QT获取本机网络信息

widget.h

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>QT_BEGIN_NAMESPACE
namespace Ui {
class Widget;
}
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();void getinformation();private slots:void on_pushButton_info_clicked();private:Ui::Widget *ui;
};
#endif // WIDGET_H

widget.cpp

#include "widget.h"
#include "ui_widget.h"
#include<QHostInfo>
#include<QNetworkInterface>
#include<QMessageBox>
Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);getinformation();
}Widget::~Widget()
{delete ui;
}void Widget::on_pushButton_info_clicked()
{QString detail = "";QList<QNetworkInterface> list = QNetworkInterface::allInterfaces();for(int i=0;i<list.count();++i){QNetworkInterface interface = list.at(i);detail+=tr("设备:")+interface.name()+"\n";detail+=tr("硬件地址:")+interface.hardwareAddress()+"\n";QList<QNetworkAddressEntry> entryList = interface.addressEntries();for(int j=1;j<entryList.count();++j){QNetworkAddressEntry entry =  entryList.at(j);detail+=tr("\t")+tr("IP 地址:")+entry.ip().toString()+"\n";detail+=tr("\t")+tr("子网掩码")+entry.netmask().toString()+"\n";detail+=tr("\t")+tr("广播地址")+entry.broadcast().toString()+"\n";}}QMessageBox::information(this , tr("Detail") , detail);}void Widget::getinformation()
{QString localHostName = QHostInfo::localHostName();ui->lineEdit_name->setText(localHostName);QHostInfo hostInfo = QHostInfo::fromName(localHostName);QList<QHostAddress> listAdress = hostInfo.addresses();if(!listAdress.empty()){ui->lineEdit_ip->setText(listAdress.at(1).toString());}}