83\u591a<\/li>\n<\/ul>\n<p><strong>\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u5bf9\u8c61\u7684\u884c\u4e3a\u4f9d\u8d56\u4e8e\u72b6\u6001, \u72b6\u6001\u7684\u6539\u53d8\u5bfc\u81f4\u884c\u4e3a\u7684\u53d8\u5316<\/li>\n<li>\u4ee3\u7801\u4e2d\u5305\u542b\u5927\u91cf\u5224\u65ad\u72b6\u6001\u8bed\u53e5<\/li>\n<\/ul>\n<p><strong>\u72b6\u6001\u6a21\u5f0f\u7684\u672c\u8d28\uff1a\u6839\u636e\u72b6\u6001\u6765\u5206\u79bb\u548c\u9009\u62e9\u884c\u4e3a<\/strong><\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u5171\u4eab\u72b6\u6001<\/strong><\/p>\n<p>\u5728\u6709\u4e9b\u60c5\u51b5\u4e0b\u591a\u4e2a\u73af\u5883\u5bf9\u8c61\u9700\u8981\u5171\u4eab\u540c\u4e00\u4e2a\u72b6\u6001, \u8fd9\u65f6\u5019\u9700\u8981\u5c06\u72b6\u6001\u5bf9\u8c61\u5b9a\u4e49\u4e3a\u73af\u5883\u7684<strong>\u9759\u6001\u6210\u5458\u5bf9\u8c61<\/strong><\/p>\n<p><strong>\u7b80\u5355\u72b6\u6001\u6a21\u5f0f<\/strong><\/p>\n<p>\u7b80\u5355\u72b6\u6001\u6a21\u5f0f\u662f\u6307\u72b6\u6001\u90fd\u76f8\u4e92\u72ec\u7acb, \u65e0\u987b\u8fdb\u884c\u8f6c\u6362\u7684\u72b6\u6001\u6a21\u5f0f. \u8fd9\u79cd\u6a21\u5f0f\u53ef\u4ee5\u5728\u5ba2\u6237\u7aef\u76f4\u63a5\u5b9e\u4f8b\u5316\u72b6\u6001\u7c7b, \u7136\u540e\u5c06\u72b6\u6001\u5bf9\u8c61\u8bbe\u7f6e\u5230\u73af\u5883\u7c7b\u4e2d. <strong>\u8fd9\u79cd\u7b80\u5355\u72b6\u6001\u6a21\u5f0f\u7b26\u5408\u5f00\u95ed\u539f\u5219<\/strong>.<\/p>\n<p><strong>\u53ef\u5207\u6362\u72b6\u6001\u7684\u72b6\u6001\u6a21\u5f0f<\/strong><\/p>\n<p>\u5927\u591a\u6570\u7684\u72b6\u6001\u6a21\u5f0f\u90fd\u662f\u53ef\u5207\u6362\u7684: \u5177\u4f53\u72b6\u6001\u7c7b\u5185\u90e8\u9700\u8981\u8c03\u7528\u73af\u5883\u7c7bContext\u7684setState()\u65b9\u6cd5\u8fdb\u884c\u8f6c\u6362. \u5728\u5177\u4f53\u72b6\u6001\u7c7b\u4e2d\u8c03\u7528\u5230\u73af\u5883\u7c7b\u7684\u65b9\u6cd5, \u56e0\u6b64<strong>\u72b6\u6001\u7c7b\u4e0e\u73af\u5883\u7c7b\u901a\u5e38\u8fd8\u5b58\u5728\u5173\u8054\/\u4f9d\u8d56\u5173\u7cfb.<\/strong><\/p>\n<p><strong>\u589e\u52a0\u65b0\u7684\u72b6\u6001\u7c7b\u53ef\u80fd\u9700\u8981\u4fee\u6539\u5176\u4ed6\u72b6\u6001\u7c7b, \u751a\u81f3\u73af\u5883\u7c7b\u7684\u4ee3\u7801, \u5426\u5219\u7cfb\u7edf\u65e0\u6cd5\u5207\u6362\u5230\u65b0\u72b6\u6001.<\/strong><\/p>\n<p><strong>\u72b6\u6001\u6a21\u5f0f\u548c\u89c2\u5bdf\u8005\u6a21\u5f0f\u7684\u533a\u522b<\/strong><\/p>\n<p>\u4e24\u4e2a\u6a21\u5f0f\u90fd\u662f\u5728\u72b6\u6001\u6539\u53d8\u65f6\u51fa\u53d1\u884c\u4e3a, \u4f46\u89c2\u5bdf\u8005\u6a21\u5f0f\u7684\u884c\u4e3a\u662f\u56fa\u5b9a\u7684, \u5373, \u901a\u77e5\u6240\u6709\u89c2\u5bdf\u8005. \u4f46\u72b6\u6001\u6a21\u5f0f\u6839\u636e\u72b6\u6001\u9009\u62e9\u4e0d\u540c\u7684\u5904\u7406. <\/p>\n<hr \/>\n<h2>\u7b56\u7565\u6a21\u5f0f<\/h2>\n<p><strong>Strategy Pattern, \u653f\u7b56(Policy)\u6a21\u5f0f<\/strong><\/p>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u5728\u5f88\u591a\u60c5\u51b5\u4e0b, \u5b9e\u73b0\u67d0\u4e2a\u76ee\u6807\u7684\u9014\u5f84\u4e0d\u6b62\u4e00\u6761. \u6bd4\u5982\u6211\u4eec\u5916\u51fa\u65c5\u6e38, \u53ef\u4ee5\u9009\u62e9\u591a\u79cd\u51fa\u884c\u65b9\u5f0f, \u9a91\u8f66, \u5750\u706b\u8f66, \u98de\u673a\u7b49. \u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u9009\u62e9.<\/p>\n<p>\u5728\u8f6f\u4ef6\u7cfb\u7edf\u4e2d, \u8981\u5b9e\u73b0\u6392\u5e8f\u529f\u80fd, \u6709\u8bb8\u591a\u7b97\u6cd5\u53ef\u4ee5\u9009\u62e9. \u4e3a\u4e86\u89e3\u51b3\u95ee\u9898, \u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e9b\u72ec\u7acb\u7684\u7c7b\u6765\u5c01\u88c5\u4e0d\u540c\u7684\u7b97\u6cd5, \u6bcf\u4e2a\u7c7b\u5c01\u88c5\u4e00\u4e2a\u5177\u4f53\u7b97\u6cd5. \u5728\u8fd9\u91cc, \u6bcf\u4e00\u4e2a\u5c01\u88c5\u7b97\u6cd5\u7684\u7c7b\u79f0\u4f5c\u7b56\u7565(Strategy)<\/p>\n<p><strong>\u7b56\u7565\u6a21\u5f0f: \u5b9a\u4e49\u4e00\u7cfb\u5217\u7b97\u6cd5, \u5c06\u6bcf\u4e2a\u7b97\u6cd5\u72ec\u7acb\u5c01\u88c5, \u5e76\u53ef\u4ee5\u4e92\u76f8\u66ff\u6362. \u7b56\u7565\u6a21\u5f0f\u8ba9\u7b97\u6cd5\u72ec\u7acb\u4e8e\u5ba2\u6237\u53d8\u5316.<\/strong><\/p>\n<p>\u7b56\u7565\u6a21\u5f0f\u662f\u4e00\u79cd\u5bf9\u8c61\u884c\u4e3a\u578b\u6a21\u5f0f.<\/p>\n<p><strong>\u7b56\u7565\u6a21\u5f0f\u5b8c\u7f8e\u652f\u6301\u5f00\u95ed\u539f\u5219<\/strong><\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241112201954829.png\" alt=\"image-20241112201954829\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>Context<\/strong>: \u73af\u5883\u7c7b, \u4f7f\u7528\u7b97\u6cd5\u7684\u89d2\u8272. \u5728\u89e3\u51b3\u95ee\u9898\u65f6\u53ef\u4ee5\u91c7\u7528\u591a\u79cd\u7b56\u7565. \u7ef4\u6301\u4e00\u4e2a\u5bf9\u62bd\u8c61\u7b56\u7565\u7c7b\u7684\u5f15\u7528.<\/li>\n<li><strong>Strategy<\/strong>: \u62bd\u8c61\u7b56\u7565\u7c7b\u4e3a\u652f\u6301\u7684\u7b97\u6cd5\u58f0\u660e\u62bd\u8c61\u65b9\u6cd5. \u4ed6\u53ef\u4ee5\u662f<strong>\u62bd\u8c61\u7c7b, \u5177\u4f53\u7c7b\u6216\u8005\u63a5\u53e3<\/strong><\/li>\n<li><strong>ConcreteStrategy<\/strong>: \u5177\u4f53\u7b56\u7565\u7c7b, \u5b9e\u73b0\u62bd\u8c61\u7b56\u7565\u7c7b\u5b9a\u4e49\u7684\u62bd\u8c61\u7b56\u7565\u5bf9\u8c61<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p>\u7b56\u7565\u6a21\u5f0f\u5c06\u7b97\u6cd5\u7684\u8d23\u4efb\u548c\u7b97\u6cd5\u672c\u8eab\u5206\u9694\u5f00, \u59d4\u6258\u7ed9\u4e0d\u540c\u5bf9\u8c61\u7ba1\u7406. <\/p>\n<p>\u7b56\u7565\u6a21\u5f0f\u4ec5\u4ec5\u5c01\u88c5\u7b97\u6cd5, \u5e76\u4e0d\u51b3\u5b9a\u4f55\u65f6\u4f7f\u7528\u4f55\u79cd\u7b97\u6cd5. \u7b97\u6cd5\u7684\u8c03\u7528\u7531\u5ba2\u6237\u7aef\u51b3\u5b9a. \u8fd9\u8981\u6c42\u5ba2\u6237\u7aef\u9700\u8981\u7406\u89e3\u5177\u4f53\u7b97\u6cd5\u7684\u533a\u522b, \u81ea\u5df1\u9009\u62e9\u5408\u9002\u7b97\u6cd5.<\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\u63d0\u4f9b\u4e86\u7ba1\u7406\u7b97\u6cd5\u65cf\u7684\u529e\u6cd5, \u7528\u62bd\u8c61\u7b56\u7565\u7c7b\u5b9a\u4e49\u4e86\u7b97\u6cd5\u65cf, \u6070\u5f53\u7684\u7ee7\u627f\u53ef\u4ee5\u628a\u516c\u5171\u4ee3\u7801\u79fb\u52a8\u5230\u62bd\u8c61\u7b56\u7565\u7c7b\u4e2d, \u907f\u514d\u91cd\u590d<\/li>\n<li>\u907f\u514d\u591a\u91cd\u6761\u4ef6\u9009\u62e9\u8bed\u53e5<\/li>\n<li>\u5206\u79bb\u4e86\u9009\u62e9\u7b97\u6cd5\u548c\u6267\u884c\u7b97\u6cd5<\/li>\n<li>\u63d0\u4f9b\u4e86\u66ff\u6362\u7ee7\u627f\u7684\u529e\u6cd5, \u5982\u679c\u4e0d\u4f7f\u7528\u7b56\u7565\u6a21\u5f0f, \u5219\u9700\u8981\u7ee7\u627f\u73af\u5883\u7c7b\u6765\u63d0\u4f9b\u7b97\u6cd5, \u8fd9\u8fdd\u80cc\u5355\u4e00\u804c\u8d23\u539f\u5219.<\/li>\n<li>\u5b8c\u7f8e\u652f\u6301\u5f00\u95ed\u539f\u5219<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u5ba2\u6237\u7aef\u5fc5\u987b\u77e5\u9053\u6240\u6709\u7b56\u7565\u7c7b, \u5e76\u81ea\u884c\u51b3\u5b9a\u9009\u62e9<\/li>\n<li>\u7cfb\u7edf\u4ea7\u751f\u5f88\u591a\u5177\u4f53\u7b56\u7565\u7c7b, \u7ec6\u5c0f\u7684\u53d8\u5316\u4e5f\u4f1a\u4ea7\u751f\u65b0\u7684\u7b56\u7565\u7c7b<\/li>\n<li>\u53ea\u9002\u5408\u6241\u5e73\u7684\u7b97\u6cd5\u7ed3\u6784, \u7b97\u6cd5\u4e4b\u95f4\u5730\u4f4d\u5e73\u7b49, \u5982\u679c\u9700\u8981\u5d4c\u5957\u591a\u4e2a\u7b97\u6cd5, \u53ef\u4ee5\u8003\u8651\u88c5\u9970\u6a21\u5f0f<\/li>\n<\/ul>\n<p><strong>\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u4e00\u4e2a\u7cfb\u7edf\u9700\u8981\u52a8\u6001\u7684\u5728n\u79cd\u7b97\u6cd5\u4e2d\u9009\u62e9\u4e00\u79cd<\/li>\n<li>\u591a\u91cd\u6761\u4ef6\u9009\u62e9\u8bed\u53e5<\/li>\n<\/ul>\n<p>\u7b56\u7565\u6a21\u5f0f\u7684\u672c\u8d28: <strong>\u5206\u79bb\u7b97\u6cd5, \u9009\u62e9\u5b9e\u73b0<\/strong><\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u7b56\u7565\u6a21\u5f0f\u4e0e\u72b6\u6001\u6a21\u5f0f\u7684\u6bd4\u8f83<\/strong><\/p>\n<p>\u5982\u679c\u7cfb\u7edf\u4e2d\u67d0\u4e2a\u7c7b\u7684\u5bf9\u8c61\u5b58\u5728\u591a\u79cd\u72b6\u6001, \u4e0d\u540c\u72b6\u6001\u4e0b\u884c\u4e3a\u6709\u5dee\u5f02, \u800c\u4e14\u8fd9\u4e9b\u72b6\u6001\u4e4b\u95f4\u53ef\u4ee5\u53d1\u751f\u8f6c\u6362, \u5219\u72b6\u6001\u6a21\u5f0f<\/p>\n<p>\u5982\u679c\u7cfb\u7edf\u4e2d\u67d0\u4e2a\u7c7b\u7684\u67d0\u4e00\u884c\u4e3a\u5b58\u5728\u591a\u79cd\u5b9e\u73b0\u65b9\u5f0f, \u800c\u4e14\u8fd9\u4e9b\u5b9e\u73b0\u65b9\u5f0f\u53ef\u4ee5\u4e92\u6362\u65f6\u4f7f\u7528\u7b56\u7565\u6a21\u5f0f<\/p>\n<p>\u4f7f\u7528\u7b56\u7565\u6a21\u5f0f\u65f6, \u5ba2\u6237\u7aef\u9700\u8981\u77e5\u9053\u6240\u9009\u7684\u5177\u4f53\u7b56\u7565\u662f\u54ea\u4e00\u4e2a.<\/p>\n<p>\u800c\u4f7f\u7528\u72b6\u6001\u6a21\u5f0f\u65f6, \u5ba2\u6237\u7aef\u65e0\u987b\u5173\u5fc3\u5177\u4f53\u72b6\u6001\uff0c\u73af\u5883\u7c7b\u7684\u72b6\u6001\u4f1a\u6839\u636e\u7528\u6237\u7684\u64cd\u4f5c\u81ea\u52a8\u8f6c\u6362.<\/p>\n<hr \/>\n<h2>\u6a21\u677f\u65b9\u6cd5\u6a21\u5f0f<\/h2>\n<h3>\u52a8\u673a\u4e0e\u5b9a\u4e49<\/h3>\n<p>\u5728\u751f\u6d3b\u4e2d, \u5f88\u591a\u4e8b\u60c5\u5305\u542b\u51e0\u4e2a\u56fa\u5b9a\u7684\u5b9e\u73b0\u6b65\u9aa4. \u6bd4\u5982\u5403\u996d, \u5305\u542b\u70b9\u5355, \u5403\u4e1c\u897f, \u4ed8\u6b3e\u51e0\u4e2a\u6b65\u9aa4. \u5728\u8fd9\u4e09\u4e2a\u6b65\u9aa4\u4e2d, \u70b9\u5355\u4e70\u5355\u5927\u540c\u5c0f\u5f02, \u5403\u4ec0\u4e48\u6709\u591a\u79cd\u9009\u62e9.<\/p>\n<p>\u5728\u8f6f\u4ef6\u5f00\u53d1\u4e2d, \u67d0\u4e2a\u65b9\u6cd5\u7684\u5b9e\u73b0\u9700\u8981\u591a\u4e2a\u6b65\u9aa4, \u6709\u4e9b\u662f\u56fa\u5b9a\u7684, \u6709\u4e9b\u5e76\u4e0d\u56fa\u5b9a, \u5b58\u5728\u53ef\u53d8\u6027. <\/p>\n<p>\u53ef\u4ee5\u5c06\u56fa\u5b9a\u7684\u65b9\u6cd5\u79f0\u4e3a\u57fa\u672c\u65b9\u6cd5(\u70b9\u5355, \u5403\u4e1c\u897f, \u4e70\u5355), \u800c\u8c03\u7528\u57fa\u672c\u65b9\u6cd5, \u540c\u65f6\u5b9a\u4e49\u57fa\u672c\u65b9\u6cd5\u7684\u6267\u884c\u6b21\u5e8f\u7684\u65b9\u6cd5\u79f0\u4f5c\u6a21\u677f\u65b9\u6cd5(\u8bf7\u5ba2).<\/p>\n<p>\u6a21\u677f\u65b9\u6cd5\u6a21\u5f0f: \u5b9a\u4e49\u4e00\u4e2a\u64cd\u4f5c\u6846\u67b6, \u5c06\u4e00\u4e9b\u6b65\u9aa4\u5ef6\u8fdf\u5230\u5b50\u7c7b\u4e2d. \u6a21\u677f\u65b9\u6cd5\u4f7f\u5f97\u5b50\u7c7b\u53ef\u4ee5\u4e0d\u6539\u53d8\u4e00\u4e2a\u7b97\u6cd5\u7684\u7ed3\u6784\u5373\u53ef\u91cd\u5b9a\u4e49\u7b97\u6cd5\u7684\u7279\u5b9a\u6b65\u9aa4. <\/p>\n<p>\u6a21\u677f\u65b9\u6cd5\u662f\u4e00\u79cd\u7c7b\u884c\u4e3a\u578b\u6a21\u5f0f.<\/p>\n<h3>\u6a21\u5f0f\u7ed3\u6784<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/pic.cirno.fun\/sssn-blog-pics\/image-20241112212439048.png\" alt=\"image-20241112212439048\" style=\"zoom:33%;\" \/><\/p>\n<ul>\n<li><strong>AbstractClass<\/strong>: <strong>\u62bd\u8c61\u7c7b<\/strong>, \u5b9a\u4e49\u4e00\u7cfb\u5217\u57fa\u672c\u64cd\u4f5c, \u53ef\u4ee5\u662f\u5177\u4f53\u7684, \u4e5f\u53ef\u4ee5\u662f\u62bd\u8c61\u7684. \u6bcf\u4e00\u4e2a\u57fa\u672c\u64cd\u4f5c\u5bf9\u5e94\u7b97\u6cd5\u7684\u4e00\u4e2a\u6b65\u9aa4. \u5176\u5b50\u7c7b\u53ef\u4ee5\u91cd\u65b0\u5b9a\u4e49, \u6216\u5b9e\u73b0\u8fd9\u4e9b\u6b65\u9aa4. \u540c\u65f6, \u62bd\u8c61\u7c7b\u8fd8\u5b9e\u73b0\u4e00\u4e2a\u6a21\u677f\u65b9\u6cd5, \u7528\u4ee5\u5b9a\u4e49\u7b97\u6cd5\u6846\u67b6<\/li>\n<li><strong>ConcreteClass<\/strong>: \u5177\u4f53\u7c7b\u662f\u62bd\u8c61\u7c7b\u7684\u5b50\u7c7b, \u5b9e\u73b0\u62bd\u8c61\u64cd\u4f5c, \u4e5f\u53ef\u4ee5\u8986\u76d6\u5177\u4f53\u64cd\u4f5c<\/li>\n<\/ul>\n<h3>\u6a21\u5f0f\u5206\u6790<\/h3>\n<p><strong>\u6a21\u677f\u65b9\u6cd5<\/strong><\/p>\n<p>\u6a21\u677f\u65b9\u6cd5\u662f\u5b9a\u4e49\u5728\u62bd\u8c61\u7c7b\u7684, \u628a\u57fa\u672c\u64cd\u4f5c\u65b9\u6cd5\u7ec4\u5408\u5728\u4e00\u8d77\u5f62\u6210\u7684\u4e00\u4e2a\u603b\u7b97\u6cd5. <\/p>\n<p>\u8fd9\u4e2a\u6a21\u677f\u7531\u5b50\u7c7b\u4e0d\u65ad\u52a0\u4e00\u4fee\u6539\u5b8c\u5168\u7ee7\u627f\u4e0b\u6765.<\/p>\n<p>\u6a21\u677f\u65b9\u6cd5\u6709\u4e00\u4e2a\u5177\u4f53\u65b9\u6cd5templateMethod(), \u6240\u4ee5\u6a21<strong>\u677f\u65b9\u6cd5\u53ea\u80fd\u662f\u62bd\u8c61\u7c7b, \u4e0d\u80fd\u662f\u63a5\u53e3<\/strong>.<\/p>\n<p><strong>\u57fa\u672c\u65b9\u6cd5<\/strong><\/p>\n<p>\u57fa\u672c\u65b9\u6cd5\u662f\u5b9e\u73b0\u7b97\u6cd5\u5404\u4e2a\u6b65\u9aa4\u7684\u5177\u4f53\u65b9\u6cd5, \u662f\u6a21\u677f\u65b9\u6cd5\u7684\u7ec4\u6210\u90e8\u5206. \u57fa\u672c\u65b9\u6cd5\u5206\u4e3a\u4e09\u79cd:<\/p>\n<ul>\n<li><strong>\u62bd\u8c61\u65b9\u6cd5<\/strong>: \u5728\u62bd\u8c61\u7c7b\u58f0\u660e, \u5728\u5177\u4f53\u5b50\u7c7b\u5b9e\u73b0<\/li>\n<li><strong>\u5177\u4f53\u65b9\u6cd5<\/strong>: \u5728\u62bd\u8c61\u7c7b\u6216\u8005\u5177\u4f53\u7c7b\u58f0\u660e\u5e76\u539f\u5730\u5b9e\u73b0<\/li>\n<li><strong>\u94a9\u5b50\u65b9\u6cd5<\/strong>: \u5728\u62bd\u8c61\u7c7b\u6216\u8005\u5177\u4f53\u7c7b\u58f0\u660e\u5e76\u539f\u5730\u5b9e\u73b0, \u5176\u5b50\u7c7b\u52a0\u4ee5\u6269\u5c55. \u901a\u5e38\u5728\u7236\u7c7b\u7ed9\u51fa\u7a7a\u5b9e\u73b0, \u5e76\u4ee5\u7a7a\u5b9e\u73b0\u4f5c\u4e3a\u9ed8\u8ba4\u5b9e\u73b0. \u5f53\u7136\u4e5f\u53ef\u4ee5\u63d0\u4f9b\u975e\u7a7a\u7684\u9ed8\u8ba4\u5b9e\u73b0.<\/li>\n<\/ul>\n<p><strong>\u94a9\u5b50\u65b9\u6cd5<\/strong><\/p>\n<p>\u94a9\u5b50\u65b9\u6cd5\u6709\u4e24\u7c7b, \u7b2c\u4e00\u7c7b\u94a9\u5b50\u65b9\u6cd5\u4e0e\u5177\u4f53\u6b65\u9aa4\u6302\u94a9, \u5b9e\u73b0\u5728\u4e0d\u540c\u6761\u4ef6\u4e0b\u6267\u884c\u6a21\u677f\u65b9\u6cd5\u7684\u4e0d\u540c\u6b65\u9aa4. \u8fd9\u7c7b\u94a9\u5b50\u65b9\u6cd5\u901a\u5e38\u8fd4\u56debool\u7c7b\u578b, \u540d\u53ebisXXX(). \u7528\u4e8e\u5224\u65ad, \u5982\u679c\u6ee1\u8db3\u5219\u6267\u884c.<\/p>\n<pre><code class=\"language-java\">\/\/ \u6a21\u677f\u65b9\u6cd5\npublic void TemplateMethod() {\n  doSomething();\n  doOtherThing();\n  if (isPrint()) {\n    \/\/ \u901a\u8fc7\u94a9\u5b50\u65b9\u6cd5\u6765\u786e\u5b9a\u67d0\u6b65\u9aa4\u662f\u5426\u6267\u884c\n    Print(); \n  }\n}\n\n\/\/ \u94a9\u5b50\u65b9\u6cd5\npublic bool isPrint() {\n  return true;\n}<\/code><\/pre>\n<p>\u7b2c\u4e8c\u7c7b\u94a9\u5b50\u65b9\u6cd5\u662f\u5b9e\u73b0\u4f53\u4e3a\u7a7a\u7684\u5177\u4f53\u65b9\u6cd5, \u5b50\u7c7b\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8986\u76d6\u6216\u8005\u7ee7\u627f. \u4f18\u70b9\u5728\u4e8e\u5982\u679c\u5b50\u7c7b\u6ca1\u6709\u8986\u76d6\u7236\u7c7b\u5b9a\u4e49\u7684\u94a9\u5b50\u65b9\u6cd5, \u7f16\u8bd1\u53ef\u4ee5\u6b63\u5e38\u901a\u8fc7. <\/p>\n<p>\u5728\u6a21\u677f\u65b9\u6cd5\u6a21\u5f0f\u4e2d, \u5b50\u7c7b\u5bf9\u8c61\u5b9a\u4e49\u7684\u65b9\u6cd5\u4f1a\u8986\u76d6\u7236\u7c7b, \u5b9e\u73b0\u5b50\u7c7b\u5bf9\u7236\u7c7b\u884c\u4e3a\u7684<strong>\u53cd\u5411\u63a7\u5236<\/strong>.<\/p>\n<p><strong>\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li>\n<p>\u5728\u7236\u7c7b\u5f62\u5f0f\u5316\u7684\u5b9a\u4e49\u7b97\u6cd5, \u7531\u5b50\u7c7b\u5b9e\u73b0\u7ec6\u8282. \u5b50\u7c7b\u5e76\u4e0d\u4f1a\u6539\u53d8\u6a21\u677f\u65b9\u6cd5\u7684\u6267\u884c\u6b21\u5e8f<\/p>\n<\/li>\n<li>\n<p>\u5728\u7c7b\u5e93\u8bbe\u8ba1\u4e2d\u5e38\u7528<\/p>\n<\/li>\n<li>\n<p>\u5b9e\u73b0\u53cd\u5411\u63a7\u5236, \u901a\u8fc7\u8986\u76d6\u94a9\u5b50\u65b9\u6cd5\u6765\u51b3\u5b9a\u662f\u5426\u6267\u884c\u7279\u5b9a\u6b65\u9aa4<\/p>\n<\/li>\n<li>\n<p>\u7b26\u5408\u5f00\u95ed\u539f\u5219<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li>\u9700\u8981\u4e3a\u6bcf\u4e2a\u57fa\u672c\u65b9\u6cd5\u7684\u4e0d\u540c\u5b9e\u73b0\u63d0\u4f9b\u5b50\u7c7b, \u5982\u679c\u7236\u7c7b\u53ef\u53d8\u7684\u57fa\u672c\u65b9\u6cd5\u592a\u591a, \u5219\u4f1a\u5bfc\u81f4\u7c7b\u7684\u4e2a\u6570\u589e\u52a0. <strong>\u6b64\u65f6\u53ef\u4ee5\u7ed3\u5408\u6865\u63a5\u6a21\u5f0f<\/strong><\/li>\n<li>\u7b97\u6cd5\u9aa8\u67b6\u4e0d\u5bb9\u6613\u5347\u7ea7<\/li>\n<\/ul>\n<p><strong>\u9002\u7528\u73af\u5883<\/strong><\/p>\n<ul>\n<li>\u5bf9\u590d\u6742\u7684\u7b97\u6cd5\u8fdb\u884c\u5206\u5272, \u5c06\u4e0d\u53d8\u7684\u90e8\u5206\u8bbe\u8ba1\u4e3a\u6a21\u677f\u65b9\u6cd5\u548c\u7236\u7c7b\u5177\u4f53\u65b9\u6cd5, \u53ef\u4ee5\u6539\u53d8\u7684\u7ec6\u8282\u4ea4\u7ed9\u5b50\u7c7b.<\/li>\n<li>\u9700\u8981\u901a\u8fc7\u5b50\u7c7b\u6765\u51b3\u5b9a\u7236\u7c7b\u7b97\u6cd5\u67d0\u4e2a\u6b65\u9aa4\u662f\u5426\u6267\u884c, \u5b9e\u73b0\u53cd\u5411\u63a7\u5236.<\/li>\n<\/ul>\n<p>\u6a21\u677f\u65b9\u6cd5\u7684\u672c\u8d28: <strong>\u56fa\u5b9a\u7b97\u6cd5\u9aa8\u67b6<\/strong><\/p>\n<p><strong>\u6a21\u677f\u65b9\u6cd5\u5f88\u597d\u7684\u4f53\u73b0\u4e86\u5f00\u95ed\u539f\u5219\u548c\u91cc\u6c0f\u66ff\u6362\u539f\u5219<\/strong><\/p>\n<h3>\u6a21\u5f0f\u6269\u5c55<\/h3>\n<p><strong>\u597d\u83b1\u575e\u539f\u5219<\/strong><\/p>\n<p>\u5728\u6a21\u677f\u65b9\u6cd5\u6a21\u5f0f\u4e2d, \u5b50\u7c7b\u4e0d\u663e\u5f0f\u8c03\u7528\u7236\u7c7b\u65b9\u6cd5, \u800c\u662f\u901a\u8fc7\u8986\u76d6\u7236\u7c7b\u65b9\u6cd5\u6765\u5b9e\u73b0\u5177\u4f53\u4e1a\u52a1\u903b\u8f91. \u7236\u7c7b\u6765\u8c03\u7528\u5b50\u7c7b. \u8fd9\u79cd\u673a\u5236\u53eb\u597d\u83b1\u575e\u539f\u5219<\/p>\n<p><strong>\u94a9\u5b50\u65b9\u6cd5<\/strong><\/p>\n<p>\u94a9\u5b50\u65b9\u6cd5\u4f7f\u5f97\u5b50\u7c7b\u53ef\u4ee5\u63a7\u5236\u7236\u7c7b\u7684\u884c\u4e3a<\/p>\n<p><strong>\u6a21\u677f\u65b9\u6cd5\u6a21\u5f0f\u548c\u7b56\u7565\u6a21\u5f0f<\/strong><\/p>\n<p>\u6a21\u677f\u65b9\u6cd5\u5c01\u88c5\u7b97\u6cd5\u7684\u9aa8\u67b6, \u8fd9\u4e2a\u9aa8\u67b6\u662f\u9759\u6001\u7684, \u53d8\u5316\u7684\u662f\u7b97\u6cd5\u4e2d\u5177\u4f53\u6b65\u9aa4\u7684\u5b9e\u73b0.<\/p>\n<p>\u7b56\u7565\u6a21\u5f0f\u5c06\u5177\u4f53\u5b9e\u73b0\u5c01\u88c5\u8d77\u6765, \u6240\u6709\u5c01\u88c5\u5bf9\u8c61\u7b49\u7ea7\u554a, \u53ef\u4ee5\u76f8\u4e92\u66ff\u6362.<\/p>\n<p>\u53ef\u4ee5\u5728\u6a21\u677f\u65b9\u6cd5\u4e2d\u8c03\u7528\u7b56\u7565\u6a21\u5f0f, \u5373, \u5728\u53d8\u5316\u7684\u7b97\u6cd5\u6b65\u9aa4\u901a\u8fc7\u7b56\u7565\u6a21\u5f0f\u5b9e\u73b0<\/p>\n<p>\u4e5f\u53ef\u4ee5\u5728\u7b56\u7565\u6a21\u5f0f\u4f7f\u7528\u6a21\u677f\u65b9\u6cd5<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8bbe\u8ba1\u6a21\u5f0f\u6982\u8ff0 \u8bbe\u8ba1\u6a21\u5f0f\u662f\u4e00\u5957\u88ab\u53cd\u590d\u4f7f\u7528\u3001\u591a\u6570\u4eba\u77e5\u6653\u7684\u3001\u7ecf\u8fc7\u5206\u7c7b\u7f16\u76ee\u7684\u3001\u4ee3\u7801\u8bbe\u8ba1\u7ecf [&#8230;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[],"class_list":["post-761","post","type-post","status-publish","format-standard","hentry","category-30"],"_links":{"self":[{"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/posts\/761","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=761"}],"version-history":[{"count":2,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/posts\/761\/revisions"}],"predecessor-version":[{"id":763,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/posts\/761\/revisions\/763"}],"wp:attachment":[{"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=761"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=761"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}