QtQNetworkAccessManager post方法仅在主线程中工作

我的Qt QNetworkAccessManager有问题。我想用它与我的web服务器交互，后者提出了一个POST api。

在我的主函数中，我可以使用QNetworkAccessManager:：post((。我的服务器从客户端接收数据。但是，如果我在另一个线程中移动post函数，我的服务器就会收到任何东西。

下面是我的代码示例：

工作代码：

#include <iostream>
#include <QNetworkRequest>
#include <QUrl>
#include <QNetworkAccessManager>
#include <QCoreApplication>
#include <thread>
#include <QThread>
#include <QObject>
#include <QNetworkReply>
class PostClass: public QObject {
Q_OBJECT
public:
PostClass() {
manager = new QNetworkAccessManager(this);
connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(onfinish(QNetworkReply*)));
};
QNetworkAccessManager* manager = nullptr;
public slots:
void post() {
const QUrl url("http://[ip:port]/users");
QNetworkRequest req(url);
manager->get(req);
QNetworkRequest req1(QUrl("[ip:port]/event"));
req1.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
qDebug() << "Send new request";
QByteArray data(R"({"data": "QtGroupHEllo"})");
manager->post(req1, data);
};
void onfinish(QNetworkReply* rep) {
qDebug() << "reply delete!";
rep->deleteLater();
qDebug() << "https post_request done!";
};
};
class ThreadTmp: public QThread {
Q_OBJECT
public:
ThreadTmp() = default;
public slots:
void onfinish(QNetworkReply* rep) {
rep->deleteLater();
qDebug() << "reply delete!";
qDebug() << "https post_request done!";
};
signals:
void postRequest();
protected:
void run() override {
while (1) {
emit postRequest();
sleep(1);
}
}
};

int main(int argc, char* argv[]) {
QCoreApplication app (argc, argv);
std::cout << "Hello, World!" << std::endl;
PostClass postObj;
ThreadTmp tmp();
QObject::connect(&tmp, SIGNAL(postRequest()), &postObj, SLOT(post()));
tmp.start();
return app.exec();
}
#include "main.moc"

但是，如果我在ThreadTmp类中移动PostClass实例，在run函数中，只有get工作，post不工作，因为在我的服务器中，我只收到get请求，而没有收到post请求：

#include <iostream>
#include <QNetworkRequest>
#include <QUrl>
#include <QNetworkAccessManager>
#include <QCoreApplication>
#include <thread>
#include <QThread>
#include <QObject>
#include <QNetworkReply>
class PostClass: public QObject {
Q_OBJECT
public:
PostClass() {
manager = new QNetworkAccessManager(this);
connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(onfinish(QNetworkReply*)));
// connect(manager, SIGNAL(finished(QNetworkReply*)), manager, SLOT(deleteLater()));
};
QNetworkAccessManager* manager = nullptr;
public slots:
void post() {
const QUrl url("http://[ip:port]/users");
QNetworkRequest req(url);
manager->get(req);
QNetworkRequest req1(QUrl("http://[ip:port]/event"));
req1.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
qDebug() << "Send new request";
QByteArray data(R"({"data": "QtGroupHEllo"})");
manager->post(req1, data);
};
void onfinish(QNetworkReply* rep) {
qDebug() << "reply delete!";
rep->deleteLater();
qDebug() << "https post_request done!";
};
};
class ThreadTmp: public QThread {
Q_OBJECT
public:
ThreadTmp() = default;
public slots:
void onfinish(QNetworkReply* rep) {
rep->deleteLater();
qDebug() << "reply delete!";
qDebug() << "https post_request done!";
};
signals:
void postRequest();
protected:
void run() override {
PostClass postObj;
connect(this, SIGNAL(postRequest()), &postObj, SLOT(post()));
while (1) {
emit postRequest();
sleep(1);
}
}
};

int main(int argc, char* argv[]) {
QCoreApplication app (argc, argv);
std::cout << "Hello, World!" << std::endl;
ThreadTmp tmp();
tmp.start();
return app.exec();
}
#include "main.moc"

我不知道我为什么会有这种行为。。。