Qt 线程中使用httpclient发送 post 请求

QT 5.92
(1) 在构造函数中初始化QNetworkAccessManager
m_manager = new QNetworkAccessManager();
(2) 线程启动之前绑定信号和槽
QEventLoop temp_loop;
connect(m_manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyFinish(QNetworkReply*)), Qt::QueuedConnection);
QNetworkRequest req;
req.setRawHeader(“Content-Type”, “application/json”);
req.setUrl(QUrl(url));
QNetworkReply* reply = m_manager->post(req, QJsonDocument(params).toJson());
connect(reply, SIGNAL(finished()), &temp_loop, SLOT(quit()));
temp_loop.exec();
(3) 线程内槽函数处理
void BasicsDataThread::replyFinish(QNetworkReply* pobj)
{
if (pobj->error() != QNetworkReply::NoError)
{
webserviceerror();
return;
}
QByteArray buf = pobj->readAll();
QJsonDocument temp = QJsonDocument::fromJson(buf);
QJsonObject jsonobj = temp.object();
webservicenoerror(jsonobj);
TDGISToolsCommon::output_log(buf);
}