获取网页代码时出现乱码解决思路

#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.txt";    int main(int argc, char **argv)  {      QCoreApplication app(argc, argv);      QUrl url(URLSTR);      QNetworkAccessManager manager;      QEventLoop loop;      qDebug() << "Reading code form " << URLSTR;      //发出请求      QNetworkReply *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();        //将读到的信息写入文件      QString code = reply->readAll();      QFile file(FILE_NAME);      file.open(QIODevice::WriteOnly);      QTextStream out(&file);      out << code << endl;      file.close();      qDebug() << "Finished, the code have written to " << FILE_NAME;      return 0;  }