在QT中如何将网络图片保存到本地

 1 void saveImage(const QString url)
 2 {
 3     QNetworkRequest request(url);
 4     QNetworkAccessManager *networkManager = new QNetworkAccessManager();
 5     QNetworkReply *reply = networkManager->get(request);
 6     QEventLoop eventLoop;
 7     QObject::connect(reply, SIGNAL(finished()), &eventLoop, SLOT(quit()));
 8     eventLoop.exec();
 9     if(reply->error() == QNetworkReply::NoError)
10     {
11         auto data = reply->readAll();
12         auto image = QImage::fromData(data);
13         image.save("E:/test.png");
14     }
15     else
16     {
17         qDebug() << reply->errorString();
18     }
19 }

说明：第12,13行通过QImage保存图片数据，也可通过QFile来实现。