{"id":115,"date":"2015-11-02T19:29:37","date_gmt":"2015-11-02T11:29:37","guid":{"rendered":"http:\/\/dishudishu.com\/?p=115"},"modified":"2015-11-02T19:29:37","modified_gmt":"2015-11-02T11:29:37","slug":"oo-design-patterns","status":"publish","type":"post","link":"http:\/\/dishudishu.com\/?p=115","title":{"rendered":"OO + Design Patterns"},"content":{"rendered":"<p>\u672c\u6587\u4e3b\u8981\u5e72\u4e24\u4ef6\u4e8b\u60c5\uff0c\u63a8\u8350\u51e0\u672c\u4e66\uff0c\u4ee5\u53ca\u5b89\u5229\u4e00\u70b9\u83ab\u540d\u5176\u5999\u7684\u7b14\u8bb0\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u524d\u9762\u63d0\u5230\u6211\u88ab\u81ea\u5df1\u5199\u7684\u8bcd\u6cd5\u5206\u6790\u7a0b\u5e8f\u6df1\u6df1\u5730\u4f24\u5bb3\u4e86\uff0c\u56e0\u4e3a\u5b83\u7adf\u7136\u5982\u6b64\u4e4b\u4e11\uff0c\u4e8e\u662f\u51b3\u5fc3\u5b66\u4e60\u8bbe\u8ba1\u6a21\u5f0f\u3002<\/p>\n<p>\u8c8c\u4f3c\u4e00\u822c\u5f88\u5c11\u80fd\u627e\u5230\u67d0\u4e2a\u9886\u57df\uff0c\u662f\u6709\u4e00\u672c\u516c\u8ba4\u7684\u6700\u6743\u5a01\u7684\u53c2\u8003\u4e66\u7c4d\u7684\uff0c\u7136\u800c\u8bbe\u8ba1\u6a21\u5f0f\u5c31\u662f\u8fd9\u6837\u7684\u201c\u5f02\u7c7b\u201d\u3002GoF\u7684<a href=\"http:\/\/book.douban.com\/subject\/1436745\/\">&lt;Design Patterns&gt;<\/a>\u7b80\u76f4\u662f\u8be5\u9886\u57df\u7684\u81f3\u5c0a\u3002\u4f46\u662f\u6211\u8981\u63a8\u53e6\u4e00\u672c<a href=\"http:\/\/book.douban.com\/subject\/2243615\/\">&lt;Head First \u8bbe\u8ba1\u6a21\u5f0f&gt;<\/a>\uff0c\u9002\u5408\u5b8c\u5168\u6ca1\u6709\u4ec0\u4e48OO\u7ecf\u9a8c\u7684\u4eba\u53bb\u8bfb\u3002\u524d\u8005\u57fa\u4e8ec++\u548c\u5c11\u91cfsmalltalk\uff0c\u540e\u8005\u57fa\u4e8eJava\u3002\u4e2a\u4eba\u611f\u53d7\u662f\u7b2c\u4e00\u672c\u66f4\u50cf\u662f\u4e00\u672c\u5b57\u5178\uff0c\u8981\u7406\u89e3\u5404\u79cd\u6a21\u5f0f\u7684\u5185\u6db5\u53ef\u80fd\u4f1a\u6bd4\u8f83\u5403\u529b\uff0c\u7b2c\u4e8c\u672c\u5219\u662f\u7edd\u5bf9\u7684\u795e\u4e66\uff0c\u8f7b\u677e\u7206\u7b11\u4e0d\u7ba1\u591a\u56f0\u90fd\u770b\u7684\u4e0b\uff0c\u5e76\u4e14\u91cc\u9762\u7684\u4f8b\u5b50\u66f4\u57fa\u7840\u66f4\u5177\u4f53\uff0c\u66f4\u9002\u5408\u5165\u95e8\u3002<\/p>\n<p>\u56e0\u4e3a\u6700\u8fd1\u521a\u521a\u5f00\u59cb\u5b66java\u7684OO(Object Oriented)\uff0c\u6240\u4ee5&lt;Head First \u8bbe\u8ba1\u6a21\u5f0f&gt;\u7ed9\u4e86\u6211\u5f88\u591a\u7684\u7075\u611f\u3002\u8bfb\u5230\u6709\u4e0d\u61c2\u7684\u5730\u65b9\u6211\u5c31\u53bb\u7ffb<a href=\"http:\/\/book.douban.com\/subject\/4496038\/\">&lt;Head First Java&gt;<\/a>\uff0c\u4e00\u5468\u8fc7\u53bb\u6da8\u4e86\u5f88\u9ad8\u7684\u59ff\u52bf\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u6709\u4e00\u4e9b\u5173\u4e8eOO\u7684\u60f3\u6cd5\u8981\u5206\u4eab\u3002<\/p>\n<p>\u5173\u4e8e\u7ee7\u627f\u3002\u4ee5\u524d\u4e0d\u61c2\u5f97\u7ee7\u627f\u662f\u4e3a\u4e86\u4ec0\u4e48\uff0c\u505a\u4f5c\u4e1a\u4e3a\u4e86\u82b1\u6837\u70ab\u6280\u5c31\u5f3a\u884c\u7ee7\u627f\u3002\u540e\u6765\u8fd9\u5b66\u671f\u8001\u5e08\u8bf4\u7ee7\u627f\u4e0d\u4e3a\u4ec0\u4e48\uff0c\u4e5f\u53ea\u4e0d\u8fc7\u662f<span style=\"text-decoration: underline;\">\u4e3a\u4e86\u590d\u7528\u4e00\u4e9b\u4ee3\u7801<\/span>\uff0c\u8ba9\u4f60\u5c11\u7801\u4e00\u70b9\uff08\u5f53\u65f6\u6211\u6697\u60f3\uff1a\u8fd9\u7406\u7531\u597d\u8822\uff09\u3002\u540e\u6765\u8fc7\u4e86\u597d\u4e45\uff0c\u76f4\u5230\u6211\u5728\u770b\u8bbe\u8ba1\u6a21\u5f0f\u7684\u65f6\u5019\u624d\u91cd\u65b0\u60f3\u5230\u8fd9\u53e5\u8bdd\u3002\u6211\u89c9\u5f97\u5176\u5b9e\u590d\u7528\u7684\u610f\u4e49\u66f4\u5728\u4e8e\u5b83\u66f4\u652f\u6301\u201c\u7ef4\u62a4\u201d\uff0c\u8bf4\u7684\u571f\u4e00\u70b9\u662f\u4fee\u6539\u7684\u65f6\u5019\u4f60\u4e0d\u7528\u6539\u5f97\u5f88\u5d29\u6e83\u3002\u8fd9\u662f\u4e2a\u5f88\u5173\u952e\u7684\u70b9\u3002<\/p>\n<p>\u5728c\u9762\u5411\u8fc7\u7a0b\u7f16\u7a0b\u65f6\u4e5f\u63d0\u5230\u8fc7\u7c7b\u4f3c\u7684\u6982\u5ff5\uff0c\u6bd4\u5982\u8981\u4ee3\u7801\u91cd\u6784\u5305\u88c5\u51fa\u4e00\u4e9b\u5b50\u51fd\u6570\u6765\uff0c\u5c31\u662f\u4e3a\u4e86\u5728\u51fa\u9519\u65f6\u4fbf\u4e8e\u4fee\u6539\u3002\u6253ACM\u7684\u65f6\u5019\u8fd9\u4e5f\u662f\u5f88\u91cd\u8981\u7684\uff0c\u6bd4\u5982\u90a3\u4e9b\u5927\u6a21\u62df\u9898\uff0c\u5982\u679c\u76f8\u540c\u7684\u4ee3\u7801\u6bb5\u53ea\u662f\u4e0d\u65ad\u5730ctrl v\u800c\u4e0d\u88c5\u5728\u4e00\u4e2a\u5b50\u51fd\u6570\u91cc\uff0c\u5f53\u53d1\u73b0\u51fa\u9519\u7684\u65f6\u5019\u4e00\u4e2a\u4e00\u4e2a\u6539\u662f\u8981\u5d29\u7684\uff0c\u601d\u8def\u5f88\u5bb9\u6613\u5c31\u98de\u4e86\u3002<\/p>\n<p>\u7ee7\u627f\u6240\u652f\u6301\u7684\u201c\u53ef\u7ef4\u62a4\u201d\u5305\u62ec\u4f46\u4e0d\u5c40\u9650\u4e8e\u6b64\u3002\u4f46\u6211\u611f\u89c9\u7ee7\u627f\u5e76\u4e0d\u662fOO\u7684\u4e3b\u89d2\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u53ef\u80fd\u662f\u56e0\u4e3a\u521a\u5b66\u6240\u4ee5\u6b63\u70ed\u4e4e\uff0c\u6211\u611f\u89c9\u591a\u6001\u624d\u662fOO\u7684\u7cbe\u9ad3\uff0c\u5f53\u7136\u591a\u6001\u79bb\u4e0d\u5f00\u7ee7\u627f\u7b49\u6982\u5ff5\u7684\u914d\u5408\uff0c\u53ea\u662f\u8bf4\u591a\u6001\u8fd9\u4e00\u6982\u5ff5\u672c\u8eab\u6700\u80fd\u4f53\u73b0OO\u7684\u5f3a\u5927\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>OO\u7684\u57fa\u7840\u5c31\u662f\u62bd\u8c61\u3001\u5c01\u88c5\u3001\u591a\u6001\u3001\u7ee7\u627f\u3002<\/p>\n<p>OO\u539f\u5219\uff1a<\/p>\n<p><strong>\u5c01\u88c5\u53d8\u5316<\/strong>\uff08\u628a\u53ef\u80fd\u53d1\u751f\u53d8\u5316\u7684\u5730\u65b9\u5c01\u88c5\u8d77\u6765\uff0c\u5982\u5404\u79cd\u9700\u6c42\u53d8\u66f4\uff09\u3002\u627e\u51fa\u5e94\u7528\u4e2d\u53ef\u80fd\u9700\u8981\u53d8\u5316\u4e4b\u5904\uff0c\u628a\u5b83\u4eec\u72ec\u7acb\u51fa\u6765\uff0c\u4e0d\u8981\u548c\u90a3\u4e9b\u4e0d\u9700\u8981\u53d8\u5316\u7684\u4ee3\u7801\u6df7\u5728\u4e00\u8d77\u3002\u5efa\u7acb\u53ef\u7ef4\u62a4\u7684OO\u7cfb\u7edf\uff0c\u8981\u8bc0\u5c31\u5728\u4e8e\u968f\u65f6\u60f3\u5230\u7cfb\u7edf\u4ee5\u540e\u53ef\u80fd\u9700\u8981\u7684\u53d8\u5316\u4ee5\u53ca\u5e94\u5bf9\u53d8\u5316\u7684\u539f\u5219\u3002<\/p>\n<p><strong>\u591a\u7528\u7ec4\u5408\uff0c\u5c11\u7528\u7ee7\u627f<\/strong>\u3002\u4f7f\u7528\u7ec4\u5408\u6765\u5efa\u7acb\u7cfb\u7edf\u5177\u6709\u66f4\u5927\u7684\u5f39\u6027\uff0c\u4e0d\u4ec5\u53ef\u5c06\u7b97\u6cd5\u65cf\u5c01\u88c5\u6210\u7c7b\uff0c\u66f4\u53ef\u4ee5\u201c\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u5730\u6539\u53d8\u884c\u4e3a\u201d\uff0c\u53ea\u8981\u7ec4\u5408\u7684\u884c\u4e3a\u5bf9\u8c61\u7b26\u5408\u6b63\u786e\u7684\u63a5\u53e3\u6807\u51c6\u5373\u53ef\u3002\u5bf9\u5e94\u201c\u7b56\u7565\u6a21\u5f0f\u201d<\/p>\n<p>\u7ec4\u5408(composition)\u548c\u59d4\u6258(delegation)\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u5177\u6709\u7ee7\u627f\u884c\u4e3a\u7684\u6548\u679c\u3002\u5229\u7528\u4e00\u822c\u7ee7\u627f\u8bbe\u8ba1\u5b50\u7c7b\u7684\u884c\u4e3a\uff0c\u662f\u5728\u7f16\u8bd1\u65f6\u9759\u6001\u51b3\u5b9a\u7684\uff0c\u800c\u4e14\u6240\u6709\u7684\u5b50\u7c7b\u90fd\u4f1a\u7ee7\u627f\u5230\u76f8\u540c\u7684\u884c\u4e3a\u3002\u7136\u800c\u5982\u679c\u80fd\u591f\u5229\u7528\u7ec4\u5408\u7684\u505a\u6cd5\u6269\u5c55\u5bf9\u8c61\u7684\u884c\u4e3a\uff0c\u5c31\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u5730\u6269\u5c55\u3002\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u6b64\u6280\u5de7\u628a\u591a\u4e2a\u65b0\u804c\u8d23\uff0c\u751a\u81f3\u662f\u8bbe\u8ba1\u8d85\u7c7b\u65f6\u6ca1\u6709\u60f3\u5230\u7684\u804c\u8d23\u52a0\u5728\u5bf9\u8c61\u8eab\u4e0a\u3002\u800c\u4e14\uff0c\u53ef\u4ee5\u4e0d\u7528\u4fee\u6539\u539f\u6765\u7684\u4ee3\u7801\u3002\u901a\u8fc7\u52a8\u6001\u5730\u7ec4\u5408\u5bf9\u8c61\uff0c\u53ef\u4ee5\u5199\u65b0\u7684\u4ee3\u7801\u3001\u6dfb\u52a0\u65b0\u7684\u529f\u80fd\uff0c\u800c\u65e0\u987b\u4fee\u6539\u73b0\u6709\u4ee3\u7801\u3002\u65e2\u7136\u6ca1\u6709\u6539\u53d8\u73b0\u6709\u4ee3\u7801\uff0c\u90a3\u4e48<span style=\"text-decoration: underline;\">\u5f15\u8fdbBUG\u6216\u4ea7\u751f\u610f\u5916\u526f\u4f5c\u7528\u7684\u673a\u4f1a\u5c06\u5927\u5e45\u5ea6\u51cf\u5c11<\/span>\u3002<\/p>\n<p><strong>\u9488\u5bf9\u63a5\u53e3\u7f16\u7a0b\uff0c\u4e0d\u9488\u5bf9\u5b9e\u73b0\u7f16\u7a0b<\/strong>\uff08\u201c\u63a5\u53e3\u201d\u662f\u4e00\u4e2a\u6982\u5ff5\uff0c\u5e76\u4e0d\u7279\u6307java\u91cc\u9762\u7684interface\uff0c\u56e0\u4e3a\u6709\u65f6\u7c7b\u4e5f\u53ef\u4ee5\u4f5c\u201c\u63a5\u53e3\u201d\u3002\u53e6\u5916\u56e0\u4e3aJAVA\u4e0d\u652f\u6301\u591a\u91cd\u7ee7\u627f\uff0c\u6240\u4ee5\u5b83\u8981\u53d8\u76f8\u9760\u201c\u63a5\u53e3\u201d\u6765\u5b9e\u73b0\uff1b\u6211\u770bGoF\u90a3\u672c\u4e66\u4e2d\uff0cC++\u4e2d\u8c8c\u4f3c\u5c31\u662f\u76f4\u63a5\u7528\u7c7b\u6765\u5b9e\u73b0\u201c\u63a5\u53e3\u201d\u7684\uff09<\/p>\n<p><strong>\u4e3a\u4ea4\u4e92\u5bf9\u8c61\u4e4b\u95f4\u7684\u677e\u8026\u5408\u8bbe\u8ba1\u800c\u52aa\u529b<\/strong>\u3002\u8fd9\u91cc\u9488\u5bf9\u6709\u201c\u4ea4\u4e92\u201d\u884c\u4e3a\u7684\u5bf9\u8c61\u95f4\uff0c\u5bf9\u5e94\u201c\u89c2\u5bdf\u8005\u6a21\u5f0f\u201d\u3002<\/p>\n<p><strong>\u7c7b\u5e94\u8be5\u5bf9\u6269\u5c55\u5f00\u653e\uff0c\u5bf9\u4fee\u6539\u5173\u95ed<\/strong>\u3002\u5bf9\u5e94\u201c\u88c5\u9970\u8005\u6a21\u5f0f\u201d\u3002\u8fd9\u4e00\u89c4\u5219\u4e00\u822c\u4e0d\u53ef\u80fd\u88ab\u767e\u5206\u4e4b\u767e\u9075\u5b88\uff0c\u4f46\u662f\u8fd9\u4e2a\u610f\u8bc6\u4f1a\u5e2e\u52a9\u4f60\u6743\u8861\u8981\u9047\u5230\u4ec0\u4e48\u6837\u7684\u56f0\u5883\u624d\u503c\u5f97\u53bb\u6253\u7834\u539f\u5219\u3002<\/p>\n<p><strong>\u4f9d\u8d56\u62bd\u8c61\uff0c\u800c\u4e0d\u8981\u4f9d\u8d56\u5177\u4f53\u7c7b<\/strong>\u3002\u201c\u4f9d\u8d56\u5012\u7f6e\u539f\u5219\u201d(Dependency Inversion 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