![](\"https:\/\/pic.vanforever.com.cn\/Vanforever\/20240325\/sprout-3840x2160-green-25870.jpeg\")
<\/div><\/div><\/div>\n<\/p>\n
\u4e00\u3001\u8bbe\u8ba1\u6a21\u5f0f\u7684\u6765\u6e90<\/h2>\n
\u8bbe\u8ba1\u6a21\u5f0f\uff08Design Pattern\uff09\u662f\u524d\u8f88\u4eec\u5bf9\u4ee3\u7801\u5f00\u53d1\u7ecf\u9a8c\u7684\u603b\u7ed3\uff0c\u662f\u89e3\u51b3\u7279\u5b9a\u95ee\u9898\u7684\u4e00\u7cfb\u5217\u5957\u8def\u3002\u5b83\u4e0d\u662f\u8bed\u6cd5\u89c4\u5b9a\uff0c\u800c\u662f\u4e00\u5957\u7528\u6765\u63d0\u9ad8\u4ee3\u7801\u53ef\u590d\u7528\u6027\u3001\u53ef\u7ef4\u62a4\u6027\u3001\u53ef\u8bfb\u6027\u3001\u7a33\u5065\u6027\u4ee5\u53ca\u5b89\u5168\u6027\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n
1995 \u5e74\uff0cGoF\uff08Gang of Four\uff0c\u56db\u4eba\u7ec4\/\u56db\u4eba\u5e2e\uff09\u5408\u4f5c\u51fa\u7248\u4e86\u300a\u8bbe\u8ba1\u6a21\u5f0f\uff1a\u53ef\u590d\u7528\u9762\u5411\u5bf9\u8c61\u8f6f\u4ef6\u7684\u57fa\u7840\u300b\u4e00\u4e66\uff0c\u5171\u6536\u5f55\u4e86 23 \u79cd\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u4ece\u6b64\u6811\u7acb\u4e86\u8f6f\u4ef6\u8bbe\u8ba1\u6a21\u5f0f\u9886\u57df\u7684\u91cc\u7a0b\u7891\uff0c\u4eba\u79f0\u300cGoF\u8bbe\u8ba1\u6a21\u5f0f\u300d\u3002<\/p>\n
\u4e8c\u3001\u8bbe\u8ba1\u6a21\u5f0f\u7684\u516d\u5927\u539f\u5219\uff08SOLID\uff09<\/h2>\n
\u603b\u539f\u5219\u2014\u2014\u5f00\u95ed\u539f\u5219\uff08Open Closed Principle\uff09<\/strong><\/p>\n \u4e00\u4e2a\u8f6f\u4ef6\u5b9e\u4f53\uff0c\u5982\u7c7b\u3001\u6a21\u5757\u548c\u51fd\u6570\u5e94\u8be5\u5bf9\u6269\u5c55\u5f00\u653e\uff0c\u5bf9\u4fee\u6539\u5173\u95ed<\/strong>\u3002<\/p>\n<\/blockquote>\n \u5728\u7a0b\u5e8f\u9700\u8981\u8fdb\u884c\u62d3\u5c55\u7684\u65f6\u5019\uff0c\u4e0d\u80fd\u53bb\u4fee\u6539\u539f\u6709\u7684\u4ee3\u7801\uff0c\u800c\u662f\u8981\u6269\u5c55\u539f\u6709\u4ee3\u7801\uff0c\u5b9e\u73b0\u4e00\u4e2a\u70ed\u63d2\u62d4\u7684\u6548\u679c\u3002\u6240\u4ee5\u4e00\u53e5\u8bdd\u6982\u62ec\u5c31\u662f\uff1a\u4e3a\u4e86\u4f7f\u7a0b\u5e8f\u7684\u6269\u5c55\u6027\u597d\uff0c\u6613\u4e8e\u7ef4\u62a4\u548c\u5347\u7ea7\u3002<\/p>\n \u60f3\u8981\u8fbe\u5230\u8fd9\u6837\u7684\u6548\u679c\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u63a5\u53e3\u548c\u62bd\u8c61\u7c7b\u7b49\u3002<\/p>\n 1\u3001\u5355\u4e00\u804c\u8d23\u539f\u5219\uff08Single Responsibility Principle\uff09<\/strong><\/p>\n \u4e00\u4e2a\u7c7b\u5e94\u8be5\u53ea\u6709\u4e00\u4e2a\u53d1\u751f\u53d8\u5316\u7684\u539f\u56e0\u3002<\/p>\n<\/blockquote>\n \u4e0d\u8981\u5b58\u5728\u591a\u4e8e\u4e00\u4e2a\u5bfc\u81f4\u7c7b\u53d8\u66f4\u7684\u539f\u56e0\uff0c\u4e5f\u5c31\u662f\u8bf4\u6bcf\u4e2a\u7c7b\u5e94\u8be5\u5b9e\u73b0\u5355\u4e00\u7684\u804c\u8d23\uff0c\u5426\u5219\u5c31\u5e94\u8be5\u628a\u7c7b\u62c6\u5206\u3002<\/p>\n 2\u3001\u91cc\u6c0f\u66ff\u6362\u539f\u5219\uff08Liskov Substitution Principle\uff09<\/strong><\/p>\n \u6240\u6709\u5f15\u7528\u57fa\u7c7b\u7684\u5730\u65b9\u5fc5\u987b\u80fd\u900f\u660e\u5730\u4f7f\u7528\u5176\u5b50\u7c7b\u7684\u5bf9\u8c61\u3002<\/p>\n<\/blockquote>\n \u4efb\u4f55\u57fa\u7c7b\u53ef\u4ee5\u51fa\u73b0\u7684\u5730\u65b9\uff0c\u5b50\u7c7b\u4e00\u5b9a\u53ef\u4ee5\u51fa\u73b0\u3002\u91cc\u6c0f\u66ff\u6362\u539f\u5219\u662f\u7ee7\u627f\u590d\u7528\u7684\u57fa\u77f3\uff0c\u53ea\u6709\u5f53\u884d\u751f\u7c7b\u53ef\u4ee5\u66ff\u6362\u57fa\u7c7b\uff0c\u8f6f\u4ef6\u5355\u4f4d\u7684\u529f\u80fd\u4e0d\u53d7\u5230\u5f71\u54cd\u65f6\uff0c\u57fa\u7c7b\u624d\u80fd\u771f\u6b63\u88ab\u590d\u7528\uff0c\u800c\u884d\u751f\u7c7b\u4e5f\u80fd\u591f\u5728\u57fa\u7c7b\u7684\u57fa\u7840\u4e0a\u589e\u52a0\u65b0\u7684\u884c\u4e3a\u3002<\/p>\n \u91cc\u6c0f\u4ee3\u6362\u539f\u5219\u662f\u5bf9\u201c\u5f00-\u95ed\u201d\u539f\u5219\u7684\u8865\u5145\u3002\u5b9e\u73b0\u201c\u5f00\u95ed\u201d\u539f\u5219\u7684\u5173\u952e\u6b65\u9aa4\u5c31\u662f\u62bd\u8c61\u5316\u3002\u800c\u57fa\u7c7b\u4e0e\u5b50\u7c7b\u7684\u7ee7\u627f\u5173\u7cfb\u5c31\u662f\u62bd\u8c61\u5316\u7684\u5177\u4f53\u5b9e\u73b0\uff0c\u6240\u4ee5\u91cc\u6c0f\u66ff\u6362\u539f\u5219\u662f\u5bf9\u5b9e\u73b0\u62bd\u8c61\u5316\u7684\u5177\u4f53\u6b65\u9aa4\u7684\u89c4\u8303\u3002\u91cc\u6c0f\u66ff\u6362\u539f\u5219\u4e2d\uff0c\u5b50\u7c7b\u5bf9\u7236\u7c7b\u7684\u65b9\u6cd5\u5c3d\u91cf\u4e0d\u8981\u91cd\u5199\u548c\u91cd\u8f7d<\/strong>\u3002\u56e0\u4e3a\u7236\u7c7b\u4ee3\u8868\u4e86\u5b9a\u4e49\u597d\u7684\u7ed3\u6784\uff0c\u901a\u8fc7\u8fd9\u4e2a\u89c4\u8303\u7684\u63a5\u53e3\u4e0e\u5916\u754c\u4ea4\u4e92\uff0c\u5b50\u7c7b\u4e0d\u5e94\u8be5\u968f\u4fbf\u7834\u574f\u5b83\u3002<\/p>\n 3\u3001\u4f9d\u8d56\u5012\u7f6e\u539f\u5219\uff08Dependence Inversion Principle\uff09<\/strong><\/p>\n 1\u3001\u4e0a\u5c42\u6a21\u5757\u4e0d\u5e94\u8be5\u4f9d\u8d56\u5e95\u5c42\u6a21\u5757\uff0c\u5b83\u4eec\u90fd\u5e94\u8be5\u4f9d\u8d56\u4e8e\u62bd\u8c61\u3002 \u9762\u5411\u63a5\u53e3\u7f16\u7a0b\uff0c\u4f9d\u8d56\u4e8e\u62bd\u8c61\u800c\u4e0d\u4f9d\u8d56\u4e8e\u5177\u4f53\u3002\u5199\u4ee3\u7801\u65f6\u7528\u5230\u5177\u4f53\u7c7b\u65f6\uff0c\u4e0d\u4e0e\u5177\u4f53\u7c7b\u4ea4\u4e92\uff0c\u800c\u4e0e\u5177\u4f53\u7c7b\u7684\u4e0a\u5c42\u63a5\u53e3\u4ea4\u4e92\u3002<\/p>\n 4\u3001\u63a5\u53e3\u9694\u79bb\u539f\u5219\uff08Interface Segregation Principle\uff09<\/strong><\/p>\n 1\u3001\u5ba2\u6237\u7aef\u4e0d\u5e94\u8be5\u4f9d\u8d56\u5b83\u4e0d\u9700\u8981\u7684\u63a5\u53e3\u3002 \u6bcf\u4e2a\u63a5\u53e3\u4e2d\u4e0d\u5b58\u5728\u5b50\u7c7b\u7528\u4e0d\u5230\u5374\u5fc5\u987b\u5b9e\u73b0\u7684\u65b9\u6cd5\uff0c\u5982\u679c\u4e0d\u7136\uff0c\u5c31\u8981\u5c06\u63a5\u53e3\u62c6\u5206\u3002\u4f7f\u7528\u591a\u4e2a\u9694\u79bb\u7684\u63a5\u53e3\uff0c\u6bd4\u4f7f\u7528\u5355\u4e2a\u63a5\u53e3\uff08\u591a\u4e2a\u63a5\u53e3\u65b9\u6cd5\u96c6\u5408\u5230\u4e00\u4e2a\u7684\u63a5\u53e3\uff09\u8981\u597d\u3002<\/p>\n 5\u3001\u8fea\u7c73\u7279\u6cd5\u5219\uff08\u6700\u5c11\u77e5\u9053\u539f\u5219\uff09(Law of Demeter)<\/strong><\/p>\n \u53ea\u4e0e\u4f60\u7684\u76f4\u63a5\u670b\u53cb\u4ea4\u8c08\uff0c\u4e0d\u8ddf\u201c\u964c\u751f\u4eba\u201d\u8bf4\u8bdd\u3002<\/p>\n<\/blockquote>\n \u4e00\u4e2a\u7c7b\u5bf9\u81ea\u5df1\u4f9d\u8d56\u7684\u7c7b\u77e5\u9053\u7684\u8d8a\u5c11\u8d8a\u597d\u3002\u65e0\u8bba\u88ab\u4f9d\u8d56\u7684\u7c7b\u591a\u4e48\u590d\u6742\uff0c\u90fd\u5e94\u8be5\u5c06\u903b\u8f91\u5c01\u88c5\u5728\u65b9\u6cd5\u7684\u5185\u90e8\uff0c\u901a\u8fc7public\u65b9\u6cd5\u63d0\u4f9b\u7ed9\u5916\u90e8\u3002\u8fd9\u6837\u5f53\u88ab\u4f9d\u8d56\u7684\u7c7b\u53d8\u5316\u65f6\uff0c\u624d\u80fd\u6700\u5c0f\u7684\u5f71\u54cd\u8be5\u7c7b\u3002<\/p>\n \u6700\u5c11\u77e5\u9053\u539f\u5219\u7684\u53e6\u4e00\u4e2a\u8868\u8fbe\u65b9\u5f0f\u662f\uff1a\u53ea\u4e0e\u76f4\u63a5\u7684\u670b\u53cb\u901a\u4fe1\u3002\u7c7b\u4e4b\u95f4\u53ea\u8981\u6709\u8026\u5408\u5173\u7cfb\uff0c\u5c31\u53eb\u670b\u53cb\u5173\u7cfb\u3002\u8026\u5408\u5206\u4e3a\u4f9d\u8d56\u3001\u5173\u8054\u3001\u805a\u5408\u3001\u7ec4\u5408\u7b49\u3002\u6211\u4eec\u79f0\u51fa\u73b0\u4e3a\u6210\u5458\u53d8\u91cf\u3001\u65b9\u6cd5\u53c2\u6570\u3001\u65b9\u6cd5\u8fd4\u56de\u503c\u4e2d\u7684\u7c7b\u4e3a\u76f4\u63a5\u670b\u53cb\u3002\u5c40\u90e8\u53d8\u91cf\u3001\u4e34\u65f6\u53d8\u91cf\u5219\u4e0d\u662f\u76f4\u63a5\u7684\u670b\u53cb\u3002\u6211\u4eec\u8981\u6c42\u964c\u751f\u7684\u7c7b\u4e0d\u8981\u4f5c\u4e3a\u5c40\u90e8\u53d8\u91cf\u51fa\u73b0\u5728\u7c7b\u4e2d\u3002<\/p>\n 6\u3001\u5408\u6210\u590d\u7528\u539f\u5219\uff08Composite Reuse Principle\uff09<\/strong><\/p>\n \u5c3d\u91cf\u4f7f\u7528\u5bf9\u8c61\u7ec4\u5408\/\u805a\u5408\uff0c\u800c\u4e0d\u662f\u7ee7\u627f\u5173\u7cfb\u8fbe\u5230\u8f6f\u4ef6\u590d\u7528\u7684\u76ee\u7684\u3002<\/p>\n<\/blockquote>\n \u5408\u6210\u6216\u805a\u5408\u53ef\u4ee5\u5c06\u5df2\u6709\u5bf9\u8c61\u7eb3\u5165\u5230\u65b0\u5bf9\u8c61\u4e2d\uff0c\u4f7f\u4e4b\u6210\u4e3a\u65b0\u5bf9\u8c61\u7684\u4e00\u90e8\u5206\uff0c\u56e0\u6b64\u65b0\u5bf9\u8c61\u53ef\u4ee5\u8c03\u7528\u5df2\u6709\u5bf9\u8c61\u7684\u529f\u80fd\u3002<\/p>\n \u521b\u5efa\u578b\u6a21\u5f0f\uff08Creational Pattern\uff09\uff1a<\/strong>\u5bf9\u7c7b\u7684\u5b9e\u4f8b\u5316\u8fc7\u7a0b\u8fdb\u884c\u4e86\u62bd\u8c61\uff0c\u80fd\u591f\u5c06\u8f6f\u4ef6\u6a21\u5757\u4e2d\u5bf9\u8c61\u7684\u521b\u5efa<\/strong>\u548c\u5bf9\u8c61\u7684\u4f7f\u7528\u5206\u79bb\u3002<\/p>\n \uff085\u79cd\uff09\u5de5\u5382\u6a21\u5f0f\u3001\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\u3001\u5355\u4f8b\u6a21\u5f0f\u3001\u5efa\u9020\u8005\u6a21\u5f0f\u3001\u539f\u578b\u6a21\u5f0f<\/p>\n \u7ed3\u6784\u578b\u6a21\u5f0f\uff08Structural Pattern\uff09<\/strong>\uff1a\u5173\u6ce8\u4e8e\u5bf9\u8c61\u7684\u7ec4\u6210\u4ee5\u53ca\u5bf9\u8c61\u4e4b\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb\uff0c\u63cf\u8ff0\u5982\u4f55\u5c06\u7c7b\u6216\u8005\u5bf9\u8c61\u7ed3\u5408\u5728\u4e00\u8d77\u5f62\u6210\u66f4\u5927\u7684\u7ed3\u6784\uff0c\u5c31\u50cf\u642d\u79ef\u6728<\/strong>\uff0c\u53ef\u4ee5\u901a\u8fc7\u7b80\u5355\u79ef\u6728\u7684\u7ec4\u5408\u5f62\u6210\u590d\u6742\u7684\u3001\u529f\u80fd\u66f4\u4e3a\u5f3a\u5927\u7684\u7ed3\u6784\u3002<\/p>\n \uff087\u79cd\uff09\u9002\u914d\u5668\u6a21\u5f0f\u3001\u88c5\u9970\u8005\u6a21\u5f0f\u3001\u4ee3\u7406\u6a21\u5f0f\u3001\u5916\u89c2\u6a21\u5f0f\u3001\u6865\u63a5\u6a21\u5f0f\u3001\u7ec4\u5408\u6a21\u5f0f\u3001\u4eab\u5143\u6a21\u5f0f<\/p>\n \u884c\u4e3a\u578b\u6a21\u5f0f\uff08Behavioral Pattern\uff09<\/strong>\uff1a\u5173\u6ce8\u4e8e\u5bf9\u8c61\u7684\u884c\u4e3a\u95ee\u9898\uff0c\u662f\u5bf9\u5728\u4e0d\u540c\u7684\u5bf9\u8c61\u4e4b\u95f4\u5212\u5206\u8d23\u4efb\u548c\u7b97\u6cd5\u7684\u62bd\u8c61\u5316\uff1b\u4e0d\u4ec5\u4ec5\u5173\u6ce8\u7c7b\u548c\u5bf9\u8c61\u7684\u7ed3\u6784\uff0c\u800c\u4e14\u91cd\u70b9\u5173\u6ce8\u5b83\u4eec\u4e4b\u95f4\u7684\u76f8\u4e92\u4f5c\u7528<\/strong>\u3002<\/p>\n \uff0811\u79cd\uff09\u7b56\u7565\u6a21\u5f0f\u3001\u6a21\u677f\u65b9\u6cd5\u6a21\u5f0f\u3001\u89c2\u5bdf\u8005\u6a21\u5f0f\u3001\u8fed\u4ee3\u5668\u6a21\u5f0f\u3001\u8d23\u4efb\u94fe\u6a21\u5f0f\u3001\u547d\u4ee4\u6a21\u5f0f\u3001\u5907\u5fd8\u5f55\u6a21\u5f0f\u3001\u72b6\u6001\u6a21\u5f0f\u3001\u8bbf\u95ee\u8005\u6a21\u5f0f\u3001\u4e2d\u4ecb\u8005\u6a21\u5f0f\u3001\u89e3\u91ca\u5668\u6a21\u5f0f<\/p>\n \u5de5\u5382\u6a21\u5f0f\uff08Factory Pattern\uff09\u662fJava\u4e2d\u6700\u5e38\u7528\u7684\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u4e00\u3002<\/p>\n \u5728\u5de5\u5382\u6a21\u5f0f\u4e2d\uff0c\u6211\u4eec\u5728\u521b\u5efa\u5bf9\u8c61\u65f6\u4e0d\u4f1a\u5bf9\u5ba2\u6237\u7aef\u66b4\u9732\u521b\u5efa\u903b\u8f91\uff0c\u5e76\u4e14\u662f\u901a\u8fc7\u4f7f\u7528\u4e00\u4e2a\u5171\u540c\u7684\u63a5\u53e3\u6765\u6307\u5411\u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u3002<\/p>\n \u5b9a\u4e49\u4e00\u4e2a\u521b\u5efa\u5bf9\u8c61\u7684\u63a5\u53e3\uff0c\u8ba9\u5176\u5b50\u7c7b\u81ea\u5df1\u51b3\u5b9a\u5b9e\u4f8b\u5316\u54ea\u4e00\u4e2a\u5de5\u5382\u7c7b\uff0c\u5de5\u5382\u6a21\u5f0f\u4f7f\u5176\u521b\u5efa\u8fc7\u7a0b\u5ef6\u8fdf\u5230\u5b50\u7c7b\u8fdb\u884c\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a\u6bd4\u5982\u6211\u4eec\u5199\u4e86\u4e00\u4e2a\u602a\u7269\u7c7b\uff0c\u4ed6\u7684\u5b50\u7c7b\u6709\u673a\u68b0\u7c7b\u602a\u7269\uff0c\u4ea1\u7075\u7c7b\u602a\u7269\u7b49\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528new+\u5177\u4f53\u7c7b\u602a\u7269\u7684\u540d\u6765\u521b\u5efa\u5bf9\u8c61\u3002\u5982\u679c\u4ece\u7528\u6237\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u8fd9\u662f\u6bd4\u8f83\u9ebb\u70e6\u7684\uff0c\u56e0\u4e3a\u7528\u6237\u9700\u8981\u8bb0\u4f4f\u591a\u4e2a\u7c7b\u7684\u7c7b\u540d\u3002<\/p>\n \u628a\u5bf9\u8c61\u7684\u521b\u5efa\u5c01\u88c5\u5728\u4e00\u4e2a\u63a5\u53e3\u51fd\u6570\u91cc\uff0c\u901a\u8fc7\u4f20\u5165\u4e0d\u540c\u7684\u6807\u8bc6\uff0c\u8fd4\u56de\u521b\u5efa\u7684\u5bf9\u8c61\u3002\u5ba2\u6237\u4e0d\u7528\u81ea\u5df1new\u5bf9\u8c61\uff0c\u5c31\u4e0d\u7528\u4e86\u89e3\u5bf9\u8c61\u5177\u4f53\u7684\u7c7b\u540d\u3002<\/p>\n \u4f46\u5f53\u6211\u9700\u8981\u65b0\u5efa\u4e00\u4e2a\u602a\u7269\u7c7b\uff0c\u5c31\u8981\u5728\u521b\u5efa\u5bf9\u8c61\u7684\u51fd\u6570\u91cc\u65b0\u589e\u4e00\u4e2a\u521b\u5efa\u65b9\u6cd5\u3002\u4f46\u662f\u6211\u4eec\u589e\u52a0\u65b0\u529f\u80fd\u7684\u65f6\u5019\uff0c\u4e0d\u5e94\u8be5\u901a\u8fc7\u4fee\u6539\u5df2\u7ecf\u5b58\u5728\u7684\u4ee3\u7801\uff0c\u800c\u662f\u76f4\u63a5\u589e\u52a0\u65b0\u529f\u80fd\u3002<\/p>\n<\/blockquote>\n <\/p>\n \u5de5\u5382\u65b9\u6cd5<\/strong><\/p>\n \u5de5\u5382\u65b9\u6cd5\uff1a\u4e0e\u7b80\u5355\u5de5\u5382\u76f8\u6bd4\uff0c\u7075\u6d3b\u6027\u66f4\u5f3a\uff0c\u4e5f\u66f4\u590d\u6742\uff0c\u5148\u63d0\u4f9b\u4e00\u4e2a\u521b\u5efa\u4ea7\u54c1\u7684\u7eaf\u865a\u51fd\u6570\u7684\u7c7b\uff0c\u7136\u540e\u4e3a\u6bcf\u4e2a\u602a\u7269\u7c7b\u521b\u5efa\u4e00\u4e2a\u6d3e\u751f\u7c7b\u602a\u7269\u5de5\u5382\u7c7b\u3002<\/p>\n \u5b9e\u73b0\u4e86\u63a5\u53e3\u51fd\u6570\u95ed\u5408\uff0c\u521b\u5efa\u7c7b\u65f6\u591a\u5199\u4e00\u4e2a\u7c7b\u5c31\u884c\u4e86\u3002\u7f3a\u70b9\uff1a\u5f88\u591a\u4ea7\u54c1\u662f\u6709\u5173\u8054\u7684\uff0c\u5982\u679c\u4e3a\u6bcf\u4e2a\u7c7b\u90fd\u5199\u4e00\u4e2a\u5de5\u5382\u7c7b\uff0c\u4f1a\u9020\u6210\u5de5\u5382\u7c7b\u592a\u591a\uff0c\u4e0d\u597d\u7ef4\u62a4\u3002<\/p>\n <\/p>\n \u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\uff08Abstract Factory Pattern\uff09\u662f\u56f4\u7ed5\u4e00\u4e2a\u8d85\u7ea7\u5de5\u5382\u521b\u5efa\u5176\u4ed6\u5de5\u5382\u3002\u8be5\u8d85\u7ea7\u5de5\u5382\u53c8\u79f0\u4e3a\u5176\u4ed6\u5de5\u5382\u7684\u5de5\u5382\u3002<\/p>\n \u5728\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\u4e2d\uff0c\u63a5\u53e3\u662f\u8d1f\u8d23\u521b\u5efa\u4e00\u4e2a\u76f8\u5173\u5bf9\u8c61\u7684\u5de5\u5382\uff0c\u4e0d\u9700\u8981\u663e\u5f0f\u6307\u5b9a\u5b83\u4eec\u7684\u7c7b\u3002\u6bcf\u4e2a\u751f\u6210\u7684\u5de5\u5382\u90fd\u80fd\u6309\u7167\u5de5\u5382\u6a21\u5f0f\u63d0\u4f9b\u5bf9\u8c61\u3002<\/p>\n \u63d0\u4f9b\u4e00\u4e2a\u521b\u5efa\u4e00\u7cfb\u5217\u76f8\u5173\u6216\u76f8\u4e92\u4f9d\u8d56\u5bf9\u8c61\u7684\u63a5\u53e3\uff0c\u800c\u65e0\u9700\u6307\u5b9a\u5b83\u4eec\u5177\u4f53\u7684\u7c7b\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a\u5bf9\u4e8e\u4e00\u4e2a\u5bb6\u5ead\u6765\u8bf4\uff0c\u53ef\u80fd\u6709\u5546\u52a1\u5973\u88c5\u3001\u5546\u52a1\u7537\u88c5\u3001\u65f6\u5c1a\u5973\u88c5\u3001\u65f6\u5c1a\u7537\u88c5\uff0c\u90fd\u662f\u6210\u5957\u7684\uff0c\u5373\u4e00\u7cfb\u5217\u5177\u4f53\u4ea7\u54c1\u3002\u5047\u8bbe\u4e00\u79cd\u60c5\u51b5\uff0c\u5728\u60a8\u7684\u5bb6\u4e2d\uff0c\u67d0\u4e00\u4e2a\u8863\u67dc\uff08\u5177\u4f53\u5de5\u5382\uff09\u53ea\u80fd\u5b58\u653e\u67d0\u4e00\u79cd\u8fd9\u6837\u7684\u8863\u670d\uff08\u6210\u5957\uff0c\u4e00\u7cfb\u5217\u5177\u4f53\u4ea7\u54c1\uff09\uff0c\u6bcf\u6b21\u62ff\u8fd9\u79cd\u6210\u5957\u7684\u8863\u670d\u65f6\u4e5f\u81ea\u7136\u8981\u4ece\u8fd9\u4e2a\u8863\u67dc\u4e2d\u53d6\u51fa\u4e86\u3002\u7528 OO \u7684\u601d\u60f3\u53bb\u7406\u89e3\uff0c\u6240\u6709\u7684\u8863\u67dc\uff08\u5177\u4f53\u5de5\u5382\uff09\u90fd\u662f\u8863\u67dc\u7c7b\u7684\uff08\u62bd\u8c61\u5de5\u5382\uff09\u67d0\u4e00\u4e2a\uff0c\u800c\u6bcf\u4e00\u4ef6\u6210\u5957\u7684\u8863\u670d\u53c8\u5305\u62ec\u5177\u4f53\u7684\u4e0a\u8863\uff08\u67d0\u4e00\u5177\u4f53\u4ea7\u54c1\uff09\uff0c\u88e4\u5b50\uff08\u67d0\u4e00\u5177\u4f53\u4ea7\u54c1\uff09\uff0c\u8fd9\u4e9b\u5177\u4f53\u7684\u4e0a\u8863\u5176\u5b9e\u4e5f\u90fd\u662f\u4e0a\u8863\uff08\u62bd\u8c61\u4ea7\u54c1\uff09\uff0c\u5177\u4f53\u7684\u88e4\u5b50\u4e5f\u90fd\u662f\u88e4\u5b50\uff08\u53e6\u4e00\u4e2a\u62bd\u8c61\u4ea7\u54c1\uff09\u3002<\/p>\n \u6bd4\u5982\u6e38\u620f\u4e2d\u7684\u602a\u7269\u79cd\u7c7b\u6bd4\u8f83\u56fa\u5b9a\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u6240\u6709\u602a\u7269\u7684\u5de5\u5382\u6574\u5408\u5230\u4e00\u8d77\uff0c\u5728\u57fa\u7c7b\u62bd\u8c61\u5de5\u5382\u91cc\u9762\u521b\u5efa\u6240\u6709\u602a\u7269\u79cd\u7c7b\u7684\u7eaf\u865a\u51fd\u6570\uff0c\u518d\u7ee7\u627f\u8fd9\u4e2a\u62bd\u8c61\u5de5\u5382\u91cd\u5199\u865a\u51fd\u6570\u5373\u53ef\u3002<\/p>\n \u8fd9\u79cd\u65b9\u6cd5\u4e5f\u66f4\u9002\u5408\u4e0d\u540c\u573a\u666f\uff0c\u4f46\u602a\u7269\u79cd\u7c7b\u662f\u56fa\u5b9a\u7684\u60c5\u666f\uff0c\u6bd4\u5982\u706b\u5c71\u573a\u666f\u548c\u6cbc\u6cfd\u573a\u666f\uff0c\u602a\u7269\u7684\u79cd\u7c7b\u662f\u76f8\u540c\u7684\uff0c\u53ea\u662f\u8840\u91cf\uff0c\u76ae\u80a4\u8fd9\u4e9b\u6570\u636e\u4e0d\u540c\uff0c\u5c31\u53ef\u4ee5\u901a\u8fc7\u62bd\u8c61\u5de5\u5382\uff0c\u521b\u5efa\u4e0d\u540c\u573a\u666f\u7684\u5de5\u5382\u3002\u7f3a\u70b9\u662f\u9002\u5408\u602a\u7269\u79cd\u7c7b\u6bd4\u8f83\u56fa\u5b9a\u7684\u60c5\u51b5\uff0c\u65b0\u589e\u602a\u7269\u7684\u8bdd\uff0c\u8fd8\u662f\u4f1a\u4fee\u6539\u6e90\u7801\u3002<\/p>\n<\/blockquote>\n <\/p>\n <\/p>\n \u5355\u4f8b\u6a21\u5f0f\uff08Singleton Pattern\uff09\u662fJava\u4e2d\u6700\u7b80\u5355\u7684\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u4e00\u3002<\/p>\n \u8fd9\u79cd\u6a21\u5f0f\u6d89\u53ca\u5230\u4e00\u4e2a\u5355\u4e00\u7684\u7c7b\uff0c\u8be5\u7c7b\u8d1f\u8d23\u521b\u5efa\u81ea\u5df1\u7684\u5bf9\u8c61\uff0c\u540c\u65f6\u786e\u4fdd\u53ea\u6709\u5355\u4e2a\u5bf9\u8c61\u88ab\u521b\u5efa\u3002\u8fd9\u4e2a\u7c7b\u63d0\u4f9b\u4e86\u4e00\u79cd\u8bbf\u95ee\u5176\u552f\u4e00\u7684\u5bf9\u8c61\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee\uff0c\u4e0d\u9700\u8981\u5b9e\u4f8b\u5316\u8be5\u7c7b\u7684\u5bf9\u8c61\u3002<\/p>\n \u4fdd\u8bc1\u4e00\u4e2a\u7c7b\u4ec5\u6709\u4e00\u4e2a\u5b9e\u4f8b\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e2a\u8bbf\u95ee\u5b83\u7684\u5168\u5c40\u8bbf\u95ee\u70b9\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a\u4e00\u4e2a\u73ed\u7ea7\u53ea\u80fd\u6709\u4e00\u4e2a\u73ed\u4e3b\u4efb\u3002<\/p>\n<\/blockquote>\n <\/p>\n \u61d2\u6c49\u5f0f<\/strong><\/p>\n \u66b4\u529b\u4e0a\u9501<\/strong>\uff1a\u8fd9\u79cd\u65b9\u5f0f\u901a\u8fc7\u5728 \u9501\u52a0\u53cc\u91cd\u5224\u65ad<\/strong>\uff1a\u8fd9\u79cd\u65b9\u5f0f\u901a\u5e38\u88ab\u79f0\u4e3a\u201c\u53cc\u91cd\u68c0\u67e5\u9501\u201d\uff08double-checked locking\uff09\uff0c\u5b83\u5728\u52a0\u9501\u524d\u540e\u90fd\u8fdb\u884c\u4e86\u5355\u4f8b\u662f\u5426\u5df2\u521b\u5efa\u7684\u68c0\u67e5\u3002\u8fd9\u79cd\u65b9\u5f0f\u770b\u8d77\u6765\u5f88\u7f8e\u597d\uff0c\u56e0\u4e3a\u5b83\u8bd5\u56fe\u51cf\u5c11\u9501\u7684\u5f00\u9500\u3002\u4f46\u662f\uff0c\u8fd9\u79cd\u5b9e\u73b0\u65b9\u5f0f\u53ef\u80fd\u4f1a\u56e0\u4e3a\u7f16\u8bd1\u5668\u7684\u4f18\u5316\u800c\u5931\u6548\u3002\u5728C++11\u4e4b\u524d\uff0c\u7531\u4e8e\u5185\u5b58\u6a21\u578b\u7684\u9650\u5236\uff0c\u5373\u4f7f\u4f7f\u7528 Call Once<\/strong>\uff1aC++11\u5f15\u5165\u4e86 \u9759\u6001\u5c40\u90e8\u53d8\u91cf<\/strong>\uff1a\u5229\u7528C++11\u4e4b\u540e\u5bf9\u9759\u6001\u5c40\u90e8\u53d8\u91cf\u7684\u7ebf\u7a0b\u5b89\u5168\u521d\u59cb\u5316\u7279\u6027\u6765\u5b9e\u73b0\u5355\u4f8b\uff0c\u786e\u5b9e\u662f\u4e00\u79cd\u7b80\u5355\u4e14\u9ad8\u6548\u7684\u65b9\u5f0f\u3002C++11\u4fdd\u8bc1\u9759\u6001\u5c40\u90e8\u53d8\u91cf\u7684\u521d\u59cb\u5316\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002<\/p>\n <\/p>\n \u997f\u6c49\u5f0f<\/strong><\/p>\n \u997f\u6c49\u5f0f\u7684\u5b9e\u73b0\u901a\u8fc7\u9759\u6001\u53d8\u91cf\u7684\u521d\u59cb\u5316\uff0c\u786e\u5b9e\u53ef\u4ee5\u5728\u7a0b\u5e8f\u5f00\u59cb\u6267\u884c\u524d\u5c31\u521b\u5efa\u5355\u4f8b\u5b9e\u4f8b\uff0c\u4fdd\u8bc1\u4e86\u7ebf\u7a0b\u5b89\u5168\uff0c\u4f46\u4e5f\u5b58\u5728\u4e00\u4e9b\u7f3a\u70b9\uff0c\u5982\u679c\u8fd9\u4e2a\u5b9e\u4f8b\u5f88\u5927\uff0c\u6216\u8005\u5728\u7a0b\u5e8f\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u6839\u672c\u4e0d\u9700\u8981\u8fd9\u4e2a\u5b9e\u4f8b\uff0c\u90a3\u4e48\u8fd9\u79cd\u521d\u59cb\u5316\u65b9\u5f0f\u53ef\u80fd\u4f1a\u9020\u6210\u8d44\u6e90\u6d6a\u8d39\u3002<\/p>\n <\/p>\n \u5173\u4e8e\u5355\u4f8b\u6a21\u5f0f\u4e2d\u5bf9\u8c61\u7684\u56de\u6536\u95ee\u9898\uff0c\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5355\u4f8b\u5bf9\u8c61\u4f1a\u5728\u7a0b\u5e8f\u7ed3\u675f\u65f6\u7531\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u5b58\u7ba1\u7406\u5668\u81ea\u52a8\u56de\u6536\u3002\u4f46\u662f\uff0c\u5728\u67d0\u4e9b\u8bed\u8a00\u4e2d\uff0c\u5982C++\uff0c\u9700\u8981\u624b\u52a8\u7ba1\u7406\u5185\u5b58\u3002\u5982\u679c\u5355\u4f8b\u5bf9\u8c61\u662f\u901a\u8fc7 \u5728C++\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u9759\u6001\u7684 <\/p>\n <\/p>\n \u5efa\u9020\u8005\u6a21\u5f0f\uff08Builder Pattern\uff09\u4f7f\u7528\u591a\u4e2a\u7b80\u5355\u7684\u5bf9\u8c61\u4e00\u6b65\u4e00\u6b65\u6784\u5efa\u6210\u4e00\u4e2a\u590d\u6742\u7684\u5bf9\u8c61\u3002<\/p>\n \u4e00\u4e2aBuilder\u7c7b\u4f1a\u4e00\u6b65\u4e00\u6b65\u6784\u9020\u6700\u7ec8\u7684\u5bf9\u8c61\u3002\u8be5Builder\u7c7b\u662f\u72ec\u7acb\u4e8e\u5176\u4ed6\u5bf9\u8c61\u7684\u3002<\/p>\n \u5c06\u4e00\u4e2a\u590d\u6742\u7684\u6784\u5efa\u4e0e\u5176\u8868\u793a\u76f8\u5206\u79bb\uff0c\u4f7f\u5f97\u540c\u6837\u7684\u6784\u5efa\u8fc7\u7a0b\u53ef\u4ee5\u521b\u5efa\u4e0d\u540c\u7684\u8868\u793a\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u539f\u578b\u6a21\u5f0f\uff08Prototype Pattern\uff09\u662f\u7528\u4e8e\u521b\u5efa\u91cd\u590d\u7684\u5bf9\u8c61\uff0c\u540c\u65f6\u53c8\u80fd\u4fdd\u8bc1\u6027\u80fd\u3002<\/p>\n \u8fd9\u79cd\u6a21\u5f0f\u662f\u5b9e\u73b0\u4e86\u4e00\u4e2a\u539f\u578b\u63a5\u53e3\uff0c\u8be5\u63a5\u53e3\u7528\u4e8e\u521b\u5efa\u5f53\u524d\u5bf9\u8c61\u7684\u514b\u9686\u3002\u5f53\u76f4\u63a5\u521b\u5efa\u5bf9\u8c61\u7684\u4ee3\u4ef7\u6bd4\u8f83\u5927\u65f6\uff0c\u5219\u91c7\u7528\u8fd9\u79cd\u6a21\u5f0f\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a\u5bf9\u8c61\u9700\u8981\u5728\u4e00\u4e2a\u9ad8\u4ee3\u4ef7\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u4e4b\u540e\u88ab\u521b\u5efa\u3002\u6211\u4eec\u53ef\u4ee5\u7f13\u5b58\u8be5\u5bf9\u8c61\uff0c\u5728\u4e0b\u4e00\u4e2a\u8bf7\u6c42\u65f6\u8fd4\u56de\u5b83\u7684\u514b\u9686\uff0c\u5728\u9700\u8981\u7684\u65f6\u5019\u66f4\u65b0\u6570\u636e\u5e93\uff0c\u4ee5\u6b64\u6765\u51cf\u5c11\u6570\u636e\u5e93\u8c03\u7528\u3002<\/p>\n \u7528\u539f\u578b\u5b9e\u4f8b\u6307\u5b9a\u521b\u5efa\u5bf9\u8c61\u7684\u79cd\u7c7b\uff0c\u5e76\u4e14\u901a\u8fc7\u62f7\u8d1d\u8fd9\u4e9b\u539f\u578b\u521b\u5efa\u65b0\u7684\u5bf9\u8c61\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u9002\u914d\u5668\u6a21\u5f0f\uff08Adapter Pattern\uff09\u662f\u4f5c\u4e3a\u4e24\u4e2a\u4e0d\u517c\u5bb9\u7684\u63a5\u53e3\u4e4b\u95f4\u7684\u6865\u6881\u3002<\/p>\n \u8fd9\u79cd\u6a21\u5f0f\u6d89\u53ca\u5230\u4e00\u4e2a\u5355\u4e00\u7684\u7c7b\uff0c\u8be5\u7c7b\u8d1f\u8d23\u52a0\u5165\u72ec\u7acb\u7684\u6216\u4e0d\u517c\u5bb9\u7684\u63a5\u53e3\u529f\u80fd\u3002<\/p>\n \u5c06\u4e00\u4e2a\u7c7b\u7684\u63a5\u53e3\u8f6c\u6362\u6210\u5ba2\u6237\u5e0c\u671b\u7684\u53e6\u5916\u4e00\u4e2a\u63a5\u53e3\u3002\u9002\u914d\u5668\u6a21\u5f0f\u4f7f\u5f97\u539f\u672c\u7531\u4e8e\u63a5\u53e3\u4e0d\u517c\u5bb9\u800c\u4e0d\u80fd\u4e00\u8d77\u5de5\u4f5c\u7684\u90a3\u4e9b\u7c7b\u53ef\u4ee5\u4e00\u8d77\u5de5\u4f5c\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u88c5\u9970\u5668\u6a21\u5f0f\uff08Decorator Pattern\uff09\u5141\u8bb8\u5411\u4e00\u4e2a\u73b0\u6709\u7684\u5bf9\u8c61\u6dfb\u52a0\u65b0\u7684\u529f\u80fd\uff0c\u540c\u65f6\u53c8\u4e0d\u6539\u53d8\u5176\u7ed3\u6784\u3002<\/p>\n \u8fd9\u79cd\u6a21\u5f0f\u521b\u5efa\u4e86\u4e00\u4e2a\u88c5\u9970\u7c7b\uff0c\u7528\u6765\u5305\u88c5\u539f\u6709\u7684\u7c7b\uff0c\u5e76\u5728\u4fdd\u6301\u7c7b\u65b9\u6cd5\u7b7e\u540d\u5b8c\u6574\u6027\u7684\u524d\u63d0\u4e0b\uff0c\u63d0\u4f9b\u4e86\u989d\u5916\u7684\u529f\u80fd\u3002<\/p>\n \u52a8\u6001\u5730\u7ed9\u4e00\u4e2a\u5bf9\u8c61\u6dfb\u52a0\u4e00\u4e9b\u989d\u5916\u7684\u804c\u8d23\u3002\u5c31\u589e\u52a0\u529f\u80fd\u6765\u8bf4\uff0c\u88c5\u9970\u5668\u6a21\u5f0f\u76f8\u6bd4\u751f\u6210\u5b50\u7c7b\u66f4\u4e3a\u7075\u6d3b\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u5728\u4ee3\u7406\u6a21\u5f0f\uff08Proxy Pattern\uff09\u4e2d\uff0c\u4e00\u4e2a\u7c7b\u4ee3\u8868\u53e6\u4e00\u4e2a\u7c7b\u7684\u529f\u80fd\u3002<\/p>\n \u5728\u4ee3\u7406\u6a21\u5f0f\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u5177\u6709\u73b0\u6709\u5bf9\u8c61\u7684\u5bf9\u8c61\uff0c\u4ee5\u4fbf\u5411\u5916\u754c\u63d0\u4f9b\u529f\u80fd\u63a5\u53e3\u3002<\/p>\n \u4e3a\u5176\u4ed6\u5bf9\u8c61\u63d0\u4f9b\u4e00\u79cd\u4ee3\u7406\u4ee5\u63a7\u5236\u5bf9\u8fd9\u4e2a\u5bf9\u8c61\u7684\u8bbf\u95ee\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u6ce8\u610f\u4e8b\u9879\uff1a<\/p>\n 1\u3001\u548c\u9002\u914d\u5668\u6a21\u5f0f\u7684\u533a\u522b\uff1a\u9002\u914d\u5668\u6a21\u5f0f\u4e3b\u8981\u6539\u53d8\u6240\u8003\u8651\u5bf9\u8c61\u7684\u63a5\u53e3\uff0c\u800c\u4ee3\u7406\u6a21\u5f0f\u4e0d\u80fd\u6539\u53d8\u6240\u4ee3\u7406\u7c7b\u7684\u63a5\u53e3\u3002<\/p>\n 2\u3001\u548c\u88c5\u9970\u5668\u6a21\u5f0f\u7684\u533a\u522b\uff1a\u88c5\u9970\u5668\u6a21\u5f0f\u4e3a\u4e86\u589e\u5f3a\u529f\u80fd\uff0c\u800c\u4ee3\u7406\u6a21\u5f0f\u662f\u4e3a\u4e86\u52a0\u4ee5\u63a7\u5236\u3002<\/p>\n \u5916\u89c2\u6a21\u5f0f\uff08Facade Pattern\uff09\u9690\u85cf\u7cfb\u7edf\u7684\u590d\u6742\u6027\uff0c\u5e76\u5411\u5ba2\u6237\u7aef\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5ba2\u6237\u7aef\u53ef\u4ee5\u8bbf\u95ee\u7cfb\u7edf\u7684\u63a5\u53e3\u3002<\/p>\n \u8fd9\u79cd\u6a21\u5f0f\u6d89\u53ca\u5230\u4e00\u4e2a\u5355\u4e00\u7684\u7c7b\uff0c\u8be5\u7c7b\u63d0\u4f9b\u4e86\u5ba2\u6237\u7aef\u8bf7\u6c42\u7684\u7b80\u5316\u65b9\u6cd5\u548c\u5bf9\u73b0\u6709\u7cfb\u7edf\u7c7b\u65b9\u6cd5\u7684\u59d4\u6258\u8c03\u7528\u3002<\/p>\n \u4e3a\u5b50\u7cfb\u7edf\u4e2d\u7684\u4e00\u7ec4\u63a5\u53e3\u63d0\u4f9b\u4e00\u4e2a\u4e00\u81f4\u7684\u754c\u9762\uff0c\u5916\u89c2\u6a21\u5f0f\u5b9a\u4e49\u4e86\u4e00\u4e2a\u9ad8\u5c42\u63a5\u53e3\uff0c\u8fd9\u4e2a\u63a5\u53e3\u4f7f\u5f97\u8fd9\u4e00\u5b50\u7cfb\u7edf\u66f4\u52a0\u5bb9\u6613\u4f7f\u7528\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u6865\u63a5\u6a21\u5f0f\uff08Bridge Pattern\uff09\u662f\u7528\u4e8e\u628a\u62bd\u8c61\u5316\u4e0e\u5b9e\u73b0\u5316\u89e3\u8026\uff0c\u4f7f\u5f97\u4e8c\u8005\u53ef\u4ee5\u72ec\u7acb\u53d8\u5316\u3002\u5b83\u901a\u8fc7\u63d0\u4f9b\u62bd\u8c61\u5316\u548c\u5b9e\u73b0\u5316\u4e4b\u95f4\u7684\u6865\u63a5\u7ed3\u6784\uff0c\u6765\u5b9e\u73b0\u4e8c\u8005\u7684\u89e3\u8026\u3002<\/p>\n \u8fd9\u79cd\u6a21\u5f0f\u6d89\u53ca\u5230\u4e00\u4e2a\u4f5c\u4e3a\u6865\u63a5\u7684\u63a5\u53e3\uff0c\u4f7f\u5f97\u5b9e\u4f53\u7c7b\u7684\u529f\u80fd\u72ec\u7acb\u4e8e\u63a5\u53e3\u5b9e\u73b0\u7c7b\u3002\u8fd9\u4e24\u79cd\u7c7b\u578b\u7684\u7c7b\u53ef\u88ab\u7ed3\u6784\u5316\u6539\u53d8\u800c\u4e92\u4e0d\u5f71\u54cd\u3002<\/p>\n \u5c06\u62bd\u8c61\u90e8\u5206\u4e0e\u5b9e\u73b0\u90e8\u5206\u5206\u79bb\uff0c\u4f7f\u5b83\u4eec\u90fd\u53ef\u4ee5\u72ec\u7acb\u7684\u53d8\u5316\u3002<\/p>\n \u53c8\u79f0\u4e3a\u67c4\u4f53\uff08Handle and Body\uff09\u6a21\u5f0f\u6216\u63a5\u53e3\uff08Interface\uff09\u6a21\u5f0f\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u6ce8\u610f\u4e8b\u9879\uff1a\u5bf9\u4e8e\u4e24\u4e2a\u72ec\u7acb\u53d8\u5316\u7684\u7ef4\u5ea6\uff0c\u4f7f\u7528\u6865\u63a5\u6a21\u5f0f\u518d\u9002\u5408\u4e0d\u8fc7\u4e86\u3002<\/p>\n \u7ec4\u5408\u6a21\u5f0f\uff08Composite Pattern\uff09\uff0c\u53c8\u53eb\u90e8\u5206\u6574\u4f53\u6a21\u5f0f\uff0c\u662f\u7528\u4e8e\u628a\u4e00\u7ec4\u76f8\u4f3c\u7684\u5bf9\u8c61\u5f53\u4f5c\u4e00\u4e2a\u5355\u4e00\u7684\u5bf9\u8c61\u3002\u7ec4\u5408\u6a21\u5f0f\u4f9d\u636e\u6811\u5f62\u7ed3\u6784\u6765\u7ec4\u5408\u5bf9\u8c61\uff0c\u7528\u6765\u8868\u793a\u90e8\u5206\u4ee5\u53ca\u6574\u4f53\u5c42\u6b21\u3002\u8fd9\u79cd\u7c7b\u578b\u7684\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e\u7ed3\u6784\u578b\u6a21\u5f0f\uff0c\u5b83\u521b\u5efa\u4e86\u5bf9\u8c61\u7ec4\u7684\u6811\u5f62\u7ed3\u6784<\/strong>\u3002<\/p>\n \u8fd9\u79cd\u6a21\u5f0f\u521b\u5efa\u4e86\u4e00\u4e2a\u5305\u542b\u81ea\u5df1\u5bf9\u8c61\u7ec4\u7684\u7c7b\u3002\u8be5\u7c7b\u63d0\u4f9b\u4e86\u4fee\u6539\u76f8\u540c\u5bf9\u8c61\u7ec4\u7684\u65b9\u5f0f\u3002<\/p>\n \u5c06\u5bf9\u8c61\u7ec4\u5408\u6210\u6811\u5f62\u7ed3\u6784\u4ee5\u8868\u793a"\u90e8\u5206-\u6574\u4f53"\u7684\u5c42\u6b21\u7ed3\u6784\u3002\u7ec4\u5408\u6a21\u5f0f\u4f7f\u5f97\u7528\u6237\u5bf9\u5355\u4e2a\u5bf9\u8c61\u548c\u7ec4\u5408\u5bf9\u8c61\u7684\u4f7f\u7528\u5177\u6709\u4e00\u81f4\u6027\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u4eab\u5143\u6a21\u5f0f\uff08Flyweight Pattern\uff09\u4e3b\u8981\u7528\u4e8e\u51cf\u5c11\u521b\u5efa\u5bf9\u8c61\u7684\u6570\u91cf\uff0c\u4ee5\u51cf\u5c11\u5185\u5b58\u5360\u7528\u548c\u63d0\u9ad8\u6027\u80fd\u3002\u8fd9\u79cd\u7c7b\u578b\u7684\u8bbe\u8ba1\u6a21\u5f0f\u5c5e\u4e8e\u7ed3\u6784\u578b\u6a21\u5f0f\uff0c\u5b83\u63d0\u4f9b\u4e86\u51cf\u5c11\u5bf9\u8c61\u6570\u91cf\u4ece\u800c\u6539\u5584\u5e94\u7528\u6240\u9700\u7684\u5bf9\u8c61\u7ed3\u6784\u7684\u65b9\u5f0f\u3002<\/p>\n \u4eab\u5143\u6a21\u5f0f\u5c1d\u8bd5\u91cd\u7528\u73b0\u6709\u7684\u540c\u7c7b\u5bf9\u8c61\uff0c\u5982\u679c\u672a\u627e\u5230\u5339\u914d\u7684\u5bf9\u8c61\uff0c\u5219\u521b\u5efa\u65b0\u5bf9\u8c61\u3002<\/p>\n \u8fd0\u7528\u5171\u4eab\u6280\u672f\u6709\u6548\u5730\u652f\u6301\u5927\u91cf\u7ec6\u7c92\u5ea6\u7684\u5bf9\u8c61\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u5728\u7b56\u7565\u6a21\u5f0f\uff08Strategy Pattern\uff09\u4e2d\uff0c\u4e00\u4e2a\u7c7b\u7684\u884c\u4e3a\u6216\u5176\u7b97\u6cd5\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u66f4\u6539\u3002<\/p>\n \u5728\u7b56\u7565\u6a21\u5f0f\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u8868\u793a\u5404\u79cd\u7b56\u7565\u7684\u5bf9\u8c61\u548c\u4e00\u4e2a\u884c\u4e3a\u968f\u7740\u7b56\u7565\u5bf9\u8c61\u6539\u53d8\u800c\u6539\u53d8\u7684context\u5bf9\u8c61\u3002\u7b56\u7565\u5bf9\u8c61\u6539\u53d8context\u5bf9\u8c61\u7684\u6267\u884c\u7b97\u6cd5\u3002<\/p>\n \u5b9a\u4e49\u4e00\u7cfb\u5217\u7684\u7b97\u6cd5\uff0c\u628a\u5b83\u4eec\u4e00\u4e2a\u4e2a\u5c01\u88c5\u8d77\u6765\uff0c\u5e76\u4e14\u4f7f\u5b83\u4eec\u53ef\u76f8\u4e92\u66ff\u6362\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u5728\u6a21\u677f\u6a21\u5f0f\uff08Template Pattern\uff09\u4e2d\uff0c\u4e00\u4e2a\u62bd\u8c61\u7c7b\u516c\u5f00\u5b9a\u4e49\u4e86\u6267\u884c\u5b83\u7684\u65b9\u6cd5\u7684\u65b9\u5f0f\/\u6a21\u677f\u3002\u5b83\u7684\u5b50\u7c7b\u53ef\u4ee5\u6309\u9700\u8981\u91cd\u5199\u65b9\u6cd5\u5b9e\u73b0\uff0c\u4f46\u8c03\u7528\u5c06\u4ee5\u62bd\u8c61\u7c7b\u4e2d\u5b9a\u4e49\u7684\u65b9\u5f0f\u8fdb\u884c\u3002<\/p>\n \u5b9a\u4e49\u4e00\u4e2a\u64cd\u4f5c\u4e2d\u7684\u7b97\u6cd5\u7684\u9aa8\u67b6\uff0c\u800c\u5c06\u4e00\u4e9b\u6b65\u9aa4\u5ef6\u8fdf\u5230\u5b50\u7c7b\u4e2d\u3002\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\u8be5\u7b97\u6cd5\u7684\u67d0\u4e9b\u7279\u5b9a\u6b65\u9aa4\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u5f53\u5bf9\u8c61\u95f4\u5b58\u5728\u4e00\u5bf9\u591a\u5173\u7cfb\u65f6\uff0c\u5219\u4f7f\u7528\u89c2\u5bdf\u8005\u6a21\u5f0f\uff08ObserverPattern\uff09\u3002\u6bd4\u5982\uff0c\u5f53\u4e00\u4e2a\u5bf9\u8c61\u88ab\u4fee\u6539\u65f6\uff0c\u5219\u4f1a\u81ea\u52a8\u901a\u77e5\u5b83\u7684\u4f9d\u8d56\u5bf9\u8c61\u3002<\/p>\n \u5b9a\u4e49\u5bf9\u8c61\u95f4\u7684\u4e00\u79cd\u4e00\u5bf9\u591a\u7684\u4f9d\u8d56\u5173\u7cfb\uff0c\u5f53\u4e00\u4e2a\u5bf9\u8c61\u7684\u72b6\u6001\u53d1\u751f\u6539\u53d8\u65f6\uff0c\u6240\u6709\u4f9d\u8d56\u4e8e\u5b83\u7684\u5bf9\u8c61\u90fd\u5f97\u5230\u901a\u77e5\u5e76\u88ab\u81ea\u52a8\u66f4\u65b0\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a 3\u3001\u6bd4\u5982\u5f20\u4e09\u6295\u8d44\u5931\u8d25\u8dd1\u8def\u4e86\uff0c\u4ed6\u6b20\u4e86\u8bb8\u591a\u4eba\u7684\u94b1\uff0c\u6bd4\u5982\u674e\u56db\u738b\u4e94\u8d75\u516d\u7b49\u7b49\uff0c\u4f46\u5f20\u4e09\u662f\u4e2a\u5b88\u4fe1\u7528\u7684\u4eba\uff0c\u4e00\u65e6\u7ecf\u6d4e\u72b6\u51b5\u597d\u4e86\uff0c\u5c31\u4f1a\u8fd8\u7ed9\u6bcf\u4e2a\u4eba\u94b1\u3002\u90a3\u4eba\u4eec\u600e\u4e48\u77e5\u9053\u4ec0\u4e48\u65f6\u5019\u8fd8\u94b1\u5462\uff1f\u7b2c\u4e00\u79cd\u65b9\u6cd5\uff0c\u5c31\u662f\u6bcf\u5929\u90fd\u53bb\u627e\u5f20\u4e09\u8981\u94b1\uff0c\u6bcf\u4e2a\u4eba\u6bcf\u5929\u7ed9\u5f20\u4e09\u6253\u4e2a\u7535\u8bdd\uff0c\u50ac\u4ed6\u8fd8\u94b1\u3002\u8fd9\u65e0\u7591\u4e0d\u662f\u4e2a\u597d\u529e\u6cd5\u3002\u65e2\u7136\u5927\u5bb6\u77e5\u9053\u5f20\u4e09\u662f\u4e2a\u5b88\u4fe1\u7528\u7684\u4eba\uff0c\u90a3\u5c31\u7b49\u5f20\u4e09\u4ec0\u4e48\u65f6\u5019\u901a\u77e5\u4ed6\u4eec\u5c31\u884c\u4e86\u3002<\/p>\n \u8fd9\u5c31\u662f\u89c2\u5bdf\u8005\u6a21\u5f0f\u7684\u6a21\u578b\uff0c\u5f20\u4e09\u5c31\u662f\u4e3b\u9898\u5bf9\u8c61\uff0c\u674e\u56db\u738b\u4e94\u8fd9\u4e9b\u5c31\u662f\u89c2\u5bdf\u8005\uff0c\u901a\u8fc7\u4e3b\u9898\u5bf9\u8c61\u91cc\u4fdd\u5b58\u6240\u6709\u89c2\u5bdf\u8005\u7684\u6307\u9488\uff0c\u5728\u5bf9\u8c61\u548c\u5bf9\u8c61\u95f4\u5f62\u6210\u4e00\u5bf9\u4e00\u6216\u8005\u4e00\u5bf9\u591a\u7684\u4f9d\u8d56\u5173\u7cfb\uff0c\u4f7f\u5f97\u4e3b\u9898\u5bf9\u8c61\u53d1\u751f\u6539\u53d8\u65f6\uff0c\u89c2\u5bdf\u8005\u90fd\u80fd\u77e5\u9053\u3002\u6bd4\u5982\u865a\u5e7b\u7684\u4ee3\u7406\uff0c\u6216\u8005\u4e4b\u524d\u7684dnf\u7684\u5bb6\u65cf\u804a\u5929\uff0c\u90fd\u53ef\u4ee5\u7528\u8fd9\u79cd\u65b9\u6cd5\u5b9e\u73b0\u3002<\/p>\n<\/blockquote>\n \u8fed\u4ee3\u5668\u6a21\u5f0f\uff08Iterator Pattern\uff09\u662fJava\u548c.Net\u7f16\u7a0b\u73af\u5883\u4e2d\u975e\u5e38\u5e38\u7528\u7684\u8bbe\u8ba1\u6a21\u5f0f\u3002\u8fd9\u79cd\u6a21\u5f0f\u7528\u4e8e\u987a\u5e8f\u8bbf\u95ee\u96c6\u5408\u5bf9\u8c61\u7684\u5143\u7d20\uff0c\u4e0d\u9700\u8981\u77e5\u9053\u96c6\u5408\u5bf9\u8c61\u7684\u5e95\u5c42\u8868\u793a\u3002<\/p>\n \u8fed\u4ee3\u5668\u6a21\u5f0f\u5c5e\u4e8e\u884c\u4e3a\u578b\u6a21\u5f0f\u3002<\/p>\n \u63d0\u4f9b\u4e00\u79cd\u65b9\u6cd5\u987a\u5e8f\u8bbf\u95ee\u4e00\u4e2a\u805a\u5408\u5bf9\u8c61\u4e2d\u5404\u4e2a\u5143\u7d20\uff0c\u800c\u53c8\u65e0\u987b\u66b4\u9732\u8be5\u5bf9\u8c61\u7684\u5185\u90e8\u8868\u793a\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1aJAVA\u4e2d\u7684iterator\u3002<\/p>\n<\/blockquote>\n \u987e\u540d\u601d\u4e49\uff0c\u8d23\u4efb\u94fe\u6a21\u5f0f\uff08Chain of Responsibility Pattern\uff09\u4e3a\u8bf7\u6c42\u521b\u5efa\u4e86\u4e00\u4e2a\u63a5\u6536\u8005\u5bf9\u8c61\u7684\u94fe\u3002\u8fd9\u79cd\u6a21\u5f0f\u7ed9\u4e88\u8bf7\u6c42\u7684\u7c7b\u578b\uff0c\u5bf9\u8bf7\u6c42\u7684\u53d1\u9001\u8005\u548c\u63a5\u6536\u8005\u8fdb\u884c\u89e3\u8026\u3002<\/p>\n \u5728\u8fd9\u79cd\u6a21\u5f0f\u4e2d\uff0c\u901a\u5e38\u6bcf\u4e2a\u63a5\u6536\u8005\u90fd\u5305\u542b\u5bf9\u53e6\u4e00\u4e2a\u63a5\u6536\u8005\u7684\u5f15\u7528\u3002\u5982\u679c\u4e00\u4e2a\u5bf9\u8c61\u4e0d\u80fd\u5904\u7406\u8be5\u8bf7\u6c42\uff0c\u90a3\u4e48\u5b83\u4f1a\u628a\u76f8\u540c\u7684\u8bf7\u6c42\u4f20\u7ed9\u4e0b\u4e00\u4e2a\u63a5\u6536\u8005\uff0c\u4f9d\u6b64\u7c7b\u63a8\u3002<\/p>\n \u907f\u514d\u8bf7\u6c42\u53d1\u9001\u8005\u4e0e\u63a5\u6536\u8005\u8026\u5408\u5728\u4e00\u8d77\uff0c\u8ba9\u591a\u4e2a\u5bf9\u8c61\u90fd\u6709\u53ef\u80fd\u63a5\u6536\u8bf7\u6c42\uff0c\u5c06\u8fd9\u4e9b\u5bf9\u8c61\u8fde\u63a5\u6210\u4e00\u6761\u94fe\uff0c\u5e76\u4e14\u6cbf\u7740\u8fd9\u6761\u94fe\u4f20\u9012\u8bf7\u6c42\uff0c\u76f4\u5230\u6709\u5bf9\u8c61\u5904\u7406\u5b83\u4e3a\u6b62\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a\u7ea2\u697c\u68a6\u4e2d\u7684"\u51fb\u9f13\u4f20\u82b1"\u3002<\/p>\n<\/blockquote>\n \u547d\u4ee4\u6a21\u5f0f\uff08Command Pattern\uff09\u662f\u4e00\u79cd\u6570\u636e\u9a71\u52a8\u7684\u8bbe\u8ba1\u6a21\u5f0f\u3002\u8bf7\u6c42\u4ee5\u547d\u4ee4\u7684\u5f62\u5f0f\u5305\u88f9\u5728\u5bf9\u8c61\u4e2d\uff0c\u5e76\u4f20\u7ed9\u8c03\u7528\u5bf9\u8c61\u3002\u8c03\u7528\u5bf9\u8c61\u5bfb\u627e\u53ef\u4ee5\u5904\u7406\u8be5\u547d\u4ee4\u7684\u5408\u9002\u7684\u5bf9\u8c61\uff0c\u5e76\u628a\u8be5\u547d\u4ee4\u4f20\u7ed9\u76f8\u5e94\u7684\u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u6267\u884c\u547d\u4ee4\u3002<\/p>\n \u5c06\u4e00\u4e2a\u8bf7\u6c42\u5c01\u88c5\u6210\u4e00\u4e2a\u5bf9\u8c61\uff0c\u4ece\u800c\u4f7f\u60a8\u53ef\u4ee5\u7528\u4e0d\u540c\u7684\u8bf7\u6c42\u5bf9\u5ba2\u6237\u8fdb\u884c\u53c2\u6570\u5316\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a\u7535\u89c6\u673a\u662f\u8bf7\u6c42\u7684\u63a5\u6536\u8005\uff0c\u9065\u63a7\u5668\u662f\u8bf7\u6c42\u7684\u53d1\u9001\u8005\uff0c\u9065\u63a7\u5668\u4e0a\u6709\u4e00\u4e9b\u6309\u94ae\uff0c\u4e0d\u540c\u7684\u6309\u94ae\u5bf9\u5e94\u7535\u89c6\u673a\u7684\u4e0d\u540c\u64cd\u4f5c\u3002\u62bd\u8c61\u547d\u4ee4\u89d2\u8272\u7531\u4e00\u4e2a\u547d\u4ee4\u63a5\u53e3\u6765\u626e\u6f14\uff0c\u6709\u4e09\u4e2a\u5177\u4f53\u7684\u547d\u4ee4\u7c7b\u5b9e\u73b0\u4e86\u62bd\u8c61\u547d\u4ee4\u63a5\u53e3\uff0c\u8fd9\u4e09\u4e2a\u5177\u4f53\u547d\u4ee4\u7c7b\u5206\u522b\u4ee3\u8868\u4e09\u79cd\u64cd\u4f5c\uff1a\u6253\u5f00\u7535\u89c6\u673a\u3001\u5173\u95ed\u7535\u89c6\u673a\u548c\u5207\u6362\u9891\u9053\u3002<\/p>\n<\/blockquote>\n \u5907\u5fd8\u5f55\u6a21\u5f0f\uff08Memento Pattern\uff09\u4fdd\u5b58\u4e00\u4e2a\u5bf9\u8c61\u7684\u67d0\u4e2a\u72b6\u6001\uff0c\u4ee5\u4fbf\u5728\u9002\u5f53\u7684\u65f6\u5019\u6062\u590d\u5bf9\u8c61\u3002<\/p>\n \u5728\u4e0d\u7834\u574f\u5c01\u88c5\u6027\u7684\u524d\u63d0\u4e0b\uff0c\u6355\u83b7\u4e00\u4e2a\u5bf9\u8c61\u7684\u5185\u90e8\u72b6\u6001\uff0c\u5e76\u5728\u8be5\u5bf9\u8c61\u4e4b\u5916\u4fdd\u5b58\u8fd9\u4e2a\u72b6\u6001\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u5728\u72b6\u6001\u6a21\u5f0f\uff08State Pattern\uff09\u4e2d\uff0c\u7c7b\u7684\u884c\u4e3a\u662f\u57fa\u4e8e\u5b83\u7684\u72b6\u6001\u6539\u53d8\u7684\u3002<\/p>\n \u5728\u72b6\u6001\u6a21\u5f0f\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u8868\u793a\u5404\u79cd\u72b6\u6001\u7684\u5bf9\u8c61\u548c\u4e00\u4e2a\u884c\u4e3a\u968f\u7740\u72b6\u6001\u5bf9\u8c61\u6539\u53d8\u800c\u6539\u53d8\u7684context\u5bf9\u8c61\u3002<\/p>\n \u5141\u8bb8\u5bf9\u8c61\u5728\u5185\u90e8\u72b6\u6001\u53d1\u751f\u6539\u53d8\u65f6\u6539\u53d8\u5b83\u7684\u884c\u4e3a\uff0c\u5bf9\u8c61\u770b\u8d77\u6765\u597d\u50cf\u4fee\u6539\u4e86\u5b83\u7684\u7c7b\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u5728\u8bbf\u95ee\u8005\u6a21\u5f0f\uff08Visitor Pattern\uff09\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u4e00\u4e2a\u8bbf\u95ee\u8005\u7c7b\uff0c\u5b83\u6539\u53d8\u4e86\u5143\u7d20\u7c7b\u7684\u6267\u884c\u7b97\u6cd5\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u5143\u7d20\u7684\u6267\u884c\u7b97\u6cd5\u53ef\u4ee5\u968f\u7740\u8bbf\u95ee\u8005\u6539\u53d8\u800c\u6539\u53d8\u3002\u6839\u636e\u6a21\u5f0f\uff0c\u5143\u7d20\u5bf9\u8c61\u5df2\u63a5\u53d7\u8bbf\u95ee\u8005\u5bf9\u8c61\uff0c\u8fd9\u6837\u8bbf\u95ee\u8005\u5bf9\u8c61\u5c31\u53ef\u4ee5\u5904\u7406\u5143\u7d20\u5bf9\u8c61\u4e0a\u7684\u64cd\u4f5c\u3002<\/p>\n \u4e3b\u8981\u5c06\u6570\u636e\u7ed3\u6784\u4e0e\u6570\u636e\u64cd\u4f5c\u5206\u79bb\u3002<\/p>\n \u4e3b\u8981\u89e3\u51b3\uff1a\u7a33\u5b9a\u7684\u6570\u636e\u7ed3\u6784\u548c\u6613\u53d8\u7684\u64cd\u4f5c\u8026\u5408\u95ee\u9898\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a\u60a8\u5728\u670b\u53cb\u5bb6\u505a\u5ba2\uff0c\u60a8\u662f\u8bbf\u95ee\u8005\uff0c\u670b\u53cb\u63a5\u53d7\u60a8\u7684\u8bbf\u95ee\uff0c\u60a8\u901a\u8fc7\u670b\u53cb\u7684\u63cf\u8ff0\uff0c\u7136\u540e\u5bf9\u670b\u53cb\u7684\u63cf\u8ff0\u505a\u51fa\u4e00\u4e2a\u5224\u65ad\uff0c\u8fd9\u5c31\u662f\u8bbf\u95ee\u8005\u6a21\u5f0f\u3002<\/p>\n<\/blockquote>\n \u4e2d\u4ecb\u8005\u6a21\u5f0f\uff08Mediator Pattern\uff09\u662f\u7528\u6765\u964d\u4f4e\u591a\u4e2a\u5bf9\u8c61\u548c\u7c7b\u4e4b\u95f4\u7684\u901a\u4fe1\u590d\u6742\u6027\u3002\u8fd9\u79cd\u6a21\u5f0f\u63d0\u4f9b\u4e86\u4e00\u4e2a\u4e2d\u4ecb\u7c7b\uff0c\u8be5\u7c7b\u901a\u5e38\u5904\u7406\u4e0d\u540c\u7c7b\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u5e76\u652f\u6301\u677e\u8026\u5408\uff0c\u4f7f\u4ee3\u7801\u6613\u4e8e\u7ef4\u62a4\u3002<\/p>\n \u7528\u4e00\u4e2a\u4e2d\u4ecb\u5bf9\u8c61\u6765\u5c01\u88c5\u4e00\u7cfb\u5217\u7684\u5bf9\u8c61\u4ea4\u4e92\uff0c\u4e2d\u4ecb\u8005\u4f7f\u5404\u5bf9\u8c61\u4e0d\u9700\u8981\u663e\u5f0f\u5730\u76f8\u4e92\u5f15\u7528\uff0c\u4ece\u800c\u4f7f\u5176\u8026\u5408\u677e\u6563\uff0c\u800c\u4e14\u53ef\u4ee5\u72ec\u7acb\u5730\u6539\u53d8\u5b83\u4eec\u4e4b\u95f4\u7684\u4ea4\u4e92\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a \u89e3\u91ca\u5668\u6a21\u5f0f\uff08Interpreter Pattern\uff09\u63d0\u4f9b\u4e86\u8bc4\u4f30\u8bed\u8a00\u7684\u8bed\u6cd5\u6216\u8868\u8fbe\u5f0f\u7684\u65b9\u5f0f\u3002\u8fd9\u79cd\u6a21\u5f0f\u5b9e\u73b0\u4e86\u4e00\u4e2a\u8868\u8fbe\u5f0f\u63a5\u53e3\uff0c\u8be5\u63a5\u53e3\u89e3\u91ca\u4e00\u4e2a\u7279\u5b9a\u7684\u4e0a\u4e0b\u6587\u3002\u8fd9\u79cd\u6a21\u5f0f\u88ab\u7528\u5728SQL\u89e3\u6790\u3001\u7b26\u53f7\u5904\u7406\u5f15\u64ce\u7b49\u3002<\/p>\n \u7ed9\u5b9a\u4e00\u4e2a\u8bed\u8a00\uff0c\u5b9a\u4e49\u5b83\u7684\u6587\u6cd5\u8868\u793a\uff0c\u5e76\u5b9a\u4e49\u4e00\u4e2a\u89e3\u91ca\u5668\uff0c\u8fd9\u4e2a\u89e3\u91ca\u5668\u4f7f\u7528\u8be5\u6807\u8bc6\u6765\u89e3\u91ca\u8bed\u8a00\u4e2d\u7684\u53e5\u5b50\u3002<\/p>\n \u5e94\u7528\u5b9e\u4f8b\uff1a\u7f16\u8bd1\u5668\u3001\u8fd0\u7b97\u8868\u8fbe\u5f0f\u8ba1\u7b97\u3002<\/p>\n<\/blockquote>\n <\/body> \u4e00\u3001\u8bbe\u8ba1\u6a21\u5f0f\u7684\u6765\u6e90 \u8bbe\u8ba1\u6a21\u5f0f\uff08Design Pattern\uff09\u662f\u524d\u8f88\u4eec\u5bf9\u4ee3\u7801\u5f00\u53d1\u7ecf\u9a8c\u7684\u603b\u7ed3\uff0c\u662f\u89e3\u51b3\u7279\u5b9a\u95ee\u9898\u7684\u4e00\u7cfb […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[4],"class_list":["post-243","post","type-post","status-publish","format-standard","hentry","category-c","tag-c"],"_links":{"self":[{"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=243"}],"version-history":[{"count":3,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/243\/revisions"}],"predecessor-version":[{"id":401,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/243\/revisions\/401"}],"wp:attachment":[{"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
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\n2\u3001\u62bd\u8c61\u4e0d\u5e94\u8be5\u4f9d\u8d56\u4e8e\u7ec6\u8282\uff0c\u7ec6\u8282\u5e94\u8be5\u4f9d\u8d56\u4e8e\u62bd\u8c61\u3002<\/p>\n<\/blockquote>\n\n
\n2\u3001\u7c7b\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb\u5e94\u8be5\u5efa\u7acb\u5728\u6700\u5c0f\u7684\u63a5\u53e3\u4e0a\u3002<\/p>\n<\/blockquote>\n\n
\n
\u8bb0\u5fc6\u53e3\u8bc0\uff1aSOLID CD\uff08\u7a33\u56fa\u7684CD\uff09\u3002\n<\/code><\/pre>\n\u4e09\u3001\u8bbe\u8ba1\u6a21\u5f0f\u7684\u4e09\u5927\u7c7b<\/h2>\n
\u8bb0\u5fc6\u53e3\u8bc0\uff1a\u521b\u5de5\u539f\u5355\u5efa\u62bd\uff08\u521b\u516c\u56ed\uff0c\u4f46\u89c1\u6101\uff09\n<\/code><\/pre>\n\u8bb0\u5fc6\u53e3\u8bc0\uff1a\u7ed3\u4eab\u5916\u7ec4\u9002\u4ee3\u88c5\u6865\uff08\u59d0\u60f3\u5916\u79df\uff0c\u4e16\u4ee3\u88c5\u6865\uff09\n<\/code><\/pre>\n\u8bb0\u5fc6\u53e3\u8bc0\uff1a\u884c\u72b6\u8d23\u4e2d\u6a21\u8bbf\u89e3\u5907\u89c2\u7b56\u547d\u8fed\uff08\u5f62\u72b6\u6298\u4e2d\u6a21\u4eff\uff0c\u6212\u5907\u89c2\u6d4b\u9e23\u7b1b\uff09\n<\/code><\/pre>\n\u56db\u300123\u79cd\u8bbe\u8ba1\u6a21\u5f0f<\/h2>\n
\u521b\u5efa\u578b\u6a21\u5f0f<\/h3>\n
\u5de5\u5382\u6a21\u5f0f<\/h4>\n
\n
\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f<\/h4>\n
\n
\u5355\u4f8b\u6a21\u5f0f<\/h4>\n
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GetInstance<\/code>\u65b9\u6cd5\u4e0a\u76f4\u63a5\u52a0\u9501\uff0c\u786e\u4fdd\u4e86\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u7684\u5b89\u5168\u6027\u3002\u4f46\u662f\uff0c\u8fd9\u4f1a\u5e26\u6765\u6027\u80fd\u95ee\u9898\uff0c\u56e0\u4e3a\u6bcf\u6b21\u8c03\u7528GetInstance<\/code>\u65f6\u90fd\u9700\u8981\u8fdb\u884c\u52a0\u9501\u548c\u89e3\u9501\u64cd\u4f5c\uff0c\u8fd9\u5728\u9ad8\u5e76\u53d1\u60c5\u51b5\u4e0b\u53ef\u80fd\u4f1a\u6210\u4e3a\u6027\u80fd\u74f6\u9888\u3002<\/p>\n<\/li>\nvolatile<\/code>\u5173\u952e\u5b57\u4e5f\u4e0d\u80fd\u5b8c\u5168\u4fdd\u8bc1\u8fd9\u79cd\u65b9\u5f0f\u7684\u6b63\u786e\u6027\u3002C++11\u5f15\u5165\u4e86std::atomic<\/code>\u548c\u5185\u5b58\u6a21\u578b\uff0c\u63d0\u4f9b\u4e86\u5bf9\u53cc\u91cd\u68c0\u67e5\u9501\u7684\u652f\u6301\uff0c\u4f46\u5373\u4fbf\u5982\u6b64\uff0c\u5b83\u4ecd\u7136\u662f\u4e00\u79cd\u8f83\u4e3a\u590d\u6742\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u5bb9\u6613\u51fa\u9519\u3002<\/p>\n<\/li>\nstd::call_once<\/code>\u548cstd::once_flag<\/code>\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u786e\u4fdd\u51fd\u6570\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\u53ea\u88ab\u6267\u884c\u4e00\u6b21\uff0c\u662f\u61d2\u6c49\u5f0f\u5355\u4f8b\u6a21\u5f0f\u7684\u9996\u9009\u5b9e\u73b0\u65b9\u5f0f\u4e4b\u4e00\u3002<\/p>\n<\/li>\nclass Singleton {\npublic:\n static Singleton& GetInstance() {\n static Singleton instance;\n return instance;\n }\n\nprivate:\n Singleton() {} \/\/ \u79c1\u6709\u6784\u9020\u51fd\u6570\n Singleton(const Singleton&); \/\/ \u963b\u6b62\u590d\u5236\u6784\u9020\n Singleton& operator=(const Singleton&); \/\/ \u963b\u6b62\u8d4b\u503c\u64cd\u4f5c\n};\n<\/code><\/pre>\n<\/li>\n<\/ol>\nnew<\/code>\u5173\u952e\u5b57\u5728\u5806\u4e0a\u5206\u914d\u7684\uff0c\u90a3\u4e48\u786e\u5b9e\u9700\u8981\u5728\u9002\u5f53\u7684\u65f6\u5019\u8fdb\u884c\u5220\u9664\uff0c\u4ee5\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u3002\u4e00\u79cd\u5e38\u89c1\u7684\u505a\u6cd5\u662f\u4f7f\u7528\u201c\u667a\u80fd\u6307\u9488\u201d\u6765\u7ba1\u7406\u5355\u4f8b\u5bf9\u8c61\u7684\u5185\u5b58\uff0c\u8fd9\u6837\u53ef\u4ee5\u4fdd\u8bc1\u5728\u4e0d\u518d\u9700\u8981\u65f6\u81ea\u52a8\u91ca\u653e\u5185\u5b58\u3002<\/p>\nstd::shared_ptr<\/code>\u6216\u8005std::unique_ptr<\/code>\uff0c\u6765\u786e\u4fdd\u5355\u4f8b\u5bf9\u8c61\u5728\u4e0d\u518d\u9700\u8981\u65f6\u80fd\u591f\u81ea\u52a8\u91ca\u653e\u3002<\/p>\n#include <memory>\n\nclass Singleton {\npublic:\n static Singleton& getInstance() {\n static std::unique_ptr<Singleton> instance(new Singleton);\n return *instance;\n }\n\n \/\/ \u5176\u4ed6\u6210\u5458\u51fd\u6570\u548c\u53d8\u91cf\n\nprivate:\n Singleton() {} \/\/ \u79c1\u6709\u6784\u9020\u51fd\u6570\n Singleton(const Singleton&); \/\/ \u963b\u6b62\u590d\u5236\u6784\u9020\n Singleton& operator=(const Singleton&); \/\/ \u963b\u6b62\u8d4b\u503c\u64cd\u4f5c\n};\n\nint main() {\n Singleton::getInstance(); \/\/ \u83b7\u53d6\u5355\u4f8b\u5b9e\u4f8b\n \/\/ ...\n return 0;\n}\n\n<\/code><\/pre>\n\u5efa\u9020\u8005\u6a21\u5f0f\uff08\u6784\u5efa\u8005\u6a21\u5f0f\uff09<\/h4>\n
\n
\n1\u3001\u53bb\u80af\u5fb7\u57fa\uff0c\u6c49\u5821\u3001\u53ef\u4e50\u3001\u85af\u6761\u3001\u70b8\u9e21\u7fc5\u7b49\u662f\u4e0d\u53d8\u7684\uff0c\u800c\u5176\u7ec4\u5408\u662f\u7ecf\u5e38\u53d8\u5316\u7684\uff0c\u751f\u6210\u51fa\u6240\u8c13\u7684\u201c\u5957\u9910\u201d\uff1b
\n2\u3001Java \u4e2d\u7684 StringBuilder\u3002<\/p>\n<\/blockquote>\n\u539f\u578b\u6a21\u5f0f<\/h4>\n
\n
\n1\u3001\u7ec6\u80de\u5206\u88c2\uff1b
\n2\u3001Java\u4e2d\u7684 Object clone() \u65b9\u6cd5\u3002<\/p>\n<\/blockquote>\n\u7ed3\u6784\u578b\u6a21\u5f0f<\/h3>\n
\u9002\u914d\u5668\u6a21\u5f0f<\/h4>\n
\n
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\n
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\n
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\n
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\n
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\n
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\n
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\n
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\n
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