qt客户端与服务端的网络通信 实测有效

#include "qtserver.h" #include "ui_qtserver.h" QtServer::QtServer(QWidget *parent) : QMainWindow(parent), ui(new Ui::QtServer) { ui->setupUi(this); //创建监听的服务器对象 ui->port->setText("8899"); ui->ip->setText("127.0.0.1"); setWindowTitle(QString("Client")); ui->disconnect->setDisabled(true); m_tcp =new QTcpSocket(this); //检测是否可以接收数据 connect(m_tcp,&QTcpSocket::readyRead,this,[=]() { QByteArray data=m_tcp->readAll(); ui->record->append("服务器say:"+data); }); connect(m_tcp,&QTcpSocket::disconnected,this,[=]() { m_tcp->close(); m_tcp->deleteLater();//delete m_tcp m_status->setPixmap(QPixmap(":/disconnect.jpg").scaled(20,20)); ui->record->append("服务器和客户端断开了连接..."); ui->connect->setDisabled(false); ui->disconnect->setEnabled(false); }); connect(m_tcp,&QTcpSocket::connected,this,[=]() { m_status->setPixmap(QPixmap(":/connect.jpg").scaled(20,20)); ui->record->append("已经连接成功了服务器..."); ui->connect->setDisabled(true); ui->disconnect->setEnabled(true); }); //状态栏 m_status=new QLabel; m_status->setPixmap(QPixmap(":/disconnect.jpg").scaled(20,20)); ui->statusBar->addWidget(new QLabel("连接状态： ")); ui->statusBar->addWidget(m_status); } QtServer::~QtServer() { delete ui; } void QtServer::on_sendMsg_clicked() { QString msg=ui->msg->toPlainText(); m_tcp->write(msg.toUtf8()); ui->record->append("客户端say:"+msg); } void QtServer::on_connect_clicked() { QString ip=ui->ip->text(); unsigned short port =ui->port->text().toUShort(); m_tcp->connectToHost(QHostAddress(ip),port); } void QtServer::on_disconnect_clicked() { m_tcp->close(); ui->connect->setDisabled(false); ui->disconnect->setEnabled(false); }