UDP单播 、组播、广播，使用Qt实现，工程文件包，下载解压缩直接导入工程即可

#include "widget.h" #include "ui_widget.h" Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); } Widget::~Widget() { delete ui; } void Widget::mylayout() { m_sender = new QUdpSocket(this); m_receiver =new QUdpSocket(this); g_sender = new QUdpSocket(this); g_receiver = new QUdpSocket(this); connect(g_receiver,&QUdpSocket::readyRead,this,&Widget::processData); //广播 connect(m_receiver,&QUdpSocket::readyRead,this,&Widget::receiveData); //单播 udpSocket = new QUdpSocket(this); connect(udpSocket ,&QUdpSocket::readyRead,this,&Widget::reayRead_on); //组播 box = new QComboBox; m_box = new QComboBox; g_box = new QComboBox; x_bel_1 = new QLabel("单播工具"); x_bel_2 = new QLabel("组播工具"); x_bel_3 = new QLabel("广播工具"); edit_1 = new QLineEdit; //输入 端口 ip 数据 edit_2 = new QLineEdit; //ip edit_3 = new QLineEdit; //数据 edit_4 = new QLineEdit; //本地端口 edit_5 = new QLineEdit; //16进制接收字节 m_edit_1 = new QLineEdit; //输入 端口 m_edit_2 = new QLineEdit; //输入 端口 ip m_edit_3 = new QLineEdit; //输入 本地端口 m_edit_4 = new QLineEdit; //输入 端口 数据 m_edit_5 = new QLineEdit; //输入 端口 数据 g_edit_1 = new QLineEdit; //输入 端口 g_edit_2 = new QLineEdit; //输入 端口 ip g_edit_3 = new QLineEdit; //输入 本地端口 g_edit_4 = new QLineEdit; //输入 端口 数据 g_edit_5 = new QLineEdit; //输入 端口 数据 bel_1 = new QLabel("设置目标端口："); bel_2 = new QLabel("设置目标地址："); bel_3 = new QLabel("设置本地端口："); bel_4 = new QLabel("数据传输："); bel_5 = new QLabel("设置字符格式："); bel_6 = new QLabel("设置接收字节："); m_bel_1 = new QLabel("设置目标端口："); m_bel_2 = new QLabel("设置目标地址："); m_bel_3 = new QLabel("设置本地端口："); m_bel_4 = new QLabel("数据传输："); m_bel_5 = new QLabel("设置字符格式"); m_bel_6 = new QLabel("设置接收字节："); g_bel_1 = new QLabel("设置目标端口："); g_bel_2 = new QLabel("设置目标地址："); g_bel_3 = new QLabel("设置本地端口："); g_bel_4 = new QLabel("数据传输："); g_bel_5 = new QLabel("设置字符格式"); g_bel_6 = new QLabel("设置接收字节："); button_1 = new QPushButton("设置信息"); button_2 = new QPushButton("绑定本地端口"); button_3 = new QPushButton("单播发送"); button_4 = new QPushButton("解除绑定本地端口"); button_5 = new QPushButton("清除接收的数据"); m_button_1 = new QPushButton("设置信息"); m_button_2 = new QPushButton("绑定本地端口"); m_button_3 = new QPushButton("组播发送"); m_button_4 = new QPushButton("解除绑定本地端口"); m_button_5 = new QPushButton("清除接收的数据"); g_button_1 = new QPushButton("设置信息"); g_button_2 = new QPushButton("绑定本地端口"); g_button_3 = new QPushButton("广播发送"); g_button_4 = new QPushButton("解除绑定本地端口"); g_button_5 = new QPushButton("清除接收的数据"); Text_1 = new QTextEdit; m_Text_1 = new QTextEdit; g_Text_1 = new QTextEdit; button_1->setMinimumHeight(50); button_2->setMinimumHeight(50); button_3->setMinimumHeight(50); button_4->setMinimumHeight(50); button_5->setMinimumHeight(50); Text_1->setMinimumHeight(100); m_Text_1->setMinimumHeight(100); g_Text_1->setMinimumHeight(100); m_button_1->setMinimumHeight(50); m_button_2->setMinimumHeight(50); m_button_3->setMinimumHeight(50); m_button_4->setMinimumHeight(50); m_button_5->setMinimumHeight(50); g_button_1->setMinimumHeight(50); g_button_2->setMinimumHeight(50); g_button_3->setMinimumHeight(50); g_button_4->setMinimumHeight(50); g_button_5->setMinimumHeight(50); layout = new QGridLayout(this); QFont font("Microsoft YaHei", 14, 75); //font.setPointSize(14); x_bel_1->setFont(font); x_bel_2->setFont(font); x_bel_3->setFont(font); layout->addWidget(x_bel_1,0,0); layout->addWidget(x_bel_2,0,5); layout->addWidget(x_bel_3,0,10); layout->addWidget(bel_1,1,0); layout->addWidget(bel_2,2,0); layout->addWidget(bel_3,3,0); layout->addWidget(bel_4,4,0); layout->addWidget(bel_5,8,0); layout->addWidget(bel_6,8,2); layout->addWidget(edit_1,1,1,1,3); layout->addWidget(edit_2,2,1,1,3); layout->addWidget(edit_3,3,1,1,3); layout->addWidget(edit_4,4,1,1,3); layout->addWidget(edit_5,8,3); layout->addWidget(button_1,5,0); layout->addWidget(button_2,5,1); layout->addWidget(button_3,5,2); layout->addWidget(button_4,5,3); layout->addWidget(button_5,6,0,1,4);//(x,y,长，宽) layout->addWidget(Text_1,7,0,1,4); connect(button_1,SIGNAL(clicked(bool)),this,SLOT(button_1_clicked())); connect(button_2,SIGNAL(clicked(bool)),this,SLOT(button_2_clicked())); connect(button_3,SIGNAL(clicked(bool)),this,SLOT(button_3_clicked())); connect(button_4,SIGNAL(clicked(bool)),this,SLOT(button_4_clicked())); connect(button_5,SIGNAL(clicked(bool)),this,SLOT(button_5_clicked())); connect(m_button_1,SIGNAL(clicked(bool)),this,SLOT(on_pushButton_1clicked())); connect(m_button_2,SIGNAL(clicked(bool)),this,SLOT(on_pushButton_2clicked())); connect(m_button_3,SIGNAL(clicked(bool)),this,SLOT(on_pushButton_3clicked())); connect(m_button_4,SIGNAL(clicked(bool)),this,SLOT(on_pushButton_4clicked())); connect(m_button_5,SIGNAL(clicked(bool)),this,SLOT(on_pushButton_5clicked())); connect(g_button_1,SIGNAL(clicked(bool)),this,SLOT(g_button_1_clicked())); connect(g_button_2,SIGNAL(clicked(bool)),this,SLOT(g_button_2_clicked())); connect(g_button_3,SIGNAL(clicked(bool)),this,SLOT(g_button_3_clicked())); connect(g_button_4,SIGNAL(clicked(bool)),this,SLOT(g_button_4_clicked())); connect(g_button_5,SIGNAL(clicked(bool)),this,SLOT(g_button_5_clicked())); //画竖线 QFrame *line = new QFrame(); QFrame *line_1 = new QFrame(); line->setFrameShape(QFrame::VLine); //HLine 是横线 VLine 是竖线 line->setFrameShadow(QFrame::Plain); line_1->setFrameShape(QFrame::VLine); //HLine 是横线 VLine 是竖线 line_1->setFrameShadow(QFrame::Plain); //line->raise();//顶层展示 layout->addWidget(line,0,4,8,4); layout->addWidget(line_1,0,9,8,4); //画组播 layout->addWidget(m_edit_1,1,6,1,3); layout->addWidget(m_edit_2,2,6,1,3); layout->addWidget(m_edit_3,3,6,1,3); layout->addWidget(m_edit_4,4,6,1,3); layout->addWidget(m_edit_5,8,8); layout->addWidget(m_bel_1,1,5); layout->addWidget(m_bel_2,2,5); layout->addWidget(m_bel_3,3,5); layout->addWidget(m_bel_4,4,5); layout->addWidget(m_bel_5,8,5); layout->addWidget(m_bel_6,8,7); layout->addWidget(m_button_1,5,5); layout->addWidget(m_button_2,5,6); layout->addWidget(m_button_3,5,7); layout->addWidget(m_button_4,5,8); layout->addWidget(m_button_5,6,5,1,4); layout->addWidget(m_Text_1,7,5,1,4); box->addItem("toUtf8"); box->addItem("16"); m_box->addItem("toUtf8"); m_box->addItem("16"); g_box->addItem("toUtf8"); g_box->addItem("16"); layout->addWidget(g_box,8,11); layout->addWidget(m_box,8,6); layout->addWidget(box,8,1); layout->addWidget(g_edit_1,1,11,1,3); layout->addWidget(g_edit_2,2,11,1,3); lay