{"id":858,"date":"2026-03-24T20:49:47","date_gmt":"2026-03-24T20:49:47","guid":{"rendered":"https:\/\/www.visualize-ai.com\/cn\/building-scalable-systems-polymorphism-inheritance\/"},"modified":"2026-03-24T20:49:47","modified_gmt":"2026-03-24T20:49:47","slug":"building-scalable-systems-polymorphism-inheritance","status":"publish","type":"post","link":"https:\/\/www.visualize-ai.com\/cn\/building-scalable-systems-polymorphism-inheritance\/","title":{"rendered":"\u6784\u5efa\u53ef\u6269\u5c55\u7cfb\u7edf\uff1a\u591a\u6001\u6027\u548c\u7ee7\u627f\u7684\u529b\u91cf"},"content":{"rendered":"<p>\u5728\u8f6f\u4ef6\u5de5\u7a0b\u7684\u9886\u57df\u4e2d\uff0c\u7cfb\u7edf\u7684\u67b6\u6784\u5f80\u5f80\u51b3\u5b9a\u4e86\u5176\u5bff\u547d\u3002\u968f\u7740\u5e94\u7528\u7a0b\u5e8f\u53d8\u5f97\u8d8a\u6765\u8d8a\u590d\u6742\uff0c\u4ee3\u7801\u5e93\u5fc5\u987b\u4e0d\u65ad\u6f14\u8fdb\uff0c\u800c\u4e0d\u4f1a\u56e0\u81ea\u8eab\u8d1f\u62c5\u8fc7\u91cd\u800c\u5d29\u6e83\u3002\u9762\u5411\u5bf9\u8c61\u7684\u5206\u6790\u4e0e\u8bbe\u8ba1\u63d0\u4f9b\u4e86\u4e00\u4e2a\u57fa\u7840\u6846\u67b6\uff0c\u7528\u4e8e\u7ba1\u7406\u8fd9\u79cd\u590d\u6742\u6027\u3002\u5728\u8fd9\u4e2a\u6846\u67b6\u4e2d\uff0c\u6709\u4e24\u4e2a\u652f\u67f1\u56e0\u5176\u4fc3\u8fdb\u7cfb\u7edf\u6210\u957f\u7684\u80fd\u529b\u800c\u5c24\u4e3a\u7a81\u51fa\uff1a\u7ee7\u627f\u548c\u591a\u6001\u6027\u3002\u8fd9\u4e9b\u673a\u5236\u4f7f\u5f00\u53d1\u8005\u80fd\u591f\u6784\u5efa\u7684\u7cfb\u7edf\u4e0d\u4ec5\u4eca\u5929\u80fd\u591f\u6b63\u5e38\u8fd0\u884c\uff0c\u800c\u4e14\u80fd\u591f\u9002\u5e94\u672a\u6765\u7684\u9700\u8981\u3002<\/p>\n<p>\u5728\u8bbe\u8ba1\u53ef\u6269\u5c55\u89e3\u51b3\u65b9\u6848\u65f6\uff0c\u76ee\u6807\u662f\u5c3d\u91cf\u964d\u4f4e\u53d8\u66f4\u7684\u6210\u672c\u3002\u6bcf\u4e00\u4e2a\u65b0\u529f\u80fd\u6216\u9700\u6c42\u90fd\u5e94\u65e0\u7f1d\u5730\u878d\u5165\u73b0\u6709\u7ed3\u6784\u4e2d\u3002\u8fd9\u79cd\u96c6\u6210\u5728\u5f88\u5927\u7a0b\u5ea6\u4e0a\u4f9d\u8d56\u4e8e\u7c7b\u4e4b\u95f4\u7684\u5173\u7cfb\u4ee5\u53ca\u884c\u4e3a\u7684\u5206\u53d1\u65b9\u5f0f\u3002\u901a\u8fc7\u5229\u7528\u7ee7\u627f\uff0c\u6211\u4eec\u5efa\u7acb\u8d77\u6e05\u6670\u7684\u5c42\u6b21\u7ed3\u6784\u548c\u5171\u4eab\u884c\u4e3a\u3002\u901a\u8fc7\u591a\u6001\u6027\uff0c\u6211\u4eec\u786e\u4fdd\u4e0d\u540c\u7ec4\u4ef6\u80fd\u591f\u76f8\u4e92\u4ea4\u4e92\uff0c\u800c\u65e0\u9700\u4e86\u89e3\u5f7c\u6b64\u7684\u5177\u4f53\u7ec6\u8282\u3002\u4e24\u8005\u7ed3\u5408\uff0c\u5f62\u6210\u4e86\u4e00\u79cd\u7a33\u5065\u7684\u7b56\u7565\uff0c\u4ee5\u4fdd\u6301\u7cfb\u7edf\u7684\u53ef\u6269\u5c55\u6027\u5e76\u51cf\u5c11\u6280\u672f\u503a\u52a1\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Chalkboard-style educational infographic explaining polymorphism and inheritance in software engineering: visual diagrams show class hierarchies, interface-based polymorphism, Open\/Closed Principle benefits, common pitfalls to avoid, and best-practice decision table for building scalable, maintainable systems\" decoding=\"async\" src=\"https:\/\/www.visualize-ai.com\/wp-content\/uploads\/2026\/03\/polymorphism-inheritance-scalable-systems-chalkboard-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\u7406\u89e3\u7ee7\u627f\uff1a\u53ef\u91cd\u7528\u6027\u7684\u57fa\u7840 \ud83d\udd17<\/h2>\n<p>\u7ee7\u627f\u662f\u4e00\u79cd\u673a\u5236\uff0c\u901a\u8fc7\u5b83\u4e00\u4e2a\u7c7b\u53ef\u4ee5\u83b7\u53d6\u53e6\u4e00\u4e2a\u7c7b\u7684\u5c5e\u6027\u548c\u884c\u4e3a\u3002\u8fd9\u79cd\u5173\u7cfb\u901a\u5e38\u88ab\u63cf\u8ff0\u4e3a\u4e00\u79cd<strong>\u662f-\u4e00\u79cd<\/strong>\u5173\u7cfb\u3002\u5982\u679c\u4e00\u4e2a<code>\u8f66\u8f86<\/code>\u662f\u4e00\u79cd<code>\u8fd0\u8f93\u5de5\u5177<\/code>\uff0c\u90a3\u4e48<code>\u8f66\u8f86<\/code>\u4ece<code>\u8fd0\u8f93\u5de5\u5177<\/code>\u4e2d\u7ee7\u627f\u80fd\u529b\u3002\u8fd9\u4e00\u6982\u5ff5\u662f\u903b\u8f91\u7ec4\u7ec7\u4ee3\u7801\u7684\u57fa\u7840\u3002<\/p>\n<h3>\u7c7b\u5c42\u6b21\u7ed3\u6784\u7684\u673a\u5236<\/h3>\n<p>\u4ece\u6839\u672c\u4e0a\u8bf4\uff0c\u7ee7\u627f\u5141\u8bb8\u4ee3\u7801\u91cd\u7528\u3002\u4e0e\u5176\u5728\u591a\u4e2a\u7c7b\u4e2d\u91cd\u590d\u903b\u8f91\uff0c\u4e0d\u5982\u5c06\u901a\u7528\u529f\u80fd\u5b9a\u4e49\u5728\u7236\u7c7b\u4e2d\uff0c\u5b50\u7c7b\u518d\u6269\u5c55\u8fd9\u4e9b\u529f\u80fd\u3002\u8fd9\u79cd\u65b9\u6cd5\u5177\u6709\u51e0\u4e2a\u663e\u8457\u7684\u4f18\u52bf\uff1a<\/p>\n<ul>\n<li>\n<p><strong>DRY\u539f\u5219\uff1a<\/strong> \u4e0d\u91cd\u590d\u539f\u5219\u81ea\u7136\u5f97\u5230\u652f\u6301\u3002\u901a\u7528\u65b9\u6cd5\u4f4d\u4e8e\u8d85\u7c7b\u4e2d\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4e00\u81f4\u6027\uff1a<\/strong> \u6240\u6709\u5b50\u7c7b\u90fd\u9075\u5faa\u7531\u7236\u7c7b\u5b9a\u4e49\u7684\u6807\u51c6\u63a5\u53e3\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u62bd\u8c61\uff1a<\/strong> \u7236\u7c7b\u53ef\u4ee5\u5b9a\u4e49\u62bd\u8c61\u65b9\u6cd5\uff0c\u5f3a\u5236\u5b50\u7c7b\u5b9e\u73b0\u7279\u5b9a\u884c\u4e3a\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u8bbe\u60f3\u4e00\u4e2a\u4f60\u6b63\u5728\u6784\u5efa\u901a\u77e5\u7cfb\u7edf\u7684\u60c5\u666f\u3002\u4f60\u53ef\u80fd\u4f1a\u6709\u4e00\u4e2a\u57fa\u7c7b\u6765\u8868\u793a\u901a\u7528\u6d88\u606f\u3002\u50cf\u7535\u5b50\u90ae\u4ef6\u3001\u77ed\u4fe1\u548c\u63a8\u9001\u901a\u77e5\u8fd9\u6837\u7684\u5177\u4f53\u7c7b\u578b\u5c06\u4ece\u8fd9\u4e2a\u57fa\u7c7b\u7ee7\u627f\u3002\u57fa\u7c7b\u8d1f\u8d23\u65f6\u95f4\u6233\u7684\u683c\u5f0f\u5316\u548c\u6295\u9012\u5c1d\u8bd5\u7684\u65e5\u5fd7\u8bb0\u5f55\u3002\u5b50\u7c7b\u5219\u8d1f\u8d23\u5177\u4f53\u7684\u4f20\u8f93\u903b\u8f91\u3002<\/p>\n<h3>\u62bd\u8c61\u5c42\u6b21<\/h3>\n<p>\u6709\u6548\u7684\u7ee7\u627f\u9700\u8981\u5bf9\u62bd\u8c61\u5c42\u6b21\u8fdb\u884c\u4ed4\u7ec6\u89c4\u5212\u3002\u8fc7\u6df1\u7684\u5c42\u6b21\u7ed3\u6784\u53ef\u80fd\u4f1a\u53d8\u5f97\u96be\u4ee5\u7ef4\u62a4\u3002\u9664\u975e\u6709\u660e\u786e\u7684\u7279\u6b8a\u5316\u9700\u6c42\uff0c\u5426\u5219\u6700\u597d\u4fdd\u6301\u5c42\u6b21\u7ed3\u6784\u6241\u5e73\u5316\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u5177\u4f53\u7c7b\uff1a<\/strong> \u8fd9\u4e9b\u7c7b\u5b9e\u73b0\u4e86\u6240\u6709\u65b9\u6cd5\uff0c\u53ef\u4ee5\u88ab\u76f4\u63a5\u5b9e\u4f8b\u5316\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u62bd\u8c61\u7c7b\uff1a<\/strong> \u8fd9\u4e9b\u7c7b\u53ef\u80fd\u5305\u542b\u4e0d\u5b8c\u6574\u7684\u5b9e\u73b0\uff0c\u4e14\u4e0d\u80fd\u88ab\u5b9e\u4f8b\u5316\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u63a5\u53e3\uff1a<\/strong> \u8fd9\u4e9b\u5b9a\u4e49\u4e86\u884c\u4e3a\u7684\u5951\u7ea6\uff0c\u800c\u4e0d\u63d0\u4f9b\u5b9e\u73b0\u7ec6\u8282\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u5728\u8bbe\u8ba1\u8fd9\u4e9b\u5c42\u7ea7\u65f6\uff0c\u8981\u95ee\u4e00\u4e0b\u5b50\u7c7b\u662f\u5426\u771f\u6b63\u4ee3\u8868\u4e86\u7236\u7c7b\u7684\u7279\u5316\u7248\u672c\u3002\u5982\u679c\u5173\u7cfb\u8f83\u5f31\uff0c\u7ec4\u5408\u53ef\u80fd\u6bd4\u7ee7\u627f\u662f\u66f4\u597d\u7684\u9009\u62e9\u3002<\/p>\n<h2>\u591a\u6001\u6027\uff1a\u901a\u8fc7\u53ef\u66ff\u6362\u6027\u5b9e\u73b0\u7075\u6d3b\u6027 \ud83d\udd04<\/h2>\n<p>\u591a\u6001\u6027\u5141\u8bb8\u5bf9\u8c61\u88ab\u89c6\u4e3a\u5176\u7236\u7c7b\u7684\u5b9e\u4f8b\uff0c\u800c\u4e0d\u662f\u5b83\u4eec\u7684\u5b9e\u9645\u7c7b\u3002\u8fd9\u4f7f\u5f97\u4ee3\u7801\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u901a\u7528\u63a5\u53e3\u5bf9\u4e0d\u540c\u7c7b\u578b\u7684\u5bf9\u8c61\u8fdb\u884c\u64cd\u4f5c\u3002\u8fd9\u4e2a\u8bcd\u6e90\u81ea\u5e0c\u814a\u8bed\uff0c\u610f\u601d\u662f<strong>\u591a\u79cd\u5f62\u6001<\/strong>.<\/p>\n<h3>\u9759\u6001\u591a\u6001\u6027\u4e0e\u52a8\u6001\u591a\u6001\u6027<\/h3>\n<p>\u591a\u6001\u6027\u5728\u7a0b\u5e8f\u751f\u547d\u5468\u671f\u7684\u4e0d\u540c\u9636\u6bb5\u4ee5\u4e0d\u540c\u65b9\u5f0f\u8868\u73b0\u3002\u7406\u89e3\u8fd9\u79cd\u533a\u522b\u5bf9\u4e8e\u7cfb\u7edf\u8bbe\u8ba1\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u7f16\u8bd1\u65f6\u591a\u6001\u6027\uff1a<\/strong> \u4e5f\u79f0\u4e3a\u65b9\u6cd5\u91cd\u8f7d\u3002\u591a\u4e2a\u65b9\u6cd5\u5171\u4eab\u76f8\u540c\u540d\u79f0\uff0c\u4f46\u53c2\u6570\u5217\u8868\u4e0d\u540c\u3002\u7f16\u8bd1\u5668\u6839\u636e\u63d0\u4f9b\u7684\u53c2\u6570\u51b3\u5b9a\u8c03\u7528\u54ea\u4e2a\u65b9\u6cd5\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8fd0\u884c\u65f6\u591a\u6001\u6027\uff1a<\/strong> \u4e5f\u79f0\u4e3a\u52a8\u6001\u5206\u6d3e\u3002\u8981\u6267\u884c\u7684\u65b9\u6cd5\u5728\u8fd0\u884c\u65f6\u6839\u636e\u5b9e\u9645\u5bf9\u8c61\u7c7b\u578b\u786e\u5b9a\u3002\u8fd9\u662f\u53ef\u6269\u5c55\u7cfb\u7edf\u4e2d\u7075\u6d3b\u6027\u7684\u4e3b\u8981\u9a71\u52a8\u529b\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>\u63a5\u53e3\u4e00\u81f4\u6027\u7684\u529b\u91cf<\/h3>\n<p>\u5f53\u6b63\u786e\u5e94\u7528\u591a\u6001\u6027\u65f6\uff0c\u5ba2\u6237\u7aef\u4ee3\u7801\u4e0d\u9700\u8981\u77e5\u9053\u5b83\u6b63\u5728\u5904\u7406\u7684\u5bf9\u8c61\u7684\u5177\u4f53\u7c7b\u578b\u3002\u5b83\u53ea\u9700\u8981\u77e5\u9053\u63a5\u53e3\u3002\u8fd9\u4f7f\u5f97\u5ba2\u6237\u7aef\u4e0e\u5b9e\u73b0\u7ec6\u8282\u89e3\u8026\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u4e00\u4e2a\u5904\u7406\u7ba1\u9053\u53ef\u80fd\u63a5\u53d7\u4e00\u4e2a<code>\u5904\u7406\u5668<\/code>\u5bf9\u8c61\u7684\u6d41\u3002\u8be5\u7ba1\u9053\u4e0d\u5173\u5fc3\u5bf9\u8c61\u662f<code>\u6587\u672c\u5904\u7406\u5668<\/code>\u8fd8\u662f<code>\u56fe\u50cf\u5904\u7406\u5668<\/code>\u3002\u5b83\u53ea\u9700\u5bf9\u6d41\u4e2d\u7684\u6bcf\u4e2a\u9879\u76ee\u8c03\u7528<code>process()<\/code>\u65b9\u6cd5\u3002\u8fd9\u4f7f\u5f97\u53ef\u4ee5\u5728\u4e0d\u4fee\u6539\u7ba1\u9053\u903b\u8f91\u7684\u60c5\u51b5\u4e0b\u5411\u7cfb\u7edf\u4e2d\u6dfb\u52a0\u65b0\u7684\u5904\u7406\u5668\u3002<\/p>\n<h2>\u7ed3\u5408\u7ee7\u627f\u4e0e\u591a\u6001\u6027\u4ee5\u5b9e\u73b0\u53ef\u6269\u5c55\u6027 \ud83d\ude80<\/h2>\n<p>\u5355\u72ec\u4f7f\u7528\u8fd9\u4e9b\u6982\u5ff5\u7684\u6548\u679c\u4e0d\u5982\u5c06\u5b83\u4eec\u7ed3\u5408\u4f7f\u7528\u3002\u8fd9\u79cd\u7ed3\u5408\u521b\u9020\u4e86\u4e00\u4e2a\u65e2\u6a21\u5757\u5316\u53c8\u53ef\u6269\u5c55\u7684\u7cfb\u7edf\u3002\u8fd9\u79cd\u534f\u540c\u6548\u5e94\u901a\u5e38\u662f\u65e0\u9700\u91cd\u6784\u6838\u5fc3\u7ec4\u4ef6\u5373\u53ef\u5e94\u5bf9\u589e\u957f\u7684\u5173\u952e\u3002<\/p>\n<h3>\u65e0\u9700\u4fee\u6539\u7684\u53ef\u6269\u5c55\u6027<\/h3>\n<p>\u57fa\u4e8e\u8fd9\u4e9b\u539f\u5219\u6784\u5efa\u7684\u7cfb\u7edf\u9075\u5faa\u5f00\u95ed\u539f\u5219\u3002\u5b83\u5bf9\u6269\u5c55\u5f00\u653e\uff0c\u5bf9\u4fee\u6539\u5173\u95ed\u3002\u5f53\u51fa\u73b0\u65b0\u9700\u6c42\u65f6\uff0c\u4f60\u53ea\u9700\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b50\u7c7b\u6216\u5b9e\u73b0\u3002\u4f60\u65e0\u9700\u4fee\u6539\u6d88\u8d39\u8fd9\u4e9b\u5bf9\u8c61\u7684\u73b0\u6709\u4ee3\u7801\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u65b0\u529f\u80fd\uff1a<\/strong> \u6dfb\u52a0\u4e00\u4e2a\u4ece\u57fa\u7c7b\u7ee7\u627f\u7684\u65b0\u5b50\u7c7b\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u884c\u4e3a\u53d8\u66f4\uff1a<\/strong> \u5728\u65b0\u7c7b\u4e2d\u91cd\u5199\u7279\u5b9a\u65b9\u6cd5\u3002<\/p>\n<\/li>\n<li>\n<p><strong> \u96c6\u6210\uff1a<\/strong> \u7531\u4e8e\u591a\u6001\u6027\uff0c\u73b0\u6709\u903b\u8f91\u4f1a\u81ea\u52a8\u652f\u6301\u65b0\u7c7b\u3002<\/p>\n<\/li>\n<\/ul>\n<h3> \u89e3\u8026\u903b\u8f91<\/h3>\n<p> \u591a\u6001\u6027\u964d\u4f4e\u4e86\u7ec4\u4ef6\u4e4b\u95f4\u7684\u8026\u5408\u5ea6\u3002\u4f9d\u8d56\u5173\u7cfb\u57fa\u4e8e\u62bd\u8c61\uff0c\u800c\u975e\u5177\u4f53\u5b9e\u73b0\u3002\u8fd9\u4f7f\u5f97\u6d4b\u8bd5\u66f4\u5bb9\u6613\uff0c\u5e76\u5141\u8bb8\u7cfb\u7edf\u4e2d\u7684\u5404\u4e2a\u90e8\u5206\u72ec\u7acb\u66ff\u6362\u3002<\/p>\n<p> \u5728\u53ef\u6269\u5c55\u7684\u67b6\u6784\u4e2d\uff0c\u7ec4\u4ef6\u5fc5\u987b\u662f\u53ef\u66ff\u6362\u7684\u3002\u5982\u679c\u67d0\u79cd\u7279\u5b9a\u7684\u6570\u636e\u5e93\u7b56\u7565\u53d8\u5f97\u8fc7\u4e8e\u7f13\u6162\uff0c\u53ef\u4ee5\u5728\u4e0d\u91cd\u5199\u4e0e\u6570\u636e\u5c42\u4ea4\u4e92\u7684\u4e1a\u52a1\u903b\u8f91\u7684\u60c5\u51b5\u4e0b\u6ce8\u5165\u65b0\u7684\u5b9e\u73b0\u3002\u8fd9\u662f\u56e0\u4e3a\u4e1a\u52a1\u903b\u8f91\u4e0e\u63a5\u53e3\u4ea4\u4e92\uff0c\u800c\u975e\u5177\u4f53\u7c7b\u3002<\/p>\n<h2> \u5e38\u89c1\u9677\u9631\u4e0e\u53cd\u6a21\u5f0f \u26a0\ufe0f<\/h2>\n<p> \u5c3d\u7ba1\u8fd9\u4e9b\u539f\u5219\u529f\u80fd\u5f3a\u5927\uff0c\u4f46\u53ef\u80fd\u88ab\u8bef\u7528\u3002\u5e94\u7528\u4e0d\u5f53\u4f1a\u5bfc\u81f4\u4ee3\u7801\u8106\u5f31\uff0c\u6bd4\u6ca1\u6709\u4f7f\u7528\u8fd9\u4e9b\u539f\u5219\u7684\u4ee3\u7801\u66f4\u96be\u7ef4\u62a4\u3002\u610f\u8bc6\u5230\u8fd9\u4e9b\u9677\u9631\u5bf9\u4e8e\u7f16\u5199\u5065\u58ee\u7684\u7cfb\u7edf\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h3>\u8106\u5f31\u7684\u57fa\u7c7b\u95ee\u9898<\/h3>\n<p> \u5bf9\u57fa\u7c7b\u6240\u505a\u7684\u66f4\u6539\u53ef\u80fd\u4f1a\u610f\u5916\u5730\u7834\u574f\u5b50\u7c7b\u3002\u5982\u679c\u7236\u7c7b\u4f9d\u8d56\u4e8e\u5b50\u7c7b\u5047\u8bbe\u5b58\u5728\u7684\u5185\u90e8\u72b6\u6001\uff0c\u4fee\u6539\u7236\u7c7b\u53ef\u80fd\u4f1a\u7834\u574f\u5b50\u7c7b\u3002\u4e3a\u7f13\u89e3\u6b64\u95ee\u9898\uff0c\u5e94\u4fdd\u6301\u57fa\u7c7b\u7a33\u5b9a\uff0c\u5e76\u5c3d\u91cf\u51cf\u5c11\u5b83\u4eec\u5bf9\u5b50\u7c7b\u65bd\u52a0\u7684\u4f9d\u8d56\u3002<\/p>\n<h3>\u8fc7\u6df1\u7684\u7ee7\u627f\u5c42\u6b21<\/h3>\n<p> \u521b\u5efa\u8fc7\u957f\u7684\u7ee7\u627f\u94fe\u4f1a\u4f7f\u4ee3\u7801\u96be\u4ee5\u7406\u89e3\u3002\u8c03\u8bd5\u8de8\u8d8a\u5341\u5c42\u7684\u8c03\u7528\u94fe\u6548\u7387\u4f4e\u4e0b\u3002\u5e94\u5c06\u6700\u5927\u6df1\u5ea6\u63a7\u5236\u5728\u4e24\u5230\u4e09\u5c42\u3002\u5982\u679c\u4f60\u53d1\u73b0\u81ea\u5df1\u6b63\u5728\u6784\u5efa\u66f4\u6df1\u7684\u5c42\u6b21\u7ed3\u6784\uff0c\u5e94\u8003\u8651\u5c06\u5171\u540c\u884c\u4e3a\u63d0\u53d6\u5230\u72ec\u7acb\u7684\u6df7\u5165\uff08mixin\uff09\u6216\u7ec4\u5408\u4e2d\u3002<\/p>\n<h3>\u901a\u8fc7\u7ee7\u627f\u9020\u6210\u7684\u7d27\u8026\u5408<\/h3>\n<p> \u7ee7\u627f\u5728\u7236\u7c7b\u548c\u5b50\u7c7b\u4e4b\u95f4\u5efa\u7acb\u4e86\u7d27\u5bc6\u7684\u8054\u7cfb\u3002\u5982\u679c\u7236\u7c7b\u53d1\u751f\u91cd\u5927\u53d8\u5316\uff0c\u5b50\u7c7b\u4e5f\u5fc5\u987b\u968f\u4e4b\u6539\u53d8\u3002\u8fd9\u8fdd\u80cc\u4e86\u677e\u8026\u5408\u7684\u521d\u8877\u3002\u5728\u8bb8\u591a\u60c5\u51b5\u4e0b\uff0c\u7ec4\u5408\u662f\u66f4\u4f18\u7684\u66ff\u4ee3\u65b9\u6848\u3002\u7ec4\u5408\u5141\u8bb8\u5728\u8fd0\u884c\u65f6\u6dfb\u52a0\u6216\u79fb\u9664\u884c\u4e3a\uff0c\u800c\u7ee7\u627f\u5219\u5728\u7f16\u8bd1\u65f6\u5c31\u5df2\u56fa\u5b9a\u3002<\/p>\n<h2>\u5b9e\u73b0\u7684\u6700\u4f73\u5b9e\u8df5 \ud83d\udccb<\/h2>\n<p> \u4e3a\u786e\u4fdd\u7cfb\u7edf\u4fdd\u6301\u53ef\u6269\u5c55\u6027\uff0c\u5728\u5e94\u7528\u8fd9\u4e9b\u539f\u5219\u65f6\u5e94\u9075\u5faa\u4e00\u7ec4\u6307\u5bfc\u65b9\u9488\u3002\u4e0b\u8868\u6982\u8ff0\u4e86\u5404\u79cd\u573a\u666f\u4e0b\u7684\u63a8\u8350\u505a\u6cd5\u3002<\/p>\n<table style=\"min-width: 75px;\">\n<colgroup>\n<col style=\"min-width: 25px;\"\/>\n<col style=\"min-width: 25px;\"\/>\n<col style=\"min-width: 25px;\"\/><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u573a\u666f<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u63a8\u8350\u65b9\u6cd5<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u7406\u7531<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5728\u65e0\u5173\u7c7b\u4e4b\u95f4\u5171\u4eab\u884c\u4e3a<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u63a5\u53e3\u6216\u6df7\u5165<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u907f\u514d\u5728\u4e0d\u5b58\u5728\u7236\u5b50\u5173\u7cfb\u7684\u60c5\u51b5\u4e0b\u5f3a\u5236\u5efa\u7acb\u8fd9\u79cd\u5173\u7cfb\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6838\u5fc3\u6982\u5ff5\u7684\u7279\u5316<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u7ee7\u627f<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u660e\u786e\u7684 <strong>\u662f-\u4e00\u79cd<\/strong> \u5173\u7cfb\u53ef\u4ee5\u8bc1\u660e\u8fd9\u79cd\u5c42\u6b21\u7ed3\u6784\u7684\u5408\u7406\u6027\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u53ef\u66ff\u6362\u7684\u7b97\u6cd5<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u901a\u8fc7\u63a5\u53e3\u5b9e\u73b0\u591a\u6001\u6027<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5141\u8bb8\u7b97\u6cd5\u66f4\u6539\u800c\u4e0d\u5f71\u54cd\u8c03\u7528\u8005\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u590d\u6742\u5bf9\u8c61\u7684\u6784\u5efa<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u7ec4\u5408<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4e0e\u6df1\u5c42\u7ee7\u627f\u6811\u76f8\u6bd4\uff0c\u964d\u4f4e\u4e86\u590d\u6742\u6027\u3002<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u901a\u7528\u7684\u9a8c\u8bc1\u903b\u8f91<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u62bd\u8c61\u57fa\u7c7b<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5728\u5141\u8bb8\u7279\u5b9a\u9a8c\u8bc1\u89c4\u5219\u7684\u540c\u65f6\uff0c\u5f3a\u5236\u6267\u884c\u7ed3\u6784\u3002<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u8bbe\u8ba1\u7684\u6218\u7565\u89c4\u5212 \ud83d\udee0\ufe0f<\/h2>\n<p>\u7f16\u5199\u4ee3\u7801\u4e4b\u524d\uff0c\u5148\u89c4\u5212\u7ed3\u6784\u3002\u53ef\u89c6\u5316\u5c42\u6b21\u7ed3\u6784\u6709\u52a9\u4e8e\u53ca\u65e9\u53d1\u73b0\u6f5c\u5728\u95ee\u9898\u3002\u4f7f\u7528\u56fe\u8868\u6765\u63cf\u7ed8\u7c7b\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/p>\n<h3>\u9010\u6b65\u8bbe\u8ba1\u6d41\u7a0b<\/h3>\n<ul>\n<li>\n<p><strong>\u8bc6\u522b\u6838\u5fc3\u5b9e\u4f53\uff1a<\/strong> \u4f60\u7684\u9886\u57df\u4e2d\u7684\u4e3b\u8981\u5bf9\u8c61\u662f\u4ec0\u4e48\uff1f\u5217\u51fa\u5b83\u4eec\u7684\u5c5e\u6027\u548c\u884c\u4e3a\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u786e\u5b9a\u5173\u7cfb\uff1a<\/strong> \u662f\u5426\u6709\u4efb\u4f55\u5b9e\u4f53\u5171\u4eab\u5171\u540c\u7684\u884c\u4e3a\uff1f\u662f\u5426\u6709\u4efb\u4f55\u5b9e\u4f53\u662f\u5176\u4ed6\u5b9e\u4f53\u7684\u7279\u6b8a\u7248\u672c\uff1f<\/p>\n<\/li>\n<li>\n<p><strong>\u5b9a\u4e49\u63a5\u53e3\uff1a<\/strong> \u8fd9\u4e9b\u5b9e\u4f53\u5fc5\u987b\u5c65\u884c\u54ea\u4e9b\u5951\u7ea6\uff1f\u5b9a\u4e49\u4ea4\u4e92\u6240\u9700\u7684\u65b9\u6cd5\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u91cd\u6784\u91cd\u590d\u7684\u903b\u8f91\uff1a<\/strong> \u5c06\u901a\u7528\u4ee3\u7801\u79fb\u5165\u7236\u7c7b\u6216\u5de5\u5177\u6a21\u5757\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u9a8c\u8bc1\u53ef\u66ff\u6362\u6027\uff1a<\/strong> \u786e\u4fdd\u4efb\u4f55\u5b50\u7c7b\u90fd\u53ef\u4ee5\u66ff\u4ee3\u7236\u7c7b\u800c\u4e0d\u4f1a\u7834\u574f\u529f\u80fd\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u73b0\u5b9e\u4e16\u754c\u7684\u5e94\u7528\u573a\u666f \ud83d\udca1<\/h2>\n<p>\u4e3a\u4e86\u5145\u5206\u7406\u89e3\u8fd9\u4e9b\u6982\u5ff5\u7684\u5f71\u54cd\uff0c\u8bf7\u8003\u8651\u5b83\u4eec\u5982\u4f55\u5e94\u7528\u4e8e\u5177\u4f53\u7684\u67b6\u6784\u6311\u6218\u3002<\/p>\n<h3>\u4e8b\u4ef6\u9a71\u52a8\u67b6\u6784<\/h3>\n<p>\u5728\u4e8b\u4ef6\u9a71\u52a8\u7cfb\u7edf\u4e2d\uff0c\u5404\u79cd\u7c7b\u578b\u7684\u4e8b\u4ef6\u4f1a\u89e6\u53d1\u4e0d\u540c\u7684\u5904\u7406\u7a0b\u5e8f\u3002\u591a\u6001\u6027\u4f7f\u5f97\u4e2d\u592e\u8c03\u5ea6\u5668\u80fd\u591f\u7edf\u4e00\u5904\u7406\u6240\u6709\u4e8b\u4ef6\u3002\u8c03\u5ea6\u5668\u8c03\u7528\u4e8b\u4ef6\u5bf9\u8c61\u4e0a\u7684 <code>handle()<\/code> 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