Qt Tcp 客户机服务器 本地连接.

#include "widget.h" #include "ui_widget.h" Widget::Widget(QWidget *parent) : QWidget(parent) , ui(new Ui::Widget) { ui->setupUi(this); m_tcpServer = new QTcpServer(this); //监听 客户端发来的请求 if(!m_tcpServer->listen(QHostAddress::Any,88888)) { qDebug() <<m_tcpServer->errorString(); qDebug()<<"aaa"; close(); // } connect(m_tcpServer,&QTcpServer::newConnection,this,&Widget::onNewConnect); connect(m_tcpServer,&QTcpServer::newConnection,this,&Widget::onSendMessage); } Widget::~Widget() { delete ui; } void Widget::onNewConnect() { //当前连接来的客户端 m_tcpSocket = m_tcpServer->nextPendingConnection(); connect(m_tcpSocket,&QTcpSocket::disconnected,m_tcpSocket,&QTcpSocket::deleteLater); // connect(m_tcpSocket,&QTcpSocket::readyRead,this,&Widget::onReadMessgae); } void Widget::onSendMessage() { QString str = QString::fromLocal8Bit("你好,客户端"); m_tcpSocket->write(str.toUtf8()); ui->label->setText("发送数据成功 "); } void Widget::onReadMessgae() { QByteArray bt = m_tcpSocket->readAll(); ui->readLable->setText(bt); } void Widget::on_pushButton_clicked() { m_tcpSocket->write(ui->writeEidt->text().toUtf8()); m_tcpSocket->flush(); }