{"id":1974,"date":"2026-03-21T04:39:15","date_gmt":"2026-03-21T04:39:15","guid":{"rendered":"https:\/\/www.tech-posts.com\/cn\/polymorphism-basics-without-confusion\/"},"modified":"2026-03-21T04:39:15","modified_gmt":"2026-03-21T04:39:15","slug":"polymorphism-basics-without-confusion","status":"publish","type":"post","link":"https:\/\/www.tech-posts.com\/cn\/polymorphism-basics-without-confusion\/","title":{"rendered":"OOAD\u6307\u5357\uff1a\u65e0\u9700\u56f0\u60d1\u7684\u591a\u6001\u6027\u57fa\u7840"},"content":{"rendered":"
\n
\"Kawaii-style<\/figure>\n<\/div>\n

\u7406\u89e3\u9762\u5411\u5bf9\u8c61\u8bbe\u8ba1\u9700\u8981\u638c\u63e1\u591a\u4e2a\u590d\u6742\u6982\u5ff5\uff0c\u4f46\u5f88\u5c11\u6709\u6982\u5ff5\u50cf\u591a\u6001\u6027\u90a3\u6837\u88ab\u8bef\u89e3\u3002\u5c3d\u7ba1\u5b83\u5e38\u88ab\u5b66\u672f\u672f\u8bed\u6240\u63a9\u76d6\uff0c\u4f46\u8fd9\u4e00\u539f\u5219\u5b9e\u9645\u4e0a\u662f\u521b\u5efa\u7075\u6d3b\u3001\u53ef\u7ef4\u62a4\u8f6f\u4ef6\u7cfb\u7edf\u6700\u5b9e\u7528\u7684\u5de5\u5177\u4e4b\u4e00\u3002\u672c\u6587\u5c06\u4e0d\u5e26\u56f0\u60d1\u5730\u89e3\u6790\u591a\u6001\u6027\u7684\u57fa\u7840\uff0c\u91cd\u70b9\u5728\u4e8e\u6e05\u6670\u7684\u5b9a\u4e49\u3001\u73b0\u5b9e\u4e16\u754c\u7684\u903b\u8f91\uff0c\u4ee5\u53ca\u9762\u5411\u5bf9\u8c61\u5206\u6790\u4e0e\u8bbe\u8ba1\u4e2d\u7684\u7ed3\u6784\u5b8c\u6574\u6027\u3002<\/p>\n

\u6211\u4eec\u5c06\u63a2\u8ba8\u8fd9\u4e00\u673a\u5236\u5982\u4f55\u4f7f\u5bf9\u8c61\u5bf9\u76f8\u540c\u7684\u6d88\u606f\u505a\u51fa\u4e0d\u540c\u7684\u54cd\u5e94\uff0c\u5b83\u4e3a\u4f55\u5bf9\u4ee3\u7801\u7684\u957f\u671f\u5065\u5eb7\u81f3\u5173\u91cd\u8981\uff0c\u4ee5\u53ca\u5982\u4f55\u5728\u4e0d\u8fc7\u5ea6\u8bbe\u8ba1\u67b6\u6784\u7684\u524d\u63d0\u4e0b\u6709\u6548\u5b9e\u73b0\u5b83\u3002\u8ba9\u6211\u4eec\u6df1\u5165\u63a2\u8ba8\u5176\u539f\u7406\u3002<\/p>\n

\u5b9a\u4e49\u6838\u5fc3\u6982\u5ff5 \ud83e\udde0<\/h2>\n

\u4ece\u6700\u7b80\u5355\u7684\u5c42\u9762\u6765\u8bf4\uff0c\u591a\u6001\u6027\u5141\u8bb8\u4e0d\u540c\u7c7b\u578b\u7684\u5bf9\u8c61\u88ab\u89c6\u4e3a\u4e00\u4e2a\u5171\u540c\u8d85\u7c7b\u578b\u7684\u5b9e\u4f8b\u3002\u8fd9\u4e2a\u8bcd\u672c\u8eab\u6e90\u81ea\u5e0c\u814a\u8bed\uff0c\u610f\u4e3a\u201c\u591a\u79cd\u5f62\u6001\u201d\u3002\u5728\u8f6f\u4ef6\u67b6\u6784\u7684\u8bed\u5883\u4e2d\uff0c\u8fd9\u610f\u5473\u7740\u4e00\u4e2a\u5355\u4e00\u63a5\u53e3\u53ef\u4ee5\u4ee3\u8868\u591a\u79cd\u5e95\u5c42\u5f62\u5f0f\u6216\u6570\u636e\u7c7b\u578b\u3002<\/p>\n

\u8bbe\u60f3\u4e00\u4e2a\u7ba1\u7406\u7cfb\u7edf\u4e2d\u5404\u79cd\u5f62\u72b6\u7684\u573a\u666f\u3002\u4f60\u53ef\u80fd\u4f1a\u6709\u5706\u5f62\u3001\u65b9\u5f62\u548c\u4e09\u89d2\u5f62\u3002\u5982\u679c\u9700\u8981\u8ba1\u7b97\u6bcf\u79cd\u5f62\u72b6\u7684\u9762\u79ef\uff0c\u591a\u6001\u6027\u5141\u8bb8\u4f60\u7f16\u5199\u4e00\u4e2a\u63a5\u53d7\u901a\u7528\u201c\u5f62\u72b6\u201d\u5bf9\u8c61\u7684\u51fd\u6570\u3002\u65e0\u8bba\u5177\u4f53\u5bf9\u8c61\u662f\u5706\u5f62\u8fd8\u662f\u65b9\u5f62\uff0c\u8be5\u51fd\u6570\u90fd\u80fd\u5728\u5185\u90e8\u8c03\u7528\u76f8\u5e94\u7684\u8ba1\u7b97\u65b9\u6cd5\uff0c\u800c\u65e0\u9700\u4e8b\u5148\u77e5\u9053\u5177\u4f53\u7684\u7c7b\u578b\u3002<\/p>\n

\u8fd9\u79cd\u65b9\u6cd5\u964d\u4f4e\u4e86\u8026\u5408\u5ea6\u3002\u4f60\u7684\u4ee3\u7801\u65e0\u9700\u4e86\u89e3\u6bcf\u79cd\u5f62\u72b6\u7684\u5177\u4f53\u5b9e\u73b0\u7ec6\u8282\u5373\u53ef\u5bf9\u5176\u6267\u884c\u64cd\u4f5c\uff0c\u53ea\u9700\u77e5\u9053\u8be5\u5bf9\u8c61\u9075\u5faa\u4e86\u9884\u671f\u7684\u63a5\u53e3\u5373\u53ef\u3002<\/p>\n

\u5173\u952e\u7279\u6027<\/h3>\n
    \n
  • \u7075\u6d3b\u6027\uff1a<\/strong>\u53ef\u4ee5\u65b0\u589e\u7c7b\u578b\uff0c\u800c\u65e0\u9700\u4fee\u6539\u4f7f\u7528\u57fa\u7840\u63a5\u53e3\u7684\u73b0\u6709\u4ee3\u7801\u3002<\/li>\n
  • \u53ef\u6269\u5c55\u6027\uff1a<\/strong>\u968f\u7740\u9700\u6c42\u7684\u53d8\u5316\uff0c\u7cfb\u7edf\u80fd\u591f\u81ea\u7136\u5730\u6269\u5c55\u3002<\/li>\n
  • \u62bd\u8c61\u6027\uff1a<\/strong>\u5b9e\u73b0\u7ec6\u8282\u88ab\u9690\u85cf\u5728\u7edf\u4e00\u7684\u63a5\u53e3\u4e4b\u540e\u3002<\/li>\n<\/ul>\n

    \u9759\u6001\u7ed1\u5b9a\u4e0e\u52a8\u6001\u7ed1\u5b9a \u2696\ufe0f<\/h2>\n

    \u8981\u771f\u6b63\u7406\u89e3\u591a\u6001\u6027\uff0c\u5fc5\u987b\u533a\u5206\u65b9\u6cd5\u8c03\u7528\u662f\u5982\u4f55\u88ab\u89e3\u6790\u7684\u3002\u8fd9\u4e00\u533a\u5206\u5bf9\u4e8e\u6027\u80fd\u548c\u884c\u4e3a\u9884\u6d4b\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

    1. \u7f16\u8bd1\u65f6\u591a\u6001\u6027\uff08\u9759\u6001\uff09<\/h3>\n

    \u5f53\u7a0b\u5e8f\u8fd0\u884c\u524d\uff0c\u7f16\u8bd1\u5668\u786e\u5b9a\u8981\u6267\u884c\u7684\u65b9\u6cd5\u65f6\uff0c\u5c31\u4f1a\u53d1\u751f\u8fd9\u79cd\u60c5\u51b5\u3002\u5b83\u4f9d\u8d56\u4e8e\u65b9\u6cd5\u7b7e\u540d\u3002<\/p>\n

      \n
    • \u65b9\u6cd5\u91cd\u8f7d\uff1a<\/strong>\u591a\u4e2a\u65b9\u6cd5\u5171\u4eab\u76f8\u540c\u540d\u79f0\uff0c\u4f46\u53c2\u6570\u5217\u8868\u4e0d\u540c\uff08\u53c2\u6570\u7684\u6570\u91cf\u6216\u7c7b\u578b\u4e0d\u540c\uff09\u3002<\/li>\n
    • \u64cd\u4f5c\u7b26\u91cd\u8f7d\uff1a<\/strong>\u64cd\u4f5c\u7b26\u88ab\u8d4b\u4e88\u7279\u5b9a\u7528\u6237\u5b9a\u4e49\u7c7b\u578b\u7684\u7279\u6b8a\u542b\u4e49\u3002<\/li>\n
    • \u89e3\u6790\uff1a<\/strong>\u7f16\u8bd1\u5668\u4f1a\u67e5\u770b\u53d8\u91cf\u7c7b\u578b\u548c\u63d0\u4f9b\u7684\u53c2\u6570\uff0c\u4ee5\u51b3\u5b9a\u8c03\u7528\u54ea\u4e2a\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n

      2. \u8fd0\u884c\u65f6\u591a\u6001\u6027\uff08\u52a8\u6001\uff09<\/h3>\n

      \u5f53\u7a0b\u5e8f\u8fd0\u884c\u65f6\u786e\u5b9a\u8981\u6267\u884c\u7684\u65b9\u6cd5\u65f6\uff0c\u5c31\u4f1a\u53d1\u751f\u8fd9\u79cd\u60c5\u51b5\u3002\u5b83\u4f9d\u8d56\u4e8e\u5b9e\u9645\u7684\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u5f15\u7528\u7c7b\u578b\u3002<\/p>\n

        \n
      • \u65b9\u6cd5\u91cd\u5199\uff1a<\/strong>\u5b50\u7c7b\u63d0\u4f9b\u5176\u7236\u7c7b\u4e2d\u5df2\u5b9a\u4e49\u65b9\u6cd5\u7684\u7279\u5b9a\u5b9e\u73b0\u3002<\/li>\n
      • \u52a8\u6001\u5206\u6d3e\uff1a<\/strong>\u865a\u62df\u673a\u6839\u636e\u5bf9\u8c61\u7684\u8fd0\u884c\u65f6\u7c7b\u578b\u6765\u89e3\u6790\u8c03\u7528\u3002<\/li>\n
      • \u89e3\u51b3\uff1a<\/strong> \u51b3\u7b56\u53ea\u6709\u5728\u4ee3\u7801\u6267\u884c\u65f6\u624d\u4f1a\u505a\u51fa\u3002<\/li>\n<\/ul>\n

        \u7406\u89e3\u8fd9\u4e24\u79cd\u7ed1\u5b9a\u65f6\u95f4\u4e4b\u95f4\u7684\u533a\u522b\u5bf9\u4e8e\u8c03\u8bd5\u548c\u6027\u80fd\u8c03\u4f18\u81f3\u5173\u91cd\u8981\u3002\u9759\u6001\u7ed1\u5b9a\u901a\u5e38\u66f4\u5feb\uff0c\u4f46\u52a8\u6001\u7ed1\u5b9a\u63d0\u4f9b\u4e86\u590d\u6742\u5bf9\u8c61\u5c42\u6b21\u7ed3\u6784\u6240\u9700\u7684\u7075\u6d3b\u6027\u3002<\/p>\n

        \u91cd\u8f7d vs \u91cd\u5199 \u2699\ufe0f<\/h2>\n

        \u8fd9\u4e9b\u672f\u8bed\u5e38\u88ab\u521d\u5b66\u8005\u4e92\u6362\u4f7f\u7528\uff0c\u4f46\u5728\u8bbe\u8ba1\u4e2d\u5b83\u4eec\u5177\u6709\u4e0d\u540c\u7684\u7528\u9014\u3002<\/p>\n\n\n\n\n\n\n\n\n\n
        \u7279\u6027<\/th>\n\u65b9\u6cd5\u91cd\u8f7d<\/th>\n\u65b9\u6cd5\u91cd\u5199<\/th>\n<\/tr>\n<\/thead>\n
        \u4f5c\u7528\u57df<\/strong><\/td>\n\u5728\u540c\u4e00\u7c7b\u4e2d<\/td>\n\u5728\u7236\u7c7b\u548c\u5b50\u7c7b\u4e4b\u95f4<\/td>\n<\/tr>\n
        \u53c2\u6570<\/strong><\/td>\n\u5fc5\u987b\u4e0d\u540c<\/td>\n\u5fc5\u987b\u76f8\u540c<\/td>\n<\/tr>\n
        \u7ed1\u5b9a\u65f6\u95f4<\/strong><\/td>\n\u7f16\u8bd1\u65f6<\/td>\n\u8fd0\u884c\u65f6<\/td>\n<\/tr>\n
        \u8fd4\u56de\u7c7b\u578b<\/strong><\/td>\n\u53ef\u4ee5\u4e0d\u540c<\/td>\n\u5fc5\u987b\u76f8\u540c\u6216\u534f\u53d8<\/td>\n<\/tr>\n
        \u4e3b\u8981\u7528\u9014<\/strong><\/td>\n\u65b9\u4fbf\u6027\uff0c\u76f8\u4f3c\u7684\u529f\u80fd<\/td>\n\u884c\u4e3a\u4fee\u6539\uff0c\u4e13\u4e1a\u5316<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u91cd\u8f7d\u5173\u4e4e\u4fbf\u5229\u6027\u3002\u5b83\u5141\u8bb8\u4f60\u5c06\u4e00\u4e2a\u65b9\u6cd5\u547d\u540d\u4e3a `calculate`\uff0c\u65e0\u8bba\u4f60\u662f\u4f20\u9012\u5355\u4e2a\u534a\u5f84\u8fd8\u662f\u5bbd\u5ea6\u548c\u9ad8\u5ea6\u3002\u91cd\u5199\u5173\u4e4e\u4e13\u4e1a\u5316\u3002\u5b83\u5141\u8bb8 `Vehicle` \u7c7b\u5b9a\u4e49\u4e00\u4e2a `move()` \u65b9\u6cd5\uff0c\u800c `Car` \u5b50\u7c7b\u91cd\u5199\u5b83\u4ee5\u5b9a\u4e49\u8f66\u8f6e\u5982\u4f55\u8f6c\u52a8\uff0c`Boat` \u5b50\u7c7b\u91cd\u5199\u5b83\u4ee5\u5b9a\u4e49\u87ba\u65cb\u6868\u5982\u4f55\u8f6c\u52a8\u3002<\/p>\n

        \u63a5\u53e3\u7684\u4f5c\u7528 \ud83d\udd17<\/h2>\n

        \u5728\u73b0\u4ee3\u8bbe\u8ba1\u4e2d\uff0c\u591a\u6001\u6027\u901a\u5e38\u901a\u8fc7\u63a5\u53e3\u800c\u975e\u4ec5\u901a\u8fc7\u7ee7\u627f\u6765\u5b9e\u73b0\u3002\u63a5\u53e3\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5951\u7ea6\u3002\u5b83\u6307\u5b9a\u4e86\u5bf9\u8c61\u5fc5\u987b\u5177\u5907\u54ea\u4e9b\u65b9\u6cd5\uff0c\u4f46\u4e0d\u89c4\u5b9a\u5b83\u4eec\u5982\u4f55\u5de5\u4f5c\u3002<\/p>\n

        \u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528\u63a5\u53e3\uff1f<\/h3>\n
          \n
        • \u677e\u8026\u5408\uff1a<\/strong> \u4ee3\u7801\u4f9d\u8d56\u4e8e\u63a5\u53e3\uff0c\u800c\u4e0d\u662f\u5177\u4f53\u7684\u5b9e\u73b0\u3002<\/li>\n
        • \u591a\u91cd\u7ee7\u627f\u6a21\u62df\uff1a<\/strong> \u4e00\u4e2a\u7c7b\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\uff0c\u4ece\u800c\u5b9e\u73b0\u591a\u91cd\u7c7b\u578b\u7ee7\u627f\u3002<\/li>\n
        • \u6d4b\u8bd5\uff1a<\/strong> \u63a5\u53e3\u4f7f\u5f97\u4e3a\u5355\u5143\u6d4b\u8bd5\u521b\u5efa\u6a21\u62df\u5bf9\u8c61\u53d8\u5f97\u66f4\u52a0\u5bb9\u6613\u3002<\/li>\n<\/ul>\n

          \u5f53\u4f60\u6839\u636e\u63a5\u53e3\u7f16\u7a0b\u65f6\uff0c\u53ef\u4ee5\u786e\u4fdd\u4efb\u4f55\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u7c7b\u90fd\u53ef\u4ee5\u88ab\u66ff\u6362\u800c\u4e0d\u4f1a\u7834\u574f\u5176\u4f7f\u7528\u8005\u7684\u903b\u8f91\u3002\u8fd9\u5c31\u662f\u4f9d\u8d56\u5012\u7f6e\u539f\u5219\u7684\u7cbe\u9ad3\uff0c\u662f\u7a33\u5065\u8bbe\u8ba1\u7684\u57fa\u77f3\u3002<\/p>\n

          \u5229\u7528\u591a\u6001\u6027\u7684\u8bbe\u8ba1\u6a21\u5f0f \ud83c\udfd7\ufe0f<\/h2>\n

          \u8bb8\u591a\u5df2\u786e\u7acb\u7684\u8bbe\u8ba1\u6a21\u5f0f\u90fd\u9ad8\u5ea6\u4f9d\u8d56\u591a\u6001\u6027\u6765\u89e3\u51b3\u53cd\u590d\u51fa\u73b0\u7684\u95ee\u9898\u3002<\/p>\n

          1. \u7b56\u7565\u6a21\u5f0f<\/h3>\n

          \u8be5\u6a21\u5f0f\u5b9a\u4e49\u4e86\u4e00\u7ec4\u7b97\u6cd5\uff0c\u5c06\u6bcf\u4e2a\u7b97\u6cd5\u5c01\u88c5\u8d77\u6765\uff0c\u5e76\u4f7f\u5176\u53ef\u4e92\u6362\u3002\u5ba2\u6237\u7aef\u4ee3\u7801\u5728\u8fd0\u884c\u65f6\u9009\u62e9\u7279\u5b9a\u7684\u7b97\u6cd5\u3002<\/p>\n

            \n
          • \u793a\u4f8b\uff1a<\/strong> \u4e00\u4e2a\u652f\u4ed8\u5904\u7406\u5668\u53ef\u80fd\u63a5\u53d7\u4e00\u4e2a `PaymentStrategy` \u63a5\u53e3\u3002\u4f60\u53ef\u4ee5\u6839\u636e\u7528\u6237\u504f\u597d\u6ce8\u5165 `CreditCardStrategy` \u6216 `CryptoStrategy`\uff0c\u800c\u65e0\u9700\u66f4\u6539\u7ed3\u8d26\u903b\u8f91\u3002<\/li>\n<\/ul>\n

            2. \u5de5\u5382\u6a21\u5f0f<\/h3>\n

            \u5de5\u5382\u65b9\u6cd5\u5141\u8bb8\u4e00\u4e2a\u7c7b\u6839\u636e\u4e0a\u4e0b\u6587\u5b9e\u4f8b\u5316\u591a\u4e2a\u6d3e\u751f\u7c7b\u4e2d\u7684\u4e00\u4e2a\u3002\u8c03\u7528\u8005\u63a5\u6536\u4e00\u4e2a\u901a\u7528\u7c7b\u578b\uff0c\u4f46\u591a\u6001\u6027\u5904\u7406\u5177\u4f53\u7684\u521b\u5efa\u903b\u8f91\u3002<\/p>\n

            3. \u89c2\u5bdf\u8005\u6a21\u5f0f<\/h3>\n

            \u5f53\u4e00\u4e2a\u5bf9\u8c61\u72b6\u6001\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u5b83\u4f1a\u901a\u77e5\u4e00\u7ec4\u89c2\u5bdf\u8005\u3002\u4e3b\u9898\u5e76\u4e0d\u77e5\u9053\u89c2\u5bdf\u8005\u7684\u5177\u4f53\u7c7b\u578b\uff0c\u53ea\u77e5\u9053\u5b83\u5b9e\u73b0\u4e86 `notify` \u65b9\u6cd5\u3002<\/p>\n

            \u5e38\u89c1\u8bef\u89e3 \u274c<\/h2>\n

            \u56f4\u7ed5\u8fd9\u4e00\u6982\u5ff5\u5b58\u5728\u4e00\u4e9b\u8bef\u89e3\uff0c\u5e38\u5e38\u5bfc\u81f4\u7cdf\u7cd5\u7684\u8bbe\u8ba1\u51b3\u7b56\u3002<\/p>\n

              \n
            • \u8bef\u89e31\uff1a\u591a\u6001\u6027\u9700\u8981\u6df1\u5c42\u7684\u7ee7\u627f\u6811\u3002<\/strong>\n

              \u9519\u8bef\u3002\u5c3d\u7ba1\u7ee7\u627f\u662f\u4e00\u79cd\u5e38\u89c1\u65b9\u5f0f\uff0c\u4f46\u7ec4\u5408\u548c\u63a5\u53e3\u901a\u5e38\u80fd\u5728\u907f\u514d\u6df1\u5c42\u7ee7\u627f\u8106\u5f31\u6027\u7684\u540c\u65f6\u63d0\u4f9b\u66f4\u597d\u7684\u591a\u6001\u6027\u3002\u5e94\u4f18\u5148\u9009\u62e9\u7ec4\u5408\u800c\u975e\u7ee7\u627f\u3002<\/p>\n<\/li>\n

            • \u8bef\u89e32\uff1a\u5b83\u4f1a\u4f7f\u4ee3\u7801\u53d8\u6162\u3002<\/strong>\n

              \u4e0e\u76f4\u63a5\u65b9\u6cd5\u8c03\u7528\u76f8\u6bd4\uff0c\u52a8\u6001\u5206\u6d3e\u4f1a\u5e26\u6765\u5c11\u91cf\u5f00\u9500\u3002\u7136\u800c\uff0c\u73b0\u4ee3\u8fd0\u884c\u65f6\u4f18\u5316\u901a\u5e38\u80fd\u7f13\u89e3\u8fd9\u4e00\u95ee\u9898\u3002\u53ef\u7ef4\u62a4\u6027\u7684\u4f18\u52bf\u901a\u5e38\u8fdc\u8d85\u8fc7\u5fae\u4f18\u5316\u7684\u6210\u672c\u3002<\/p>\n<\/li>\n

            • \u8bef\u89e33\uff1a\u6bcf\u4e2a\u7c7b\u90fd\u5e94\u652f\u6301\u5b83\u3002<\/strong>\n

              \u9519\u8bef\u3002\u5e76\u975e\u6bcf\u4e2a\u7c7b\u90fd\u9700\u8981\u5177\u5907\u591a\u6001\u6027\u3002\u4ec5\u5728\u884c\u4e3a\u56e0\u7c7b\u578b\u800c\u5f02\u65f6\u624d\u4f7f\u7528\u5b83\u3002\u5982\u679c\u6240\u6709\u5b9e\u4f8b\u884c\u4e3a\u5b8c\u5168\u76f8\u540c\uff0c\u591a\u6001\u6027\u53ea\u4f1a\u589e\u52a0\u4e0d\u5fc5\u8981\u7684\u590d\u6742\u6027\u3002<\/p>\n<\/li>\n<\/ul>\n

              \u4f55\u65f6\u5e94\u907f\u514d\u4f7f\u7528\u5b83 \ud83d\uded1<\/h2>\n

              \u5c3d\u7ba1\u529f\u80fd\u5f3a\u5927\uff0c\u591a\u6001\u6027\u5e76\u975e\u4e07\u80fd\u89e3\u51b3\u65b9\u6848\u3002\u968f\u610f\u6ee5\u7528\u53ef\u80fd\u5bfc\u81f4\u201c\u610f\u5927\u5229\u9762\u5f0f\u4ee3\u7801\u201d\uff0c\u4f7f\u5f97\u6267\u884c\u6d41\u7a0b\u96be\u4ee5\u8ffd\u8e2a\u3002<\/p>\n

              \u4f60\u5e94\u8be5\u505c\u6b62\u7684\u8ff9\u8c61<\/h3>\n
                \n
              • \u8fc7\u5ea6\u7c7b\u578b\u68c0\u67e5\uff1a<\/strong> \u5982\u679c\u4f60\u7684\u4ee3\u7801\u5728\u591a\u6001\u5757\u4e2d\u4f7f\u7528\u4e86 `if (type == \u2018X\u2019)`\uff0c\u90a3\u4e48\u4f60\u5f88\u53ef\u80fd\u5df2\u7ecf\u7834\u574f\u4e86\u591a\u6001\u6027\u3002<\/li>\n
              • \u590d\u6742\u6027\u4e0e\u6e05\u6670\u6027\uff1a<\/strong> \u5982\u679c\u4e00\u4e2a\u7b80\u5355\u7684\u6d41\u7a0b\u5c31\u8db3\u591f\u4e86\uff0c\u5c31\u4e0d\u8981\u6784\u5efa\u63a5\u53e3\u5c42\u6b21\u7ed3\u6784\u3002<\/li>\n
              • \u5b9e\u73b0\u6cc4\u6f0f\uff1a<\/strong> \u5982\u679c\u57fa\u7c7b\u5bf9\u6d3e\u751f\u7c7b\u4e86\u89e3\u592a\u591a\uff0c\u62bd\u8c61\u5c31\u4f1a\u6cc4\u9732\u3002<\/li>\n<\/ul>\n

                \u5b9e\u73b0\u7684\u6700\u4f73\u5b9e\u8df5 \u2705<\/h2>\n

                \u4e3a\u4e86\u6709\u6548\u5b9e\u73b0\u591a\u6001\u6027\uff0c\u8bf7\u9075\u5faa\u4ee5\u4e0b\u51c6\u5219\u3002<\/p>\n

                1. \u503e\u5411\u4e8e\u4f7f\u7528\u62bd\u8c61<\/h3>\n

                \u56f4\u7ed5\u7c7b\u6240\u63d0\u4f9b\u7684\u884c\u4e3a\u6765\u8bbe\u8ba1\u4f60\u7684\u7c7b\uff0c\u800c\u4e0d\u662f\u5b83\u4eec\u6240\u5b58\u50a8\u7684\u6570\u636e\u3002\u63a5\u53e3\u5e94\u8868\u793a\u89d2\u8272\uff08\u4f8b\u5982 `Readable`\u3001`Writable`\uff09\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u7c7b\u522b\uff08\u4f8b\u5982 `File`\u3001`NetworkStream`\uff09\u3002<\/p>\n

                2. \u4fdd\u6301\u63a5\u53e3\u5c0f\u5de7<\/h3>\n

                \u9075\u5faa\u63a5\u53e3\u9694\u79bb\u539f\u5219\u3002\u8fc7\u5927\u7684\u63a5\u53e3\u4f1a\u8feb\u4f7f\u5b9e\u73b0\u5305\u542b\u5b83\u4eec\u4e0d\u9700\u8981\u7684\u65b9\u6cd5\u3002\u5c0f\u5de7\u4e14\u4e13\u6ce8\u7684\u63a5\u53e3\u4f7f\u591a\u6001\u6027\u66f4\u5bb9\u6613\u7ba1\u7406\u3002<\/p>\n

                3. \u4f7f\u7528\u62bd\u8c61\u7c7b\u6765\u5171\u4eab\u4ee3\u7801<\/h3>\n

                \u5982\u679c\u591a\u4e2a\u5b50\u7c7b\u5171\u4eab\u5b9e\u73b0\u7ec6\u8282\uff0c\u62bd\u8c61\u57fa\u7c7b\u53ef\u4ee5\u5bb9\u7eb3\u8fd9\u4e9b\u903b\u8f91\u3002\u5982\u679c\u5b83\u4eec\u4ec5\u5171\u4eab\u7b7e\u540d\uff0c\u5219\u4f7f\u7528\u63a5\u53e3\u3002<\/p>\n

                4. \u6587\u6863\u8bb0\u5f55\u884c\u4e3a\uff0c\u800c\u975e\u673a\u5236<\/h3>\n

                \u5b9a\u4e49\u591a\u6001\u63a5\u53e3\u65f6\uff0c\u5e94\u8bb0\u5f55\u9884\u671f\u7684\u884c\u4e3a\u548c\u4e0d\u53d8\u6027\u3002\u4e0d\u8981\u8bb0\u5f55\u5185\u90e8\u7b97\u6cd5\uff0c\u56e0\u4e3a\u90a3\u662f\u5b9e\u73b0\u7ec6\u8282\u3002<\/p>\n

                \u5b9e\u9645\u793a\u4f8b\uff1a\u4e00\u4e2a\u901a\u77e5\u7cfb\u7edf \ud83d\udce9<\/h2>\n

                \u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u901a\u77e5\u7cfb\u7edf\u7684\u6982\u5ff5\u6027\u793a\u4f8b\u3002\u6211\u4eec\u5e0c\u671b\u901a\u8fc7\u7535\u5b50\u90ae\u4ef6\u3001\u77ed\u4fe1\u548c\u63a8\u9001\u53d1\u9001\u901a\u77e5\u3002<\/p>\n

                \u63a5\u53e3\uff1a<\/strong> `NotificationSender`\uff0c\u5305\u542b\u4e00\u4e2a\u65b9\u6cd5 `send(message, recipient)`\u3002<\/p>\n

                \u5b9e\u73b0\uff1a<\/strong><\/p>\n

                  \n
                • EmailSender\uff1a<\/strong> \u5b9e\u73b0 `send` \u65b9\u6cd5\uff0c\u7528\u4e8e\u683c\u5f0f\u5316\u7535\u5b50\u90ae\u4ef6\u5e76\u901a\u8fc7\u90ae\u4ef6\u670d\u52a1\u5668\u53d1\u9001\u3002<\/li>\n
                • SMSSender\uff1a<\/strong> \u5b9e\u73b0 `send` \u65b9\u6cd5\uff0c\u7528\u4e8e\u683c\u5f0f\u5316\u6587\u672c\u6d88\u606f\u5e76\u901a\u8fc7\u7f51\u5173\u53d1\u9001\u3002<\/li>\n
                • PushSender\uff1a<\/strong> \u5b9e\u73b0 `send` \u65b9\u6cd5\uff0c\u7528\u4e8e\u63a8\u9001\u5230\u8bbe\u5907\u4ee4\u724c\u3002<\/li>\n<\/ul>\n

                  \u5ba2\u6237\u7aef\uff1a<\/strong> `NotificationManager` \u63a5\u53d7\u4e00\u4e2a `NotificationSender` \u5bf9\u8c61\u3002\u5b83\u8c03\u7528 `send()` \u65b9\u6cd5\uff0c\u800c\u65e0\u9700\u77e5\u9053\u8fd9\u662f\u7535\u5b50\u90ae\u4ef6\u8fd8\u662f\u77ed\u4fe1\u3002<\/p>\n

                  \u5982\u679c\u6211\u4eec\u4ee5\u540e\u6dfb\u52a0\u4e00\u4e2a `SlackSender`\uff0c\u53ea\u9700\u521b\u5efa\u65b0\u7c7b\u5373\u53ef\u3002`NotificationManager` \u4e0d\u9700\u8981\u66f4\u6539\u3002\u8fd9\u5c31\u662f\u591a\u6001\u6027\u7684\u529b\u91cf\u6240\u5728\u3002\u5b83\u9694\u79bb\u4e86\u53d8\u66f4\u7684\u5f71\u54cd\u3002<\/p>\n

                  \u4e0e\u7ee7\u627f\u548c\u62bd\u8c61\u7684\u5173\u7cfb \ud83d\udd04<\/h2>\n

                  \u591a\u6001\u6027\u5e76\u975e\u5b64\u7acb\u5b58\u5728\u3002\u5b83\u4f9d\u8d56\u4e8e\u9762\u5411\u5bf9\u8c61\u8bbe\u8ba1\u7684\u53e6\u5916\u4e24\u4e2a\u652f\u67f1\uff1a\u7ee7\u627f\u548c\u62bd\u8c61\u3002<\/p>\n

                    \n
                  • \u7ee7\u627f\uff1a<\/strong> \u63d0\u4f9b\u4e86\u7ed3\u6784\u5c42\u6b21\u3002\u5b83\u5141\u8bb8\u5b50\u7c7b\u4ece\u7236\u7c7b\u7ee7\u627f\u72b6\u6001\u548c\u884c\u4e3a\u3002<\/li>\n
                  • \u62bd\u8c61\uff1a<\/strong> \u63d0\u4f9b\u63a5\u53e3\u3002\u5b83\u9690\u85cf\u4e86\u5b9e\u73b0\u7684\u590d\u6742\u6027\u3002<\/li>\n
                  • \u591a\u6001\u6027\uff1a<\/strong> \u63d0\u4f9b\u7075\u6d3b\u6027\u3002\u5b83\u5141\u8bb8\u63a5\u53e3\u4e0e\u4efb\u4f55\u6709\u6548\u7684\u5b9e\u73b0\u4e00\u8d77\u5de5\u4f5c\u3002<\/li>\n<\/ul>\n

                    \u6ca1\u6709\u62bd\u8c61\uff0c\u591a\u6001\u6027\u5c31\u53ea\u662f\u7ee7\u627f\u3002\u6ca1\u6709\u7ee7\u627f\uff0c\u591a\u6001\u6027\u5c31\u53ea\u662f\u9e2d\u5b50\u7c7b\u578b\u3002\u5b83\u4eec\u5171\u540c\u6784\u6210\u4e86\u7ba1\u7406\u590d\u6742\u6027\u7684\u5f3a\u5927\u6846\u67b6\u3002<\/p>\n

                    \u6027\u80fd\u8003\u8651 \u26a1<\/h2>\n

                    \u5728\u9ad8\u6027\u80fd\u8ba1\u7b97\u4e2d\uff0c\u865a\u65b9\u6cd5\u8c03\u7528\u7684\u5f00\u9500\u53ef\u80fd\u975e\u5e38\u663e\u8457\u3002\u7136\u800c\uff0c\u5728\u5927\u591a\u6570\u5e94\u7528\u7ea7\u5f00\u53d1\u4e2d\uff0c\u4e0eI\/O\u64cd\u4f5c\u6216\u6570\u636e\u5e93\u67e5\u8be2\u76f8\u6bd4\uff0c\u5176\u6210\u672c\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u3002<\/p>\n

                    \u5982\u679c\u6027\u80fd\u81f3\u5173\u91cd\u8981\uff0c\u8bf7\u8003\u8651\uff1a<\/p>\n

                      \n
                    • \u5185\u8054\uff1a<\/strong> \u67d0\u4e9b\u7f16\u8bd1\u5668\u53ef\u4ee5\u5728\u7f16\u8bd1\u65f6\u786e\u5b9a\u5177\u4f53\u7c7b\u578b\u7684\u60c5\u51b5\u4e0b\uff0c\u5c06\u865a\u65b9\u6cd5\u5185\u8054\u3002<\/li>\n
                    • \u9759\u6001\u5206\u6d3e\uff1a<\/strong> \u5728\u7c7b\u578b\u5728\u7f16\u8bd1\u65f6\u5df2\u77e5\u7684\u5730\u65b9\u4f7f\u7528\u6a21\u677f\u6216\u6cdb\u578b\u3002<\/li>\n
                    • \u6027\u80fd\u5206\u6790\uff1a<\/strong> \u4f18\u5316\u524d\u52a1\u5fc5\u5148\u6d4b\u91cf\u3002\u8fc7\u65e9\u4f18\u5316\u901a\u5e38\u4f1a\u7834\u574f\u8bbe\u8ba1\u3002<\/li>\n<\/ul>\n

                      \u8bbe\u8ba1\u5f71\u54cd\u603b\u7ed3 \ud83d\udcdd<\/h2>\n

                      \u91c7\u7528\u591a\u6001\u6027\u4f1a\u6539\u53d8\u4f60\u5bf9\u8f6f\u4ef6\u7684\u601d\u8003\u65b9\u5f0f\u3002\u5b83\u5c06\u5173\u6ce8\u70b9\u4ece\u201c\u8fd9\u4e2a\u7c7b\u662f\u5982\u4f55\u5de5\u4f5c\u7684\u201d\u8f6c\u79fb\u5230\u201c\u8fd9\u4e2a\u7c7b\u662f\u505a\u4ec0\u4e48\u7684\u201d\u3002\u8fd9\u79cd\u8f6c\u53d8\u5bf9\u4e8e\u6784\u5efa\u80fd\u591f\u7ecf\u53d7\u65f6\u95f4\u8003\u9a8c\u7684\u7cfb\u7edf\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

                      \u901a\u8fc7\u91c7\u7528\u591a\u6001\u6027\uff0c\u4f60\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u7ec4\u4ef6\u4e4b\u95f4\u677e\u6563\u8026\u5408\u4e14\u9ad8\u5ea6\u5185\u805a\u7684\u7cfb\u7edf\u3002\u4e00\u4e2a\u533a\u57df\u7684\u66f4\u6539\u4e0d\u4f1a\u5728\u4ee3\u7801\u5e93\u4e2d\u5f15\u53d1\u7834\u574f\u6027\u7684\u8fde\u9501\u53cd\u5e94\u3002\u65b0\u589e\u529f\u80fd\u5bf9\u73b0\u6709\u529f\u80fd\u7684\u5f71\u54cd\u6781\u5c0f\u3002<\/p>\n

                      \u4ece\u56f0\u60d1\u5230\u6e05\u6670\u7684\u65c5\u7a0b\uff0c\u5305\u542b\u7406\u89e3\u591a\u6001\u6027\u4e0d\u4ec5\u4ec5\u662f\u4e00\u79cd\u8bed\u8a00\u7279\u6027\uff0c\u66f4\u662f\u4e00\u79cd\u8bbe\u8ba1\u54f2\u5b66\u3002\u5b83\u9f13\u52b1\u4f60\u5728\u53d8\u5316\u53d1\u751f\u4e4b\u524d\u5c31\u505a\u597d\u89c4\u5212\u3002\u5b83\u8ba9\u4f60\u7684\u67b6\u6784\u4e3a\u672a\u6765\u505a\u597d\u51c6\u5907\u3002<\/p>\n

                      \u5b9e\u73b0\u65b9\u9762\u7684\u6700\u540e\u601d\u8003 \ud83d\ude80<\/h2>\n

                      \u4ece\u5c0f\u5904\u7740\u624b\u3002\u627e\u51fa\u4f60\u5728\u5f53\u524d\u9879\u76ee\u4e2d\u53cd\u590d\u7f16\u5199\u57fa\u4e8e\u7c7b\u578b\u68c0\u67e5\u7684`if-else`\u5757\u7684\u5730\u65b9\u3002\u5c06\u8fd9\u4e9b\u91cd\u6784\u4e3a\u591a\u6001\u5c42\u6b21\u7ed3\u6784\u3002\u89c2\u5bdf\u4ee3\u7801\u5982\u4f55\u53d8\u5f97\u66f4\u5bb9\u6613\u9605\u8bfb\u548c\u4fee\u6539\u3002<\/p>\n

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