基于Qt5的UDP局域网通信软件（简单）.zip

#include "widget.h" #include "ui_widget.h" #include <QHostAddress> #include <QDebug> #include <QTime> #include <QKeyEvent> Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); this->resize(450,300); this->setWindowTitle("服务器端口:8888"); udpSocket = new QUdpSocket(this); //绑定端口号 udpSocket->bind(8888); //udpSocket->bind(QHostAddress::AnyIPv4,8888); //必须是主机的ipv4类通信方式,以及本机的ip地址 /*组播方式 //加入某个组播,并且组播是D类地址 //udpSocket->joinMulticastGroup(QHostAddress("192,168,1,144")); //离开某个组播方式 //udpScoket->leaveMulticastGroup(); */ //当对方发送数据过来。自动触发readyRead() connect(udpSocket,&QUdpSocket::readyRead,this,&Widget::dealMsg); ui->ButtonSend->setFocus(); ui->ButtonSend->setDefault(true); ui->textEditShow->installEventFilter(this);//设置完后自动调用其eventFilter函数 } Widget::~Widget() { delete ui; } void Widget::dealMsg() { //读取对方发送的内容 char buf[1024] = {0}; //内容 QHostAddress cliAddr; //对方地址 quint16 port; //对方端口 qint64 len = udpSocket->readDatagram(buf,sizeof(buf),&cliAddr,&port); QTime cur_time = QTime::currentTime(); QString time_info = cur_time.toString("hh:mm:ss"); if(len >0) { //获取到文本格式化 [192.168.1.1 : 8888]aaaa QString str = QString("[%1:%2] %3 [%4]") .arg(cliAddr.toString()) .arg(port) .arg(buf) .arg(time_info); //ui->textEditShow->setText(str); ui->textEditShow->append(str); } } bool Widget::eventFilter(QObject *target, QEvent *event) { if(target == ui->textEditShow) { if(event->type() == QEvent::KeyPress)//回车键 { QKeyEvent *k = static_cast<QKeyEvent *>(event); if(k->key() == Qt::Key_Return) { on_ButtonSend_clicked(); return true; } } } return QWidget::eventFilter(target,event); } void Widget::on_ButtonSend_clicked() { //获取对方的ip和端口 QString ip = ui->lineEditIp->text(); qint16 port = ui->lineEditPort->text().toInt(); //获取编辑区内容 QString str = ui->textEditShow->toPlainText(); //给指定的ip发送数据 udpSocket->writeDatagram(str.toUtf8(),QHostAddress(ip),port); ui->textEditShow->clear(); } void Widget::on_ButtonClose_clicked() { udpSocket->disconnectFromHost(); udpSocket->close(); qDebug() << "主服务器连接断开！"; this->close(); }