QT：轻松获取网页源码

来源：互联网发布：linux informix 重启编辑：程序博客网时间：2024/06/10 11:36

获取网页源码的小例子，代码很简单，就不多作解释了。

不过一定要注意网页的编码问题，否则会出现乱码的！！！

#include <QtCore>    #include <QtNetwork>      //网页地址    const QString URLSTR = "http://www.csdn.net/";    //储存网页代码的文件    const QString FILE_NAME = "code.html";      int main(int argc, char **argv)    {        QCoreApplication app(argc, argv);        QUrl url(URLSTR);        QNetworkAccessManager manager;        QEventLoop loop;        QTextCodec *codec;      QNetworkReply *reply;        qDebug() << "Reading html code form " << URLSTR;        reply = manager.get(QNetworkRequest(url));        //请求结束并下载完成后，退出子事件循环        QObject::connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));        //开启子事件循环        loop.exec();          //获取源码，打开文件QFile file(FILE_NAME);  if( !file.open(QIODevice::WriteOnly | QIODevice::Text) ){qDebug() << "Cannot open the file: " << FILE_NAME;return 0;}QTextStream out(&file);  QString codeContent = reply->readAll();  //将获取到的网页源码写入文件//一定要注意编码问题，否则很容易出现乱码的codec = QTextCodec::codecForHtml(codeContent.toAscii());  codeContent = codec->toUnicode(codeContent.toAscii());  out.setCodec(codec);out << codeContent << endl;  file.close();  qDebug() << "Finished, the code have written to " << FILE_NAME;        return 0;    }