{"id":48375,"date":"2025-07-30T11:42:33","date_gmt":"2025-07-30T03:42:33","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/48375.html"},"modified":"2025-07-30T11:42:33","modified_gmt":"2025-07-30T03:42:33","slug":"qt-tcp%e6%9c%8d%e5%8a%a1%e5%99%a8%e6%9e%84%e5%bb%ba%e5%8f%8a%e7%bd%91%e7%bb%9c%e9%80%9a%e4%bf%a1%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/48375.html","title":{"rendered":"QT TCP\u670d\u52a1\u5668\u6784\u5efa\u53ca\u7f51\u7edc\u901a\u4fe1\u5b9e\u73b0"},"content":{"rendered":"<p>  \u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90&#xff0c;\u70b9\u51fb\u83b7\u53d6  <img decoding=\"async\" alt=\"menu-r.4af5f7ec.gif\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250730034231-688994a7a5bea.gif\" style=\"width:16px;margin-left:4px;vertical-align:text-bottom;cursor:text\" \/> <\/p>\n<p> \u7b80\u4ecb&#xff1a;QT TCP Server\u662f\u4e00\u4e2a\u57fa\u4e8eQT\u5e93\u7684\u7f51\u7edc\u901a\u4fe1\u7a0b\u5e8f&#xff0c;\u65e8\u5728\u5b9e\u73b0\u9ad8\u6548\u3001\u8de8\u5e73\u53f0\u7684TCP\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u901a\u4fe1\u3002\u672c\u6559\u7a0b\u5c06\u6df1\u5165\u63a2\u8ba8QT\u7f51\u7edc\u6a21\u5757\u7684\u4f7f\u7528&#xff0c;\u5305\u62ecQTcpServer\u548cQTcpSocket\u7c7b\u7684\u5b9e\u73b0\u3001\u4fe1\u53f7\u548c\u69fd\u673a\u5236\u7684\u96c6\u6210\u3001\u6570\u636e\u6536\u53d1\u5904\u7406\u3001\u9519\u8bef\u5904\u7406\u3001\u591a\u7ebf\u7a0b\u7f16\u7a0b\u3001\u5f02\u6b65\u64cd\u4f5c\u3001\u5185\u5b58\u7ba1\u7406\u3001\u5b89\u5168\u6027\u4e0e\u6027\u80fd\u4f18\u5316\u4ee5\u53ca\u7f16\u7801\u548c\u89e3\u7801\u9700\u6c42\u3002\u901a\u8fc7\u8fd9\u4e9b\u6280\u672f\u8981\u70b9&#xff0c;\u5f00\u53d1\u8005\u53ef\u4ee5\u521b\u5efa\u51fa\u6ee1\u8db3\u5404\u79cd\u7f51\u7edc\u901a\u4fe1\u9700\u6c42\u7684\u9ad8\u6027\u80fdQT TCP\u670d\u52a1\u5668\u3002  <img decoding=\"async\" alt=\"QT TCP Server\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250730034231-688994a7c0f92.png\" \/> <\/p>\n<h2> 1. QT\u7f51\u7edc\u6a21\u5757\u57fa\u7840\u548cTCP\u670d\u52a1\u5668\u6784\u5efa <\/h2>\n<h3> 1.1 QT\u7f51\u7edc\u6a21\u5757\u6982\u8ff0 <\/h3>\n<h4> 1.1.1 QT\u7f51\u7edc\u6a21\u5757\u67b6\u6784\u89e3\u6790 <\/h4>\n<p> Qt\u7f51\u7edc\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u5957\u9ad8\u5c42\u6b21\u7684API\u7528\u4e8e\u7f51\u7edc\u7f16\u7a0b&#xff0c;\u7b80\u5316\u4e86\u7f51\u7edc\u64cd\u4f5c\u7684\u590d\u6742\u6027\u3002\u5176\u67b6\u6784\u4e3b\u8981\u5305\u62ec  QTcpSocket  \u3001  QUdpSocket  \u3001  QTcpServer  \u548c  QUdpServer  \u7b49\u7c7b\u3002\u8fd9\u4e9b\u7c7b\u5c01\u88c5\u4e86\u5957\u63a5\u5b57\u7f16\u7a0b\u7684\u5e95\u5c42\u7ec6\u8282&#xff0c;\u652f\u6301\u57fa\u4e8eTCP\/IP\u548cUDP\/IP\u534f\u8bae\u7684\u7f51\u7edc\u901a\u4fe1\u3002 <\/p>\n<h4> 1.1.2 QT\u7f51\u7edc\u6a21\u5757\u4e2d\u7684\u4e3b\u8981\u7c7b\u548c\u5bf9\u8c61 <\/h4>\n<p> QTcpSocket\u548cQUdpSocket\u662f\u5904\u7406\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u4e3b\u8981\u5bf9\u8c61\u3002QTcpServer\u7528\u4e8e\u76d1\u542c\u7aef\u53e3\u5e76\u63a5\u53d7\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42&#xff0c;\u800cQUdpServer\u5219\u7528\u4e8e\u5904\u7406UDP\u6570\u636e\u5305\u3002\u6bcf\u4e2a\u7c7b\u90fd\u63d0\u4f9b\u4e86\u4e00\u5957\u4fe1\u53f7\u4e0e\u69fd\u63a5\u53e3&#xff0c;\u7528\u4e8e\u5904\u7406\u8fde\u63a5\u3001\u6570\u636e\u4f20\u8f93\u53ca\u9519\u8bef\u4e8b\u4ef6\u3002 <\/p>\n<h3> 1.2 TCP\u670d\u52a1\u5668\u7684\u642d\u5efa\u6b65\u9aa4 <\/h3>\n<h4> 1.2.1 QTcpServer\u7c7b\u7684\u57fa\u672c\u4f7f\u7528\u65b9\u6cd5 <\/h4>\n<p> \u642d\u5efaTCP\u670d\u52a1\u5668\u9996\u5148\u8981\u521b\u5efa  QTcpServer  \u5b9e\u4f8b&#xff0c;\u5e76\u8bbe\u7f6e\u597d\u76d1\u542c\u7684\u7aef\u53e3\u3002\u7136\u540e\u5c06\u4fe1\u53f7\u548c\u69fd\u8fde\u63a5\u8d77\u6765&#xff0c;\u4ee5\u4fbf\u5728\u6709\u65b0\u7684\u8fde\u63a5\u8bf7\u6c42\u65f6\u80fd\u591f\u54cd\u5e94\u3002\u670d\u52a1\u5668\u63a5\u53d7\u8fde\u63a5\u540e&#xff0c;\u53ef\u4ee5\u4f7f\u7528  QTcpSocket  \u5b9e\u4f8b\u6765\u5904\u7406\u6570\u636e\u7684\u8bfb\u5199\u3002 <\/p>\n<h4> 1.2.2 \u7f51\u7edc\u5730\u5740\u548c\u7aef\u53e3\u7684\u914d\u7f6e <\/h4>\n<p> \u914d\u7f6e\u670d\u52a1\u5668\u7684\u7f51\u7edc\u5730\u5740\u548c\u7aef\u53e3\u662f\u4e00\u4e2a\u57fa\u672c\u6b65\u9aa4\u3002\u901a\u5e38\u4f7f\u7528  QHostAddress  \u6307\u5b9a\u670d\u52a1\u5668\u7684IP\u5730\u5740&#xff0c;\u4f7f\u7528\u6574\u6570\u8bbe\u7f6e\u76d1\u542c\u7684\u7aef\u53e3\u3002\u670d\u52a1\u5668\u53ef\u4ee5\u5728\u591a\u4e2a\u5730\u5740\u548c\u7aef\u53e3\u4e0a\u76d1\u542c&#xff0c;\u4e5f\u53ef\u4ee5\u8bbe\u7f6e\u4e3a\u53ea\u76d1\u542cIPv6\u6216IPv4\u3002 <\/p>\n<h4> 1.2.3 \u8fde\u63a5\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u7684\u542f\u52a8\u8fc7\u7a0b <\/h4>\n<p> \u670d\u52a1\u5668\u542f\u52a8\u76d1\u542c\u540e&#xff0c;\u5f53\u6709\u5ba2\u6237\u7aef\u53d1\u8d77\u8fde\u63a5\u65f6&#xff0c;  QTcpServer  \u4f1a\u4ea7\u751f\u4e00\u4e2a  newConnection()  \u4fe1\u53f7\u3002\u901a\u8fc7\u8fde\u63a5\u6b64\u4fe1\u53f7\u5230\u69fd\u51fd\u6570&#xff0c;\u6211\u4eec\u53ef\u4ee5\u8c03\u7528  nextPendingConnection()  \u65b9\u6cd5\u6765\u63a5\u53d7\u65b0\u7684\u5ba2\u6237\u7aef\u8fde\u63a5&#xff0c;\u5e76\u8fdb\u4e00\u6b65\u83b7\u53d6  QTcpSocket  \u5b9e\u4f8b\u8fdb\u884c\u6570\u636e\u901a\u4fe1\u3002 <\/p>\n<p> \u4ee5\u4e0a\u662f\u6784\u5efa\u4e00\u4e2a\u57fa\u7840TCP\u670d\u52a1\u5668\u7684\u51e0\u4e2a\u5173\u952e\u6b65\u9aa4&#xff0c;\u63a5\u4e0b\u6765\u7684\u7ae0\u8282\u5c06\u5bf9\u8fd9\u4e9b\u5185\u5bb9\u8fdb\u884c\u66f4\u8be6\u7ec6\u7684\u63a2\u8ba8&#xff0c;\u5e76\u63d0\u4f9b\u5b9e\u8df5\u4e2d\u7684\u6700\u4f73\u5e94\u7528\u6848\u4f8b\u3002 <\/p>\n<h2> 2. QTcpServer\u7c7b\u7684\u4f7f\u7528\u548c\u4fe1\u53f7\u8fde\u63a5 <\/h2>\n<h3> 2.1 QTcpServer\u7c7b\u7684\u8be6\u7ec6\u89e3\u8bfb <\/h3>\n<h4> 2.1.1 QTcpServer\u7c7b\u7684\u6784\u9020\u51fd\u6570\u548c\u5c5e\u6027 <\/h4>\n<p> QTcpServer\u7c7b\u662f\u7528\u4e8e\u5b9e\u73b0\u57fa\u4e8eTCP\u534f\u8bae\u7684\u670d\u52a1\u5668\u7aef\u901a\u4fe1\u7684\u6838\u5fc3\u7c7b&#xff0c;\u5b83\u5c5e\u4e8eQt\u7684\u7f51\u7edc\u6a21\u5757\u3002\u6784\u9020\u51fd\u6570\u662f\u521b\u5efa\u670d\u52a1\u5668\u5bf9\u8c61\u7684\u5165\u53e3&#xff0c;\u901a\u8fc7\u5b83\u53ef\u4ee5\u521d\u59cb\u5316\u4e00\u4e2a\u76d1\u542c\u6307\u5b9a\u7aef\u53e3\u7b49\u5f85\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u670d\u52a1\u5668\u5b9e\u4f8b\u3002QTcpServer\u7c7b\u63d0\u4f9b\u4e86\u51e0\u4e2a\u91cd\u8981\u7684\u5c5e\u6027&#xff0c;\u4f8b\u5982  serverPort  &#xff0c;\u53ef\u4ee5\u7528\u6765\u83b7\u53d6\u670d\u52a1\u5668\u5f53\u524d\u76d1\u542c\u7684\u7aef\u53e3&#xff0c;  maxPendingConnections  \u7528\u4e8e\u8bbe\u7f6e\u6700\u5927\u7b49\u5f85\u8fde\u63a5\u6570&#xff0c;\u4ee5\u53ca  hasPendingConnections()  \u65b9\u6cd5\u7528\u4e8e\u68c0\u67e5\u662f\u5426\u8fd8\u6709\u672a\u5904\u7406\u7684\u8fde\u63a5\u8bf7\u6c42\u3002 <\/p>\n<p>QTcpServer::QTcpServer(QObject *parent &#061; nullptr); \/\/ \u6784\u9020\u51fd\u6570\u5b9a\u4e49<br \/>\nint QTcpServer::serverPort() const; \/\/ \u83b7\u53d6\u670d\u52a1\u5668\u76d1\u542c\u7aef\u53e3<br \/>\nint QTcpServer::maxPendingConnections() const; \/\/ \u83b7\u53d6\u6700\u5927\u7b49\u5f85\u8fde\u63a5\u6570<br \/>\nvoid QTcpServer::setMaxPendingConnections(int num); \/\/ \u8bbe\u7f6e\u6700\u5927\u7b49\u5f85\u8fde\u63a5\u6570<br \/>\nbool QTcpServer::hasPendingConnections() const; \/\/ \u68c0\u67e5\u662f\u5426\u6709\u7b49\u5f85\u8fde\u63a5<\/p>\n<h4> 2.1.2 \u65b0\u589e\u8fde\u63a5\u7684\u5904\u7406\u548c\u65ad\u5f00\u8fde\u63a5\u7684\u54cd\u5e94 <\/h4>\n<p> \u5f53\u6709\u65b0\u7684\u5ba2\u6237\u7aef\u8bf7\u6c42\u8fde\u63a5\u65f6&#xff0c;QTcpServer\u4f1a\u89e6\u53d1  newConnection()  \u4fe1\u53f7\u3002\u5f00\u53d1\u8005\u9700\u8981\u8fde\u63a5\u8fd9\u4e2a\u4fe1\u53f7\u5230\u76f8\u5e94\u7684\u69fd\u51fd\u6570\u6765\u5904\u7406\u65b0\u7684\u8fde\u63a5\u3002\u800c\u5f53\u4e00\u4e2a\u8fde\u63a5\u65ad\u5f00\u65f6&#xff0c;\u670d\u52a1\u5668\u4e5f\u4f1a\u53d1\u51fa  clientDisconnected()  \u4fe1\u53f7\u3002\u8fd9\u4e24\u4e2a\u4fe1\u53f7\u662f\u5904\u7406\u5ba2\u6237\u7aef\u8fde\u63a5\u548c\u65ad\u5f00\u4e8b\u4ef6\u7684\u4e3b\u8981\u673a\u5236\u3002 <\/p>\n<p>\/\/ \u4fe1\u53f7\u793a\u4f8b<br \/>\nvoid newConnection(); \/\/ \u65b0\u7684\u8fde\u63a5\u5df2\u5efa\u7acb\u65f6\u53d1\u51fa<br \/>\nvoid clientDisconnected(); \/\/ \u5ba2\u6237\u7aef\u5df2\u65ad\u5f00\u8fde\u63a5\u65f6\u53d1\u51fa<\/p>\n<p>\/\/\u69fd\u51fd\u6570\u793a\u4f8b<br \/>\nvoid onNewConnection() \/\/ \u5904\u7406\u65b0\u7684\u8fde\u63a5<br \/>\n{<br \/>\n    \/\/ \u8fde\u63a5\u65b0\u7684\u5ba2\u6237\u7aefsocket\u5230QTcpServer<br \/>\n    QTcpSocket *clientSocket &#061; server-&gt;nextPendingConnection();<br \/>\n    \/\/ \u8fdb\u884c\u5176\u4ed6\u64cd\u4f5c<br \/>\n}<\/p>\n<p>void onClientDisconnected() \/\/ \u5904\u7406\u5ba2\u6237\u7aef\u65ad\u5f00\u8fde\u63a5<br \/>\n{<br \/>\n    \/\/ \u6e05\u7406\u8d44\u6e90\u548c\u5904\u7406\u540e\u7eed\u903b\u8f91<br \/>\n}<\/p>\n<h3> 2.2 \u4fe1\u53f7\u548c\u69fd\u673a\u5236\u7684\u5e94\u7528 <\/h3>\n<h4> 2.2.1 \u4fe1\u53f7\u548c\u69fd\u7684\u57fa\u672c\u539f\u7406 <\/h4>\n<p> Qt\u4e2d\u7684\u4fe1\u53f7\u548c\u69fd\u662f\u4e00\u79cd\u9ad8\u7ea7\u63a5\u53e3&#xff0c;\u7528\u4e8e\u5bf9\u8c61\u95f4\u7684\u901a\u4fe1&#xff0c;\u5141\u8bb8\u5bf9\u8c61\u5728\u7279\u5b9a\u4e8b\u4ef6\u53d1\u751f\u65f6\u901a\u77e5\u5176\u4ed6\u5bf9\u8c61\u3002\u4fe1\u53f7\u662f\u5f53\u67d0\u4e2a\u4e8b\u4ef6\u53d1\u751f\u65f6&#xff0c;\u7531\u5bf9\u8c61\u53d1\u51fa\u7684\u7c7b\u578b\u5b89\u5168\u7684\u5e7f\u64ad\u5668\u3002\u69fd\u662f\u53ef\u88ab\u8c03\u7528\u4ee5\u54cd\u5e94\u4fe1\u53f7\u7684\u5bf9\u8c61\u6210\u5458\u51fd\u6570\u3002\u4fe1\u53f7\u548c\u69fd\u673a\u5236\u662f\u4e8b\u4ef6\u9a71\u52a8\u7f16\u7a0b\u7684\u57fa\u77f3\u3002 <\/p>\n<h4> 2.2.2 \u4fe1\u53f7\u4e0e\u69fd\u8fde\u63a5\u7684\u6700\u4f73\u5b9e\u8df5 <\/h4>\n<p> \u5728\u8fde\u63a5\u4fe1\u53f7\u548c\u69fd\u65f6&#xff0c;\u9700\u8981\u786e\u4fdd\u5b83\u4eec\u7684\u53c2\u6570\u7c7b\u578b\u5339\u914d\u3002\u8fd9\u662f\u56e0\u4e3a\u5728Qt\u4e2d&#xff0c;\u4fe1\u53f7\u548c\u69fd\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u662f\u7c7b\u578b\u5b89\u5168\u7684\u3002\u901a\u5e38&#xff0c;\u6700\u4f73\u5b9e\u8df5\u662f\u5b9a\u4e49\u6e05\u6670\u7684\u63a5\u53e3&#xff0c;\u6bd4\u5982\u4f7f\u7528\u81ea\u5b9a\u4e49\u7684\u4fe1\u53f7\u7c7b\u578b\u548c\u679a\u4e3e\u503c&#xff0c;\u4ee5\u4fbf\u5728\u4e0d\u540c\u7684\u5bf9\u8c61\u548c\u7c7b\u4e4b\u95f4\u5efa\u7acb\u6e05\u6670\u3001\u53ef\u7ef4\u62a4\u7684\u901a\u4fe1\u94fe\u8def\u3002 <\/p>\n<h4> 2.2.3 \u4fe1\u53f7\u548c\u69fd\u5728TCP\u670d\u52a1\u5668\u4e2d\u7684\u5e94\u7528 <\/h4>\n<p> \u5728TCP\u670d\u52a1\u5668\u5e94\u7528\u4e2d&#xff0c;\u4fe1\u53f7\u548c\u69fd\u673a\u5236\u662f\u7ba1\u7406\u7f51\u7edc\u4e8b\u4ef6\u7684\u5173\u952e\u3002\u4f8b\u5982&#xff0c;\u5f53\u670d\u52a1\u5668\u63a5\u53d7\u4e00\u4e2a\u65b0\u8fde\u63a5\u6216\u4e00\u4e2a\u73b0\u6709\u8fde\u63a5\u65ad\u5f00\u65f6&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u4fe1\u53f7\u548c\u69fd\u673a\u5236\u6765\u901a\u77e5\u4e3b\u7a0b\u5e8f\u5e76\u6267\u884c\u76f8\u5e94\u7684\u903b\u8f91\u3002 <\/p>\n<p>\/\/ \u5c06\u4fe1\u53f7\u548c\u69fd\u8fde\u63a5\u8d77\u6765<br \/>\nconnect(server, SIGNAL(newConnection()), this, SLOT(onNewConnection()));<br \/>\nconnect(server, SIGNAL(clientDisconnected()), this, SLOT(onClientDisconnected()));<\/p>\n<p>\/\/ \u670d\u52a1\u5668\u5c06\u8c03\u7528\u6b64\u69fd\u6765\u5904\u7406\u65b0\u8fde\u63a5<br \/>\nvoid onNewConnection() {<br \/>\n    \/\/ \u7ba1\u7406\u65b0\u7684\u5ba2\u6237\u7aefsocket<br \/>\n    QTcpSocket *client &#061; server-&gt;nextPendingConnection();<br \/>\n    \/\/ &#8230;<br \/>\n}<\/p>\n<p>\/\/ \u670d\u52a1\u5668\u5c06\u8c03\u7528\u6b64\u69fd\u4ee5\u54cd\u5e94\u5ba2\u6237\u7aef\u65ad\u5f00\u8fde\u63a5<br \/>\nvoid onClientDisconnected() {<br \/>\n    \/\/ \u6e05\u7406\u64cd\u4f5c&#8230;<br \/>\n}<\/p>\n<p> \u4f7f\u7528\u4fe1\u53f7\u548c\u69fd\u673a\u5236\u53ef\u4ee5\u4fdd\u6301\u4ee3\u7801\u7684\u6a21\u5757\u5316\u548c\u53ef\u7ef4\u62a4\u6027&#xff0c;\u540c\u65f6\u63d0\u4f9b\u5f3a\u5927\u7684\u4e8b\u4ef6\u9a71\u52a8\u7f16\u7a0b\u80fd\u529b&#xff0c;\u8fd9\u5bf9\u4e8e\u590d\u6742\u7f51\u7edc\u901a\u4fe1\u5e94\u7528\u6765\u8bf4\u81f3\u5173\u91cd\u8981\u3002\u5728\u540e\u7eed\u7684\u7ae0\u8282\u4e2d&#xff0c;\u6211\u4eec\u5c06\u8be6\u7ec6\u63a2\u8ba8\u5982\u4f55\u5728\u5b9e\u9645\u7684TCP\u670d\u52a1\u5668\u5e94\u7528\u4e2d\u5b9e\u73b0\u548c\u4f18\u5316\u8fd9\u79cd\u673a\u5236\u3002 <\/p>\n<h2> 3. \u6570\u636e\u7684\u8bfb\u53d6\u548c\u5199\u5165\u64cd\u4f5c <\/h2>\n<h4> 3.1 \u6570\u636e\u8bfb\u53d6\u673a\u5236 <\/h4>\n<p> \u5728\u6784\u5efa\u57fa\u4e8eTCP\u7684\u670d\u52a1\u5668\u65f6&#xff0c;\u6570\u636e\u7684\u8bfb\u53d6\u673a\u5236\u662f\u6838\u5fc3\u7ec4\u4ef6\u4e4b\u4e00\u3002\u5ba2\u6237\u7aef\u8fde\u63a5\u670d\u52a1\u5668\u540e&#xff0c;\u670d\u52a1\u7aef\u9700\u8981\u6709\u6548\u5730\u8bfb\u53d6\u548c\u5904\u7406\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e\u3002\u5728QT\u4e2d&#xff0c;  QTcpServer  \u7c7b\u63d0\u4f9b\u4e86\u4e00\u5957\u673a\u5236\u6765\u5904\u7406\u8fd9\u79cd\u901a\u4fe1\u3002 <\/p>\n<h5> 3.1.1 \u5904\u7406\u65b0\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u6b65\u9aa4 <\/h5>\n<p> \u6bcf\u5f53\u4e00\u4e2a\u5ba2\u6237\u7aef\u6210\u529f\u8fde\u63a5\u5230\u670d\u52a1\u5668\u65f6&#xff0c;  QTcpServer  \u5bf9\u8c61\u4f1a\u53d1\u5c04  newConnection()  \u4fe1\u53f7\u3002\u4e3a\u4e86\u5904\u7406\u65b0\u8fde\u63a5&#xff0c;\u9700\u8981\u901a\u8fc7\u4fe1\u53f7\u4e0e\u69fd\u673a\u5236\u8fde\u63a5\u5230\u76f8\u5e94\u7684\u69fd\u51fd\u6570\u4e2d\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u5904\u7406\u65b0\u8fde\u63a5\u7684\u793a\u4f8b\u4ee3\u7801&#xff1a; <\/p>\n<p>void TcpServer::incomingConnection(qintptr socketDescriptor) {<br \/>\n    QTcpSocket *client &#061; new QTcpSocket(this);<br \/>\n    client-&gt;setSocketDescriptor(socketDescriptor);<br \/>\n    connect(client, &amp;QTcpSocket::readyRead, this, &amp;TcpServer::handleReadyRead);<br \/>\n    connect(client, &amp;QTcpSocket::disconnected, this, &amp;TcpServer::removeClient);<br \/>\n    clients &lt;&lt; client;<br \/>\n}<\/p>\n<p>void TcpServer::handleReadyRead() {<br \/>\n    QTcpSocket *client &#061; qobject_cast&lt;QTcpSocket *&gt;(sender());<br \/>\n    if (client) {<br \/>\n        QByteArray data &#061; client-&gt;readAll();<br \/>\n        \/\/ \u5904\u7406\u63a5\u6536\u5230\u7684\u6570\u636e<br \/>\n    }<br \/>\n}<\/p>\n<p> \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d&#xff0c;\u6bcf\u6b21\u6709\u65b0\u8fde\u63a5\u65f6&#xff0c;\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684  QTcpSocket  \u5b9e\u4f8b&#xff0c;\u5e76\u5c06\u5176\u4e0e  readyRead  \u4fe1\u53f7\u548c  handleReadyRead  \u69fd\u51fd\u6570\u8fde\u63a5&#xff0c;\u4ee5\u4fbf\u5728\u6709\u6570\u636e\u53ef\u8bfb\u65f6\u5904\u7406\u5b83\u3002\u540c\u65f6&#xff0c;\u4f7f\u7528  disconnected  \u4fe1\u53f7\u6765\u65ad\u5f00\u8fde\u63a5\u65f6\u79fb\u9664\u5ba2\u6237\u7aef\u3002 <\/p>\n<h5> 3.1.2 \u8bfb\u53d6\u5ba2\u6237\u7aef\u6570\u636e\u7684\u65b9\u6cd5\u548c\u6280\u5de7 <\/h5>\n<p> QTcpServer\u5141\u8bb8\u670d\u52a1\u5668\u7aef\u5728\u591a\u4e2a\u5ba2\u6237\u7aef\u4e0a\u8fdb\u884c\u5e76\u53d1\u8bfb\u53d6\u64cd\u4f5c\u3002\u5904\u7406\u6570\u636e\u65f6&#xff0c;\u63a8\u8350\u4f7f\u7528\u4fe1\u53f7\u4e0e\u69fd\u673a\u5236&#xff0c;\u8fd9\u6837\u53ef\u4ee5\u5728\u6570\u636e\u5230\u8fbe\u65f6\u53ca\u65f6\u8fdb\u884c\u5904\u7406\u3002 <\/p>\n<p> \u4f7f\u7528  QTcpSocket  \u7684  readLine()  \u6216  readAll()  \u65b9\u6cd5\u53ef\u4ee5\u8bfb\u53d6\u6570\u636e&#xff0c;\u8fd9\u91cc\u7684\u5173\u952e\u662f\u786e\u4fdd\u6570\u636e\u8bfb\u53d6\u4e0e\u6570\u636e\u53d1\u9001\u5339\u914d&#xff0c;\u907f\u514d\u51fa\u73b0\u6570\u636e\u4e0d\u5b8c\u6574\u6216\u683c\u5f0f\u9519\u8bef\u7684\u95ee\u9898\u3002\u5bf9\u4e8e\u5927\u5757\u6570\u636e&#xff0c;\u66f4\u63a8\u8350\u4f7f\u7528\u5206\u6bb5\u8bfb\u53d6\u7684\u65b9\u6cd5&#xff0c;\u786e\u4fdd\u6570\u636e\u5b8c\u6574\u6027\u3002 <\/p>\n<p>void TcpServer::handleReadyRead() {<br \/>\n    QTcpSocket *client &#061; qobject_cast&lt;QTcpSocket *&gt;(sender());<br \/>\n    if (client) {<br \/>\n        while (client-&gt;bytesAvailable()) {<br \/>\n            QByteArray data &#061; client-&gt;read(1024); \/\/ \u4e00\u6b21\u6700\u591a\u8bfb\u53d61024\u5b57\u8282<br \/>\n            \/\/ \u5904\u7406\u63a5\u6536\u5230\u7684\u6570\u636e\u6bb5<br \/>\n        }<br \/>\n    }<br \/>\n}<\/p>\n<h4> 3.2 \u6570\u636e\u5199\u5165\u64cd\u4f5c <\/h4>\n<p> \u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e\u662f\u670d\u52a1\u5668\u63d0\u4f9b\u670d\u52a1\u7684\u57fa\u672c\u529f\u80fd\u4e4b\u4e00\u3002QTcpServer\u53ef\u4ee5\u652f\u6301\u591a\u5ba2\u6237\u7aef&#xff0c;\u6bcf\u4e2a\u5ba2\u6237\u7aef\u90fd\u662f\u4e00\u4e2a  QTcpSocket  \u5b9e\u4f8b\u3002\u670d\u52a1\u5668\u53ef\u4ee5\u5411\u6240\u6709\u6216\u7279\u5b9a\u7684\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e\u3002 <\/p>\n<h5> 3.2.1 \u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e\u7684\u673a\u5236 <\/h5>\n<p> \u8981\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e&#xff0c;\u53ea\u9700\u8c03\u7528  QTcpSocket  \u7684  write()  \u65b9\u6cd5\u3002\u4f8b\u5982&#xff1a; <\/p>\n<p>void TcpServer::sendDataToClient(QTcpSocket *client, const QByteArray &amp;data) {<br \/>\n    client-&gt;write(data);<br \/>\n}<\/p>\n<p>\/\/ \u5047\u8bbe\u5ba2\u6237\u7aef\u5217\u8868\u5982\u4e0b<br \/>\nQList&lt;QTcpSocket*&gt; clients;<br \/>\n\/\/ \u5411\u6240\u6709\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e<br \/>\nfor (auto *client : clients) {<br \/>\n    sendDataToClient(client, &#034;Hello Client!&#034;);<br \/>\n}<\/p>\n<h5> 3.2.2 \u6570\u636e\u5206\u5305\u53d1\u9001\u548c\u63a5\u6536\u7684\u5b9e\u73b0 <\/h5>\n<p> \u5728\u6570\u636e\u4f20\u8f93\u4e2d&#xff0c;\u5206\u5305\u53d1\u9001\u662f\u5fc5\u987b\u7684&#xff0c;\u5c24\u5176\u662f\u5728\u4f20\u8f93\u5927\u6587\u4ef6\u65f6\u3002\u4e3a\u4e86\u9ad8\u6548\u5730\u5b9e\u73b0\u8fd9\u4e00\u70b9&#xff0c;\u53ef\u4ee5\u8bbe\u8ba1\u4e00\u4e2a\u534f\u8bae\u6765\u5c01\u88c5\u6570\u636e\u5305\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u6807\u5fd7\u3002\u4e00\u4e2a\u7b80\u5355\u7684\u5b9e\u73b0\u793a\u4f8b\u5982\u4e0b&#xff1a; <\/p>\n<p>void TcpServer::sendPackage(QTcpSocket *client, QByteArray &amp;data) {<br \/>\n    QByteArray package;<br \/>\n    \/\/ \u5305\u88c5\u6570\u636e<br \/>\n    package.append(&#034;BEGIN&#034;).append(data).append(&#034;END&#034;);<br \/>\n    sendDataToClient(client, package);<br \/>\n}<\/p>\n<p> \u5728\u5ba2\u6237\u7aef&#xff0c;\u9700\u8981\u89e3\u5305\u6570\u636e&#xff0c;\u8fd9\u901a\u5e38\u901a\u8fc7\u68c0\u6d4b\u6570\u636e\u5305\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u6807\u5fd7\u6765\u5b9e\u73b0\u3002 <\/p>\n<h5> 3.2.3 \u5904\u7406\u5927\u6587\u4ef6\u4f20\u8f93\u7684\u6280\u672f\u8981\u70b9 <\/h5>\n<p> \u5bf9\u4e8e\u5927\u6587\u4ef6\u7684\u4f20\u8f93&#xff0c;\u9700\u8981\u8003\u8651\u5185\u5b58\u6d88\u8017\u548c\u4f20\u8f93\u6548\u7387\u95ee\u9898\u3002\u4e00\u4e2a\u9ad8\u6548\u7684\u65b9\u5f0f\u662f\u5b9e\u73b0\u4e00\u4e2a\u7f13\u51b2\u673a\u5236&#xff0c;\u5206\u6279\u6b21\u5730\u8bfb\u53d6\u548c\u53d1\u9001\u6570\u636e&#xff0c;\u800c\u4e0d\u662f\u4e00\u6b21\u6027\u52a0\u8f7d\u6574\u4e2a\u6587\u4ef6\u5230\u5185\u5b58\u4e2d\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5185\u5b58\u6ea2\u51fa&#xff0c;\u5e76\u4e14\u53ef\u4ee5\u5229\u7528\u7f51\u7edc\u7684\u9ad8\u541e\u5410\u91cf\u3002 <\/p>\n<p>void TcpServer::sendLargeFile(QTcpSocket *client, const QString &amp;filePath) {<br \/>\n    QFile file(filePath);<br \/>\n    if (file.open(QIODevice::ReadOnly)) {<br \/>\n        QByteArray buffer(1024, &#039;\\\\0&#039;); \/\/ 1KB\u7f13\u51b2\u533a<br \/>\n        while (!file.atEnd()) {<br \/>\n            int readSize &#061; file.read(buffer.data(), buffer.size());<br \/>\n            buffer.resize(readSize);<br \/>\n            sendDataToClient(client, buffer);<br \/>\n        }<br \/>\n    }<br \/>\n}<\/p>\n<p> \u4ee5\u4e0a\u4ee3\u7801\u6bb5\u6f14\u793a\u4e86\u5982\u4f55\u4ece\u6587\u4ef6\u4e2d\u5206\u5757\u8bfb\u53d6\u6570\u636e&#xff0c;\u5e76\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u3002 <\/p>\n<h4> 3.3 \u5b9e\u73b0\u603b\u7ed3 <\/h4>\n<p> \u5728\u6570\u636e\u7684\u8bfb\u53d6\u548c\u5199\u5165\u64cd\u4f5c\u4e2d&#xff0c;\u6211\u4eec\u4e86\u89e3\u4e86QTcpServer\u7684\u57fa\u672c\u539f\u7406\u548c\u5177\u4f53\u5b9e\u73b0\u65b9\u6cd5\u3002\u638c\u63e1\u4e86\u5904\u7406\u65b0\u8fde\u63a5\u3001\u8bfb\u53d6\u548c\u5206\u5305\u53d1\u9001\u6570\u636e\u7684\u6280\u672f\u8981\u70b9&#xff0c;\u4e3a\u4e0b\u4e00\u6b65\u6df1\u5165\u63a2\u8ba8\u9519\u8bef\u5904\u7406\u3001\u5f02\u5e38\u7ba1\u7406\u548c\u6027\u80fd\u4f18\u5316\u6253\u4e0b\u4e86\u57fa\u7840\u3002\u672c\u7ae0\u8282\u901a\u8fc7\u4ee3\u7801\u793a\u4f8b\u548c\u903b\u8f91\u5206\u6790&#xff0c;\u63d0\u4f9b\u4e86\u5b9e\u7528\u7684\u6280\u672f\u53c2\u8003&#xff0c;\u786e\u4fdd\u4e86\u7f51\u7edc\u901a\u4fe1\u7684\u987a\u7545\u548c\u6570\u636e\u7684\u51c6\u786e\u4f20\u8f93\u3002 <\/p>\n<h2> 4. \u9519\u8bef\u5904\u7406\u548c\u5f02\u5e38\u7ba1\u7406 <\/h2>\n<h3> 4.1 \u9519\u8bef\u5904\u7406\u7b56\u7565 <\/h3>\n<h4> 4.1.1 \u6355\u83b7\u548c\u5904\u7406QTcpServer\u5185\u90e8\u9519\u8bef <\/h4>\n<p> \u5728\u5f00\u53d1TCP\u670d\u52a1\u5668\u7684\u8fc7\u7a0b\u4e2d&#xff0c;\u4e0d\u53ef\u907f\u514d\u5730\u4f1a\u9047\u5230\u5404\u79cd\u5185\u90e8\u9519\u8bef&#xff0c;\u4f8b\u5982\u7f51\u7edc\u4e2d\u65ad\u3001\u8fde\u63a5\u8d85\u65f6\u7b49\u3002\u4e3a\u4e86\u786e\u4fdd\u670d\u52a1\u5668\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027&#xff0c;\u5b9e\u73b0\u4e00\u4e2a\u6709\u6548\u7684\u9519\u8bef\u5904\u7406\u673a\u5236\u81f3\u5173\u91cd\u8981\u3002 <\/p>\n<p> QTcpServer\u63d0\u4f9b\u4e86\u591a\u79cd\u4fe1\u53f7&#xff0c;\u7528\u4e8e\u901a\u77e5\u5f00\u53d1\u8005\u670d\u52a1\u5668\u4e2d\u53d1\u751f\u7684\u9519\u8bef\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u5229\u7528\u8fd9\u4e9b\u4fe1\u53f7&#xff0c;\u5e76\u5c06\u5b83\u4eec\u8fde\u63a5\u5230\u69fd\u51fd\u6570\u4e2d\u8fdb\u884c\u76f8\u5e94\u7684\u5904\u7406\u3002 <\/p>\n<p> \u4ee5  error  \u4fe1\u53f7\u4e3a\u4f8b&#xff0c;\u8fd9\u4e2a\u4fe1\u53f7\u5728\u51fa\u73b0\u9519\u8bef\u65f6\u4f1a\u88ab\u53d1\u51fa\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u901a\u8fc7\u91cd\u5199  QTcpServer::error  \u65b9\u6cd5\u6765\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684\u9519\u8bef\u5904\u7406\u903b\u8f91\u3002 <\/p>\n<p>void TcpServer::error(QAbstractSocket::SocketError socketError) {<br \/>\n    switch(socketError) {<br \/>\n        case QAbstractSocket::NetworkError:<br \/>\n            qDebug() &lt;&lt; &#034;A network error occurred.&#034;;<br \/>\n            break;<br \/>\n        case QAbstractSocket::AddressInUseError:<br \/>\n            qDebug() &lt;&lt; &#034;The address is already in use.&#034;;<br \/>\n            break;<br \/>\n        \/\/ \u5176\u4ed6\u9519\u8bef\u7c7b\u578b\u5904\u7406<br \/>\n        default:<br \/>\n            qDebug() &lt;&lt; &#034;Unknown error occurred.&#034;;<br \/>\n    }<br \/>\n}<\/p>\n<p> \u5728\u4e0a\u8ff0\u4ee3\u7801\u6bb5\u4e2d&#xff0c;\u6211\u4eec\u901a\u8fc7  switch  \u8bed\u53e5\u9488\u5bf9\u4e0d\u540c\u7c7b\u578b\u7684  socketError  \u8fdb\u884c\u5904\u7406\u3002\u8fd9\u6837\u53ef\u4ee5\u5c06\u95ee\u9898\u7ec6\u5206\u4e3a\u66f4\u5177\u4f53\u7684\u9519\u8bef\u7c7b\u578b&#xff0c;\u5e76\u8fdb\u884c\u9488\u5bf9\u6027\u7684\u4fee\u590d\u6216\u5e94\u5bf9\u63aa\u65bd\u3002 <\/p>\n<h4> 4.1.2 \u5bf9\u5916\u90e8\u5f02\u5e38\u7684\u54cd\u5e94\u548c\u5904\u7406 <\/h4>\n<p> \u5916\u90e8\u5f02\u5e38\u5305\u62ec\u5ba2\u6237\u7aef\u5f02\u5e38\u65ad\u5f00\u8fde\u63a5\u3001\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e\u4e0d\u5b8c\u6574\u6216\u683c\u5f0f\u9519\u8bef\u7b49\u95ee\u9898\u3002\u8fd9\u7c7b\u5f02\u5e38\u5904\u7406\u9700\u8981\u7ed3\u5408QTcpServer\u7c7b\u63d0\u4f9b\u7684\u5176\u4ed6\u4fe1\u53f7&#xff0c;\u4f8b\u5982  readyRead  \u548c  disconnected  &#xff0c;\u4ee5\u53ca\u81ea\u5b9a\u4e49\u7684\u534f\u8bae\u903b\u8f91\u6765\u5b9e\u73b0\u3002 <\/p>\n<p> \u5f53\u5ba2\u6237\u7aef\u53d1\u9001\u6570\u636e\u65f6&#xff0c;  readyRead  \u4fe1\u53f7\u5c06\u88ab\u89e6\u53d1&#xff0c;\u670d\u52a1\u5668\u5e94\u8be5\u8bfb\u53d6\u6570\u636e\u5e76\u8fdb\u884c\u89e3\u6790\u3002\u5982\u679c\u6570\u636e\u683c\u5f0f\u6216\u5185\u5bb9\u4e0d\u7b26\u5408\u9884\u671f&#xff0c;\u670d\u52a1\u5668\u9700\u8981\u80fd\u591f\u56de\u9000\u5230\u5b89\u5168\u72b6\u6001&#xff0c;\u5e76\u53ef\u80fd\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u9519\u8bef\u54cd\u5e94\u3002 <\/p>\n<p>void TcpServer::readyRead() {<br \/>\n    if (QTcpSocket *clientSocket &#061; qobject_cast&lt;QTcpSocket *&gt;(sender())) {<br \/>\n        QByteArray data &#061; clientSocket-&gt;readAll();<br \/>\n        \/\/ \u5904\u7406\u6570\u636e&#xff0c;\u5305\u62ec\u9519\u8bef\u68c0\u67e5\u548c\u6570\u636e\u9a8c\u8bc1<br \/>\n        if (!verifyData(data)) {<br \/>\n            \/\/ \u5982\u679c\u6570\u636e\u6709\u8bef&#xff0c;\u53ef\u4ee5\u9009\u62e9\u65ad\u5f00\u8fde\u63a5\u6216\u53d1\u9001\u9519\u8bef\u4fe1\u606f<br \/>\n            clientSocket-&gt;disconnectFromHost();<br \/>\n            qDebug() &lt;&lt; &#034;Invalid data received, disconnected client.&#034;;<br \/>\n        }<br \/>\n    }<br \/>\n}<\/p>\n<p> \u5728\u8be5\u6bb5\u4ee3\u7801\u4e2d&#xff0c;\u670d\u52a1\u5668\u8bfb\u53d6\u4e86\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e&#xff0c;\u5e76\u8c03\u7528\u4e86\u4e00\u4e2a\u540d\u4e3a  verifyData  \u7684\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u9a8c\u8bc1\u6570\u636e\u7684\u6709\u6548\u6027\u3002\u5982\u679c\u6570\u636e\u65e0\u6548&#xff0c;\u670d\u52a1\u5668\u5c06\u65ad\u5f00\u4e0e\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u3002 <\/p>\n<h3> 4.2 \u5f02\u5e38\u7ba1\u7406\u5b9e\u8df5 <\/h3>\n<h4> 4.2.1 \u521b\u5efa\u53ef\u91cd\u7528\u7684\u5f02\u5e38\u5904\u7406\u6a21\u5757 <\/h4>\n<p> \u5bf9\u4e8e\u590d\u6742\u7684\u5e94\u7528\u7a0b\u5e8f&#xff0c;\u5c24\u5176\u662f\u6d89\u53ca\u5230\u591a\u4e2a\u6a21\u5757\u548c\u591a\u79cd\u901a\u4fe1\u534f\u8bae\u7684\u670d\u52a1\u5668\u5e94\u7528&#xff0c;\u521b\u5efa\u4e00\u4e2a\u96c6\u4e2d\u7684\u5f02\u5e38\u5904\u7406\u6a21\u5757\u662f\u6709\u76ca\u7684\u3002\u8fd9\u6837\u7684\u6a21\u5757\u53ef\u4ee5\u63d0\u4f9b\u7edf\u4e00\u7684\u63a5\u53e3&#xff0c;\u5c01\u88c5\u5f02\u5e38\u5904\u7406\u7684\u903b\u8f91&#xff0c;\u65b9\u4fbf\u5728\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u4e2d\u91cd\u7528\u548c\u7ef4\u62a4\u3002 <\/p>\n<p> \u53ef\u91cd\u7528\u7684\u5f02\u5e38\u5904\u7406\u6a21\u5757\u5e94\u8be5\u652f\u6301\u914d\u7f6e\u4e0d\u540c\u7684\u7b56\u7565&#xff0c;\u6bd4\u5982\u8bb0\u5f55\u65e5\u5fd7\u3001\u53d1\u9001\u901a\u77e5\u3001\u91cd\u8bd5\u8bf7\u6c42\u7b49&#xff0c;\u5e76\u4e14\u53ef\u4ee5\u8f7b\u677e\u5730\u4e0e\u73b0\u6709\u4ee3\u7801\u96c6\u6210\u3002 <\/p>\n<p>class ExceptionHandler {<br \/>\npublic:<br \/>\n    void handleException(QAbstractSocket::SocketError error) {<br \/>\n        switch(error) {<br \/>\n            case QAbstractSocket::ConnectionRefusedError:<br \/>\n                logError(&#034;Connection refused.&#034;);<br \/>\n                break;<br \/>\n            case QAbstractSocket::SslHandshakeFailedError:<br \/>\n                logError(&#034;SSL handshake failed.&#034;);<br \/>\n                break;<br \/>\n            \/\/ \u5176\u4ed6\u9519\u8bef\u7c7b\u578b\u5904\u7406<br \/>\n            default:<br \/>\n                logError(&#034;Unknown error occurred.&#034;);<br \/>\n        }<br \/>\n    }<\/p>\n<p>private:<br \/>\n    void logError(const QString &amp;errorMessage) {<br \/>\n        \/\/ \u8bb0\u5f55\u9519\u8bef\u4fe1\u606f\u5230\u65e5\u5fd7\u6587\u4ef6\u6216\u5176\u4ed6\u7cfb\u7edf<br \/>\n        qDebug() &lt;&lt; errorMessage;<br \/>\n    }<br \/>\n};<\/p>\n<p> \u4e0a\u8ff0  ExceptionHandler  \u7c7b\u5b9a\u4e49\u4e86\u4e00\u4e2a\u57fa\u672c\u7684\u5f02\u5e38\u5904\u7406\u6846\u67b6&#xff0c;\u63d0\u4f9b\u4e86\u4e00\u4e2a  handleException  \u65b9\u6cd5\u6765\u5c01\u88c5\u9519\u8bef\u5904\u7406\u903b\u8f91\u3002\u5185\u90e8  logError  \u65b9\u6cd5\u53ef\u4ee5\u8fdb\u4e00\u6b65\u6269\u5c55&#xff0c;\u6bd4\u5982\u5b9e\u73b0\u65e5\u5fd7\u7ea7\u522b\u63a7\u5236\u3001\u65e5\u5fd7\u6587\u4ef6\u8f6e\u8f6c\u7b49\u529f\u80fd\u3002 <\/p>\n<h4> 4.2.2 \u65e5\u5fd7\u8bb0\u5f55\u548c\u76d1\u63a7\u5f02\u5e38\u60c5\u51b5 <\/h4>\n<p> \u4e3a\u4e86\u6709\u6548\u5730\u7ba1\u7406\u5f02\u5e38&#xff0c;\u8bb0\u5f55\u8be6\u7ec6\u7684\u65e5\u5fd7\u4fe1\u606f\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u826f\u597d\u7684\u65e5\u5fd7\u8bb0\u5f55\u7b56\u7565\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5feb\u901f\u5b9a\u4f4d\u95ee\u9898&#xff0c;\u7406\u89e3\u9519\u8bef\u53d1\u751f\u7684\u4e0a\u4e0b\u6587&#xff0c;\u5e76\u4e3a\u672a\u6765\u7684\u7cfb\u7edf\u4f18\u5316\u63d0\u4f9b\u6570\u636e\u652f\u6301\u3002 <\/p>\n<p> \u4f7f\u7528Qt\u7684  QSmokeLogger  \u6216\u5176\u4ed6\u7b2c\u4e09\u65b9\u65e5\u5fd7\u5e93\u5982  spdlog  \u53ef\u4ee5\u589e\u5f3a\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\u3002\u8bb0\u5f55\u5185\u5bb9\u4e0d\u4ec5\u5e94\u5305\u62ec\u9519\u8bef\u4fe1\u606f&#xff0c;\u8fd8\u5e94\u5305\u62ec\u65f6\u95f4\u6233\u3001\u9519\u8bef\u4ee3\u7801\u3001\u6808\u8ddf\u8e2a\u3001\u8bf7\u6c42\u8be6\u60c5\u7b49\u3002 <\/p>\n<p>\/\/ \u4f7f\u7528spdlog\u8bb0\u5f55\u5f02\u5e38<br \/>\nspdlog::error(&#034;QTcpServer encountered an error: {}&#034;, errorMessage);<\/p>\n<p> \u5728\u76d1\u63a7\u65b9\u9762&#xff0c;\u53ef\u4ee5\u5c06\u65e5\u5fd7\u96c6\u6210\u5230\u76d1\u63a7\u7cfb\u7edf\u4e2d&#xff0c;\u5982Prometheus\u3001Grafana\u7b49&#xff0c;\u4ee5\u4fbf\u5b9e\u65f6\u89c2\u5bdf\u548c\u5206\u6790\u5f02\u5e38\u53d1\u751f\u7684\u6a21\u5f0f\u548c\u8d8b\u52bf\u3002\u8fd9\u4e9b\u4fe1\u606f\u5bf9\u4e8e\u9884\u9632\u672a\u6765\u7684\u5f02\u5e38\u548c\u63d0\u5347\u7cfb\u7edf\u7a33\u5b9a\u6027\u81f3\u5173\u91cd\u8981\u3002 <\/p>\n<p> \u6784\u5efa\u5f02\u5e38\u5904\u7406\u548c\u76d1\u63a7\u7cfb\u7edf\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\u3002\u968f\u7740\u5e94\u7528\u7a0b\u5e8f\u7684\u53d1\u5c55\u548c\u7528\u6237\u9700\u6c42\u7684\u53d8\u5316&#xff0c;\u5f00\u53d1\u8005\u5e94\u8be5\u4e0d\u65ad\u5730\u8bc4\u4f30\u548c\u4f18\u5316\u5f02\u5e38\u7ba1\u7406\u7b56\u7565\u3002\u4e00\u4e2a\u5065\u58ee\u7684\u5f02\u5e38\u5904\u7406\u7cfb\u7edf\u6709\u52a9\u4e8e\u63d0\u9ad8\u5f00\u53d1\u6548\u7387&#xff0c;\u51cf\u5c11\u8fd0\u7ef4\u6210\u672c&#xff0c;\u5e76\u786e\u4fdd\u63d0\u4f9b\u9ad8\u8d28\u91cf\u7684\u670d\u52a1\u3002 <\/p>\n<h2> 5. \u6027\u80fd\u4f18\u5316\u548c\u5b89\u5168\u6027\u8003\u8651 <\/h2>\n<p> \u6027\u80fd\u4f18\u5316\u548c\u5b89\u5168\u6027\u8003\u8651\u662f\u4efb\u4f55\u7f51\u7edc\u5e94\u7528\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u90e8\u5206\u3002\u4e00\u4e2a\u4f18\u79c0\u7684\u7f51\u7edc\u5e94\u7528&#xff0c;\u4e0d\u4ec5\u8981\u4fdd\u8bc1\u9ad8\u6548\u7684\u6570\u636e\u4f20\u8f93\u548c\u5904\u7406\u80fd\u529b&#xff0c;\u8fd8\u9700\u8981\u786e\u4fdd\u4f20\u8f93\u8fc7\u7a0b\u7684\u5b89\u5168\u6027&#xff0c;\u4ee5\u53ca\u5728\u9047\u5230\u5f02\u5e38\u60c5\u51b5\u65f6\u80fd\u591f\u4f18\u96c5\u5730\u5904\u7406\u3002 <\/p>\n<h3> 5.1 \u5185\u5b58\u7ba1\u7406\u548c\u8fde\u63a5\u5173\u95ed\u7b56\u7565 <\/h3>\n<h4> 5.1.1 \u5185\u5b58\u6cc4\u6f0f\u7684\u8bca\u65ad\u548c\u9884\u9632 <\/h4>\n<p> \u5185\u5b58\u6cc4\u6f0f\u662f\u5bfc\u81f4\u7a0b\u5e8f\u6027\u80fd\u4e0b\u964d\u548c\u4e0d\u7a33\u5b9a\u7684\u91cd\u8981\u539f\u56e0\u4e4b\u4e00\u3002\u5728\u4f7f\u7528QTcpServer\u7c7b\u65f6&#xff0c;\u5f00\u53d1\u8005\u9700\u8981\u7279\u522b\u6ce8\u610f\u5728\u8fde\u63a5\u65ad\u5f00\u65f6&#xff0c;\u53ca\u65f6\u91ca\u653e\u76f8\u5173\u8d44\u6e90&#xff0c;\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u3002 <\/p>\n<p> \u4e3a\u4e86\u8bca\u65ad\u5185\u5b58\u6cc4\u6f0f&#xff0c;\u5f00\u53d1\u8005\u53ef\u4ee5\u4f7f\u7528Qt Creator\u81ea\u5e26\u7684\u5206\u6790\u5de5\u5177&#xff0c;\u5982Valgrind\u63d2\u4ef6\u3002\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d&#xff0c;\u5b9a\u671f\u5bf9\u7a0b\u5e8f\u8fdb\u884c\u5185\u5b58\u68c0\u6d4b&#xff0c;\u53ef\u4ee5\u6709\u6548\u5730\u53d1\u73b0\u6f5c\u5728\u7684\u5185\u5b58\u6cc4\u6f0f\u95ee\u9898\u3002 <\/p>\n<p> \u9632\u6b62\u5185\u5b58\u6cc4\u6f0f\u7684\u4e00\u4e2a\u6700\u4f73\u5b9e\u8df5\u662f\u5229\u7528Qt\u7684\u6240\u6709\u6743\u548c\u7236\u5bf9\u8c61\u673a\u5236\u3002\u5f53\u7236\u5bf9\u8c61\u88ab\u9500\u6bc1\u65f6&#xff0c;\u5176\u6240\u6709\u7684\u5b50\u5bf9\u8c61\u4e5f\u4f1a\u88ab\u81ea\u52a8\u5220\u9664&#xff0c;\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u624b\u52a8\u7ba1\u7406\u5185\u5b58\u7684\u9700\u8981\u3002 <\/p>\n<p>QTcpServer *server &#061; new QTcpServer(this);<br \/>\nconnect(server, &amp;QTcpServer::newConnection, this, &amp;MainWindow::acceptConnection);<\/p>\n<p>void MainWindow::acceptConnection() {<br \/>\n    QTcpSocket *client &#061; server-&gt;nextPendingConnection();<br \/>\n    connect(client, &amp;QTcpSocket::disconnected, client, &amp;QObject::deleteLater);<br \/>\n    \/\/ \u5904\u7406\u5ba2\u6237\u7aef\u8fde\u63a5&#8230;<br \/>\n}<\/p>\n<p> \u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;  deleteLater()  \u65b9\u6cd5\u786e\u4fdd\u4e86\u5f53\u5ba2\u6237\u7aef\u65ad\u5f00\u8fde\u63a5\u540e&#xff0c;  QTcpSocket  \u5bf9\u8c61\u4f1a\u88ab\u81ea\u52a8\u5220\u9664&#xff0c;\u907f\u514d\u5185\u5b58\u6cc4\u6f0f\u3002 <\/p>\n<h4> 5.1.2 \u4f18\u96c5\u5173\u95edTCP\u670d\u52a1\u5668\u7684\u65b9\u6cd5 <\/h4>\n<p> \u5728\u9700\u8981\u5173\u95edTCP\u670d\u52a1\u5668\u65f6&#xff0c;\u5f00\u53d1\u8005\u5e94\u8be5\u4fdd\u8bc1\u6240\u6709\u7684\u8fde\u63a5\u90fd\u80fd\u88ab\u59a5\u5584\u5904\u7406\u3002\u8fd9\u6d89\u53ca\u5230\u4e00\u4e2a\u201c\u4f18\u96c5\u5173\u95ed\u201d\u7684\u6982\u5ff5&#xff0c;\u5373\u786e\u4fdd\u6240\u6709\u5df2\u63a5\u6536\u7684\u6570\u636e\u88ab\u6b63\u786e\u5904\u7406&#xff0c;\u5e76\u4e14\u6240\u6709\u8fde\u63a5\u90fd\u80fd\u88ab\u901a\u77e5\u5373\u5c06\u5173\u95ed\u3002 <\/p>\n<p>void MainWindow::closeServer() {<br \/>\n    server-&gt;close(); \/\/ \u5173\u95ed\u670d\u52a1\u5668\u76d1\u542c\u7aef\u53e3<br \/>\n    qDeleteAll(server-&gt;connectedClients()); \/\/ \u5220\u9664\u6240\u6709\u5ba2\u6237\u7aef\u8fde\u63a5\u5bf9\u8c61<br \/>\n    server-&gt;deleteLater(); \/\/ \u5220\u9664\u670d\u52a1\u5668\u5bf9\u8c61<br \/>\n}<\/p>\n<p> \u5728\u8fd9\u4e2a\u65b9\u6cd5\u4e2d&#xff0c;\u9996\u5148\u5173\u95ed\u4e86\u670d\u52a1\u5668\u76d1\u542c\u7aef\u53e3&#xff0c;\u7136\u540e\u5220\u9664\u4e86\u6240\u6709\u5ba2\u6237\u7aef\u8fde\u63a5\u5bf9\u8c61&#xff0c;\u5e76\u4e14\u6700\u540e\u5220\u9664\u4e86\u670d\u52a1\u5668\u5bf9\u8c61\u672c\u8eab\u3002\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u670d\u52a1\u5668\u5728\u5173\u95ed\u65f6&#xff0c;\u6240\u6709\u7684\u8d44\u6e90\u90fd\u88ab\u6e05\u7406\u5e72\u51c0\u3002 <\/p>\n<h3> 5.2 \u5b89\u5168\u6027\u4f18\u5316 <\/h3>\n<h4> 5.2.1 \u5b89\u5168\u8fde\u63a5\u7684\u5efa\u7acb\u548c\u8bc1\u4e66\u7ba1\u7406 <\/h4>\n<p> \u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u7684\u5b89\u5168\u6027&#xff0c;\u5efa\u7acb\u52a0\u5bc6\u7684SSL\/TLS\u5b89\u5168\u8fde\u63a5\u662f\u4e00\u4e2a\u975e\u5e38\u6709\u6548\u7684\u624b\u6bb5\u3002Qt\u63d0\u4f9b\u4e86QSslSocket\u7c7b\u6765\u5e2e\u52a9\u5f00\u53d1\u8005\u5b9e\u73b0SSL\/TLS\u52a0\u5bc6\u3002 <\/p>\n<p>QSslSocket *secureClient &#061; new QSslSocket(this);<br \/>\nQList&lt;QSslCertificate&gt; caList &#061; QSslCertificate::fromPath(&#034;ca.pem&#034;);<\/p>\n<p>secureClient-&gt;addCaCertificates(caList);<br \/>\nsecureClient-&gt;setPeerVerifyMode(QSslSocket::VerifyNone);<br \/>\nsecureClient-&gt;connectToHostEncrypted(&#034;secure.server.com&#034;, 443);<\/p>\n<p> \u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;\u6211\u4eec\u8bbe\u7f6e\u4e86SSL\u8fde\u63a5\u4f7f\u7528\u7684CA\u8bc1\u4e66&#xff0c;\u5e76\u4e14\u8bbe\u7f6e\u5bf9\u7b49\u65b9\u9a8c\u8bc1\u6a21\u5f0f\u4e3a\u4e0d\u9a8c\u8bc1\u3002\u7136\u540e\u8fde\u63a5\u5230\u52a0\u5bc6\u7684\u670d\u52a1\u5668\u5730\u5740\u548c\u7aef\u53e3\u3002\u8fd9\u6837\u5ba2\u6237\u7aef\u5c31\u53ef\u4ee5\u4e0e\u670d\u52a1\u5668\u8fdb\u884c\u52a0\u5bc6\u901a\u4fe1\u3002 <\/p>\n<h4> 5.2.2 \u9632\u6b62\u5e38\u89c1\u7f51\u7edc\u653b\u51fb\u7684\u6280\u672f <\/h4>\n<p> \u7f51\u7edc\u5b89\u5168\u662f\u4e00\u4e2a\u5e7f\u6cdb\u7684\u8bdd\u9898&#xff0c;\u5bf9\u4e8eTCP\u670d\u52a1\u5668\u6765\u8bf4&#xff0c;\u9632\u6b62\u4e00\u4e9b\u5e38\u89c1\u7684\u7f51\u7edc\u653b\u51fb\u4e5f\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u4f8b\u5982&#xff0c;\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u63aa\u65bd\u6765\u63d0\u9ad8\u5b89\u5168\u6027&#xff1a; <\/p>\n<ul>\n<li> \u4f7f\u7528\u9632\u706b\u5899\u6765\u9650\u5236\u4e0d\u5fc5\u8981\u7684\u8bbf\u95ee <\/li>\n<li> \u9650\u5236\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u901f\u7387&#xff0c;\u9632\u6b62DDoS\u653b\u51fb <\/li>\n<li> \u5bf9\u6570\u636e\u4f20\u8f93\u8fdb\u884c\u52a0\u5bc6&#xff0c;\u907f\u514d\u6570\u636e\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u88ab\u622a\u53d6 <\/li>\n<li> \u5b9a\u671f\u66f4\u65b0\u5b89\u5168\u8bc1\u4e66\u548c\u5bc6\u94a5 <\/li>\n<li> \u5bf9\u8f93\u5165\u6570\u636e\u8fdb\u884c\u9a8c\u8bc1\u548c\u6e05\u6d17&#xff0c;\u9632\u6b62\u6ce8\u5165\u653b\u51fb <\/li>\n<\/ul>\n<h3> 5.3 \u6027\u80fd\u4f18\u5316 <\/h3>\n<h4> 5.3.1 \u5f02\u6b65\u7f16\u7a0b\u63d0\u5347\u54cd\u5e94\u6548\u7387 <\/h4>\n<p> \u5728\u5904\u7406\u5927\u91cf\u5ba2\u6237\u7aef\u8fde\u63a5\u548c\u9ad8\u9891\u7387\u6570\u636e\u4f20\u8f93\u65f6&#xff0c;\u4f7f\u7528\u5f02\u6b65\u7f16\u7a0b\u6280\u672f\u53ef\u4ee5\u663e\u8457\u63d0\u5347TCP\u670d\u52a1\u5668\u7684\u54cd\u5e94\u6548\u7387\u3002Qt\u7684\u4e8b\u4ef6\u5faa\u73af\u548c\u4fe1\u53f7\u69fd\u673a\u5236\u975e\u5e38\u9002\u5408\u5b9e\u73b0\u5f02\u6b65\u5904\u7406\u3002 <\/p>\n<p>void MainWindow::handleClient() {<br \/>\n    QTcpSocket *client &#061; qobject_cast&lt;QTcpSocket *&gt;(sender());<br \/>\n    connect(client, &amp;QTcpSocket::readyRead, this, [this, client](){<br \/>\n        \/\/ \u8bfb\u53d6\u5e76\u5904\u7406\u5ba2\u6237\u7aef\u6570\u636e&#8230;<br \/>\n    });<br \/>\n}<\/p>\n<p> \u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d&#xff0c;\u6211\u4eec\u4f7f\u7528\u4e86Lambda\u8868\u8fbe\u5f0f\u6765\u5904\u7406  QTcpSocket  \u7684  readyRead  \u4fe1\u53f7&#xff0c;\u5b9e\u73b0\u975e\u963b\u585e\u7684\u6570\u636e\u8bfb\u53d6&#xff0c;\u4ece\u800c\u63d0\u5347\u670d\u52a1\u5668\u7684\u6027\u80fd\u3002 <\/p>\n<h4> 5.3.2 \u4f18\u5316\u6570\u636e\u7f16\u7801\u548c\u89e3\u7801\u6d41\u7a0b <\/h4>\n<p> \u6027\u80fd\u4f18\u5316\u7684\u53e6\u4e00\u4e2a\u5173\u952e\u70b9\u662f\u6570\u636e\u7f16\u7801\u548c\u89e3\u7801\u7684\u6548\u7387\u3002\u5bf9\u4e8e\u9700\u8981\u9891\u7e41\u7f16\u7801\u548c\u89e3\u7801\u7684\u7f51\u7edc\u5e94\u7528&#xff0c;\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u9ad8\u6548\u7684\u6570\u636e\u683c\u5f0f&#xff0c;\u5982Google\u7684Protocol Buffers&#xff0c;\u6216\u8005\u4f7f\u7528JSON\u5e8f\u5217\u5316\u5e93\u5982QJson\u8fdb\u884c\u6570\u636e\u5e8f\u5217\u5316\u3002 <\/p>\n<p>QJsonObject jsonObject;<br \/>\n\/\/ \u586b\u5145\u6570\u636e\u5230jsonObject&#8230;<br \/>\nQJsonDocument jsonDoc;<br \/>\njsonDoc.setObject(jsonObject);<\/p>\n<p>QByteArray jsonData &#061; jsonDoc.toJson();<br \/>\nQTcpSocket *client &#061; &#8230;;<br \/>\nclient-&gt;write(jsonData);<\/p>\n<p> \u5728\u8fd9\u6bb5\u4ee3\u7801\u4e2d&#xff0c;\u6211\u4eec\u9996\u5148\u6784\u5efa\u4e86\u4e00\u4e2aJSON\u5bf9\u8c61&#xff0c;\u7136\u540e\u5c06\u5176\u8f6c\u6362\u4e3aJSON\u6587\u6863&#xff0c;\u5e76\u6700\u7ec8\u7f16\u7801\u4e3aJSON\u683c\u5f0f\u7684\u5b57\u8282\u6d41\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u975e\u5e38\u9002\u5408\u4f20\u8f93\u590d\u6742\u7684\u6570\u636e\u7ed3\u6784&#xff0c;\u800c\u4e14\u5e8f\u5217\u5316\u7684\u6548\u7387\u8f83\u9ad8\u3002 <\/p>\n<p> \u7efc\u4e0a\u6240\u8ff0&#xff0c;\u5185\u5b58\u7ba1\u7406\u3001\u5b89\u5168\u6027\u548c\u6027\u80fd\u4f18\u5316\u662f\u6784\u5efa\u9ad8\u6548\u4e14\u5b89\u5168\u7684TCP\u670d\u52a1\u5668\u7684\u4e09\u4e2a\u5173\u952e\u70b9\u3002\u901a\u8fc7\u5408\u7406\u7684\u7b56\u7565\u548c\u6700\u4f73\u5b9e\u8df5&#xff0c;\u53ef\u4ee5\u663e\u8457\u63d0\u5347\u5e94\u7528\u7a0b\u5e8f\u7684\u8d28\u91cf\u548c\u7a33\u5b9a\u6027\u3002 <\/p>\n<p>  \u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90&#xff0c;\u70b9\u51fb\u83b7\u53d6  <img decoding=\"async\" alt=\"menu-r.4af5f7ec.gif\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250730034231-688994a7a5bea.gif\" style=\"width:16px;margin-left:4px;vertical-align:text-bottom;cursor:text\" \/> <\/p>\n<p> \u7b80\u4ecb&#xff1a;QT TCP 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