Qt Http get

 

1、直接建立連接，向網站發送http請求

QNetworkAccessManager *accessManager = new QNetworkAccessManager(this);
connect(accessManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyFinished(QNetworkReply*)));
accessManager->get(QNetworkRequest(QUrl("http:xxxxx")));

2、在槽函數中打印【注意：如果返回字節數過大,qDebug是打印不出來的,可通過size查看返回字節數】

void MainWindow::replyFinished(QNetworkReply *reply)
{
    if (reply->error() == QNetworkReply::NoError)
    {
        QByteArray bytes = reply->readAll();
        qDebug() << bytes;
    }
    else
    {
        qDebug() << "finishedSlot errors here";
        qDebug( "found error .... code: %d\n", (int)reply->error());
        qDebug(qPrintable(reply->errorString()));
    }
}