Question

我在Qt编写简单的客户端服务器程序，服务器是多线程的。对于一台服务器，它可以正常工作，它可以从客户端向服务器发送消息，但是以多线程形式它不起作用，它连接到线程并且还显示消息＆＃34;客户端连接＆＃34;但它无法显示客户端发送的消息！我搜索了很多芽，我无法找到问题所在，以及任何解决方案。这是我的代码：请你帮助我好吗。提前谢谢。

myserver.cpp

#include "myserver.h"
#include "mythread.h"

myserver::myserver(QObject * parent):  QTcpServer(parent)
{
}

void myserver::startserver()
{
    int port = 6666;
    if (!this - > listen(QHostAddress::Any, port)) {
        qDebug() << "Could not start server ";
    } else {
        qDebug() << "Listening to port ";
    }
}

void myserver::incomingConnection(qintptr socketDescriptor) 
{
    qDebug() << socketDescriptor << " Connecting...";

    mythread * thread = new mythread(socketDescriptor, this);

    connect(thread, SIGNAL(finished()), thread, SLOT(deleteLater()));

    thread - > start();
}

mythread.cpp

#include "mythread.h"
#include "myserver.h"

mythread::mythread(qintptr ID, QObject *parent) : QThread(parent)
{
    this->socketDescriptor = ID;
}

void mythread::run()
{
    qDebug() << " Thread started";

    socket = new QTcpSocket();

    if(!socket->setSocketDescriptor(this->socketDescriptor)) {
        emit error(socket->error());
        return;
    }

    connect(socket, SIGNAL(readyRead()), this, SLOT(readSocket()));

    qDebug() << socketDescriptor << " Client connected";
}

void mythread::readSocket()
{
    QByteArray Data = socket->readAll();

    qDebug()<< socketDescriptor <<" Data in: " << Data;

    socket->write(Data);
}

Answer 1

如果您阅读documentation for the QThread::run function，您会看到

从此方法返回将结束线程的执行。

您需要调用QThread::exec函数进入线程事件循环。

多线程服务器不起作用

1 个答案: