{"id":21090,"date":"2025-04-19T04:12:02","date_gmt":"2025-04-18T20:12:02","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/21090.html"},"modified":"2025-04-19T04:12:02","modified_gmt":"2025-04-18T20:12:02","slug":"%e6%89%93%e9%80%a0%e5%9f%ba%e4%ba%8e%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%8f%8d%e6%8e%a8%e6%8a%80%e6%9c%af%e7%9a%84%e5%8d%b3%e6%97%b6%e8%81%8a%e5%a4%a9%e7%b3%bb%e7%bb%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/21090.html","title":{"rendered":"\u6253\u9020\u57fa\u4e8e\u670d\u52a1\u5668\u53cd\u63a8\u6280\u672f\u7684\u5373\u65f6\u804a\u5929\u7cfb\u7edf"},"content":{"rendered":"

\u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90，\u70b9\u51fb\u83b7\u53d6 \"menu-r.4af5f7ec.gif\"<\/p>\n

\u7b80\u4ecb：\u670d\u52a1\u5668\u53cd\u63a8\u6280\u672f\u662f\u5373\u65f6\u901a\u4fe1\u7684\u6838\u5fc3\u6280\u672f，\u5b83\u5141\u8bb8\u670d\u52a1\u5668\u4e3b\u52a8\u5411\u5ba2\u6237\u7aef\u63a8\u9001\u6570\u636e，\u5b9e\u73b0\u65e0\u9700\u5237\u65b0\u5373\u53ef\u5b9e\u65f6\u63a5\u6536\u6d88\u606f\u7684\u804a\u5929\u7cfb\u7edf\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5229\u7528DWR\u6846\u67b6\u5b9e\u73b0\u8fd9\u79cd\u6280\u672f，\u6db5\u76d6\u4eceDWR\u914d\u7f6e\u3001JavaBean\u6e90\u6587\u4ef6\u521b\u5efa\u3001\u670d\u52a1\u5668\u7aef\u804a\u5929\u670d\u52a1\u7f16\u5199\u5230\u5ba2\u6237\u7aef\u9875\u9762\u4ee3\u7801\u5b9e\u73b0\u7684\u5168\u8fc7\u7a0b，\u540c\u65f6\u4e5f\u5f3a\u8c03\u4e86\u5b9e\u65f6\u6d88\u606f\u63a8\u9001\u7684\u5b9e\u73b0\u7ec6\u8282，\u5305\u62ec\u4e8b\u4ef6\u76d1\u542c\u548c\u63a8\u9001\u673a\u5236\u3002\u5bf9\u4e8e\u5927\u89c4\u6a21\u7528\u6237\u7cfb\u7edf，\u6587\u7ae0\u8fd8\u63d0\u5230\u4e86\u9700\u8981\u8003\u8651\u7684\u9ad8\u7ea7\u8bdd\u9898，\u4f8b\u5982\u8d1f\u8f7d\u5747\u8861\u3001\u6d88\u606f\u961f\u5217\u4ee5\u53ca\u6027\u80fd\u4f18\u5316，\u4ee5\u53ca\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u7684\u5b89\u5168\u6027\u3001\u9519\u8bef\u5904\u7406\u548c\u8de8\u57df\u652f\u6301\u7b49\u95ee\u9898\u3002 \"\u670d\u52a1\u5668\u53cd\u63a8\u6280\u672f\u5b9e\u73b0\u5373\u65f6\u804a\u5929\u7cfb\u7edf\"<\/p>\n

1. \u670d\u52a1\u5668\u53cd\u63a8\u6280\u672f\u6982\u5ff5 <\/h2>\n

\u5728\u73b0\u4ee3Web\u5e94\u7528\u5f00\u53d1\u4e2d，\u670d\u52a1\u5668\u53cd\u63a8\u6280\u672f\u662f\u4e00\u79cd\u5141\u8bb8\u670d\u52a1\u5668\u4e3b\u52a8\u5411\u5ba2\u6237\u7aef\u63a8\u9001\u6570\u636e\u7684\u6280\u672f，\u8fd9\u5728\u6784\u5efa\u5b9e\u65f6\u4ea4\u4e92\u5f0f\u5e94\u7528\u65f6\u663e\u5f97\u5c24\u4e3a\u91cd\u8981\u3002\u672c\u7ae0\u5c06\u4ecb\u7ecd\u670d\u52a1\u5668\u53cd\u63a8\u6280\u672f\u7684\u57fa\u672c\u6982\u5ff5\u548c\u5176\u5728\u5373\u65f6\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u91cd\u8981\u6027，\u5e26\u9886\u8bfb\u8005\u521d\u6b65\u7406\u89e3\u8fd9\u4e00\u6280\u672f\u5982\u4f55\u5b9e\u73b0\u548c\u4f18\u5316\u3002 <\/p>\n

1.1 \u670d\u52a1\u5668\u53cd\u63a8\u6280\u672f\u6982\u8ff0 <\/h3>\n

\u670d\u52a1\u5668\u53cd\u63a8\u6280\u672f\u6d89\u53ca\u5728\u7f51\u7edc\u901a\u4fe1\u4e2d，\u7531\u670d\u52a1\u5668\u7aef\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u5373\u65f6\u66f4\u65b0\u7684\u6570\u636e，\u800c\u4e0d\u662f\u4f20\u7edf\u7684\u5ba2\u6237\u7aef\u5b9a\u65f6\u8bf7\u6c42\u66f4\u65b0\u3002\u8fd9\u4e00\u6280\u672f\u5927\u5927\u63d0\u9ad8\u4e86\u6570\u636e\u4ea4\u4e92\u7684\u5b9e\u65f6\u6027，\u4f7f\u5f97Web\u5e94\u7528\u80fd\u591f\u63d0\u4f9b\u4e0e\u684c\u9762\u5e94\u7528\u7c7b\u4f3c\u7684\u5373\u65f6\u4f53\u9a8c\u3002 <\/p>\n

1.2 \u53cd\u63a8\u6280\u672f\u7684\u5de5\u4f5c\u539f\u7406 <\/h3>\n

\u53cd\u63a8\u6280\u672f\u7684\u5b9e\u73b0\u901a\u5e38\u4f9d\u8d56\u4e8eWebSockets\u534f\u8bae\u6216HTTP\u957f\u8f6e\u8be2\u6280\u672f\u3002\u901a\u8fc7\u8fd9\u4e9b\u673a\u5236，\u670d\u52a1\u5668\u53ef\u4ee5\u5411\u5ba2\u6237\u7aef\u5b9e\u65f6\u63a8\u9001\u4fe1\u606f，\u800c\u65e0\u9700\u7b49\u5f85\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u3002\u8fd9\u5728\u6784\u5efa\u804a\u5929\u3001\u5b9e\u65f6\u901a\u77e5\u3001\u80a1\u7968\u4ea4\u6613\u7b49\u5e94\u7528\u4e2d\u975e\u5e38\u5173\u952e\u3002 <\/p>\n

1.3 \u53cd\u63a8\u6280\u672f\u7684\u4f18\u52bf\u4e0e\u6311\u6218 <\/h3>\n

\u8be5\u6280\u672f\u7684\u4f18\u52bf\u5728\u4e8e\u80fd\u591f\u5373\u65f6\u54cd\u5e94\u6570\u636e\u53d8\u5316，\u63d0\u9ad8\u7528\u6237\u4f53\u9a8c\u3002\u7136\u800c，\u5176\u6311\u6218\u5728\u4e8e\u9700\u8981\u5904\u7406\u7f51\u7edc\u5ef6\u8fdf\u3001\u670d\u52a1\u5668\u8d1f\u8f7d\u3001\u6570\u636e\u540c\u6b65\u7b49\u95ee\u9898\u3002\u5728\u63a5\u4e0b\u6765\u7684\u7ae0\u8282\u4e2d，\u6211\u4eec\u5c06\u8fdb\u4e00\u6b65\u63a2\u8ba8\u5982\u4f55\u514b\u670d\u8fd9\u4e9b\u6311\u6218\u5e76\u4f18\u5316\u53cd\u63a8\u6280\u672f\u7684\u5e94\u7528\u3002 <\/p>\n

2. DWR\u6846\u67b6\u7684\u5e94\u7528\u4e0e\u914d\u7f6e <\/h2>\n

2.1 DWR\u6846\u67b6\u6982\u8ff0 <\/h4>\n

2.1.1 DWR\u7684\u57fa\u672c\u6982\u5ff5 <\/h5>\n

DWR（Direct Web Remoting）\u662f\u4e00\u4e2a\u5f00\u6e90\u7684Java\u5e93，\u7528\u4e8e\u5141\u8bb8\u6d4f\u89c8\u5668（\u4f7f\u7528JavaScript）\u4e0e\u670d\u52a1\u5668\u7aef\u7684Java\u4ee3\u7801\u76f4\u63a5\u4ea4\u4e92\u3002DWR\u7684\u6838\u5fc3\u7406\u5ff5\u662f\u63d0\u4f9b\u4e00\u79cd\u7b80\u5355\u7684\u65b9\u6cd5，\u4f7f\u5f97JavaScript\u4ee3\u7801\u80fd\u591f\u76f4\u63a5\u8c03\u7528Java\u65b9\u6cd5，\u5c31\u50cf\u5b83\u4eec\u662f\u5728\u6d4f\u89c8\u5668\u4e2d\u672c\u5730\u5b9a\u4e49\u7684\u4e00\u6837\u3002\u8fd9\u51cf\u5c11\u4e86\u7f51\u7edc\u8bf7\u6c42\u7684\u590d\u6742\u6027，\u63d0\u5347\u4e86\u5f00\u53d1\u8005\u7684\u7f16\u7801\u6548\u7387，\u5e76\u4e14\u63d0\u4f9b\u4e86\u66f4\u6d41\u7545\u7684\u7528\u6237\u4f53\u9a8c\u3002 <\/p>\n

DWR\u901a\u8fc7\u4e00\u79cd\u79f0\u4e3aAJAX（Asynchronous JavaScript and XML）\u7684\u6280\u672f\u4e0e\u670d\u52a1\u5668\u8fdb\u884c\u901a\u4fe1，\u4f46DWR\u4e5f\u5bf9AJAX\u8fdb\u884c\u4e86\u5c01\u88c5，\u4f7f\u5f97\u5f00\u53d1\u8005\u53ef\u4ee5\u5ffd\u7565\u5f88\u591a\u5e95\u5c42\u7684\u7ec6\u8282\u3002DWR\u5c06AJAX\u7684\u590d\u6742\u6027\u62bd\u8c61\u5316，\u4f7f\u5f97\u5f00\u53d1\u8005\u80fd\u591f\u4e13\u6ce8\u4e8e\u4e1a\u52a1\u903b\u8f91，\u800c\u4e0d\u662f\u7ea0\u7ed3\u4e8e\u5982\u4f55\u5b9e\u73b0\u7ec6\u8282\u3002 <\/p>\n

2.1.2 DWR\u6846\u67b6\u7684\u5de5\u4f5c\u539f\u7406 <\/h5>\n

DWR\u7684\u5de5\u4f5c\u539f\u7406\u5206\u4e3a\u51e0\u4e2a\u4e3b\u8981\u6b65\u9aa4： <\/p>\n

  • \n

    \u670d\u52a1\u7aef\u66b4\u9732Java\u5bf9\u8c61： \u4f7f\u7528DWR\u7684\u6ce8\u89e3\u6216\u914d\u7f6e\u6587\u4ef6，\u5f00\u53d1\u8005\u53ef\u4ee5\u6307\u5b9a\u54ea\u4e9bJava\u5bf9\u8c61\u548c\u65b9\u6cd5\u53ef\u4ee5\u88ab\u8fdc\u7a0b\u8bbf\u95ee\u3002DWR\u751f\u6210JavaScript\u4ee3\u7406\u5bf9\u8c61，\u7528\u4e8e\u5728\u6d4f\u89c8\u5668\u7aef\u8c03\u7528\u8fd9\u4e9b\u65b9\u6cd5\u3002 <\/p>\n<\/li>\n

  • \n

    \u5ba2\u6237\u7aef\u4ee3\u7406\u8c03\u7528： \u6d4f\u89c8\u5668\u7aef\u7684JavaScript\u4ee3\u7801\u901a\u8fc7\u8fd9\u4e9b\u4ee3\u7406\u5bf9\u8c61\u8c03\u7528\u8fdc\u7a0bJava\u65b9\u6cd5，\u5c31\u50cf\u8c03\u7528\u672c\u5730JavaScript\u51fd\u6570\u4e00\u6837\u3002 <\/p>\n<\/li>\n

  • \n

    \u6570\u636e\u4f20\u8f93： \u901a\u8fc7HTTP\u534f\u8bae，\u6570\u636e\u5728\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u4e4b\u95f4\u8fdb\u884c\u4f20\u8f93\u3002DWR\u9ed8\u8ba4\u4f7f\u7528JSON\u683c\u5f0f\u8fdb\u884c\u6570\u636e\u5e8f\u5217\u5316，\u4f46\u5728\u914d\u7f6e\u4e0b\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u683c\u5f0f，\u5982XML\u3002 <\/p>\n<\/li>\n

  • \n

    \u670d\u52a1\u7aef\u6267\u884c\u548c\u54cd\u5e94： \u670d\u52a1\u7aef\u63a5\u6536\u5230\u8bf7\u6c42\u540e，\u6267\u884c\u76f8\u5e94\u7684Java\u65b9\u6cd5，\u5e76\u5c06\u7ed3\u679c\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002 <\/p>\n<\/li>\n

  • \n

    \u5ba2\u6237\u7aef\u5904\u7406\u54cd\u5e94： \u5ba2\u6237\u7aef\u63a5\u6536\u5230\u670d\u52a1\u7aef\u8fd4\u56de\u7684\u6570\u636e\u540e，\u6839\u636e\u9884\u5148\u5b9a\u4e49\u597d\u7684\u903b\u8f91\u5904\u7406\u8fd9\u4e9b\u6570\u636e，\u53ef\u80fd\u5305\u62ec\u66f4\u65b0\u9875\u9762\u5185\u5bb9\u6216\u89e6\u53d1\u4e8b\u4ef6\u7b49\u3002 <\/p>\n<\/li>\n

    DWR\u901a\u8fc7\u8fd9\u4e9b\u6b65\u9aa4，\u6709\u6548\u5730\u6865\u63a5\u4e86\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u4e4b\u95f4\u7684\u901a\u4fe1，\u4f7f\u5f97\u5f00\u53d1\u5f02\u6b65Web\u5e94\u7528\u53d8\u5f97\u66f4\u52a0\u5bb9\u6613\u3002 <\/p>\n

    2.2 DWR\u6846\u67b6\u7684\u914d\u7f6e\u4e0e\u96c6\u6210 <\/h4>\n

    2.2.1 DWR\u7684\u914d\u7f6e\u6587\u4ef6\u89e3\u6790 <\/h5>\n

    DWR\u7684\u914d\u7f6e\u53ef\u4ee5\u901a\u8fc7XML\u6587\u4ef6（\u901a\u5e38\u547d\u540d\u4e3a dwr.xml ）\u6765\u8fdb\u884c\u3002\u8fd9\u4e2a\u6587\u4ef6\u5b9a\u4e49\u4e86\u54ea\u4e9b\u7c7b\u548c\u65b9\u6cd5\u662f\u53ef\u4ee5\u88ab\u8fdc\u7a0b\u8bbf\u95ee\u7684，\u4ee5\u53ca\u5982\u4f55\u6620\u5c04\u5230JavaScript\u7684API\u3002\u914d\u7f6e\u6587\u4ef6\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u90e8\u5206： <\/p>\n

      \n
    • \u521b\u5efaJava\u7c7b\u7684\u4ee3\u7406： \u5b9a\u4e49\u54ea\u4e9bJava\u7c7b\u7684\u5b9e\u4f8b\u9700\u8981\u88ab\u66b4\u9732，\u4ee5\u53ca\u5b83\u4eec\u5728\u5ba2\u6237\u7aef\u5e94\u8be5\u5982\u4f55\u8868\u793a\u3002 <\/li>\n
    • \u5b89\u5168\u9650\u5236： \u8bbe\u7f6e\u54ea\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u88ab\u8fdc\u7a0b\u8c03\u7528，\u4ee5\u53ca\u662f\u5426\u5141\u8bb8\u65e0\u9650\u5236\u5730\u521b\u5efaJava\u5bf9\u8c61\u7684\u5b9e\u4f8b\u3002 <\/li>\n
    • \u8f6c\u6362\u5668\u7684\u914d\u7f6e： DWR\u4f7f\u7528\u8f6c\u6362\u5668\u5c06Java\u5bf9\u8c61\u8f6c\u6362\u6210JavaScript\u53ef\u64cd\u4f5c\u7684\u6570\u636e\u7ed3\u6784，\u914d\u7f6e\u6587\u4ef6\u4e2d\u53ef\u4ee5\u5b9a\u4e49\u548c\u5b9a\u5236\u8fd9\u4e9b\u8f6c\u6362\u5668\u3002 <\/li>\n
    • \u5f02\u5e38\u6620\u5c04： \u914d\u7f6e\u5982\u4f55\u5904\u7406\u548c\u4f20\u9012Java\u5f02\u5e38\u5230\u5ba2\u6237\u7aef\u3002 <\/li>\n<\/ul>\n

      \u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684 dwr.xml \u6587\u4ef6\u914d\u7f6e\u793a\u4f8b，\u5c55\u793a\u4e86\u5982\u4f55\u5c06\u4e00\u4e2aJava\u7c7b\u66b4\u9732\u7ed9\u5ba2\u6237\u7aef： <\/p>\n

      <configuration>
      \n <create creator="new" javascript="MyRemoteClass">
      \n <param name="class" value="com.example.MyRemoteClass"\/>
      \n <\/create>
      \n<\/configuration><\/p>\n

      \u8fd9\u4e2a\u914d\u7f6e\u7247\u6bb5\u6307\u793aDWR\u521b\u5efa com.example.MyRemoteClass \u7684\u4e00\u4e2a\u65b0\u5b9e\u4f8b，\u5e76\u5c06\u5176JavaScript\u4ee3\u7406\u547d\u540d\u4e3a MyRemoteClass \u3002 <\/p>\n

      2.2.2 DWR\u4e0eSpring\u7684\u96c6\u6210\u65b9\u6cd5 <\/h5>\n

      DWR\u4e0eSpring\u6846\u67b6\u7684\u96c6\u6210\u662f\u901a\u8fc7\u5728Spring\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u6dfb\u52a0\u7279\u5b9a\u7684bean\u5b9a\u4e49\u6765\u5b9e\u73b0\u7684\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f，\u53ef\u4ee5\u5c06Spring\u7684\u4f9d\u8d56\u6ce8\u5165\u548c\u58f0\u660e\u5f0f\u4e8b\u52a1\u7ba1\u7406\u7b49\u7279\u6027，\u4e0eDWR\u7684\u8fdc\u7a0b\u65b9\u6cd5\u8c03\u7528\u80fd\u529b\u7ed3\u5408\u4f7f\u7528\u3002 <\/p>\n

      \u5728Spring\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d，\u9700\u8981\u5b9a\u4e49\u4e00\u4e2aDWR access bean，\u5982\u4e0b\u6240\u793a： <\/p>\n

      <bean id="dwrAccess" class="org.dwr.xml.Configured \u0441\u0432\u043e\u0438\u043c\u0438 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430\u043c\u0438">
      \n <property name="scripts" value="WEB-INF\/dwr.xml"\/>
      \n <property name="allowGetForSafariButMakeSureItsSafe" value="true"\/>
      \n<\/bean><\/p>\n

      <bean id="dwrServlet" class="org.directwebremoting.servlet.DwrServlet">
      \n <init-param>
      \n <param-name>debug<\/param-name>
      \n <param-value>true<\/param-value>
      \n <\/init-param>
      \n <init-param>
      \n <param-name>access-Control-Allow-Origin<\/param-name>
      \n <param-value>*<\/param-value>
      \n <\/init-param>
      \n <init-param>
      \n <param-name>configLocation<\/param-name>
      \n <param-value>\/WEB-INF\/dwr.xml<\/param-value>
      \n <\/init-param>
      \n <load-on-startup>2<\/load-on-startup>
      \n<\/bean><\/p>\n

      \u8fd9\u4e2a\u914d\u7f6e\u7247\u6bb5\u5b9a\u4e49\u4e86DWR\u7684Servlet，\u5e76\u4e14\u6307\u5411\u4e86 dwr.xml \u914d\u7f6e\u6587\u4ef6\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f，\u5c31\u53ef\u4ee5\u5728Spring\u7ba1\u7406\u7684\u73af\u5883\u4e2d\u4f7f\u7528DWR\u8fdb\u884c\u8fdc\u7a0b\u65b9\u6cd5\u8c03\u7528\u3002 <\/p>\n

      \u96c6\u6210DWR\u548cSpring\u540e，\u53ef\u4ee5\u5229\u7528Spring\u5bb9\u5668\u7684\u7279\u6027\u6765\u7ba1\u7406\u548c\u6ce8\u5165\u4f9d\u8d56\u7684Java\u5bf9\u8c61\u3002\u8fd9\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u6a21\u5757\u5316，\u540c\u65f6\u4fbf\u4e8e\u6d4b\u8bd5\u548c\u7ef4\u62a4\u3002\u901a\u8fc7\u8fd9\u79cd\u96c6\u6210，DWR\u5728\u5904\u7406\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91\u65f6，\u80fd\u591f\u66f4\u597d\u5730\u5229\u7528Spring\u63d0\u4f9b\u7684\u5404\u79cd\u4f01\u4e1a\u7ea7\u7279\u6027\u3002 <\/p>\n

      3. JavaBean\u5bf9\u8c61\u5728\u5373\u65f6\u804a\u5929\u7cfb\u7edf\u4e2d\u7684\u4f7f\u7528 <\/h2>\n

      3.1 JavaBean\u7684\u5b9a\u4e49\u4e0e\u7279\u6027 <\/h3>\n

      3.1.1 JavaBean\u7684\u7ec4\u6210\u8981\u7d20 <\/h4>\n

      JavaBean\u662fJava\u8bed\u8a00\u4e2d\u4e00\u79cd\u7279\u6b8a\u7684\u7c7b，\u9075\u5faa\u7279\u5b9a\u7684\u7f16\u7801\u89c4\u8303\u3002\u8981\u6210\u4e3a\u4e00\u4e2aJavaBean，\u7c7b\u5fc5\u987b\u662f\u516c\u5171\u7684，\u5e76\u4e14\u5177\u6709\u4e00\u4e2a\u65e0\u53c2\u6784\u9020\u5668\u3002\u6b64\u5916，\u5b83\u7684\u5c5e\u6027（\u6210\u5458\u53d8\u91cf）\u90fd\u5e94\u8be5\u662f\u79c1\u6709\u7684，\u5e76\u4e14\u901a\u8fc7\u516c\u5171\u7684getter\u548csetter\u65b9\u6cd5\u8fdb\u884c\u8bbf\u95ee\u3002JavaBean\u7684\u4e3b\u8981\u76ee\u7684\u662f\u4f5c\u4e3a\u6570\u636e\u8f7d\u4f53\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f20\u8f93\u6570\u636e\u3002\u5b83\u652f\u6301Java\u7684\u5e8f\u5217\u5316\u673a\u5236，\u8fd9\u4f7f\u5f97JavaBean\u53ef\u4ee5\u5728\u7f51\u7edc\u4e0a\u4ee5\u4e8c\u8fdb\u5236\u5f62\u5f0f\u8fdb\u884c\u4f20\u8f93，\u4e5f\u53ef\u4ee5\u5b58\u50a8\u5230\u6587\u4ef6\u7cfb\u7edf\u6216\u6570\u636e\u5e93\u4e2d\u3002 <\/p>\n

      JavaBean\u7684\u7ec4\u6210\u8981\u7d20\u4e3b\u8981\u5305\u542b： – \u79c1\u6709\u5c5e\u6027 ：\u5b9a\u4e49\u4e86JavaBean\u7684\u5185\u90e8\u72b6\u6001，\u7528\u4e8e\u5b58\u50a8\u6570\u636e\u3002 – \u516c\u5171\u7684getter\u548csetter\u65b9\u6cd5 ：\u63d0\u4f9b\u4e86\u4e00\u79cd\u6807\u51c6\u7684\u65b9\u5f0f\u8bbf\u95ee\u548c\u4fee\u6539\u79c1\u6709\u5c5e\u6027\u3002 – \u65e0\u53c2\u6784\u9020\u5668 ：\u5141\u8bb8\u53cd\u5c04\u673a\u5236\u521b\u5efaJavaBean\u7684\u5b9e\u4f8b\u3002 – \u5b9e\u73b0Serializable\u63a5\u53e3 ：\u4f7f\u5f97JavaBean\u53ef\u4ee5\u88ab\u5e8f\u5217\u5316\u3002 <\/p>\n

      3.1.2 JavaBean\u7684\u751f\u547d\u5468\u671f\u7ba1\u7406 <\/h4>\n

      JavaBean\u7684\u751f\u547d\u5468\u671f\u662f\u6307JavaBean\u4ece\u521b\u5efa\u3001\u4f7f\u7528\u5230\u9500\u6bc1\u7684\u8fc7\u7a0b\u3002\u751f\u547d\u5468\u671f\u7684\u7ba1\u7406\u4e3b\u8981\u6d89\u53ca\u5230JavaBean\u7684\u521b\u5efa\u3001\u521d\u59cb\u5316\u3001\u4f7f\u7528\u548c\u5783\u573e\u56de\u6536\u3002 <\/p>\n

        \n
      • \u521b\u5efa ：\u901a\u8fc7\u65e0\u53c2\u6784\u9020\u5668\u521b\u5efaJavaBean\u5b9e\u4f8b\u3002 <\/li>\n
      • \u521d\u59cb\u5316 ：\u901a\u8fc7setter\u65b9\u6cd5\u6216\u6784\u9020\u5668\u6ce8\u5165，\u5c06\u6570\u636e\u521d\u59cb\u5316\u5230JavaBean\u5b9e\u4f8b\u4e2d\u3002 <\/li>\n
      • \u4f7f\u7528 ：\u901a\u8fc7getter\u65b9\u6cd5\u8bfb\u53d6\u5c5e\u6027，\u6216\u8005\u76f4\u63a5\u8c03\u7528\u5176\u4e1a\u52a1\u65b9\u6cd5\u3002 <\/li>\n
      • \u9500\u6bc1 ：\u5f53JavaBean\u4e0d\u518d\u88ab\u5f15\u7528\u65f6，\u7531\u5783\u573e\u56de\u6536\u673a\u5236\u81ea\u52a8\u5904\u7406\u3002 <\/li>\n<\/ul>\n

        \u5728\u5373\u65f6\u804a\u5929\u7cfb\u7edf\u4e2d，JavaBean\u53ef\u7528\u4e8e\u8868\u793a\u804a\u5929\u6d88\u606f\u3001\u7528\u6237\u72b6\u6001\u7b49\u5b9e\u4f53\u5bf9\u8c61\u3002\u4f8b\u5982，\u4e00\u4e2a\u804a\u5929\u6d88\u606f\u7684JavaBean\u53ef\u80fd\u5305\u542b\u53d1\u9001\u8005\u3001\u63a5\u6536\u8005\u3001\u6d88\u606f\u5185\u5bb9\u548c\u53d1\u9001\u65f6\u95f4\u7b49\u5c5e\u6027\u3002 <\/p>\n

        3.2 JavaBean\u5728\u5373\u65f6\u901a\u4fe1\u4e2d\u7684\u5e94\u7528\u5b9e\u4f8b <\/h3>\n

        3.2.1 \u6784\u5efa\u804a\u5929\u6d88\u606f\u6a21\u578b <\/h4>\n

        \u5728\u5373\u65f6\u804a\u5929\u7cfb\u7edf\u4e2d，\u6211\u4eec\u901a\u5e38\u4f1a\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a ChatMessage \u7684JavaBean\u6765\u8868\u793a\u4e00\u6761\u804a\u5929\u6d88\u606f\u3002\u8fd9\u4e2aJavaBean\u53ef\u80fd\u5305\u542b\u4ee5\u4e0b\u5c5e\u6027： <\/p>\n

        public class ChatMessage implements Serializable {
        \n private String sender;
        \n private String receiver;
        \n private String content;
        \n private Date timestamp;
        \n \/\/ … \u5176\u4ed6\u5c5e\u6027\u548c\u65b9\u6cd5
        \n}<\/p>\n

        \u5728\u8fd9\u4e2a\u7c7b\u4e2d， sender \u5c5e\u6027\u8868\u793a\u6d88\u606f\u7684\u53d1\u9001\u8005， receiver \u8868\u793a\u63a5\u6536\u8005， content \u8868\u793a\u6d88\u606f\u5185\u5bb9，\u800c timestamp \u8868\u793a\u6d88\u606f\u53d1\u9001\u7684\u65f6\u95f4\u6233\u3002 <\/p>\n

        \u8981\u521b\u5efa\u4e00\u4e2a ChatMessage \u5b9e\u4f8b，\u5e76\u8bbe\u7f6e\u76f8\u5173\u5c5e\u6027，\u53ef\u4ee5\u6309\u7167\u5982\u4e0b\u65b9\u5f0f\u64cd\u4f5c： <\/p>\n

        ChatMessage message = new ChatMessage();
        \nmessage.setSender("Alice");
        \nmessage.setReceiver("Bob");
        \nmessage.setContent("Hello there!");
        \nmessage.setTimestamp(new Date()); \/\/ \u5f53\u524d\u65f6\u95f4\u6233<\/p>\n

        3.2.2 JavaBean\u7684\u5e8f\u5217\u5316\u4e0e\u4f20\u8f93 <\/h4>\n

        JavaBean\u5728\u5373\u65f6\u804a\u5929\u7cfb\u7edf\u4e2d\u7684\u4f7f\u7528\u4e0d\u4ec5\u4ec5\u5c40\u9650\u4e8e\u5355\u4e2a\u5e94\u7528\u7684\u5185\u5b58\u4e2d，\u5b83\u4eec\u9700\u8981\u5728\u7f51\u7edc\u4e2d\u4f20\u8f93\u7ed9\u5176\u4ed6\u7528\u6237\u3002\u4e3a\u4e86\u80fd\u591f\u5728\u7f51\u7edc\u4e2d\u4f20\u8f93，JavaBean\u5fc5\u987b\u5b9e\u73b0 Serializable \u63a5\u53e3，\u8fd9\u6837Java\u7684\u5e8f\u5217\u5316\u673a\u5236\u5c31\u53ef\u4ee5\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u8282\u6d41，\u7136\u540e\u53ef\u4ee5\u88ab\u53d1\u9001\u5230\u7f51\u7edc\u4e0a\u6216\u8005\u5199\u5165\u6587\u4ef6\u7cfb\u7edf\u4e2d\u3002 <\/p>\n

        \/\/ JavaBean\u5e8f\u5217\u5316\u793a\u4f8b
        \ntry (ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("chatMessage.ser"))) {
        \n out.writeObject(message);
        \n} catch (IOException e) {
        \n e.printStackTrace();
        \n}<\/p>\n

        \u5728\u63a5\u6536\u7aef，\u53ef\u4ee5\u4f7f\u7528 ObjectInputStream \u5c06\u63a5\u6536\u5230\u7684\u5b57\u8282\u6d41\u53cd\u5e8f\u5217\u5316\u4e3a ChatMessage \u5bf9\u8c61： <\/p>\n

        \/\/ JavaBean\u53cd\u5e8f\u5217\u5316\u793a\u4f8b
        \ntry (ObjectInputStream in = new ObjectInputStream(new FileInputStream("chatMessage.ser"))) {
        \n ChatMessage receivedMessage = (ChatMessage) in.readObject();
        \n \/\/ \u4f7f\u7528\u63a5\u6536\u5230\u7684\u6d88\u606f\u5bf9\u8c61
        \n}<\/p>\n

        \u8fd9\u79cd\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u7684\u673a\u5236\u662f\u5373\u65f6\u804a\u5929\u7cfb\u7edf\u80fd\u591f\u8de8\u7f51\u7edc\u4f20\u8f93\u590d\u6742\u5bf9\u8c61\u7684\u57fa\u7840，\u4f7f\u5f97\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u53ef\u4ee5\u4f20\u9012\u4e30\u5bcc\u591a\u6837\u7684\u6570\u636e\u3002 <\/p>\n

        4. \u670d\u52a1\u5668\u7aef\u804a\u5929\u670d\u52a1\u7684\u6784\u5efa <\/h2>\n

        4.1 \u670d\u52a1\u5668\u7aef\u67b6\u6784\u8bbe\u8ba1 <\/h3>\n

        4.1.1 \u670d\u52a1\u7aef\u6838\u5fc3\u7ec4\u4ef6\u5206\u6790 <\/h4>\n

        \u670d\u52a1\u5668\u7aef\u804a\u5929\u670d\u52a1\u7684\u6784\u5efa\u662f\u5373\u65f6\u804a\u5929\u7cfb\u7edf\u7684\u6838\u5fc3\u90e8\u5206，\u5b83\u9700\u8981\u80fd\u591f\u9ad8\u6548\u7a33\u5b9a\u5730\u5904\u7406\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u5927\u91cf\u6d88\u606f\u3002\u670d\u52a1\u7aef\u901a\u5e38\u5305\u542b\u4ee5\u4e0b\u51e0\u4e2a\u6838\u5fc3\u7ec4\u4ef6： <\/p>\n

          \n
        • \u6d88\u606f\u961f\u5217（Message Queue） ：\u6d88\u606f\u961f\u5217\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u7f13\u51b2\u548c\u6392\u961f，\u5b83\u53ef\u4ee5\u5e73\u6ed1\u5904\u7406\u77ac\u65f6\u9ad8\u8d1f\u8f7d，\u4fdd\u8bc1\u6d88\u606f\u7684\u6709\u5e8f\u5904\u7406\u3002 <\/li>\n
        • \u6d88\u606f\u5904\u7406\u5668（Message Handler） ：\u6d88\u606f\u5904\u7406\u5668\u8d1f\u8d23\u89e3\u6790\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u6d88\u606f，\u5e76\u6267\u884c\u76f8\u5e94\u7684\u4e1a\u52a1\u903b\u8f91\u3002 <\/li>\n
        • \u7528\u6237\u7ba1\u7406\u5668（User Manager） ：\u8d1f\u8d23\u7ba1\u7406\u5728\u7ebf\u7528\u6237\u5217\u8868，\u5305\u62ec\u7528\u6237\u7684\u767b\u5f55\u3001\u767b\u51fa\u3001\u72b6\u6001\u66f4\u65b0\u7b49\u3002 <\/li>\n
        • \u6570\u636e\u5e93\u63a5\u53e3（Database Interface） ：\u8d1f\u8d23\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92，\u5b58\u50a8\u6d88\u606f\u8bb0\u5f55\u548c\u7528\u6237\u4fe1\u606f\u7b49\u3002 <\/li>\n<\/ul>\n

          \u670d\u52a1\u5668\u7aef\u67b6\u6784\u8bbe\u8ba1\u65f6\u8fd8\u9700\u8003\u8651\u4ee5\u4e0b\u51e0\u4e2a\u5173\u952e\u56e0\u7d20： <\/p>\n

            \n
          • \u53ef\u6269\u5c55\u6027 ：\u7cfb\u7edf\u5e94\u8bbe\u8ba1\u4e3a\u53ef\u6c34\u5e73\u6269\u5c55\u7684，\u4ee5\u652f\u6301\u66f4\u591a\u7684\u5e76\u53d1\u7528\u6237\u548c\u66f4\u5927\u7684\u6d88\u606f\u91cf\u3002 <\/li>\n
          • \u5bb9\u9519\u6027 ：\u5728\u8bbe\u8ba1\u65f6\u8981\u8003\u8651\u5230\u5355\u70b9\u6545\u969c\u7684\u5f71\u54cd，\u5e76\u786e\u4fdd\u5173\u952e\u7ec4\u4ef6\u5177\u6709\u5bb9\u9519\u673a\u5236\u3002 <\/li>\n
          • \u5b89\u5168\u6027 ：\u5fc5\u987b\u6709\u76f8\u5e94\u7684\u5b89\u5168\u63aa\u65bd，\u5982\u52a0\u5bc6\u901a\u4fe1，\u9632\u6b62\u4fe1\u606f\u6cc4\u9732\u548c\u975e\u6cd5\u8bbf\u95ee\u3002 <\/li>\n<\/ul>\n

            4.1.2 \u804a\u5929\u903b\u8f91\u7684\u6d41\u7a0b\u63a7\u5236 <\/h4>\n

            \u804a\u5929\u903b\u8f91\u7684\u6d41\u7a0b\u63a7\u5236，\u5b9e\u9645\u4e0a\u662f\u6307\u6d88\u606f\u5728\u670d\u52a1\u5668\u7aef\u7684\u751f\u547d\u5468\u671f\u7ba1\u7406，\u5b83\u6d89\u53ca\u6d88\u606f\u7684\u63a5\u6536\u3001\u5904\u7406\u3001\u5b58\u50a8\u3001\u5206\u53d1\u7b49\u73af\u8282\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5316\u7684\u6d41\u7a0b\u63a7\u5236\u793a\u4f8b： <\/p>\n

          • \u63a5\u6536\u6d88\u606f ：\u5ba2\u6237\u7aef\u901a\u8fc7WebSocket\u6216\u5176\u4ed6\u534f\u8bae\u53d1\u9001\u6d88\u606f\u5230\u670d\u52a1\u5668\u7aef\u3002 <\/li>\n
          • \u9a8c\u8bc1\u4e0e\u6388\u6743 ：\u670d\u52a1\u5668\u7aef\u9a8c\u8bc1\u6d88\u606f\u7684\u6765\u6e90，\u786e\u8ba4\u7528\u6237\u8eab\u4efd\u548c\u6743\u9650\u3002 <\/li>\n
          • \u6d88\u606f\u5904\u7406 ：\u6839\u636e\u6d88\u606f\u7c7b\u578b\u8fdb\u884c\u4e0d\u540c\u7684\u5904\u7406，\u4f8b\u5982，\u666e\u901a\u6d88\u606f\u5b58\u50a8\u5230\u6570\u636e\u5e93，\u7cfb\u7edf\u901a\u77e5\u76f4\u63a5\u5206\u53d1\u3002 <\/li>\n
          • \u6d88\u606f\u5b58\u50a8 ：\u5bf9\u4e8e\u9700\u8981\u6301\u4e45\u5316\u5b58\u50a8\u7684\u6d88\u606f，\u5c06\u5176\u5b58\u5165\u6570\u636e\u5e93\u3002 <\/li>\n
          • \u6d88\u606f\u5206\u53d1 ：\u5c06\u6d88\u606f\u63a8\u9001\u7ed9\u76ee\u6807\u7528\u6237\u6216\u7fa4\u7ec4\u3002 <\/li>\n
          • \u72b6\u6001\u66f4\u65b0 ：\u7528\u6237\u6216\u7fa4\u7ec4\u7684\u6d88\u606f\u5217\u8868\u9700\u8981\u66f4\u65b0，\u4ee5\u53cd\u6620\u6700\u65b0\u72b6\u6001\u3002 <\/li>\n

            \u4ee3\u7801\u5757\u4e0e\u903b\u8f91\u5206\u6790 <\/h4>\n

            \u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f2a\u4ee3\u7801\u793a\u4f8b，\u5c55\u793a\u4e86\u5982\u4f55\u63a7\u5236\u6d88\u606f\u5728\u670d\u52a1\u5668\u7aef\u7684\u6d41\u52a8： <\/p>\n

            def receive_message(user_id, message):
            \n """
            \n \u4f2a\u4ee3\u7801：\u63a5\u6536\u6d88\u606f
            \n """
            \n if not is_authorized(user_id):
            \n return "Unauthorized"
            \n message_type = determine_message_type(message)
            \n if message_type == "private":
            \n return process_private_message(user_id, message)
            \n elif message_type == "group":
            \n return process_group_message(user_id, message)
            \n else:
            \n return "Invalid message type"<\/p>\n

            def process_private_message(user_id, message):
            \n """
            \n \u4f2a\u4ee3\u7801：\u5904\u7406\u79c1\u804a\u6d88\u606f
            \n """
            \n # \u5b58\u50a8\u6d88\u606f\u5230\u6570\u636e\u5e93
            \n store_message_in_db(user_id, message)
            \n # \u5c06\u6d88\u606f\u63a8\u9001\u7ed9\u76ee\u6807\u7528\u6237
            \n push_message_to_target(user_id, message)<\/p>\n

            def process_group_message(user_id, message):
            \n """
            \n \u4f2a\u4ee3\u7801：\u5904\u7406\u7fa4\u804a\u6d88\u606f
            \n """
            \n # \u5b58\u50a8\u6d88\u606f\u5230\u6570\u636e\u5e93
            \n store_message_in_db(user_id, message)
            \n # \u5c06\u6d88\u606f\u63a8\u9001\u7ed9\u7fa4\u7ec4\u5185\u7684\u6240\u6709\u7528\u6237
            \n push_message_to_group_members(user_id, message)<\/p>\n

            \u4ee5\u4e0a\u4f2a\u4ee3\u7801\u5c55\u793a\u4e86\u57fa\u672c\u7684\u6d88\u606f\u5904\u7406\u6d41\u7a0b，\u5b9e\u9645\u5b9e\u73b0\u65f6\u9700\u914d\u5408\u5177\u4f53\u7684\u4e1a\u52a1\u903b\u8f91\u548c\u5b89\u5168\u63a7\u5236\u3002 <\/p>\n

            4.2 \u5b9e\u73b0\u670d\u52a1\u5668\u7aef\u7684\u6d88\u606f\u5904\u7406 <\/h3>\n

            4.2.1 \u63a5\u6536\u5ba2\u6237\u7aef\u6d88\u606f <\/h4>\n

            \u670d\u52a1\u5668\u7aef\u9996\u5148\u9700\u8981\u8bbe\u7f6e\u76d1\u542c\u7aef\u53e3，\u7b49\u5f85\u5ba2\u6237\u7aef\u53d1\u6765\u6d88\u606f\u3002\u8fd9\u4e00\u8fc7\u7a0b\u901a\u5e38\u6d89\u53ca\u5230\u7f51\u7edc\u7f16\u7a0b\u548c\u534f\u8bae\u89e3\u6790，\u4ee5WebSocket\u4e3a\u4f8b，\u670d\u52a1\u5668\u7aef\u9700\u8981\u521b\u5efaWebSocket\u670d\u52a1\u5e76\u76d1\u542c\u6307\u5b9a\u7aef\u53e3\u3002 <\/p>\n

            const WebSocket = require('ws');
            \nconst wss = new WebSocket.Server({ port: 8080 });<\/p>\n

            wss.on('connection', function connection(ws) {
            \n ws.on('message', function incoming(message) {
            \n console.log('received: %s', message);
            \n \/\/ \u8fd9\u91cc\u8fdb\u884c\u6d88\u606f\u7684\u5904\u7406\u903b\u8f91
            \n });
            \n});<\/p>\n

            \u8fd9\u6bb5\u4ee3\u7801\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528Node.js\u7684 ws \u5e93\u521b\u5efa\u4e00\u4e2aWebSocket\u670d\u52a1\u5668，\u5e76\u5728\u6709\u6d88\u606f\u5230\u6765\u65f6\u8fdb\u884c\u5904\u7406\u3002 <\/p>\n

            4.2.2 \u6d88\u606f\u7684\u8f6c\u53d1\u4e0e\u5206\u53d1 <\/h4>\n

            \u6d88\u606f\u63a5\u6536\u5230\u540e，\u9700\u8981\u6839\u636e\u7c7b\u578b\u8fdb\u884c\u8f6c\u53d1\u548c\u5206\u53d1\u3002\u8f6c\u53d1\u901a\u5e38\u662f\u5c06\u6d88\u606f\u53d1\u9001\u5230\u7279\u5b9a\u7684\u7528\u6237\u6216\u670d\u52a1，\u800c\u5206\u53d1\u662f\u6307\u5c06\u6d88\u606f\u63a8\u9001\u7ed9\u591a\u4e2a\u7528\u6237，\u5982\u7fa4\u804a\u4e2d\u3002 <\/p>\n

            function forwardMessage(targetUserId, message) {
            \n \/\/ \u4ece\u670d\u52a1\u5668\u7aef\u53d1\u9001\u6d88\u606f\u5230\u6307\u5b9a\u7528\u6237
            \n}<\/p>\n

            function distributeMessage(groupName, message) {
            \n \/\/ \u83b7\u53d6\u7fa4\u7ec4\u6210\u5458\u5217\u8868
            \n let members = getGroupMembers(groupName);
            \n \/\/ \u63a8\u9001\u6d88\u606f\u5230\u7fa4\u7ec4\u5185\u6240\u6709\u6210\u5458
            \n members.forEach(m => forwardMessage(m.id, message));
            \n}<\/p>\n

            \u4ee5\u4e0a\u793a\u4f8b\u4e2d forwardMessage \u51fd\u6570\u7528\u4e8e\u5411\u7279\u5b9a\u7528\u6237\u8f6c\u53d1\u6d88\u606f，\u800c distributeMessage \u5219\u5904\u7406\u7fa4\u7ec4\u6d88\u606f\u5206\u53d1\u3002 <\/p>\n

            \u8868\u683c <\/h4>\n

            \u5728\u5b9e\u9645\u5f00\u53d1\u4e2d，\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u8868\u683c\u6765\u8bb0\u5f55\u6d88\u606f\u7c7b\u578b\u548c\u5bf9\u5e94\u5904\u7406\u51fd\u6570\u7684\u6620\u5c04\u5173\u7cfb，\u4ee5\u4fbf\u5feb\u901f\u67e5\u627e\u548c\u7ef4\u62a4\u3002 <\/p>\n

            | \u6d88\u606f\u7c7b\u578b | \u5904\u7406\u51fd\u6570 | |———-|———-| | private | forwardMessage | | group | distributeMessage | <\/p>\n

            \u901a\u8fc7\u8fd9\u79cd\u6620\u5c04\u65b9\u5f0f，\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u5404\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u6d88\u606f，\u4fbf\u4e8e\u540e\u7eed\u7684\u6269\u5c55\u548c\u7ef4\u62a4\u5de5\u4f5c\u3002 <\/p>\n

            mermaid\u683c\u5f0f\u6d41\u7a0b\u56fe <\/h4>\n

            \u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 mermaid \u683c\u5f0f\u63cf\u8ff0\u6d88\u606f\u5904\u7406\u6d41\u7a0b\u7684\u793a\u4f8b： <\/p>\n

            graph LR
            \n A[\u63a5\u6536\u6d88\u606f] –> B{\u6d88\u606f\u7c7b\u578b\u5224\u65ad}
            \n B –>|\u79c1\u804a| C[\u5904\u7406\u79c1\u804a\u6d88\u606f]
            \n B –>|\u7fa4\u804a| D[\u5904\u7406\u7fa4\u804a\u6d88\u606f]
            \n B –>|\u5176\u4ed6| E[\u5176\u4ed6\u6d88\u606f\u5904\u7406]
            \n C –> F[\u5b58\u50a8\u6d88\u606f]
            \n D –> F
            \n E –> F
            \n F –> G[\u6d88\u606f\u5206\u53d1]<\/p>\n

            \u8fd9\u4e2a\u6d41\u7a0b\u56fe\u7b80\u8981\u5730\u8bf4\u660e\u4e86\u6d88\u606f\u63a5\u6536\u540e，\u5982\u4f55\u6839\u636e\u4e0d\u540c\u7c7b\u578b\u8fdb\u884c\u5904\u7406\u3002 <\/p>\n

            \u901a\u8fc7\u4ee5\u4e0a\u7684\u4ee3\u7801\u793a\u4f8b\u3001\u8868\u683c\u548c\u6d41\u7a0b\u56fe，\u5f00\u53d1\u8005\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u670d\u52a1\u5668\u7aef\u5982\u4f55\u63a5\u6536\u548c\u5904\u7406\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u6d88\u606f\u3002\u4e0b\u4e00\u7ae0\u8282\u5c06\u4ecb\u7ecd\u5ba2\u6237\u7aef\u6d88\u606f\u66f4\u65b0\u5904\u7406\u7684\u76f8\u5173\u5185\u5bb9\u3002 <\/p>\n

            5. \u5ba2\u6237\u7aef\u6d88\u606f\u66f4\u65b0\u5904\u7406 <\/h2>\n

            5.1 \u5ba2\u6237\u7aef\u67b6\u6784\u4e0e\u7ec4\u4ef6 <\/h3>\n

            5.1.1 \u5ba2\u6237\u7aef\u754c\u9762\u8bbe\u8ba1\u8981\u70b9 <\/h4>\n

            \u5728\u6784\u5efa\u5373\u65f6\u804a\u5929\u7cfb\u7edf\u7684\u5ba2\u6237\u7aef\u65f6，\u7528\u6237\u754c\u9762\u8bbe\u8ba1\u662f\u81f3\u5173\u91cd\u8981\u7684\u90e8\u5206\u3002\u4e00\u4e2a\u76f4\u89c2\u4e14\u6613\u4e8e\u4f7f\u7528\u7684\u754c\u9762\u53ef\u4ee5\u6781\u5927\u63d0\u5347\u7528\u6237\u4f53\u9a8c，\u5e76\u4e14\u964d\u4f4e\u7528\u6237\u7684\u5b66\u4e60\u6210\u672c\u3002\u5728\u8bbe\u8ba1\u8981\u70b9\u65b9\u9762，\u9996\u5148\u9700\u8981\u8003\u8651\u7684\u662f\u5e03\u5c40\u7684\u7b80\u6d01\u6027\u4e0e\u4fe1\u606f\u5c55\u793a\u7684\u6e05\u6670\u5ea6\u3002\u7b80\u6d01\u7684\u754c\u9762\u80fd\u591f\u8ba9\u7528\u6237\u5feb\u901f\u6293\u4f4f\u91cd\u70b9，\u800c\u4fe1\u606f\u5c55\u793a\u7684\u6e05\u6670\u5ea6\u5219\u6709\u52a9\u4e8e\u7528\u6237\u53ca\u65f6\u4e86\u89e3\u6700\u65b0\u7684\u6d88\u606f\u52a8\u6001\u3002 <\/p>\n

            \u63a5\u4e0b\u6765\u662f\u4ea4\u4e92\u8bbe\u8ba1\u3002\u5373\u65f6\u804a\u5929\u5e94\u7528\u7684\u4ea4\u4e92\u8bbe\u8ba1\u5e94\u4fdd\u8bc1\u6d41\u7545，\u51cf\u5c11\u7528\u6237\u64cd\u4f5c\u6b65\u9aa4，\u6bd4\u5982\u4e00\u952e\u5feb\u901f\u53d1\u9001\u6d88\u606f，\u6216\u662f\u901a\u8fc7\u6ed1\u52a8\u64cd\u4f5c\u6765\u67e5\u770b\u66f4\u591a\u6d88\u606f\u3002\u6b64\u5916，\u9002\u5e94\u4e0d\u540c\u7f51\u7edc\u72b6\u51b5\u4e0b\u7684\u6d88\u606f\u53d1\u9001\u673a\u5236\u4e5f\u662f\u8bbe\u8ba1\u4e2d\u9700\u8981\u5173\u6ce8\u7684\u70b9\u3002\u4f8b\u5982，\u8bbe\u8ba1\u79bb\u7ebf\u6d88\u606f\u7f13\u5b58\u548c\u81ea\u52a8\u91cd\u8fde\u529f\u80fd，\u786e\u4fdd\u5728\u7f51\u7edc\u4e0d\u7a33\u5b9a\u7684\u60c5\u51b5\u4e0b\u7528\u6237\u4ecd\u7136\u80fd\u591f\u987a\u5229\u4f7f\u7528\u804a\u5929\u529f\u80fd\u3002 <\/p>\n

            5.1.2 \u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u7684\u901a\u4fe1\u534f\u8bae <\/h4>\n

            \u5728\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7aef\u8fdb\u884c\u901a\u4fe1\u65f6，\u9009\u62e9\u5408\u9002\u7684\u901a\u4fe1\u534f\u8bae\u662f\u4fdd\u8bc1\u6d88\u606f\u5b9e\u65f6\u66f4\u65b0\u7684\u5173\u952e\u3002\u5e38\u7528\u7684\u5b9e\u65f6\u901a\u4fe1\u534f\u8bae\u6709WebSocket\u548cHTTP\u8f6e\u8be2\u4e24\u79cd\u3002 <\/p>\n

            WebSocket\u534f\u8bae\u63d0\u4f9b\u4e86\u4e00\u79cd\u5168\u53cc\u5de5\u7684\u901a\u4fe1\u65b9\u5f0f，\u53ef\u4ee5\u5b9e\u73b0\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u5b9e\u65f6\u53cc\u5411\u901a\u4fe1\u3002\u76f8\u6bd4\u4e8eHTTP\u8f6e\u8be2，\u5b83\u7684\u4f18\u52bf\u5728\u4e8e\u80fd\u591f\u51cf\u5c11\u670d\u52a1\u5668\u5904\u7406\u8bf7\u6c42\u7684\u8d1f\u8f7d\u548c\u964d\u4f4e\u5ef6\u8fdf，\u56e0\u4e3a\u5b83\u4e0d\u9700\u8981\u6301\u7eed\u4e0d\u65ad\u5730\u53d1\u9001\u8bf7\u6c42\u6765\u83b7\u53d6\u65b0\u7684\u6570\u636e\u3002 <\/p>\n

            \u7136\u800c，\u5728\u67d0\u4e9b\u573a\u666f\u4e2d\u53ef\u80fd\u9700\u8981\u652f\u6301\u4e0d\u652f\u6301WebSocket\u7684\u8001\u65e7\u6d4f\u89c8\u5668\u3002\u8fd9\u65f6\u5019\u53ef\u4ee5\u91c7\u7528HTTP\u8f6e\u8be2\u4f5c\u4e3a\u4e00\u79cd\u5907\u9009\u65b9\u6848\u3002\u8f6e\u8be2\u7684\u65b9\u5f0f\u662f\u5ba2\u6237\u7aef\u5b9a\u671f\u5411\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42，\u8be2\u95ee\u662f\u5426\u6709\u65b0\u7684\u6d88\u606f\u66f4\u65b0\u3002\u8fd9\u79cd\u65b9\u5f0f\u867d\u7136\u4f1a\u4ea7\u751f\u8f83\u9ad8\u7684\u7f51\u7edc\u5f00\u9500，\u5e76\u4e14\u5728\u6d88\u606f\u66f4\u65b0\u9891\u7387\u4f4e\u65f6\u4f1a\u5f15\u5165\u989d\u5916\u7684\u5ef6\u8fdf，\u4f46\u5728\u4e0d\u652f\u6301WebSocket\u7684\u73af\u5883\u4e0b，\u5b83\u4ecd\u7136\u662f\u4e00\u79cd\u53ef\u884c\u7684\u89e3\u51b3\u65b9\u6848\u3002 <\/p>\n

            5.2 \u5b9e\u73b0\u6d88\u606f\u7684\u5b9e\u65f6\u66f4\u65b0 <\/h3>\n

            5.2.1 \u524d\u7aef\u6d88\u606f\u5c55\u793a\u673a\u5236 <\/h4>\n

            \u8981\u5b9e\u73b0\u6d88\u606f\u7684\u5b9e\u65f6\u66f4\u65b0，\u524d\u7aef\u5c55\u793a\u673a\u5236\u662f\u6838\u5fc3\u90e8\u5206\u3002\u901a\u5e38，\u8fd9\u4e00\u673a\u5236\u5305\u62ec\u6d88\u606f\u7684\u6e32\u67d3\u548c\u6d88\u606f\u5217\u8868\u7684\u6eda\u52a8\u66f4\u65b0\u3002\u6d88\u606f\u6e32\u67d3\u4e3b\u8981\u662f\u901a\u8fc7HTML\u548cCSS\u6765\u5b9e\u73b0\u6d88\u606f\u7684\u5e03\u5c40\u548c\u6837\u5f0f\u7684\u5b9a\u5236，\u786e\u4fdd\u6d88\u606f\u7684\u53ef\u8bfb\u6027\u548c\u7f8e\u89c2\u6027\u3002\u6d88\u606f\u5217\u8868\u7684\u6eda\u52a8\u66f4\u65b0\u5219\u6d89\u53ca\u5230\u52a8\u6001\u66f4\u65b0DOM\u7684\u64cd\u4f5c，\u53ef\u4ee5\u901a\u8fc7JavaScript\u6765\u5b9e\u73b0\u3002\u5728\u5b9e\u73b0\u4e0a，\u53ef\u4ee5\u4f7f\u7528\u865a\u62df\u6eda\u52a8\u6280\u672f\u6765\u4f18\u5316\u6027\u80fd，\u8be5\u6280\u672f\u80fd\u591f\u5728\u7528\u6237\u6eda\u52a8\u5230\u6d88\u606f\u5217\u8868\u5e95\u90e8\u65f6\u52a8\u6001\u52a0\u8f7d\u6d88\u606f\u5185\u5bb9，\u800c\u4e0d\u9700\u8981\u4e00\u6b21\u6027\u6e32\u67d3\u6574\u4e2a\u6d88\u606f\u5217\u8868，\u4ece\u800c\u51cf\u5c11DOM\u64cd\u4f5c\u5e26\u6765\u7684\u6027\u80fd\u5f00\u9500\u3002 <\/p>\n

            5.2.2 \u6d88\u606f\u540c\u6b65\u4e0e\u72b6\u6001\u7ba1\u7406 <\/h4>\n

            \u6d88\u606f\u540c\u6b65\u662f\u786e\u4fdd\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u6d88\u606f\u4e00\u81f4\u6027\u7684\u5173\u952e\u73af\u8282\u3002\u901a\u5e38，\u6d88\u606f\u540c\u6b65\u662f\u901a\u8fc7\u5ba2\u6237\u7aef\u76d1\u542c\u6765\u81ea\u670d\u52a1\u5668\u7684\u6d88\u606f\u63a8\u9001\u4e8b\u4ef6\u6765\u5b8c\u6210\u7684\u3002\u5728\u63a5\u6536\u5230\u65b0\u7684\u6d88\u606f\u540e，\u5ba2\u6237\u7aef\u9700\u8981\u66f4\u65b0\u672c\u5730\u7684\u6d88\u606f\u5217\u8868，\u5e76\u5c06\u65b0\u6d88\u606f\u5c55\u793a\u7ed9\u7528\u6237\u3002\u7531\u4e8e\u5373\u65f6\u804a\u5929\u5e94\u7528\u4e2d\u6d88\u606f\u7684\u7c7b\u578b\u591a\u79cd\u591a\u6837，\u53ef\u80fd\u5305\u62ec\u6587\u672c\u3001\u56fe\u7247\u3001\u89c6\u9891\u7b49，\u56e0\u6b64\u540c\u6b65\u673a\u5236\u9700\u8981\u80fd\u591f\u517c\u5bb9\u4e0d\u540c\u7c7b\u578b\u7684\u6d88\u606f\u3002 <\/p>\n

            \u72b6\u6001\u7ba1\u7406\u7528\u4e8e\u8ffd\u8e2a\u548c\u63a7\u5236\u6d88\u606f\u7684\u53d1\u9001\u3001\u63a5\u6536\u4ee5\u53ca\u672a\u8bfb\u72b6\u6001\u7b49\u3002\u8fd9\u901a\u5e38\u6d89\u53ca\u5bf9\u6d88\u606f\u7684\u5b58\u50a8\u548c\u7ba1\u7406\u3002\u5728Web\u5e94\u7528\u4e2d，\u53ef\u4ee5\u4f7f\u7528\u672c\u5730\u5b58\u50a8\u5982IndexedDB\u6216\u8005\u6d4f\u89c8\u5668\u7684sessionStorage\u6765\u5b58\u50a8\u6d88\u606f\u72b6\u6001，\u4e5f\u53ef\u4ee5\u5229\u7528\u4e13\u95e8\u7684\u72b6\u6001\u7ba1\u7406\u5e93\u5982Redux\u6216Vuex\u6765\u5b9e\u73b0\u3002\u65e0\u8bba\u91c7\u7528\u54ea\u79cd\u5b58\u50a8\u65b9\u5f0f，\u5176\u76ee\u7684\u90fd\u662f\u4e3a\u4e86\u786e\u4fdd\u7528\u6237\u5728\u5207\u6362\u804a\u5929\u7a97\u53e3\u6216\u5237\u65b0\u9875\u9762\u65f6，\u80fd\u5feb\u901f\u6062\u590d\u5230\u4e4b\u524d\u7684\u6d88\u606f\u72b6\u6001\u3002 <\/p>\n

            \/\/ \u793a\u4f8b\u4ee3\u7801：\u524d\u7aef\u6d88\u606f\u5c55\u793a\u673a\u5236\u7684\u4e00\u90e8\u5206
            \nfunction displayMessage(message) {
            \n const messagesContainer = document.getElementById('messages');
            \n const messageElement = document.createElement('div');
            \n messageElement.classList.add('message');
            \n messageElement.innerText = message;
            \n messagesContainer.appendChild(messageElement);
            \n messagesContainer.scrollTop = messagesContainer.scrollHeight;
            \n}<\/p>\n

            \u5728\u4e0a\u8ff0\u793a\u4f8b\u4ee3\u7801\u4e2d， displayMessage \u51fd\u6570\u63a5\u53d7\u4e00\u4e2a\u6d88\u606f\u5bf9\u8c61\u4f5c\u4e3a\u53c2\u6570，\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 div \u5143\u7d20\u6765\u5c55\u793a\u6d88\u606f，\u5e76\u5c06\u5176\u6dfb\u52a0\u5230\u6d88\u606f\u5bb9\u5668\u4e2d\u3002\u540c\u65f6，\u8c03\u7528 scrollTop \u548c scrollHeight \u5c5e\u6027\u4f7f\u6d88\u606f\u5217\u8868\u6eda\u52a8\u5230\u6700\u65b0\u6d88\u606f\u7684\u4f4d\u7f6e\u3002 <\/p>\n

            \/\/ \u793a\u4f8b\u4ee3\u7801：\u6d88\u606f\u540c\u6b65\u4e0e\u72b6\u6001\u7ba1\u7406\u7684\u4e00\u90e8\u5206
            \nlet unreadMessagesCount = 0; \/\/ \u672a\u8bfb\u6d88\u606f\u8ba1\u6570\u5668<\/p>\n

            function updateUnreadCount(newMessageCount) {
            \n unreadMessagesCount += newMessageCount;
            \n document.getElementById('unread-count').innerText = unreadMessagesCount;
            \n \/\/ \u66f4\u65b0UI\u4e0a\u7684\u672a\u8bfb\u6d88\u606f\u8ba1\u6570
            \n}<\/p>\n

            \/\/ \u6d88\u606f\u540c\u6b65\u540e\u8c03\u7528\u6b64\u51fd\u6570\u66f4\u65b0\u672a\u8bfb\u6d88\u606f\u6570
            \nupdateUnreadCount(1);<\/p>\n

            \u5728\u8be5\u793a\u4f8b\u4ee3\u7801\u4e2d， updateUnreadCount \u51fd\u6570\u4f1a\u66f4\u65b0\u672a\u8bfb\u6d88\u606f\u7684\u8ba1\u6570，\u5e76\u66f4\u65b0UI\u4e0a\u7684\u663e\u793a\u3002\u6bcf\u5f53\u6709\u65b0\u7684\u6d88\u606f\u5230\u8fbe\u65f6，\u8c03\u7528\u8be5\u51fd\u6570\u4ee5\u589e\u52a0\u672a\u8bfb\u6d88\u606f\u8ba1\u6570，\u5e76\u5b9e\u65f6\u53cd\u9988\u7ed9\u7528\u6237\u3002 <\/p>\n

            6. DWR\u7684JavaScript API\u5e94\u7528 <\/h2>\n

            6.1 DWR JavaScript API\u6982\u8ff0 <\/h3>\n

            6.1.1 API\u7684\u6784\u6210\u4e0e\u529f\u80fd <\/h4>\n

            DWR（Direct Web Remoting）\u662f\u4e00\u4e2a\u5f00\u6e90\u7684Java\u5e93，\u5b83\u5141\u8bb8\u5728\u6d4f\u89c8\u5668\u7aef\u7684JavaScript\u4e0e\u670d\u52a1\u5668\u7aef\u7684Java\u4ee3\u7801\u8fdb\u884c\u8f7b\u677e\u4ea4\u4e92\u3002DWR\u7684JavaScript API\u662f\u4e00\u4e2a\u6838\u5fc3\u7ec4\u4ef6，\u5b83\u901a\u8fc7\u63d0\u4f9b\u4e00\u7ec4\u7b80\u6d01\u7684JavaScript\u51fd\u6570\u6765\u5c01\u88c5HTTP\u8bf7\u6c42\u548c\u54cd\u5e94，\u4f7f\u5f97\u5f00\u53d1\u8005\u80fd\u591f\u4ee5\u4e00\u79cd\u975e\u5e38\u76f4\u89c2\u548c\u65b9\u4fbf\u7684\u65b9\u5f0f\u6765\u8c03\u7528\u670d\u52a1\u5668\u7aef\u7684\u65b9\u6cd5\u3002 <\/p>\n

            \u5728DWR\u7684API\u4e2d，\u4e3b\u8981\u5305\u542b\u4e86\u4ee5\u4e0b\u51e0\u4e2a\u529f\u80fd： <\/p>\n

              \n
            • \u8fdc\u7a0b\u65b9\u6cd5\u8c03\u7528（Remote Procedure Call, RPC） ：\u8fd9\u662fDWR\u63d0\u4f9b\u7684\u6700\u6838\u5fc3\u529f\u80fd\u4e4b\u4e00，\u5141\u8bb8\u5f00\u53d1\u8005\u5728JavaScript\u4e2d\u76f4\u63a5\u8c03\u7528Java\u540e\u7aef\u65b9\u6cd5，\u5e76\u5904\u7406\u8fd4\u56de\u7ed3\u679c\u3002 <\/li>\n
            • \u6570\u636e\u7ed1\u5b9a ：DWR\u652f\u6301\u5728JavaScript\u548cJava\u5bf9\u8c61\u4e4b\u95f4\u8fdb\u884c\u81ea\u52a8\u7684\u6570\u636e\u6620\u5c04，\u4f7f\u5f97\u5728\u4e24\u8fb9\u7684\u6570\u636e\u7ed3\u6784\u4fdd\u6301\u540c\u6b65\u53d8\u5f97\u8f7b\u800c\u6613\u4e3e\u3002 <\/li>\n
            • \u4e8b\u4ef6\u89e6\u53d1 ：DWR\u7684API\u652f\u6301\u4e8b\u4ef6\u76d1\u542c\u673a\u5236，\u5141\u8bb8JavaScript\u4ee3\u7801\u54cd\u5e94\u670d\u52a1\u5668\u7aef\u53d1\u751f\u7684\u53d8\u5316\u3002 <\/li>\n<\/ul>\n

              \u8fd9\u4e9bAPI\u901a\u8fc7\u4e00\u4e2a\u5355\u4e00\u7684JavaScript\u6587\u4ef6\u88ab\u5305\u542b\u5230\u7f51\u9875\u4e2d，\u4e3aWeb\u5e94\u7528\u63d0\u4f9b\u4e86\u4e00\u79cd\u65e0\u7f1d\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u524d\u540e\u7aef\u7684\u901a\u4fe1\u3002 <\/p>\n

              6.1.2 API\u5728\u524d\u7aef\u7684\u5e94\u7528\u573a\u666f <\/h4>\n

              DWR\u7684JavaScript API\u4e3b\u8981\u5e94\u7528\u4e8e\u90a3\u4e9b\u9700\u8981\u4e0e\u670d\u52a1\u5668\u8fdb\u884c\u5b9e\u65f6\u6570\u636e\u4ea4\u4e92\u7684Web\u5e94\u7528，\u7279\u522b\u662f\u5728\u4e0b\u9762\u7684\u5e94\u7528\u573a\u666f\u4e2d\u8868\u73b0\u5c24\u4e3a\u7a81\u51fa： <\/p>\n

                \n
              • \u5373\u65f6\u901a\u8baf ：\u804a\u5929\u7cfb\u7edf\u9700\u8981\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u9891\u7e41\u5730\u8fdb\u884c\u6570\u636e\u4ea4\u6362，DWR\u53ef\u4ee5\u7b80\u5316\u8fd9\u4e00\u8fc7\u7a0b\u3002 <\/li>\n
              • \u52a8\u6001Web\u5e94\u7528 ：\u5728Web\u9875\u9762\u4e0a\u9700\u8981\u52a8\u6001\u66f4\u65b0\u5185\u5bb9\u7684\u5e94\u7528，\u4f8b\u5982\u80a1\u7968\u4fe1\u606f\u3001\u5929\u6c14\u9884\u62a5\u66f4\u65b0\u7b49，DWR\u53ef\u4ee5\u63d0\u4f9b\u4fbf\u6377\u7684\u65b9\u5f0f\u6765\u5904\u7406\u5b9e\u65f6\u6570\u636e\u3002 <\/li>\n
              • \u534f\u4f5c\u5de5\u5177 ：\u5728\u7ebf\u6587\u6863\u7f16\u8f91\u3001\u767d\u677f\u5171\u4eab\u7b49\u534f\u4f5c\u5de5\u5177\u901a\u5e38\u8981\u6c42\u590d\u6742\u7684\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u7aef\u7684\u540c\u6b65，DWR\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e9b\u529f\u80fd\u3002 <\/li>\n
              • \u5728\u7ebf\u6e38\u620f ：\u5c24\u5176\u662f\u9700\u8981\u5b9e\u65f6\u8ba1\u7b97\u548c\u591a\u4eba\u4e92\u52a8\u7684\u5728\u7ebf\u6e38\u620f，DWR\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u5ba2\u6237\u7aef\u4e0e\u6e38\u620f\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u901a\u4fe1\u3002 <\/li>\n<\/ul>\n

                6.2 \u5229\u7528DWR API\u5b9e\u73b0\u4ea4\u4e92\u529f\u80fd <\/h3>\n

                6.2.1 \u8fdc\u7a0b\u65b9\u6cd5\u8c03\u7528\u7684\u5b9e\u73b0 <\/h4>\n

                \u8981\u4f7f\u7528DWR\u5728\u6d4f\u89c8\u5668\u7aef\u8fdb\u884c\u8fdc\u7a0b\u65b9\u6cd5\u8c03\u7528，\u9996\u5148\u9700\u8981\u5728\u670d\u52a1\u5668\u7aef\u5b9a\u4e49Java\u7c7b\u548c\u65b9\u6cd5，\u7136\u540e\u901a\u8fc7DWR\u63d0\u4f9b\u7684\u5de5\u5177\u5c06\u8fd9\u4e9b\u7c7b\u548c\u65b9\u6cd5\u66b4\u9732\u7ed9\u524d\u7aefJavaScript\u3002DWR\u6846\u67b6\u4f1a\u81ea\u52a8\u751f\u6210\u4e00\u4e9bJavaScript\u4ee3\u7801，\u8fd9\u4e9b\u4ee3\u7801\u5305\u542b\u4e86\u8bbf\u95eeJava\u5bf9\u8c61\u7684\u51fd\u6570\u3002 <\/p>\n

                \u4e0b\u9762\u662f\u4e00\u4e2a\u8fdc\u7a0b\u65b9\u6cd5\u8c03\u7528\u7684\u57fa\u672c\u793a\u4f8b： <\/p>\n

                \/\/ \u5047\u8bbe\u6709\u4e00\u4e2a\u540d\u4e3aHelloService\u7684Java\u7c7b，\u5305\u542b\u4e00\u4e2a\u540d\u4e3asayHello\u7684\u65b9\u6cd5
                \nvar helloService = dwr.engine.findObject("helloService");
                \nhelloService.sayHello("World", {
                \n callback: function(response) {
                \n alert("Server said: " + response);
                \n }
                \n});<\/p>\n

                \u8fd9\u6bb5\u4ee3\u7801\u9996\u5148\u901a\u8fc7 dwr.engine.findObject \u65b9\u6cd5\u627e\u5230\u4e00\u4e2a\u540d\u4e3a helloService \u7684JavaScript\u5bf9\u8c61，\u8be5\u5bf9\u8c61\u662f\u7531DWR\u6839\u636eJava\u540e\u7aef\u7684 HelloService \u7c7b\u751f\u6210\u7684\u3002\u7136\u540e\u8c03\u7528 sayHello \u65b9\u6cd5，\u5e76\u4f20\u5165\u53c2\u6570\u3002\u901a\u8fc7\u56de\u8c03\u51fd\u6570\u5904\u7406\u8fd4\u56de\u7684\u7ed3\u679c\u3002 <\/p>\n

                6.2.2 \u6570\u636e\u7ed1\u5b9a\u4e0e\u4e8b\u4ef6\u89e6\u53d1\u673a\u5236 <\/h4>\n

                DWR\u63d0\u4f9b\u4e86\u6570\u636e\u7ed1\u5b9a\u529f\u80fd，\u8fd9\u4f7f\u5f97JavaScript\u5bf9\u8c61\u7684\u5c5e\u6027\u53ef\u4ee5\u4e0e\u540e\u7aefJava\u5bf9\u8c61\u7684\u5c5e\u6027\u540c\u6b65\u3002\u5f53\u540e\u7aefJava\u5bf9\u8c61\u7684\u5c5e\u6027\u53d1\u751f\u53d8\u5316\u65f6，\u5173\u8054\u7684JavaScript\u5bf9\u8c61\u4e5f\u4f1a\u76f8\u5e94\u66f4\u65b0\u3002 <\/p>\n

                \u4e8b\u4ef6\u89e6\u53d1\u673a\u5236\u662fDWR API\u53e6\u4e00\u4e2a\u91cd\u8981\u7684\u7279\u6027，\u5b83\u5141\u8bb8JavaScript\u4ee3\u7801\u6ce8\u518c\u4e8b\u4ef6\u5904\u7406\u5668\u6765\u54cd\u5e94\u670d\u52a1\u5668\u7aef\u7684\u53d8\u5316\u3002\u8fd9\u901a\u5e38\u662f\u901a\u8fc7\u76d1\u542cJava\u5bf9\u8c61\u4e0a\u7684\u67d0\u4e9b\u65b9\u6cd5\u8c03\u7528\u6765\u5b9e\u73b0\u7684\u3002 <\/p>\n

                \u4e0b\u9762\u662f\u4e00\u4e2a\u6570\u636e\u7ed1\u5b9a\u548c\u4e8b\u4ef6\u89e6\u53d1\u7684\u7efc\u5408\u793a\u4f8b： <\/p>\n

                \/\/ \u5047\u8bbe\u6709\u4e00\u4e2a\u540d\u4e3aCounter\u7684Java\u7c7b，\u5305\u542b\u4e00\u4e2a\u540d\u4e3acount\u7684\u5c5e\u6027
                \nvar counter = dwr.engine.findObject("counter");<\/p>\n

                \/\/ \u7ed1\u5b9acount\u5c5e\u6027\u5230JavaScript\u5bf9\u8c61\u7684count\u5c5e\u6027
                \ndwr.util.addProperties(counter, "count");<\/p>\n

                \/\/ \u6ce8\u518c\u4e00\u4e2a\u76d1\u542c\u5668，\u5f53Java\u7aef\u7684count\u5c5e\u6027\u53d8\u5316\u65f6，\u66f4\u65b0JavaScript\u7aef\u7684count
                \ndwr.engine.addPoll(function() {
                \n counter.count = counter.count; \/\/ \u8fd9\u884c\u4ee3\u7801\u4f1a\u81ea\u52a8\u89e6\u53d1DWR\u7684\u56de\u8c03，\u83b7\u53d6\u65b0\u7684count\u503c
                \n});<\/p>\n

                \/\/ \u5728Java\u7aef\u589e\u52a0count\u503c
                \ncounter.increment = function(callback) {
                \n \/\/ Java\u7aef\u5b9e\u73b0\u7684\u903b\u8f91
                \n console.log("Incrementing the count");
                \n callback(1); \/\/ \u8fd9\u91cc\u76841\u8868\u793a\u65b0\u7684count\u503c
                \n};<\/p>\n

                \u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d， addProperties \u51fd\u6570\u7528\u4e8e\u5c06Java\u5bf9\u8c61\u7684\u5c5e\u6027\u7ed1\u5b9a\u5230JavaScript\u5bf9\u8c61\u7684\u540c\u540d\u5c5e\u6027\u4e0a\u3002\u901a\u8fc7\u5468\u671f\u6027\u5730\u8c03\u7528 increment \u51fd\u6570（\u8fd9\u91cc\u901a\u8fc7 addPoll \u51fd\u6570\u6a21\u62df），\u6211\u4eec\u53ef\u4ee5\u6a21\u62dfJava\u7aefcount\u503c\u7684\u6539\u53d8，\u5e76\u901a\u8fc7\u56de\u8c03\u51fd\u6570\u6765\u66f4\u65b0JavaScript\u7aef\u7684count\u503c\u3002 <\/p>\n

                \u4ee5\u4e0a\u4ee3\u7801\u4e2d\u7684 addPoll \u51fd\u6570\u662fDWR\u63d0\u4f9b\u7684\u4e00\u4e2a\u7279\u5b9a\u673a\u5236，\u7528\u4e8e\u5468\u671f\u6027\u5730\u68c0\u67e5\u6570\u636e\u53d8\u5316，\u5e76\u89e6\u53d1JavaScript\u7684\u56de\u8c03\u51fd\u6570\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f，\u5728\u5b9e\u9645\u5e94\u7528\u4e2d，\u5e94\u8c28\u614e\u4f7f\u7528 addPoll ，\u56e0\u4e3a\u5b83\u53ef\u80fd\u4f1a\u5bfc\u81f4\u9891\u7e41\u7684\u670d\u52a1\u5668\u8bf7\u6c42\u548c\u8f83\u9ad8\u7684\u7f51\u7edc\u5f00\u9500\u3002 <\/p>\n

                \u901a\u8fc7\u8fd9\u4e9b\u793a\u4f8b，\u6211\u4eec\u53ef\u4ee5\u770b\u5230DWR\u7684JavaScript API\u5728\u7b80\u5316\u524d\u540e\u7aef\u4ea4\u4e92\u65b9\u9762\u6240\u5c55\u793a\u7684\u5f3a\u5927\u529f\u80fd\u548c\u7075\u6d3b\u6027\u3002DWR\u63d0\u4f9b\u4e86\u4e00\u5957\u5b8c\u6574\u7684API\u6765\u5b9e\u73b0\u8fdc\u7a0b\u65b9\u6cd5\u8c03\u7528\u3001\u6570\u636e\u7ed1\u5b9a\u548c\u4e8b\u4ef6\u89e6\u53d1，\u4e3a\u5b9e\u65f6Web\u5e94\u7528\u7684\u5f00\u53d1\u63d0\u4f9b\u4e86\u6781\u5927\u7684\u4fbf\u5229\u3002 <\/p>\n

                7. \u5b9e\u65f6\u6d88\u606f\u63a8\u9001\u7684\u4e8b\u4ef6\u76d1\u542c\u4e0e\u5b9e\u73b0 <\/h2>\n

                7.1 \u4e8b\u4ef6\u76d1\u542c\u673a\u5236\u7684\u7406\u8bba\u57fa\u7840 <\/h3>\n

                \u4e8b\u4ef6\u76d1\u542c\u673a\u5236\u662f\u6784\u5efa\u5b9e\u65f6\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206，\u5b83\u8d1f\u8d23\u5728\u7cfb\u7edf\u4e2d\u6355\u6349\u548c\u54cd\u5e94\u5404\u79cd\u4e8b\u4ef6\u3002\u4e8b\u4ef6\u9a71\u52a8\u7f16\u7a0b\u6a21\u578b\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u6a21\u5f0f，\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b，\u7a0b\u5e8f\u7684\u6d41\u7a0b\u662f\u7531\u7528\u6237\u4e8b\u4ef6\u6216\u7cfb\u7edf\u6d88\u606f\u6765\u9a71\u52a8\u7684\u3002 <\/p>\n

                7.1.1 \u4e8b\u4ef6\u9a71\u52a8\u7f16\u7a0b\u6a21\u578b <\/h4>\n

                \u4e8b\u4ef6\u9a71\u52a8\u7f16\u7a0b\u6a21\u578b\u4e2d，\u7a0b\u5e8f\u4f1a\u4e00\u76f4\u5904\u4e8e\u76d1\u542c\u72b6\u6001，\u7b49\u5f85\u7279\u5b9a\u7684\u4e8b\u4ef6\u53d1\u751f\u3002\u4e00\u65e6\u4e8b\u4ef6\u88ab\u89e6\u53d1，\u76f8\u5e94\u7684\u4e8b\u4ef6\u76d1\u542c\u5668（Listener）\u6216\u5904\u7406\u5668（Handler）\u5c31\u4f1a\u88ab\u6fc0\u6d3b，\u6267\u884c\u5b9a\u4e49\u597d\u7684\u903b\u8f91\u6765\u54cd\u5e94\u8fd9\u4e9b\u4e8b\u4ef6\u3002\u4e8b\u4ef6\u53ef\u4ee5\u662f\u7528\u6237\u4ea4\u4e92（\u5982\u70b9\u51fb\u3001\u952e\u5165\u7b49），\u4e5f\u53ef\u4ee5\u662f\u7cfb\u7edf\u5185\u90e8\u72b6\u6001\u53d8\u5316（\u5982\u8d44\u6e90\u52a0\u8f7d\u5b8c\u6210\u3001\u6570\u636e\u66f4\u65b0\u7b49）\u3002 <\/p>\n

                7.1.2 \u5b9e\u65f6\u901a\u4fe1\u4e2d\u7684\u4e8b\u4ef6\u7c7b\u578b <\/h4>\n

                \u5b9e\u65f6\u901a\u4fe1\u7cfb\u7edf\u4e2d\u6d89\u53ca\u7684\u4e8b\u4ef6\u7c7b\u578b\u591a\u6837，\u5e38\u89c1\u7684\u5305\u62ec： – \u8fde\u63a5\u4e8b\u4ef6：\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u5efa\u7acb\u8fde\u63a5\u6216\u65ad\u5f00\u8fde\u63a5\u3002 – \u6570\u636e\u63a5\u6536\u4e8b\u4ef6：\u5ba2\u6237\u7aef\u63a5\u6536\u5230\u670d\u52a1\u5668\u53d1\u9001\u7684\u6570\u636e\u3002 – \u7528\u6237\u64cd\u4f5c\u4e8b\u4ef6：\u4f8b\u5982\u7528\u6237\u53d1\u9001\u6d88\u606f\u3001\u7528\u6237\u72b6\u6001\u6539\u53d8\u7b49\u3002 <\/p>\n

                7.2 \u6784\u5efa\u9ad8\u6548\u7387\u7684\u4e8b\u4ef6\u76d1\u542c\u5668 <\/h3>\n

                \u4e3a\u4e86\u786e\u4fdd\u5b9e\u65f6\u901a\u4fe1\u7cfb\u7edf\u7684\u6548\u7387\u548c\u54cd\u5e94\u901f\u5ea6，\u6784\u5efa\u9ad8\u6548\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\u81f3\u5173\u91cd\u8981\u3002 <\/p>\n

                7.2.1 \u670d\u52a1\u5668\u7aef\u4e8b\u4ef6\u76d1\u542c\u7684\u4f18\u5316\u7b56\u7565 <\/h4>\n

                \u670d\u52a1\u5668\u7aef\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\u9700\u8981\u80fd\u591f\u5feb\u901f\u51c6\u786e\u5730\u5904\u7406\u5927\u91cf\u4e8b\u4ef6，\u4f18\u5316\u7b56\u7565\u5305\u62ec： – \u4f7f\u7528\u975e\u963b\u585eIO\u548c\u4e8b\u4ef6\u5faa\u73af\u673a\u5236\u6765\u5904\u7406\u5e76\u53d1\u3002 – \u5bf9\u4e8b\u4ef6\u8fdb\u884c\u5206\u7c7b\u5904\u7406，\u4f18\u5148\u54cd\u5e94\u5173\u952e\u4e8b\u4ef6\u3002 – \u4f7f\u7528\u4e8b\u4ef6\u961f\u5217\u7ba1\u7406\u4e8b\u4ef6\u5904\u7406，\u9632\u6b62\u7cfb\u7edf\u8fc7\u8f7d\u3002 <\/p>\n

                \u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528Node.js\u7684\u975e\u963b\u585eIO\u793a\u4f8b： <\/p>\n

                const net = require('net');<\/p>\n

                const server = net.createServer((socket) => {
                \n console.log('client connected');<\/p>\n

                \/\/ \u4e8b\u4ef6\u76d1\u542c\u5668
                \n socket.on('data', (data) => {
                \n console.log(`data received: ${data}`);
                \n });<\/p>\n

                socket.on('end', () => {
                \n console.log('client disconnected');
                \n });
                \n});<\/p>\n

                server.listen(8124, () => {
                \n console.log('server bound');
                \n});<\/p>\n

                7.2.2 \u5ba2\u6237\u7aef\u4e8b\u4ef6\u5904\u7406\u7684\u6027\u80fd\u63d0\u5347 <\/h4>\n

                \u5ba2\u6237\u7aef\u7684\u4e8b\u4ef6\u5904\u7406\u9700\u8981\u4fdd\u8bc1\u6d41\u7545\u7684\u7528\u6237\u4f53\u9a8c，\u6027\u80fd\u63d0\u5347\u7b56\u7565\u5305\u62ec： – \u4f7f\u7528\u5f02\u6b65\u7f16\u7a0b\u6a21\u578b\u51cf\u5c11UI\u963b\u585e\u3002 – \u4f18\u5316DOM\u64cd\u4f5c，\u51cf\u5c11\u91cd\u7ed8\u548c\u91cd\u6392\u3002 – \u5408\u7406\u4f7f\u7528Web Workers\u6765\u5904\u7406\u590d\u6742\u6216\u8017\u65f6\u7684\u8ba1\u7b97\u4efb\u52a1\u3002 <\/p>\n

                \u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528JavaScript\u6dfb\u52a0\u4e8b\u4ef6\u76d1\u542c\u5668\u5e76\u5904\u7406\u6d88\u606f\u7684\u7b80\u5355\u793a\u4f8b： <\/p>\n

                <!DOCTYPE html>
                \n<html lang="en">
                \n<head>
                \n <meta charset="UTF-8">
                \n <title>Event Listener Example<\/title>
                \n<\/head>
                \n<body>
                \n <button id="btn">Send Message<\/button><\/p>\n

                <script>
                \n \/\/ \u83b7\u53d6\u6309\u94ae\u5143\u7d20
                \n var btn = document.getElementById('btn');
                \n \/\/ \u4e3a\u6309\u94ae\u6dfb\u52a0\u70b9\u51fb\u4e8b\u4ef6\u76d1\u542c\u5668
                \n btn.addEventListener('click', function() {
                \n alert('Message sent!');
                \n });
                \n <\/script>
                \n<\/body>
                \n<\/html><\/p>\n

                \u901a\u8fc7\u4ee5\u4e0a\u793a\u4f8b\u53ef\u4ee5\u770b\u51fa，\u65e0\u8bba\u662f\u670d\u52a1\u5668\u7aef\u8fd8\u662f\u5ba2\u6237\u7aef，\u4e8b\u4ef6\u76d1\u542c\u5668\u7684\u6784\u5efa\u90fd\u9700\u8981\u7efc\u5408\u8003\u8651\u8d44\u6e90\u5360\u7528\u3001\u54cd\u5e94\u901f\u5ea6\u3001\u7528\u6237\u4f53\u9a8c\u7b49\u56e0\u7d20，\u624d\u80fd\u786e\u4fdd\u5b9e\u65f6\u901a\u4fe1\u7cfb\u7edf\u7684\u9ad8\u6548\u8fd0\u4f5c\u3002 <\/p>\n

                \u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90，\u70b9\u51fb\u83b7\u53d6 \"menu-r.4af5f7ec.gif\"<\/p>\n

                \u7b80\u4ecb：\u670d\u52a1\u5668\u53cd\u63a8\u6280\u672f\u662f\u5373\u65f6\u901a\u4fe1\u7684\u6838\u5fc3\u6280\u672f，\u5b83\u5141\u8bb8\u670d\u52a1\u5668\u4e3b\u52a8\u5411\u5ba2\u6237\u7aef\u63a8\u9001\u6570\u636e，\u5b9e\u73b0\u65e0\u9700\u5237\u65b0\u5373\u53ef\u5b9e\u65f6\u63a5\u6536\u6d88\u606f\u7684\u804a\u5929\u7cfb\u7edf\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5229\u7528DWR\u6846\u67b6\u5b9e\u73b0\u8fd9\u79cd\u6280\u672f，\u6db5\u76d6\u4eceDWR\u914d\u7f6e\u3001JavaBean\u6e90\u6587\u4ef6\u521b\u5efa\u3001\u670d\u52a1\u5668\u7aef\u804a\u5929\u670d\u52a1\u7f16\u5199\u5230\u5ba2\u6237\u7aef\u9875\u9762\u4ee3\u7801\u5b9e\u73b0\u7684\u5168\u8fc7\u7a0b，\u540c\u65f6\u4e5f\u5f3a\u8c03\u4e86\u5b9e\u65f6\u6d88\u606f\u63a8\u9001\u7684\u5b9e\u73b0\u7ec6\u8282，\u5305\u62ec\u4e8b\u4ef6\u76d1\u542c\u548c\u63a8\u9001\u673a\u5236\u3002\u5bf9\u4e8e\u5927\u89c4\u6a21\u7528\u6237\u7cfb\u7edf，\u6587\u7ae0\u8fd8\u63d0\u5230\u4e86\u9700\u8981\u8003\u8651\u7684\u9ad8\u7ea7\u8bdd\u9898，\u4f8b\u5982\u8d1f\u8f7d\u5747\u8861\u3001\u6d88\u606f\u961f\u5217\u4ee5\u53ca\u6027\u80fd\u4f18\u5316，\u4ee5\u53ca\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u7684\u5b89\u5168\u6027\u3001\u9519\u8bef\u5904\u7406\u548c\u8de8\u57df\u652f\u6301\u7b49\u95ee\u9898\u3002 <\/p>\n

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