Qt实现QTcpClient实现客户端

Qt实现QTcpClient实现客户端

//初始化对象，并定义Socket读写信号处理方法

MyTcpClient::MyTcpClient(QWidget *parent) : QMainWindow(parent)

{

QTcpSocket tcpClient=new QTcpSocket();

tcpClient->abort(); //取消原有连接

connect(tcpClient, &QTcpSocket::readyRead,this, &MyTcpClient::ReadData);    //获取数据

void (QAbstractSocket::*p)(QAbstractSocket::SocketError) =&QAbstractSocket::error;  //函数指针

connect(tcpClient, p, this, &MyTcpClient::ReadError);   //检测异常

}

//连接server

void MyTcpClient::connectServer()

{

tcpClient->connectToHost("192.168.170.1", 8951);

if(tcpClient->waitForConnected(1000))

{

    qDebug()<<"connect success";

}

else

{

    qDebug()<<"connect fail";

}

}

//断开连接

void MyTcpClient::disconnect()

{

tcpClient->disconnectFromHost();

qDebug()<<"disconnect";

}

//发送数据

void MyTcpClient::sendData()

{

QString data="Hello World\n";

tcpClient->write(data.toLatin1());

}

//接受数据

void MyTcpClient::ReadData()

{

QByteArray buffer=tcpClient->readAll();

if(!buffer.isEmpty())

{

    qDebug()<<buffer; 

}

}

//接受异常

void MyTcpClient::ReadError(QAbstractSocket::SocketError e)

{

tcpClient->disconnectFromHost();

qDebug()<<"socket error: "<<e;

qDebug()<<tcpClient->errorString();

}

原文链接：https://blog.csdn.net/quietbxj/article/details/106575812