原 QNetworkAccessManager实现curl上传表单文件

 心酸的过程我就不说了，直接上菜。

    如何用Qt实现：curl -F [email protected] http://www.fatjb.com/uploadfile

QFile file(m_sTaskPlistPath);
if(file.exists())
{
    if(!file.open(QIODevice::ReadOnly))
    {
        QMessageBox::warning(this, tr("Warning"), tr("打开task.plist失败！"), QMessageBox::Yes);
        return;
    }
    QByteArray fileContent = file.readAll();
    file.close();
    

    QString sCrlf="\r\n";
    qsrand(QDateTime::currentDateTime().toTime_t());
    QString b=QVariant(qrand()).toString()+QVariant(qrand()).toString()+QVariant(qrand()).toString();
    QString sBoundary="---------------------------"+b;
    QString sEndBoundary=sCrlf+"--"+sBoundary+"--"+sCrlf;
    QString sContentType="multipart/form-data; boundary="+sBoundary;
    sBoundary="--"+sBoundary+sCrlf;
    QByteArray boundary=sBoundary.toAscii();
    
    QByteArray sendData;

    sendData.append(boundary);
    sBoundary = sCrlf + sBoundary;
    boundary = sBoundary.toAscii();
    sendData.append(QString("Content-Disposition: form-data; name=\"file\"; filename=\""+QString(m_sTaskPlistPath.toUtf8().constData())+"\""+sCrlf).toAscii());
    sendData.append(QString("Content-Transfer-Encoding: 8bit"+sCrlf).toAscii());
    sendData.append(sCrlf.toAscii());
    sendData.append(fileContent);

    sendData.append(sEndBoundary.toAscii());
    

    QNetworkRequest req(QUrl(m_sAddress+m_sUploadPath));
    req.setHeader(QNetworkRequest::ContentTypeHeader, sContentType.toAscii());
    req.setHeader(QNetworkRequest::ContentLengthHeader, QVariant(sendData.size()).toString());
    QNetworkReply* pReply = m_pManager->post(req, sendData);
    connect(pReply, SIGNAL(error(QNetworkReply::NetworkError)), SLOT(NetworkError(QNetworkReply::NetworkError)));
}
else
{
    QMessageBox::warning(this, tr("Warning"), tr("task.plist不存在！"), QMessageBox::Yes);
}

    为什么我会知道？下个wireshark抓包，然后跟着正确包慢慢调就知道了，果然还是不能懒。

FROM:  https://my.oschina.net/chrisforbt/blog/483103