帮我写个基于qt的多线程udp服务器示例

好的，我可以为您提供一个基于qt的多线程udp服务器示例。以下是示例代码：

#include <QtNetwork/QUdpSocket>
#include <QtCore/QThread>

class UdpServer : public QObject
{
Q_OBJECT

public:
UdpServer(QObject *parent = nullptr) : QObject(parent)
{
m_socket.bind(QHostAddress::Any, 1234);

connect(&m_socket, &QUdpSocket::readyRead, this, &UdpServer::onReadyRead);
}

signals:
void messageReceived(const QString &message);

private slots:
void onReadyRead()
{
while (m_socket.hasPendingDatagrams()) {
QByteArray datagram;
datagram.resize(m_socket.pendingDatagramSize());
QHostAddress sender;
quint16 senderPort;

m_socket.readDatagram(datagram.data(), datagram.size(),
&sender, &senderPort);

emit messageReceived(QString::fromUtf8(datagram));
}
}

private:
QUdpSocket m_socket;
};

class UdpServerThread : public QThread
{
Q_OBJECT

public:
UdpServerThread(QObject *parent = nullptr) : QThread(parent) {}

signals:
void messageReceived(const QString &message);

protected:
void run() override
{
UdpServer server;
connect(&server, &UdpServer::messageReceived, this, &UdpServerThread::messageReceived);

exec();
}
};

int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);

UdpServerThread thread;
thread.start();

QObject::connect(&thread, &UdpServerThread::messageReceived, [](const QString &message) {
qDebug() << "Received message:" << message;
});

return app.exec();
}

希望这个示例对您有所帮助。