{"id":30004,"date":"2025-04-20T15:36:04","date_gmt":"2025-04-20T07:36:04","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/30004.html"},"modified":"2025-04-20T15:36:04","modified_gmt":"2025-04-20T07:36:04","slug":"qt%e5%a4%9a%e7%ba%bf%e7%a8%8b%e6%9c%8d%e5%8a%a1%e5%99%a8%e6%96%87%e4%bb%b6%e4%bc%a0%e8%be%93%e5%ae%9e%e6%88%98","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/30004.html","title":{"rendered":"Qt\u591a\u7ebf\u7a0b\u670d\u52a1\u5668\u6587\u4ef6\u4f20\u8f93\u5b9e\u6218"},"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\/04\/20250420073601-6804a3e1942e4.gif\" style=\"width:16px;margin-left:4px;vertical-align:text-bottom\" \/><\/p>\n<p> \u7b80\u4ecb&#xff1a;Qt\u662f\u4e00\u4e2a\u8de8\u5e73\u53f0\u7684C&#043;&#043;\u6846\u67b6&#xff0c;\u652f\u6301\u521b\u5efa\u56fe\u5f62\u7528\u6237\u754c\u9762\u5e94\u7528\u7a0b\u5e8f\u3002\u672c\u9879\u76ee\u4ecb\u7ecd\u5982\u4f55\u5229\u7528Qt\u7684\u591a\u7ebf\u7a0b\u548cTCP\u901a\u4fe1\u7279\u6027\u6784\u5efa\u4e00\u4e2a\u80fd\u591f\u5904\u7406\u591a\u4e2a\u5ba2\u6237\u7aef\u6587\u4ef6\u4f20\u8f93\u8bf7\u6c42\u7684\u670d\u52a1\u5668\u7a0b\u5e8f\u3002\u9879\u76ee\u6db5\u76d6\u4e86\u591a\u7ebf\u7a0b\u7684\u521b\u5efa\u4e0e\u7ba1\u7406\u3001TCP\u901a\u4fe1\u7684\u5efa\u7acb\u3001\u6587\u4ef6\u4f20\u8f93\u7684\u5b9e\u73b0\u3001\u5e76\u53d1\u4efb\u52a1\u7684\u7ba1\u7406\u3001\u9519\u8bef\u4e0e\u5f02\u5e38\u5904\u7406\u3001\u4ee5\u53ca\u6027\u80fd\u4f18\u5316\u7b49\u5173\u952e\u77e5\u8bc6\u70b9&#xff0c;\u4e3a\u6784\u5efa\u9ad8\u5e76\u53d1\u548c\u9ad8\u6027\u80fd\u7f51\u7edc\u5e94\u7528\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5b9e\u8df5\u6848\u4f8b\u3002 <img decoding=\"async\" alt=\"\u591a\u7ebf\u7a0b\u670d\u52a1\u5668\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250420073602-6804a3e228412.png\" \/><\/p>\n<h2> 1. Qt\u591a\u7ebf\u7a0b\u7f16\u7a0b <\/h2>\n<h3> 1.1 \u591a\u7ebf\u7a0b\u7f16\u7a0b\u57fa\u7840 <\/h3>\n<p> \u5728\u5f00\u53d1\u9700\u8981\u5927\u91cf\u8ba1\u7b97\u6216I\/O\u64cd\u4f5c\u7684\u5e94\u7528\u7a0b\u5e8f\u65f6&#xff0c;\u591a\u7ebf\u7a0b\u7f16\u7a0b\u662f\u4e00\u79cd\u63d0\u5347\u7a0b\u5e8f\u54cd\u5e94\u6027\u548c\u6267\u884c\u6548\u7387\u7684\u91cd\u8981\u6280\u672f\u3002\u968f\u7740\u591a\u6838\u5904\u7406\u5668\u7684\u666e\u53ca&#xff0c;\u5229\u7528\u591a\u7ebf\u7a0b\u5145\u5206\u5229\u7528\u786c\u4ef6\u8d44\u6e90&#xff0c;\u5df2\u6210\u4e3a\u8f6f\u4ef6\u5f00\u53d1\u8005\u9700\u8981\u638c\u63e1\u7684\u91cd\u8981\u6280\u80fd\u3002Qt\u4f5c\u4e3a\u4e00\u4e2a\u8de8\u5e73\u53f0\u7684C&#043;&#043;\u5e94\u7528\u7a0b\u5e8f\u6846\u67b6&#xff0c;\u4e3a\u591a\u7ebf\u7a0b\u7f16\u7a0b\u63d0\u4f9b\u4e86\u5b8c\u5907\u7684\u5de5\u5177\u548c\u7c7b\u5e93&#xff0c;\u53ef\u4ee5\u6781\u5927\u5730\u7b80\u5316\u591a\u7ebf\u7a0b\u7f16\u7a0b\u7684\u5de5\u4f5c\u3002 <\/p>\n<h3> 1.2 Qt\u7ebf\u7a0b\u7c7b\u6982\u8ff0 <\/h3>\n<p> Qt\u63d0\u4f9b\u4e86\u51e0\u79cd\u7c7b\u6765\u5904\u7406\u7ebf\u7a0b\u64cd\u4f5c&#xff0c;\u4e3b\u8981\u5305\u62ecQThread\u7c7b\u3001QRunnable\u7c7b\u3001QThreadPool\u7c7b\u7b49\u3002QThread\u7c7b\u5141\u8bb8\u5f00\u53d1\u8005\u521b\u5efa\u548c\u63a7\u5236\u81ea\u5df1\u7684\u7ebf\u7a0b&#xff0c;\u800cQRunnable\u7c7b\u4e3a\u6267\u884c\u4efb\u52a1\u63d0\u4f9b\u4e86\u4e00\u79cd\u8f7b\u91cf\u7ea7\u7684\u66ff\u4ee3\u65b9\u6848&#xff0c;QThreadPool\u7c7b\u7ba1\u7406\u7ebf\u7a0b\u6c60&#xff0c;\u63d0\u4f9b\u4e86\u4e00\u79cd\u9ad8\u6548\u91cd\u7528\u7ebf\u7a0b\u7684\u65b9\u5f0f\u3002 <\/p>\n<h3> 1.3 \u7ebf\u7a0b\u95f4\u7684\u4fe1\u53f7\u4e0e\u69fd\u673a\u5236 <\/h3>\n<p> \u5728Qt\u4e2d&#xff0c;\u7ebf\u7a0b\u95f4\u7684\u901a\u4fe1\u901a\u5e38\u901a\u8fc7\u4fe1\u53f7\u548c\u69fd\u673a\u5236\u6765\u5b9e\u73b0\u3002\u8fd9\u4e00\u673a\u5236\u4f7f\u5f97\u5728\u4e0d\u540c\u7ebf\u7a0b\u4e2d\u8fd0\u884c\u7684\u5bf9\u8c61\u53ef\u4ee5\u76f8\u4e92\u901a\u4fe1&#xff0c;\u800c\u4e0d\u5fc5\u62c5\u5fc3\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u5728\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u53d1\u5c04\u4e00\u4e2a\u4fe1\u53f7&#xff0c;\u800c\u76f8\u5173\u7684\u69fd\u51fd\u6570\u5219\u4f1a\u5728\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u4e2d\u88ab\u8c03\u7528\u3002 <\/p>\n<p>\/\/ \u793a\u4f8b\u4ee3\u7801&#xff1a;\u5728\u5de5\u4f5c\u7ebf\u7a0b\u4e2d\u53d1\u5c04\u4fe1\u53f7<\/p>\n<p>class Worker : public QObject {<br \/>\n    Q_OBJECT<br \/>\npublic:<br \/>\n    Worker() { connect(this, &amp;Worker::workDone, this, &amp;Worker::doWork); }<\/p>\n<p>public slots:<br \/>\n    void doWork() {<br \/>\n        \/\/ \u6267\u884c\u4e00\u4e9b\u64cd\u4f5c&#8230;<br \/>\n        emit workDone();<br \/>\n    }<\/p>\n<p>signals:<br \/>\n    void workDone();<br \/>\n};<\/p>\n<p>\/\/ \u4e3b\u7ebf\u7a0b\u4e2d\u63a5\u6536\u4fe1\u53f7\u5e76\u5904\u7406<br \/>\nvoid onWorkDone() {<br \/>\n    \/\/ \u5904\u7406\u5de5\u4f5c\u5b8c\u6210\u7684\u903b\u8f91&#8230;<br \/>\n}<\/p>\n<p>Worker *worker &#061; new Worker();<br \/>\nQObject::connect(worker, &amp;Worker::workDone, onWorkDone);<\/p>\n<p> \u5728\u6b64\u793a\u4f8b\u4e2d&#xff0c;  Worker  \u7c7b\u7ee7\u627f\u81ea  QObject  &#xff0c;\u4f7f\u7528  emit  \u53d1\u5c04\u4fe1\u53f7  workDone  &#xff0c;\u800c\u69fd\u51fd\u6570  onWorkDone  \u5219\u5728\u4e3b\u7ebf\u7a0b\u6216\u5176\u4ed6\u7ebf\u7a0b\u4e2d\u88ab\u8c03\u7528&#xff0c;\u8fd9\u53d6\u51b3\u4e8e  Worker  \u5b9e\u4f8b\u662f\u5728\u54ea\u4e2a\u7ebf\u7a0b\u4e2d\u521b\u5efa\u7684\u3002 <\/p>\n<p> \u4ee5\u4e0a\u662f\u5173\u4e8eQt\u591a\u7ebf\u7a0b\u7f16\u7a0b\u7684\u57fa\u7840\u4ecb\u7ecd&#xff0c;\u63a5\u4e0b\u6765\u7684\u7ae0\u8282\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8Qt\u4e2d\u7684TCP\u901a\u4fe1\u5b9e\u73b0\u53ca\u5176\u5728\u591a\u7ebf\u7a0b\u4e2d\u7684\u5e94\u7528\u3002 <\/p>\n<h2> 2. TCP\u901a\u4fe1\u5b9e\u73b0 <\/h2>\n<h3> 2.1 \u7f51\u7edc\u901a\u4fe1\u57fa\u7840 <\/h3>\n<h4> 2.1.1 \u7f51\u7edc\u901a\u4fe1\u6a21\u578b\u7b80\u4ecb <\/h4>\n<p> \u7f51\u7edc\u901a\u4fe1\u6a21\u578b\u662f\u7f51\u7edc\u6570\u636e\u4f20\u8f93\u7684\u57fa\u7840&#xff0c;\u5b83\u5b9a\u4e49\u4e86\u6570\u636e\u4ea4\u6362\u7684\u8fc7\u7a0b\u548c\u89c4\u5219\u3002\u5728\u7f51\u7edc\u7f16\u7a0b\u4e2d&#xff0c;\u6211\u4eec\u7ecf\u5e38\u9047\u5230\u7684\u6a21\u578b\u5305\u62ecOSI\u4e03\u5c42\u6a21\u578b\u548cTCP\/IP\u56db\u5c42\u6a21\u578b\u3002OSI\u6a21\u578b\u662f\u4e00\u79cd\u7406\u8bba\u6a21\u578b&#xff0c;\u5b83\u5c06\u901a\u4fe1\u534f\u8bae\u5206\u4e3a7\u5c42&#xff0c;\u6bcf\u4e00\u5c42\u90fd\u6709\u81ea\u5df1\u7684\u529f\u80fd\u548c\u804c\u8d23\u3002TCP\/IP\u6a21\u578b\u5219\u662f\u4e00\u4e2a\u5b9e\u9645\u5e94\u7528\u7684\u6a21\u578b&#xff0c;\u5b83\u7b80\u5316\u4e86OSI\u6a21\u578b&#xff0c;\u5c06\u7f51\u7edc\u901a\u4fe1\u5206\u4e3a\u56db\u4e2a\u5c42\u6b21&#xff1a;\u94fe\u8def\u5c42\u3001\u7f51\u7edc\u5c42\u3001\u4f20\u8f93\u5c42\u548c\u5e94\u7528\u5c42\u3002 <\/p>\n<p> \u5728\u7f51\u7edc\u901a\u4fe1\u4e2d&#xff0c;TCP&#xff08;Transmission Control Protocol&#xff0c;\u4f20\u8f93\u63a7\u5236\u534f\u8bae&#xff09;\u662f\u4e00\u79cd\u9762\u5411\u8fde\u63a5\u7684\u3001\u53ef\u9760\u7684\u3001\u57fa\u4e8e\u5b57\u8282\u6d41\u7684\u4f20\u8f93\u5c42\u901a\u4fe1\u534f\u8bae\u3002\u5b83\u5728IP&#xff08;Internet Protocol&#xff0c;\u7f51\u9645\u534f\u8bae&#xff09;\u7684\u57fa\u7840\u4e0a\u63d0\u4f9b\u53ef\u9760\u7684\u3001\u6709\u5e8f\u7684\u548c\u65e0\u91cd\u590d\u7684\u6570\u636e\u4f20\u8f93\u670d\u52a1\u3002TCP\u901a\u8fc7\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u8fde\u63a5&#xff0c;\u901a\u8fc7\u56db\u6b21\u6325\u624b\u7ed3\u675f\u8fde\u63a5&#xff0c;\u786e\u4fdd\u4e86\u6570\u636e\u4f20\u8f93\u7684\u5b8c\u6574\u6027\u548c\u53ef\u9760\u6027\u3002 <\/p>\n<h4> 2.1.2 TCP\/IP\u534f\u8bae\u6808\u6982\u8ff0 <\/h4>\n<p> TCP\/IP\u534f\u8bae\u6808\u662f\u4e00\u79cd\u9075\u5faaTCP\/IP\u6a21\u578b\u7684\u7f51\u7edc\u901a\u4fe1\u534f\u8bae\u96c6\u5408\u3002\u5b83\u7531\u4e00\u7cfb\u5217\u7f51\u7edc\u534f\u8bae\u7ec4\u6210&#xff0c;\u5176\u4e2dTCP\u548cIP\u662f\u6838\u5fc3\u3002TCP\u8d1f\u8d23\u6570\u636e\u7684\u4f20\u8f93&#xff0c;IP\u8d1f\u8d23\u6570\u636e\u7684\u8def\u7531\u3002\u6b64\u5916&#xff0c;\u534f\u8bae\u6808\u4e2d\u8fd8\u5305\u62ec\u5982UDP&#xff08;User Datagram Protocol&#xff0c;\u7528\u6237\u6570\u636e\u62a5\u534f\u8bae&#xff09;\u8fd9\u6837\u7684\u5176\u4ed6\u4f20\u8f93\u5c42\u534f\u8bae&#xff0c;\u4ee5\u53caHTTP&#xff08;Hypertext Transfer Protocol&#xff0c;\u8d85\u6587\u672c\u4f20\u8f93\u534f\u8bae&#xff09;\u3001FTP&#xff08;File Transfer Protocol&#xff0c;\u6587\u4ef6\u4f20\u8f93\u534f\u8bae&#xff09;\u7b49\u5e94\u7528\u5c42\u534f\u8bae\u3002 <\/p>\n<p> TCP\/IP\u534f\u8bae\u6808\u5de5\u4f5c\u65f6&#xff0c;\u6570\u636e\u4ece\u5e94\u7528\u5c42\u5f00\u59cb&#xff0c;\u7ecf\u8fc7\u4f20\u8f93\u5c42&#xff08;\u4f7f\u7528TCP\u6216UDP\u534f\u8bae&#xff09;&#xff0c;\u518d\u5230\u7f51\u7edc\u5c42&#xff08;\u4f7f\u7528IP\u534f\u8bae&#xff09;&#xff0c;\u6700\u540e\u901a\u8fc7\u94fe\u8def\u5c42\u53d1\u9001\u5230\u76ee\u6807\u8ba1\u7b97\u673a\u3002\u5728\u63a5\u6536\u7aef&#xff0c;\u6570\u636e\u5c06\u53cd\u5411\u901a\u8fc7\u6bcf\u4e00\u5c42&#xff0c;\u76f4\u5230\u5e94\u7528\u5c42\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u786e\u4fdd\u4e86\u6570\u636e\u4ece\u6e90\u5230\u76ee\u7684\u5730\u7684\u6b63\u786e\u4f20\u8f93&#xff0c;\u5e76\u4e14\u80fd\u591f\u5728\u5404\u79cd\u4e0d\u540c\u7684\u7f51\u7edc\u73af\u5883\u4e2d\u5de5\u4f5c\u3002 <\/p>\n<h3> 2.2 Qt\u4e2d\u7684TCP\u901a\u4fe1\u7c7b <\/h3>\n<h4> 2.2.1 QTcpServer\u7c7b\u7684\u4f7f\u7528 <\/h4>\n<p> QTcpServer\u7c7b\u662fQt\u63d0\u4f9b\u7684\u7528\u4e8e\u76d1\u542c\u7f51\u7edc\u7aef\u53e3\u5e76\u63a5\u53d7TCP\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u7c7b\u3002\u5728\u521b\u5efa\u670d\u52a1\u5668\u5e94\u7528\u65f6&#xff0c;\u9996\u5148\u9700\u8981\u521b\u5efa\u4e00\u4e2aQTcpServer\u5b9e\u4f8b&#xff0c;\u5e76\u8c03\u7528\u5176  listen()  \u65b9\u6cd5\u6765\u76d1\u542c\u4e00\u4e2a\u7aef\u53e3\u3002\u5982\u679c\u7aef\u53e3\u88ab\u6210\u529f\u76d1\u542c&#xff0c;  serverState()  \u65b9\u6cd5\u8fd4\u56de  ListeningState  \u3002\u6b64\u65f6&#xff0c;\u670d\u52a1\u5668\u53ef\u4ee5\u63a5\u53d7\u65b0\u7684\u8fde\u63a5\u3002 <\/p>\n<p> \u8981\u63a5\u53d7\u65b0\u7684\u8fde\u63a5&#xff0c;\u670d\u52a1\u5668\u9700\u8981\u5728\u6709\u65b0\u8fde\u63a5\u65f6\u91cd\u5199  newConnectionAvailable()  \u69fd\u51fd\u6570&#xff0c;\u5e76\u901a\u8fc7  nextPendingConnection()  \u83b7\u53d6\u4e00\u4e2aQTcpSocket\u5bf9\u8c61&#xff0c;\u8fd9\u4e2a\u5bf9\u8c61\u4ee3\u8868\u4e86\u4e0e\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u3002\u901a\u8fc7\u8fd9\u4e2a\u8fde\u63a5&#xff0c;\u670d\u52a1\u5668\u53ef\u4ee5\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u3002 <\/p>\n<h4> 2.2.2 QTcpSocket\u7c7b\u7684\u4f7f\u7528 <\/h4>\n<p> QTcpSocket\u7c7b\u7528\u4e8e\u5b9e\u73b0TCP\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u3002\u5728\u5ba2\u6237\u7aef&#xff0c;\u4f7f\u7528  connectToHost()  \u65b9\u6cd5\u6765\u8fde\u63a5\u5230\u670d\u52a1\u5668\u3002\u8fde\u63a5\u6210\u529f\u540e&#xff0c;\u5ba2\u6237\u7aef\u53ef\u4ee5\u901a\u8fc7  write()  \u65b9\u6cd5\u53d1\u9001\u6570\u636e&#xff0c;\u5e76\u901a\u8fc7  read()  \u65b9\u6cd5\u6765\u63a5\u6536\u670d\u52a1\u5668\u7684\u6570\u636e\u3002\u4e3a\u4e86\u5904\u7406\u7f51\u7edc\u4e8b\u4ef6&#xff0c;\u5982\u6570\u636e\u63a5\u6536\u548c\u8fde\u63a5\u65ad\u5f00&#xff0c;\u5ba2\u6237\u7aef\u9700\u8981\u8fde\u63a5  readyRead()  \u548c  disconnected()  \u7b49\u4fe1\u53f7\u5230\u76f8\u5e94\u7684\u69fd\u51fd\u6570\u3002 <\/p>\n<p> QTcpSocket\u8fd8\u63d0\u4f9b\u4e86\u65ad\u5f00\u8fde\u63a5\u7684\u65b9\u6cd5  disconnectFromHost()  &#xff0c;\u4ee5\u53ca\u67e5\u8be2\u8fde\u63a5\u72b6\u6001\u7684  state()  \u65b9\u6cd5\u3002\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5&#xff0c;\u5ba2\u6237\u7aef\u53ef\u4ee5\u63a7\u5236\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u901a\u4fe1\u8fc7\u7a0b&#xff0c;\u4f8b\u5982\u5728\u4f20\u8f93\u5b8c\u6210\u540e\u4e3b\u52a8\u65ad\u5f00\u8fde\u63a5\u3002 <\/p>\n<h4> 2.2.3 \u7f51\u7edc\u901a\u4fe1\u7684\u591a\u7ebf\u7a0b\u5b9e\u8df5 <\/h4>\n<p> \u5728Qt\u4e2d\u5b9e\u73b0TCP\u901a\u4fe1\u65f6&#xff0c;\u4e3a\u4e86\u4e0d\u963b\u585e\u754c\u9762\u6216\u4e3b\u7ebf\u7a0b&#xff0c;\u901a\u5e38\u4f1a\u91c7\u7528\u591a\u7ebf\u7a0b\u7684\u65b9\u5f0f\u3002QTcpServer\u548cQTcpSocket\u90fd\u7ee7\u627f\u81eaQObject&#xff0c;\u652f\u6301\u5728\u4efb\u4f55\u7ebf\u7a0b\u4e2d\u4f7f\u7528\u4e8b\u4ef6\u5faa\u73af\u3002\u8fd9\u610f\u5473\u7740\u53ef\u4ee5\u5728\u4e00\u4e2a\u5355\u72ec\u7684\u7ebf\u7a0b\u4e2d\u521b\u5efaQTcpServer\u6216QTcpSocket\u5b9e\u4f8b&#xff0c;\u4ee5\u4fbf\u5b83\u4eec\u53ef\u4ee5\u5728\u540e\u53f0\u5904\u7406\u7f51\u7edc\u901a\u4fe1&#xff0c;\u800c\u4e0d\u4f1a\u5f71\u54cd\u4e3b\u754c\u9762\u7684\u54cd\u5e94\u6027\u3002 <\/p>\n<p> \u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d&#xff0c;\u9700\u8981\u6ce8\u610f\u7684\u662f&#xff0c;\u4fe1\u53f7\u548c\u69fd\u673a\u5236\u53ef\u4ee5\u8de8\u7ebf\u7a0b\u5de5\u4f5c&#xff0c;\u4f46\u524d\u63d0\u662f\u69fd\u51fd\u6570\u4e0d\u80fd\u5728\u4e3b\u7ebf\u7a0b\u4e4b\u5916\u7684\u7ebf\u7a0b\u4e2d\u76f4\u63a5\u8c03\u7528\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898&#xff0c;\u53ef\u4ee5\u4f7f\u7528  moveToThread()  \u65b9\u6cd5\u5c06\u5bf9\u8c61\u79fb\u52a8\u5230\u76ee\u6807\u7ebf\u7a0b\u3002\u8fd8\u9700\u8981\u5728\u521b\u5efa\u7ebf\u7a0b\u4e4b\u524d\u8bbe\u7f6e\u597d\u4fe1\u53f7\u4e0e\u69fd\u7684\u8fde\u63a5&#xff0c;\u4ee5\u786e\u4fdd\u5f53\u4fe1\u53f7\u88ab\u89e6\u53d1\u65f6&#xff0c;\u76f8\u5e94\u7684\u69fd\u51fd\u6570\u53ef\u4ee5\u5728\u6b63\u786e\u7ebf\u7a0b\u4e2d\u6267\u884c\u3002 <\/p>\n<p> \u901a\u8fc7\u5408\u7406\u4f7f\u7528QTcpServer\u548cQTcpSocket\u7c7b&#xff0c;\u5728Qt\u6846\u67b6\u4e0b\u5b9e\u73b0\u591a\u7ebf\u7a0b\u7684\u7f51\u7edc\u901a\u4fe1\u53d8\u5f97\u7b80\u5355\u4e14\u9ad8\u6548\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u80fd\u591f\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027&#xff0c;\u8fd8\u80fd\u63d0\u4f9b\u826f\u597d\u7684\u7528\u6237\u4f53\u9a8c&#xff0c;\u56e0\u4e3a\u754c\u9762\u53ef\u4ee5\u5728\u6267\u884c\u7f51\u7edc\u64cd\u4f5c\u65f6\u4fdd\u6301\u6d41\u7545\u3002 <\/p>\n<h2> 3. \u6587\u4ef6\u4f20\u8f93\u673a\u5236 <\/h2>\n<h3> 3.1 \u6587\u4ef6\u4f20\u8f93\u7684\u7406\u8bba\u57fa\u7840 <\/h3>\n<h4> 3.1.1 \u6587\u4ef6\u4f20\u8f93\u534f\u8baeFTP\u548cTFTP\u4ecb\u7ecd <\/h4>\n<p> \u6587\u4ef6\u4f20\u8f93\u534f\u8bae&#xff08;FTP&#xff09;\u548c\u7b80\u5355\u6587\u4ef6\u4f20\u8f93\u534f\u8bae&#xff08;TFTP&#xff09;\u662f\u5e38\u89c1\u7684\u6587\u4ef6\u4f20\u8f93\u65b9\u6cd5&#xff0c;\u5b83\u4eec\u5404\u6709\u7279\u70b9\u548c\u9002\u7528\u573a\u666f\u3002FTP\u57fa\u4e8eTCP\/IP\u534f\u8bae&#xff0c;\u4e3a\u7528\u6237\u63d0\u4f9b\u7a33\u5b9a\u53ef\u9760\u7684\u6587\u4ef6\u4f20\u8f93\u670d\u52a1&#xff0c;\u652f\u6301\u65ad\u70b9\u7eed\u4f20\u548c\u8eab\u4efd\u9a8c\u8bc1\u7b49\u7279\u6027\u3002\u800cTFTP\u5728\u8bbe\u8ba1\u4e0a\u66f4\u4e3a\u7b80\u5355&#xff0c;\u8fd0\u884c\u4e8eUDP\u4e4b\u4e0a&#xff0c;\u4e3b\u8981\u9488\u5bf9\u5c0f\u578b\u6587\u4ef6\u4f20\u8f93&#xff0c;\u5728\u7f51\u7edc\u73af\u5883\u7b80\u5355\u3001\u6587\u4ef6\u9700\u6c42\u4e0d\u9ad8\u7684\u573a\u666f\u4e0b\u4f7f\u7528\u3002 <\/p>\n<h5> \u6587\u4ef6\u4f20\u8f93\u534f\u8baeFTP <\/h5>\n<p> FTP\u534f\u8bae\u4f7f\u7528\u4e24\u4e2a\u7aef\u53e3&#xff0c;\u4e00\u4e2a\u662f21\u53f7\u7aef\u53e3\u7528\u4e8e\u63a7\u5236\u8fde\u63a5&#xff08;\u5982\u767b\u5f55\u3001\u5217\u51fa\u76ee\u5f55&#xff09;&#xff0c;\u53e6\u4e00\u4e2a\u662f20\u53f7\u7aef\u53e3\u7528\u4e8e\u6570\u636e\u4f20\u8f93\u3002\u5b83\u7684\u4e3b\u8981\u64cd\u4f5c\u5305\u62ec\u767b\u5f55\u3001\u5217\u8868\u3001\u4e0b\u8f7d\u548c\u4e0a\u4f20\u7b49\u3002\u7531\u4e8eFTP\u4f7f\u7528\u660e\u6587\u4f20\u8f93&#xff0c;\u6240\u4ee5\u5728\u4f20\u8f93\u654f\u611f\u6570\u636e\u65f6\u9700\u8981\u8003\u8651\u5b89\u5168\u6027\u3002 <\/p>\n<h5> \u7b80\u5355\u6587\u4ef6\u4f20\u8f93\u534f\u8baeTFTP <\/h5>\n<p> TFTP\u4f7f\u752869\u53f7\u7aef\u53e3&#xff0c;\u5e76\u4e14\u4e0d\u63d0\u4f9b\u8eab\u4efd\u9a8c\u8bc1\u673a\u5236\u3002\u5b83\u7684\u4f18\u70b9\u662f\u8f7b\u91cf\u7ea7&#xff0c;\u9002\u5408\u4e8e\u542f\u52a8\u65f6\u95f4\u654f\u611f\u7684\u73af\u5883&#xff0c;\u6bd4\u5982\u8bbe\u5907\u542f\u52a8\u65f6\u52a0\u8f7d\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u3002\u7136\u800c&#xff0c;\u56e0\u4e3a\u5176\u5728\u4f20\u8f93\u65f6\u6ca1\u6709\u9519\u8bef\u6062\u590d\u673a\u5236&#xff0c;\u56e0\u6b64\u5bf9\u7f51\u7edc\u8d28\u91cf\u8981\u6c42\u66f4\u9ad8\u3002 <\/p>\n<h4> 3.1.2 \u6587\u4ef6\u4f20\u8f93\u7684\u6b65\u9aa4\u548c\u8981\u6c42 <\/h4>\n<p> \u6587\u4ef6\u4f20\u8f93\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4&#xff1a;\u521d\u59cb\u5316\u8fde\u63a5\u3001\u767b\u5f55\u9a8c\u8bc1\u3001\u6587\u4ef6\u76ee\u5f55\u64cd\u4f5c\u3001\u6587\u4ef6\u4f20\u8f93\u548c\u8fde\u63a5\u5173\u95ed\u3002\u6587\u4ef6\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u8981\u6c42\u5177\u5907\u4ee5\u4e0b\u51e0\u70b9&#xff1a; <\/p>\n<ul>\n<li>  \u53ef\u9760\u6027  &#xff1a;\u6587\u4ef6\u4f20\u8f93\u9700\u8981\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027&#xff0c;\u5373\u4f20\u8f93\u7684\u6587\u4ef6\u5185\u5bb9\u4e0e\u539f\u6587\u4ef6\u4e00\u81f4\u3002 <\/li>\n<li>  \u5b89\u5168\u6027  &#xff1a;\u5728\u4f20\u8f93\u6587\u4ef6\u65f6&#xff0c;\u9700\u8981\u786e\u4fdd\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u7684\u6570\u636e\u5b89\u5168&#xff0c;\u907f\u514d\u88ab\u622a\u83b7\u6216\u7be1\u6539\u3002 <\/li>\n<li>  \u6548\u7387  &#xff1a;\u6587\u4ef6\u4f20\u8f93\u5e94\u8be5\u9ad8\u6548&#xff0c;\u5c24\u5176\u662f\u5728\u7f51\u7edc\u73af\u5883\u8f83\u5dee\u6216\u6587\u4ef6\u8f83\u5927\u65f6&#xff0c;\u9700\u8981\u6709\u76f8\u5e94\u7684\u4f18\u5316\u63aa\u65bd\u3002 <\/li>\n<li>  \u7a33\u5b9a  &#xff1a;\u786e\u4fdd\u6587\u4ef6\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u7684\u7a33\u5b9a\u6027\u548c\u5065\u58ee\u6027&#xff0c;\u907f\u514d\u8fde\u63a5\u4e2d\u65ad\u5bfc\u81f4\u7684\u6587\u4ef6\u635f\u574f\u3002 <\/li>\n<\/ul>\n<h3> 3.2 Qt\u5b9e\u73b0\u6587\u4ef6\u4f20\u8f93 <\/h3>\n<h4> 3.2.1 \u6587\u4ef6\u8bfb\u53d6\u4e0e\u5199\u5165\u6280\u672f <\/h4>\n<p> \u5728Qt\u4e2d&#xff0c;\u53ef\u4ee5\u4f7f\u7528  QFile  \u7c7b\u6765\u5b9e\u73b0\u6587\u4ef6\u7684\u8bfb\u53d6\u548c\u5199\u5165\u64cd\u4f5c\u3002  QFile  \u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u65b9\u6cd5\u6765\u5904\u7406\u6587\u4ef6&#xff0c;\u4f8b\u5982  open()  ,  read()  ,  write()  ,  flush()  , \u548c  close()  \u3002 <\/p>\n<p>\/\/ \u793a\u4f8b\u4ee3\u7801&#xff1a;\u4f7f\u7528QFile\u8bfb\u5199\u6587\u4ef6<br \/>\nQFile file(&#034;example.txt&#034;);<\/p>\n<p>if (file.open(QIODevice::ReadWrite)) {<br \/>\n    \/\/ \u5199\u5165\u6587\u672c\u5230\u6587\u4ef6<br \/>\n    QByteArray block &#061; &#034;Hello, World!\\\\n&#034;;<br \/>\n    file.write(block);<\/p>\n<p>    \/\/ \u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9<br \/>\n    file.seek(0); \/\/ \u91cd\u7f6e\u6587\u4ef6\u6307\u9488<br \/>\n    while (!file.atEnd()) {<br \/>\n        QByteArray line &#061; file.readLine();<br \/>\n        \/\/ \u5904\u7406\u6bcf\u4e00\u884c\u6570\u636e<br \/>\n    }<\/p>\n<p>    file.close(); \/\/ \u5173\u95ed\u6587\u4ef6<br \/>\n} else {<br \/>\n    qDebug() &lt;&lt; &#034;File cannot be opened for reading\/writing!&#034;;<br \/>\n}<\/p>\n<p> \u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;\u9996\u5148\u5c1d\u8bd5\u4ee5\u8bfb\u5199\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6&#xff0c;\u5982\u679c\u6587\u4ef6\u6253\u5f00\u6210\u529f&#xff0c;\u5219\u5199\u5165\u4e00\u6bb5\u6587\u672c\u5e76\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f&#xff0c;\u4f7f\u7528  readLine()  \u51fd\u6570\u53ef\u4ee5\u9010\u884c\u8bfb\u53d6\u6587\u4ef6&#xff0c;\u8fd9\u5728\u5904\u7406\u5927\u6587\u4ef6\u65f6\u7279\u522b\u6709\u7528\u3002 <\/p>\n<h4> 3.2.2 \u6587\u4ef6\u4f20\u8f93\u7684\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898 <\/h4>\n<p> \u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5b9e\u73b0\u6587\u4ef6\u4f20\u8f93\u65f6&#xff0c;\u9700\u8981\u7279\u522b\u6ce8\u610f\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002\u591a\u4e2a\u7ebf\u7a0b\u53ef\u80fd\u4f1a\u540c\u65f6\u8bbf\u95ee\u540c\u4e00\u6587\u4ef6\u8d44\u6e90&#xff0c;\u8fd9\u53ef\u80fd\u5f15\u53d1\u7ade\u6001\u6761\u4ef6\u548c\u6570\u636e\u635f\u574f\u3002\u5728Qt\u4e2d&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528  QMutex  \u6216  QReadWriteLock  \u6765\u540c\u6b65\u7ebf\u7a0b\u5bf9\u6587\u4ef6\u7684\u64cd\u4f5c\u3002 <\/p>\n<p>\/\/ \u4f7f\u7528QMutex\u4fdd\u62a4\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c<br \/>\nQMutex mutex;<\/p>\n<p>\/\/ \u5728\u5199\u5165\u6587\u4ef6\u524d\u52a0\u9501<br \/>\nmutex.lock();<\/p>\n<p>if (file.open(QIODevice::WriteOnly)) {<br \/>\n    file.write(data);<br \/>\n    file.close();<br \/>\n}<\/p>\n<p>\/\/ \u89e3\u9501<br \/>\nmutex.unlock();<\/p>\n<p> \u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;\u901a\u8fc7  QMutex  \u7684  lock()  \u548c  unlock()  \u65b9\u6cd5\u6765\u786e\u4fdd\u6587\u4ef6\u5199\u5165\u64cd\u4f5c\u7684\u7ebf\u7a0b\u5b89\u5168\u6027\u3002\u7ebf\u7a0b\u5728\u8fdb\u884c\u5199\u5165\u64cd\u4f5c\u524d\u5fc5\u987b\u5148\u83b7\u5f97\u9501&#xff0c;\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u5199\u5165\u6587\u4ef6\u3002 <\/p>\n<h4> 3.2.3 \u5b9e\u9645\u6848\u4f8b\u5206\u6790 <\/h4>\n<p> \u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528QTcpSocket\u7c7b\u548cQFile\u7c7b\u8fdb\u884c\u6587\u4ef6\u4f20\u8f93\u7684\u5b9e\u9645\u6848\u4f8b\u5206\u6790\u3002\u8fd9\u4e2a\u4f8b\u5b50\u5c55\u793a\u4e86\u5982\u4f55\u5728Qt\u4e2d\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u6587\u4ef6\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u3002 <\/p>\n<h5> \u6587\u4ef6\u670d\u52a1\u5668 <\/h5>\n<p> \u670d\u52a1\u5668\u7aef\u4f7f\u7528  QTcpServer  \u76d1\u542c\u6307\u5b9a\u7aef\u53e3&#xff0c;\u63a5\u6536\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42&#xff0c;\u63a5\u6536\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6587\u4ef6\u540d&#xff0c;\u5e76\u628a\u6587\u4ef6\u5185\u5bb9\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u3002 <\/p>\n<p>\/\/ \u6587\u4ef6\u670d\u52a1\u5668\u7aef\u4ee3\u7801\u7247\u6bb5<br \/>\nQTcpServer server;<br \/>\nQFile file;<\/p>\n<p>server.listen(QHostAddress::Any, 12345);<br \/>\n\/\/ \u63a5\u53d7\u5ba2\u6237\u7aef\u8fde\u63a5\u540e&#xff0c;\u5904\u7406\u6587\u4ef6\u53d1\u9001\u903b\u8f91&#8230;<\/p>\n<h5> \u6587\u4ef6\u5ba2\u6237\u7aef <\/h5>\n<p> \u5ba2\u6237\u7aef\u8fde\u63a5\u670d\u52a1\u5668\u540e&#xff0c;\u53d1\u9001\u60f3\u8981\u4e0b\u8f7d\u7684\u6587\u4ef6\u540d&#xff0c;\u63a5\u6536\u670d\u52a1\u5668\u7aef\u53d1\u6765\u7684\u6587\u4ef6\u6570\u636e&#xff0c;\u5e76\u5c06\u63a5\u6536\u5230\u7684\u6570\u636e\u5199\u5165\u672c\u5730\u6587\u4ef6\u3002 <\/p>\n<p>\/\/ \u6587\u4ef6\u5ba2\u6237\u7aef\u4ee3\u7801\u7247\u6bb5<br \/>\nQTcpSocket socket;<br \/>\nsocket.connectToHost(&#034;\u670d\u52a1\u5668\u5730\u5740&#034;, 12345);<br \/>\n\/\/ \u53d1\u9001\u6587\u4ef6\u540d\u7ed9\u670d\u52a1\u5668&#xff0c;\u63a5\u6536\u670d\u52a1\u5668\u53d1\u6765\u7684\u6587\u4ef6\u6570\u636e&#xff0c;\u5199\u5165\u672c\u5730\u6587\u4ef6&#8230;<\/p>\n<p> \u5728\u8fd9\u4e2a\u6848\u4f8b\u4e2d&#xff0c;\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u901a\u8fc7TCP\u8fde\u63a5\u8fdb\u884c\u901a\u4fe1&#xff0c;\u901a\u8fc7QTcpSocket\u7c7b\u7684  connectToHost()  \u3001  read()  \u548c  write()  \u7b49\u65b9\u6cd5\u6765\u5904\u7406\u7f51\u7edc\u901a\u4fe1&#xff0c;\u901a\u8fc7QFile\u7c7b\u6765\u5904\u7406\u672c\u5730\u6587\u4ef6\u7684\u8bfb\u5199\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f&#xff0c;\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5904\u7406\u6587\u4ef6\u4f20\u8f93\u65f6&#xff0c;\u5fc5\u987b\u8003\u8651\u7ebf\u7a0b\u5b89\u5168\u548c\u7f51\u7edc\u901a\u4fe1\u7684\u7a33\u5b9a\u6027\u3002 <\/p>\n<p> \u901a\u8fc7\u8fd9\u4e2a\u6848\u4f8b\u7684\u5206\u6790&#xff0c;\u6211\u4eec\u53ef\u4ee5\u770b\u5230&#xff0c;Qt\u63d0\u4f9b\u7684\u7c7b\u5e93\u8db3\u4ee5\u652f\u6301\u5b9e\u73b0\u4e00\u4e2a\u529f\u80fd\u5b8c\u5907\u7684\u6587\u4ef6\u4f20\u8f93\u5e94\u7528&#xff0c;\u540c\u65f6\u8be5\u6848\u4f8b\u4e5f\u4e3a\u5b9e\u9645\u5f00\u53d1\u4e2d\u7684\u591a\u7ebf\u7a0b\u6587\u4ef6\u4f20\u8f93\u63d0\u4f9b\u4e86\u53c2\u8003\u3002 <\/p>\n<h2> 4. \u7ebf\u7a0b\u6c60\u7ba1\u7406 <\/h2>\n<h3> 4.1 \u7ebf\u7a0b\u6c60\u8bbe\u8ba1\u539f\u7406 <\/h3>\n<h4> 4.1.1 \u7ebf\u7a0b\u6c60\u7684\u57fa\u672c\u6982\u5ff5 <\/h4>\n<p> \u7ebf\u7a0b\u6c60\u662f\u7ba1\u7406\u4e00\u7ec4\u53ef\u4ee5\u7528\u6765\u6267\u884c\u4efb\u52a1\u7684\u7ebf\u7a0b\u7684\u8d44\u6e90\u6c60\u3002\u5728\u7f16\u7a0b\u4e2d&#xff0c;\u7ebf\u7a0b\u6c60\u63d0\u4f9b\u4e86\u4e00\u79cd\u9650\u5236\u7cfb\u7edf\u4e2d\u6267\u884c\u7ebf\u7a0b\u6570\u91cf\u7684\u65b9\u5f0f&#xff0c;\u5b83\u901a\u8fc7\u9884\u5148\u521b\u5efa\u5e76\u7ef4\u62a4\u4e00\u5b9a\u6570\u91cf\u7684\u7ebf\u7a0b\u6765\u5904\u7406\u591a\u4e2a\u5e76\u53d1\u4efb\u52a1&#xff0c;\u907f\u514d\u4e86\u4e3a\u6bcf\u4e2a\u4efb\u52a1\u90fd\u521b\u5efa\u548c\u9500\u6bc1\u7ebf\u7a0b\u7684\u5f00\u9500&#xff0c;\u4ece\u800c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u8d44\u6e90\u5229\u7528\u7387\u3002 <\/p>\n<p> \u7ebf\u7a0b\u6c60\u7684\u6838\u5fc3\u5728\u4e8e\u590d\u7528\u7ebf\u7a0b&#xff0c;\u5b83\u5141\u8bb8\u4efb\u52a1\u6392\u961f\u7b49\u5019\u6267\u884c&#xff0c;\u800c\u7ebf\u7a0b\u7684\u521b\u5efa\u3001\u9500\u6bc1\u548c\u8c03\u5ea6\u662f\u81ea\u52a8\u8fdb\u884c\u7684\u3002\u901a\u5e38\u60c5\u51b5\u4e0b&#xff0c;\u5f53\u7ebf\u7a0b\u6c60\u4e2d\u7684\u7ebf\u7a0b\u88ab\u7528\u5b8c\u540e&#xff0c;\u65b0\u4efb\u52a1\u5c31\u4f1a\u7b49\u5f85&#xff0c;\u76f4\u5230\u6709\u53ef\u7528\u7684\u7ebf\u7a0b\u3002\u8fd9\u79cd\u673a\u5236\u5bf9\u4e8e\u8017\u65f6\u3001\u5f02\u6b65\u6216\u5e76\u884c\u4efb\u52a1\u975e\u5e38\u6709\u6548&#xff0c;\u5982\u7f51\u7edc\u8bf7\u6c42\u5904\u7406\u3001\u6570\u636e\u5e93\u64cd\u4f5c\u7b49\u3002 <\/p>\n<h4> 4.1.2 \u7ebf\u7a0b\u6c60\u7684\u4f18\u52bf\u4e0e\u5e94\u7528\u573a\u666f <\/h4>\n<p> \u7ebf\u7a0b\u6c60\u7684\u4f18\u52bf\u5728\u4e8e&#xff1a; &#8211;  \u964d\u4f4e\u8d44\u6e90\u6d88\u8017  &#xff1a;\u91cd\u590d\u4f7f\u7528\u7ebf\u7a0b&#xff0c;\u907f\u514d\u4e86\u9891\u7e41\u521b\u5efa\u548c\u9500\u6bc1\u7ebf\u7a0b\u7684\u5f00\u9500\u3002 &#8211;  \u63d0\u9ad8\u54cd\u5e94\u901f\u5ea6  &#xff1a;\u4efb\u52a1\u5230\u8fbe\u65f6&#xff0c;\u65e0\u9700\u7b49\u5f85\u7ebf\u7a0b\u521b\u5efa\u5c31\u80fd\u7acb\u5373\u6267\u884c\u3002 &#8211;  \u63d0\u9ad8\u7ebf\u7a0b\u7684\u53ef\u7ba1\u7406\u6027  &#xff1a;\u7ebf\u7a0b\u662f\u7a00\u7f3a\u8d44\u6e90&#xff0c;\u7ebf\u7a0b\u6c60\u53ef\u4ee5\u6709\u6548\u63a7\u5236\u6700\u5927\u5e76\u53d1\u6570&#xff0c;\u907f\u514d\u65e0\u9650\u5236\u521b\u5efa\u7ebf\u7a0b\u5bfc\u81f4\u7684\u7cfb\u7edf\u5d29\u6e83\u3002 &#8211;  \u63d0\u4f9b\u591a\u79cd\u4efb\u52a1\u5904\u7406\u7b56\u7565  &#xff1a;\u53ef\u4ee5\u8bbe\u5b9a\u7ebf\u7a0b\u7684\u6267\u884c\u7b56\u7565&#xff0c;\u5982\u6267\u884c\u8d85\u65f6\u7684\u4efb\u52a1&#xff0c;\u62d2\u7edd\u6267\u884c\u65b0\u7684\u4efb\u52a1\u7b49\u3002 <\/p>\n<p> \u7ebf\u7a0b\u6c60\u7684\u5e94\u7528\u573a\u666f\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e&#xff1a; &#8211;  Web\u670d\u52a1\u5668  &#xff1a;\u5904\u7406HTTP\u8bf7\u6c42\u3002 &#8211;  \u6570\u636e\u5e93\u8fde\u63a5\u6c60  &#xff1a;\u7ba1\u7406\u6570\u636e\u5e93\u8fde\u63a5\u7684\u751f\u547d\u5468\u671f\u3002 &#8211;  \u5e76\u884c\u8ba1\u7b97\u4efb\u52a1  &#xff1a;\u8fdb\u884c\u6570\u636e\u5904\u7406\u6216\u7b97\u6cd5\u8fd0\u7b97\u3002 &#8211;  \u5f02\u6b65\u5904\u7406\u673a\u5236  &#xff1a;\u7528\u4e8e\u5b9e\u73b0\u7cfb\u7edf\u7684\u5f02\u6b65\u4e8b\u4ef6\u5904\u7406\u3002 <\/p>\n<h3> 4.2 Qt\u4e2d\u7684\u7ebf\u7a0b\u6c60\u5b9e\u73b0 <\/h3>\n<h4> 4.2.1 QThreadPool\u7684\u4f7f\u7528\u65b9\u6cd5 <\/h4>\n<p> \u5728Qt\u6846\u67b6\u4e2d&#xff0c;\u7ebf\u7a0b\u6c60\u7684\u5b9e\u73b0\u662f\u901a\u8fc7  QThreadPool  \u7c7b\u6765\u63d0\u4f9b\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u4f7f\u7528\u65b9\u6cd5&#xff1a; <\/p>\n<p>#include &lt;QThreadPool&gt;<br \/>\n#include &lt;QRunnable&gt;<\/p>\n<p>class MyRunnable : public QRunnable {<br \/>\npublic:<br \/>\n    void run() override {<br \/>\n        \/\/ Task to execute<br \/>\n    }<br \/>\n};<\/p>\n<p>int main() {<br \/>\n    \/\/ \u4f7f\u7528\u9ed8\u8ba4\u7684\u7ebf\u7a0b\u6c60<br \/>\n    QThreadPool *pool &#061; QThreadPool::globalInstance();<\/p>\n<p>    \/\/ \u8bbe\u7f6e\u7ebf\u7a0b\u6c60\u7684\u6700\u5927\u7ebf\u7a0b\u6570&#xff0c;Qt\u9ed8\u8ba4\u662fCPU\u6838\u5fc3\u6570<br \/>\n    pool-&gt;setMaxThreadCount(10);<\/p>\n<p>    \/\/ \u6dfb\u52a0\u4efb\u52a1\u5230\u7ebf\u7a0b\u6c60<br \/>\n    MyRunnable *task &#061; new MyRunnable();<br \/>\n    pool-&gt;start(task);<\/p>\n<p>    return 0;<br \/>\n}<\/p>\n<h4> 4.2.2 \u7ebf\u7a0b\u6c60\u7684\u6269\u5c55\u4e0e\u81ea\u5b9a\u4e49 <\/h4>\n<p> \u5982\u679c\u9ed8\u8ba4\u7684\u7ebf\u7a0b\u6c60\u4e0d\u6ee1\u8db3\u7279\u5b9a\u9700\u6c42&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u7ee7\u627f  QRunnable  \u7c7b\u6765\u81ea\u5b9a\u4e49\u4efb\u52a1\u3002\u4e5f\u53ef\u4ee5\u901a\u8fc7\u7ee7\u627f  QThreadPool  \u6765\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7684\u7ebf\u7a0b\u6c60\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u6c60\u7684\u4f8b\u5b50&#xff1a; <\/p>\n<p>#include &lt;QThreadPool&gt;<\/p>\n<p>class CustomThreadPool : public QThreadPool {<br \/>\npublic:<br \/>\n    using QThreadPool::QThreadPool; \/\/ \u7ee7\u627fQThreadPool\u7684\u6240\u6709\u6784\u9020\u51fd\u6570<\/p>\n<p>    void runnableDestructed(QRunnable *runnable) override {<br \/>\n        \/\/ \u81ea\u5b9a\u4e49\u5904\u7406\u4efb\u52a1\u9500\u6bc1\u540e\u7684\u903b\u8f91<br \/>\n        QThreadPool::runnableDestructed(runnable);<br \/>\n    }<br \/>\n};<\/p>\n<p>\/\/ \u4f7f\u7528\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u6c60<br \/>\nCustomThreadPool myPool;<br \/>\nmyPool.start(runnable);<\/p>\n<h4> 4.2.3 \u7ebf\u7a0b\u6c60\u7684\u76d1\u63a7\u4e0e\u8c03\u8bd5 <\/h4>\n<p> \u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f18\u5316\u7ebf\u7a0b\u6c60\u7684\u6027\u80fd&#xff0c;\u53ef\u4ee5\u5bf9\u5176\u8fdb\u884c\u76d1\u63a7\u548c\u8c03\u8bd5\u3002Qt\u63d0\u4f9b\u4e86\u4e00\u4e9b\u673a\u5236\u6765\u5e2e\u52a9\u5f00\u53d1\u8005\u76d1\u63a7\u7ebf\u7a0b\u6c60\u7684\u72b6\u6001&#xff1a; <\/p>\n<ul>\n<li>  maxThreadCount()  &#xff1a;\u83b7\u53d6\u7ebf\u7a0b\u6c60\u5141\u8bb8\u7684\u6700\u5927\u7ebf\u7a0b\u6570\u91cf\u3002 <\/li>\n<li>  activeThreadCount()  &#xff1a;\u83b7\u53d6\u5f53\u524d\u6d3b\u8dc3\u7684\u7ebf\u7a0b\u6570\u91cf\u3002 <\/li>\n<li>  reservedThreadCount()  &#xff1a;\u83b7\u53d6\u7ebf\u7a0b\u6c60\u5df2\u9884\u7559\u7684\u7ebf\u7a0b\u6570\u91cf\u3002 <\/li>\n<li>  totalExpansions()  &#xff1a;\u83b7\u53d6\u7ebf\u7a0b\u6c60\u56e0\u4efb\u52a1\u9700\u6c42\u800c\u6269\u5c55\u7684\u6b21\u6570\u3002 <\/li>\n<\/ul>\n<p> \u9664\u6b64\u4e4b\u5916&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u91cd\u5199  QThreadPool  \u7684\u67d0\u4e9b\u65b9\u6cd5\u6765\u589e\u52a0\u989d\u5916\u7684\u65e5\u5fd7\u8bb0\u5f55\u6216\u76d1\u63a7\u529f\u80fd\u3002 <\/p>\n<p>void CustomThreadPool::start(QRunnable *runnable) {<br \/>\n    \/\/ \u53ef\u4ee5\u6dfb\u52a0\u65e5\u5fd7\u8bb0\u5f55\u548c\u76d1\u63a7\u903b\u8f91<br \/>\n    qDebug() &lt;&lt; &#034;Starting new task!&#034;;<br \/>\n    QThreadPool::start(runnable);<br \/>\n}<\/p>\n<p> \u4e0a\u8ff0\u4ee3\u7801\u7247\u6bb5\u6f14\u793a\u4e86\u5982\u4f55\u5728\u5f00\u59cb\u65b0\u4efb\u52a1\u65f6\u6dfb\u52a0\u65e5\u5fd7\u8bb0\u5f55\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d&#xff0c;\u53ef\u4ee5\u57fa\u4e8e\u8fd9\u4e9b\u4fe1\u606f\u5b9e\u73b0\u66f4\u590d\u6742\u7684\u76d1\u63a7\u529f\u80fd&#xff0c;\u6bd4\u5982\u4efb\u52a1\u6267\u884c\u65f6\u95f4\u7684\u7edf\u8ba1\u3001\u7ebf\u7a0b\u6c60\u72b6\u6001\u7684\u53ef\u89c6\u5316\u76d1\u63a7\u7b49\u3002 <\/p>\n<p>  \u6ce8\u610f  &#xff1a;\u7ebf\u7a0b\u6c60\u867d\u7136\u5e26\u6765\u4e86\u8bb8\u591a\u597d\u5904&#xff0c;\u4f46\u5728\u4f7f\u7528\u65f6\u9700\u8981\u6ce8\u610f\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898&#xff0c;\u786e\u4fdd\u4efb\u52a1\u5728\u5e76\u53d1\u6267\u884c\u65f6\u4e0d\u4f1a\u53d1\u751f\u6570\u636e\u7ade\u4e89\u7b49\u95ee\u9898\u3002\u5728Qt\u4e2d&#xff0c;\u53ef\u4ee5\u4f7f\u7528  QMutex  \u3001  QReadWriteLock  \u7b49\u540c\u6b65\u673a\u5236\u6765\u4fdd\u8bc1\u7ebf\u7a0b\u5b89\u5168\u3002 <\/p>\n<p> \u63a5\u4e0b\u6765\u7684\u7ae0\u8282\u5c06\u8ba8\u8bba\u9519\u8bef\u4e0e\u5f02\u5e38\u5904\u7406&#xff0c;\u4ee5\u53ca\u5982\u4f55\u5728Qt\u9879\u76ee\u4e2d\u59a5\u5584\u7ba1\u7406\u9519\u8bef\u548c\u5f02\u5e38&#xff0c;\u786e\u4fdd\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u548c\u7a33\u5b9a\u6027\u3002 <\/p>\n<h2> 5. \u9519\u8bef\u4e0e\u5f02\u5e38\u5904\u7406 <\/h2>\n<h3> 5.1 \u9519\u8bef\u5904\u7406\u7684\u91cd\u8981\u6027 <\/h3>\n<h4> 5.1.1 \u9519\u8bef\u5904\u7406\u4e0e\u5f02\u5e38\u7684\u6982\u5ff5 <\/h4>\n<p> \u5728\u8f6f\u4ef6\u5f00\u53d1\u4e2d&#xff0c;\u9519\u8bef\u5904\u7406\u662f\u786e\u4fdd\u5e94\u7528\u7a0b\u5e8f\u5065\u58ee\u6027\u548c\u7a33\u5b9a\u8fd0\u884c\u7684\u5173\u952e\u90e8\u5206\u3002\u9519\u8bef\u901a\u5e38\u6307\u7a0b\u5e8f\u8fd0\u884c\u65f6\u53d1\u751f\u7684\u975e\u9884\u671f\u60c5\u51b5&#xff0c;\u800c\u5f02\u5e38\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u9519\u8bef&#xff0c;\u901a\u5e38\u7531\u7a0b\u5e8f\u4ee3\u7801\u6216\u73af\u5883\u56e0\u7d20\u89e6\u53d1&#xff0c;\u8868\u793a\u53d1\u751f\u4e86\u5f02\u5e38\u60c5\u51b5&#xff0c;\u9700\u8981\u7279\u522b\u5904\u7406\u3002 <\/p>\n<p> \u9519\u8bef\u53ef\u4ee5\u662f\u903b\u8f91\u9519\u8bef&#xff0c;\u5982\u6570\u7ec4\u8d8a\u754c\u3001\u65e0\u6548\u7684\u7528\u6237\u8f93\u5165\u7b49&#xff0c;\u4e5f\u53ef\u4ee5\u662f\u7cfb\u7edf\u9519\u8bef&#xff0c;\u5982\u78c1\u76d8\u6ee1\u3001\u7f51\u7edc\u4e2d\u65ad\u7b49\u3002\u5f02\u5e38\u5904\u7406\u673a\u5236\u4f7f\u5f97\u7a0b\u5e8f\u80fd\u591f\u4ee5\u4e00\u79cd\u66f4\u6e05\u6670\u548c\u53ef\u63a7\u7684\u65b9\u5f0f\u5904\u7406\u9519\u8bef&#xff0c;\u51cf\u5c11\u7a0b\u5e8f\u5d29\u6e83\u7684\u98ce\u9669&#xff0c;\u5e76\u63d0\u4f9b\u66f4\u53cb\u597d\u7684\u9519\u8bef\u4fe1\u606f\u7ed9\u6700\u7ec8\u7528\u6237\u3002 <\/p>\n<h4> 5.1.2 \u9519\u8bef\u4e0e\u5f02\u5e38\u5728\u670d\u52a1\u5668\u4e2d\u7684\u4f5c\u7528 <\/h4>\n<p> \u5728\u670d\u52a1\u5668\u5e94\u7528\u7a0b\u5e8f\u4e2d&#xff0c;\u826f\u597d\u7684\u9519\u8bef\u548c\u5f02\u5e38\u5904\u7406\u80fd\u591f\u4fdd\u8bc1\u670d\u52a1\u5668\u5728\u9047\u5230\u95ee\u9898\u65f6\u4ecd\u80fd\u4fdd\u6301\u8fd0\u884c&#xff0c;\u540c\u65f6\u80fd\u591f\u8bb0\u5f55\u5173\u952e\u4fe1\u606f\u4f9b\u5f00\u53d1\u4eba\u5458\u5206\u6790\u3002\u4f8b\u5982&#xff0c;\u5982\u679c\u7f51\u7edc\u8fde\u63a5\u7a81\u7136\u4e2d\u65ad&#xff0c;\u670d\u52a1\u5668\u7a0b\u5e8f\u4e0d\u5e94\u8be5\u76f4\u63a5\u5d29\u6e83&#xff0c;\u800c\u5e94\u8be5\u91ca\u653e\u8fde\u63a5\u8d44\u6e90&#xff0c;\u5e76\u53ef\u4ee5\u8bb0\u5f55\u4e8b\u4ef6\u6216\u901a\u77e5\u7ba1\u7406\u5458\u3002 <\/p>\n<h3> 5.2 Qt\u4e2d\u7684\u9519\u8bef\u5904\u7406\u7b56\u7565 <\/h3>\n<h4> 5.2.1 \u5e38\u89c1\u7684Qt\u9519\u8bef\u548c\u5f02\u5e38\u7c7b\u578b <\/h4>\n<p> Qt\u6846\u67b6\u63d0\u4f9b\u4e86\u4e00\u5957\u4e30\u5bcc\u7684\u9519\u8bef\u5904\u7406\u673a\u5236&#xff0c;\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e&#xff1a; <\/p>\n<ul>\n<li>  QValidator::State  &#xff0c;\u7528\u4e8e\u9a8c\u8bc1\u8f93\u5165\u7684\u6709\u6548\u6027&#xff1b; <\/li>\n<li>  QNetworkReply::NetworkError  &#xff0c;\u7528\u4e8e\u7f51\u7edc\u8bf7\u6c42\u9519\u8bef\u7684\u8868\u793a&#xff1b; <\/li>\n<li>  QException  &#xff0c;\u7528\u4e8e\u81ea\u5b9a\u4e49\u5f02\u5e38\u7684\u57fa\u7c7b\u3002 <\/li>\n<\/ul>\n<h4> 5.2.2 \u9519\u8bef\u5904\u7406\u673a\u5236\u7684\u8bbe\u8ba1 <\/h4>\n<p> Qt\u4e2d\u7684\u9519\u8bef\u5904\u7406\u7b56\u7565\u4e3b\u8981\u4f9d\u8d56\u4e8e\u4fe1\u53f7\u548c\u69fd\u673a\u5236\u3002\u5f53\u9519\u8bef\u6216\u5f02\u5e38\u53d1\u751f\u65f6&#xff0c;\u901a\u5e38\u4f1a\u53d1\u51fa\u4e00\u4e2a\u4fe1\u53f7&#xff0c;\u8be5\u4fe1\u53f7\u643a\u5e26\u76f8\u5173\u7684\u9519\u8bef\u4fe1\u606f\u3002\u7136\u540e\u901a\u8fc7\u8fde\u63a5\u5230\u8be5\u4fe1\u53f7\u7684\u69fd\u51fd\u6570\u6765\u8fdb\u884c\u9519\u8bef\u5904\u7406&#xff0c;\u4f8b\u5982\u8bb0\u5f55\u65e5\u5fd7\u3001\u663e\u793a\u9519\u8bef\u5bf9\u8bdd\u6846\u6216\u8fdb\u884c\u7a0b\u5e8f\u6062\u590d\u64cd\u4f5c\u3002 <\/p>\n<p> \u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u9519\u8bef\u5904\u7406\u793a\u4f8b&#xff1a; <\/p>\n<p>\/\/ \u8fde\u63a5\u7f51\u7edc\u8bf7\u6c42\u5b8c\u6210\u7684\u4fe1\u53f7\u5230\u69fd\u51fd\u6570<br \/>\nconnect(networkReply, &amp;QNetworkReply::finished, this, &amp;MyClass::onRequestFinished);<\/p>\n<p>\/\/ \u69fd\u51fd\u6570&#xff0c;\u7528\u4e8e\u5904\u7406\u8bf7\u6c42\u5b8c\u6210\u65f6\u7684\u9519\u8bef<br \/>\nvoid MyClass::onRequestFinished() {<br \/>\n    if (QNetworkReply *reply &#061; qobject_cast&lt;QNetworkReply *&gt;(sender())) {<br \/>\n        if (reply-&gt;error() &#061;&#061; QNetworkReply::NoError) {<br \/>\n            \/\/ \u6b63\u5e38\u5904\u7406<br \/>\n            processReplyData(reply-&gt;readAll());<br \/>\n        } else {<br \/>\n            \/\/ \u5904\u7406\u9519\u8bef<br \/>\n            qDebug() &lt;&lt; &#034;Request failed:&#034; &lt;&lt; reply-&gt;errorString();<br \/>\n        }<br \/>\n        reply-&gt;deleteLater();<br \/>\n    }<br \/>\n}<\/p>\n<h4> 5.2.3 \u5b9e\u8df5\u6848\u4f8b&#xff1a;\u5f02\u5e38\u6355\u83b7\u548c\u65e5\u5fd7\u8bb0\u5f55 <\/h4>\n<p> \u5728\u5b9e\u9645\u7684Qt\u5e94\u7528\u5f00\u53d1\u4e2d&#xff0c;\u5f02\u5e38\u6355\u83b7\u548c\u65e5\u5fd7\u8bb0\u5f55\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u73af\u8282\u3002\u901a\u8fc7\u4f7f\u7528  try-catch  \u5757&#xff0c;\u53ef\u4ee5\u6355\u83b7\u6f5c\u5728\u7684\u5f02\u5e38&#xff0c;\u5e76\u901a\u8fc7  QDir  \u548c  QFile  \u7c7b\u5c06\u9519\u8bef\u4fe1\u606f\u8bb0\u5f55\u5230\u6587\u4ef6\u4e2d\u3002 <\/p>\n<p>try {<br \/>\n    \/\/ \u8fd9\u91cc\u53ef\u80fd\u662f\u8fdb\u884c\u6587\u4ef6\u64cd\u4f5c\u6216\u7f51\u7edc\u8c03\u7528\u7684\u4ee3\u7801<br \/>\n} catch (const QException &amp;e) {<br \/>\n    \/\/ \u5f02\u5e38\u5904\u7406<br \/>\n    QFile logFile(&#034;error.log&#034;);<br \/>\n    if (logFile.open(QIODevice::WriteOnly | QIODevice::Append)) {<br \/>\n        QTextStream out(&amp;logFile);<br \/>\n        out &lt;&lt; &#034;Exception caught: &#034; &lt;&lt; e.what() &lt;&lt; &#034;\\\\n&#034;;<br \/>\n        logFile.close();<br \/>\n    }<br \/>\n}<\/p>\n<p> \u5f02\u5e38\u5904\u7406\u548c\u65e5\u5fd7\u8bb0\u5f55\u80fd\u591f\u5e2e\u52a9\u5f00\u53d1\u8005\u5feb\u901f\u5b9a\u4f4d\u548c\u89e3\u51b3\u95ee\u9898&#xff0c;\u5bf9\u4e8e\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u7684\u9519\u8bef\u5904\u7406\u5c24\u4e3a\u91cd\u8981\u3002\u4f7f\u7528  QMutex  \u548c  QReadWriteLock  \u7b49\u540c\u6b65\u673a\u5236\u786e\u4fdd\u7ebf\u7a0b\u5b89\u5168&#xff0c;\u907f\u514d\u591a\u7ebf\u7a0b\u5f15\u53d1\u7684\u7ade\u6001\u6761\u4ef6\u548c\u6b7b\u9501\u3002 <\/p>\n<p> 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