基于Qt开发出来的服务器和客户端例程

#include "Widget.h" #include "ui_Widget.h" #include <QTcpServer> #include <QTcpSocket> #include <QHostInfo> //主机信息类 #include <QMessageBox> Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); mServer = new QTcpServer; } Widget::~Widget() { delete ui; } //获取主机信息 void Widget::on_HostInfo_Btn_clicked() { QString hostName = QHostInfo::localHostName();//获取本机名 QHostInfo info; //创建主机对象 info = QHostInfo::fromName(hostName);//通过主机名，返回主机信息对象 QList<QHostAddress> addressLi = info.addresses();//获取主机网络IP地址 //QList<QHostAddress> addressLi = QHostInfo info = QHostInfo::fromName(hostName).addresses(); ui->textEdit->setText("本机地址："); ui->textEdit->append(hostName); foreach(QHostAddress address,addressLi)//遍历容器 { ui->textEdit->append("**********************"); ui->textEdit->append(address.toString()); } } //端口监听 void Widget::on_Listen_Btn_clicked() { if( ui->lineEdit_Port->text().isEmpty()) return; quint16 Port = ui->lineEdit_Port->text().toInt();//获取填写的端口号 bool flag = mServer->listen(QHostAddress::Any, Port);//服务器监听 if(flag) { //监听成功 QMessageBox::information(this,"提示", "绑定成功"); //当有客户端成功连接到服务器时 connect(mServer, &QTcpServer::newConnection, this, [this](){ //准备接收并处理消息 //返回下一个即将连接的套接字 mSocket = mServer->nextPendingConnection(); //当有新消息时，会触发readyRead准备读取数据 connect(mSocket, &QTcpSocket::readyRead, this, [this](){ char str[1024] = {0}; mSocket->read(str, sizeof(str)); ui->textEditRecv_Server->append(str); }); }); } else { //监听失败 QMessageBox::warning(this, "警告", "监听失败"); } } //发送消息 void Widget::on_SendBtn_clicked() { mSocket->write(ui->lineEdit_Send->text().toUtf8()); }