C++下TCP网络通信Tcp_Demo客户端例子(Qt+VS)_qt网络通信

下面是一个简单的tcp网络通信客户端demo。

头文件TcpNetWork.h

#pragma once
 
#include <QTcpSocket>
#include <QHostAddress>
 
 
class TcpNetwork
{
 
public:
	TcpNetwork();
 
	~TcpNetwork();
 
	void networkInit(QString ip, int port);
	void sendData(QString data);
	QString readyRead();
private:
	QTcpSocket *socket = nullptr;
};

源文件TcpNetWork.cpp

#include "TcpNetwork.h"
 
TcpNetwork::TcpNetwork()
{
}
TcpNetwork::~TcpNetwork()
{
	if(socket != nullptr)
	{
		socket->disconnectFromHost();
		socket = nullptr;
	}
}
void TcpNetwork::networkInit(QString ip, int port)
{
	socket = new QTcpSocket();
	socket->connectToHost(QHostAddress(ip), port);
	connect(socket, &QTcpSocket::readyRead, this, &TcpNetwork::readyRead);
}
void TcpNetwork::sendData(QString data)
{
	if(socket != nullptr)
	{
		socket->write(data.toUtf8().constData());
	}
}
QString TcpNetwork::readyRead()
{
	QString data;
	if(socket != nullptr)
	{
		data = socket->readAll();
	}
	return data;
}

实例化调用main.cpp

#include "TCP_Demo.h"
#include <QtWidgets/QApplication>
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    TCP_Demo w;
    w.show();
    return a.exec();
}

实例化调用demo头文件TCP_Demo.h

#pragma once
 
#include <QtWidgets/QMainWindow>
#include "ui_TCP_Demo.h"
#include "TcpNetwork.h"
 
class TCP_Demo : public QMainWindow
{
    Q_OBJECT
 
public:
    TCP_Demo(QWidget *parent = nullptr);
    ~TCP_Demo();
 
private:
    Ui::TCP_DemoClass ui;
    TcpNetwork      m_TcpNetwork;
};

实例化调用demo源文件TCP_Demo.cpp

#include "TCP_Demo.h"
 
 
TCP_Demo::TCP_Demo(QWidget *parent)
    : QMainWindow(parent)
{
    ui.setupUi(this);
    m_TcpNetwork.networkInit("192.168.0.100", 5555);
}
 
TCP_Demo::~TCP_Demo()
{}

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