Qt5 HTTP获取JSON数据及解析测试代码

QNetworkAccessManager manager;
QNetworkRequest req;
req.setUrl(QUrl( "http://localhost:52280/?c=base&a=invlist" ));
req.setHeader(QNetworkRequest::ContentTypeHeader,  "application/json" );
QNetworkReply *reply = manager.post(req, QByteArray( "{}" ));
QEventLoop ev;
connect(reply, SIGNAL(finished()), &ev, SLOT(quit()));
ev.exec(QEventLoop::ExcludeUserInputEvents);
if  (reply->error() == QNetworkReply::NoError)
{
    QByteArray ba = reply->readAll();
    QJsonParseError jsonpe;
    QJsonDocument json = QJsonDocument::fromJson(ba, &jsonpe);
    if  (jsonpe.error == QJsonParseError::NoError)
    {
        if  (json.isObject())
        {
            QJsonObject obj = json.object();
            if  (obj.contains( "error" ))
            {
                qDebug() <<  "error:"  << obj[ "error" ];
            }
            else
            {
                QJsonArray jarray = obj[ "invlist" ].toArray();
                for  ( int  row = 0; row < jarray.size(); row++)
                {
                    qDebug() <<  "====Row["  << row <<  "] Start===================" ;
                    QJsonObject jobj = jarray[row].toObject();
                    for  (QJsonObject::Iterator it = jobj.begin();
                         it != jobj.end(); it++)
                    {
                        qDebug() << it.key() <<  " => "  << it.value();
                    }
                }
            }
        }
        else
        {
            qDebug() <<  "error, shoud json object" ;
        }
    }
    else
    {
        qDebug() <<  "error:"  << jsonpe.errorString();
    }
}
else
{
    qDebug() <<  "error:"  << reply->errorString();