当 QNetworkReply::error() != NoError 时,QNetworkReply::readAll 的响应为空。这是正常的吗?
我有一个 Node+Express 服务器,它总是在 http 状态不同 200 的情况下发送详细描述;我无法从 QNAM 上的 Qt 客户端获得此描述。Qt 版本为 5.3,操作系统 Win 7 64b。
这是我的代码,真的我认为这无济于事。
PendingRequest *Foo::sendMsg(QStandardItem *requestItem, HTTP_METHOD_ID method, QString path)
{
PendingRequest *pReq = new PendingRequest(method);
QString url = QString("https://%1:%2%3").arg(host, QString::number(port), path);
QNetworkRequest qNetReq = QNetworkRequest(QUrl(url));
//set headears
qNetReq.setHeader(QNetworkRequest::KnownHeaders::UserAgentHeader, HttpUserAgent);
qNetReq.setRawHeader("Connection", "Keep-Alive");
if(!credentials.isEmpty())
{
qNetReq.setRawHeader("Authorization", QByteArray("Basic ")+credentials);
}
if(!sessionId.isEmpty())
{
qNetReq.setRawHeader("Session-Id", sessionId);
}
//send request
QNetworkReply *reply;
if(method == HTTP_METHOD_ID::POST)
{
qNetReq.setHeader(QNetworkRequest::KnownHeaders::ContentTypeHeader, "application/json");
QByteArray data = outHandlerList[outHandlerIndex](requestItem);
reply = netManager.post(qNetReq, data);
}
else
{
reply = netManager.get(qNetReq);
}
connect(reply, SIGNAL(finished()), this, SLOT(handleResponse()));
connect(reply, SIGNAL(sslErrors(QList<QSslError>)), this, SLOT(handleSslErrors(QList<QSslError>)));
return pReq;
}
这是我处理响应的地方:
void Foo::handleResponse()
{
QNetworkReply *reply = qobject_cast<QNetworkReply *>(sender());
if(reply->hasRawHeader("Session-Id"))
sessionId = reply->rawHeader("Session-Id");
PendingRequest *pReq = pendingRequestMap.contains(reply) ? pendingRequestMap.take(reply) : 0;
Q_ASSERT(pReq);
QStandardItem *responseItem = 0;
QString error;
if(reply->error() != QNetworkReply::NoError)
{
qDebug() << "readAll: ", reply->readAll(), "error: ", reply->errorString();
error = reply->errorString();
}
else
{
responseItem = inHandlerList[pReq->inHandlerIndex](reply, error, pReq);
}
reply->deleteLater();
}
非常感谢你的帮助。