调用QTcpServer时程序崩溃

Programm crashes when QTcpServer is called

本文关键字：崩溃 程序 QTcpServer 调用      更新时间：2023-10-16

我正在尝试一个非常非常简单的QT网络程序。由于某些原因，它在没有任何错误消息的情况下执行时崩溃，因为它没有按预期将任何输出打印到命令行。这是代码：

qtTCPservertest.pro

QT       += core
QT       += network
QT       -= gui
TARGET   = qtTCPservertest
CONFIG   += console
CONFIG   -= app_bundle
TEMPLATE = app

SOURCES += main.cpp 
    theserver.cpp
HEADERS += 
    theserver.h

Server.h

#ifndef THESERVER_H
#define THESERVER_H
#include <QTcpServer>
#include <stdio.h>

class theServer : public QTcpServer{
    Q_OBJECT
public:
    theServer();
    ~theServer();
    void goOnline();
};
#endif // THESERVER_H

服务器.cpp

#include "theserver.h"
theServer::theServer()
{
}
theServer::~theServer()
{
}
void theServer::goOnline()
{
       bool status = false;
       unsigned int portNum = 5200;
       status = this->listen(QHostAddress::Any, portNum );
       // Check, if the server did start correctly or not
       if( status == true )
           printf("Server upn");
       else
           printf("Server downn");
}

和main.cpp

#include <QCoreApplication>
#include <stdio.h>
#include "theserver.h"
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    printf("Testn");
    theServer* aServer = new theServer();
    aServer->goOnline();
    aServer->~theServer();
    return a.exec();
}

有人知道我哪里错了吗？既然没有错误，我就完全没有头绪。它只是没有打印出任何东西，它只是告诉我按任何键关上窗户，就好像它像往常一样结束了。

谢谢你的建议。

以下是编译并适用于我的代码（Qt 5.5）：

TheServer.h

#ifndef THESERVER_H
#define THESERVER_H
#include <QTcpServer>
class TheServer : public QTcpServer
{
    Q_OBJECT
public:
    TheServer(QObject *pParent = nullptr);
    void goOnline();
};
#endif // THESERVER_H

TheServer.cpp

#include <QDebug>
#include "TheServer.h"
TheServer::TheServer(QObject *pParent)
    : QTcpServer(pParent)
{
}
void TheServer::goOnline()
{
    bool status = listen(QHostAddress::Any, 5200);
    if (status) {
        qDebug() << "Server up";
    } else {
        qDebug() << "Server down";
    }
}

main.cpp

#include <QCoreApplication>
#include "TheServer.h"
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    TheServer server;
    server.goOnline();
    return a.exec();
}
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