Qt-网络与通信-获取本机网络信息

在网络应用中，经常需要获取本机主机名和IP地址和硬件地址等信息。运用QHostInfo、QNetworkInterface、QNetworkAddressEntry可以获得本机的网络信息。

上运行截图

这里需要注意的，在Qt5.80 VS的版本中，有的字符“：”中文版本的，会导致编译错误。

第一步，需要再pro文件中加入 QT+= network

.h文件

  

   

    

     

    
    

     

      #ifndef WIDGET_H
     
    
   

    

     

    
    

     

      #define WIDGET_H
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      #include <QWidget>
     
    
   

    

     

    
    

     

      #include <QLabel>
     
    
   

    

     

    
    

     

      #include <QPushButton>
     
    
   

    

     

    
    

     

      #include <QLineEdit>
     
    
   

    

     

    
    

     

      #include <QGridLayout>
     
    
   

    

     

    
    

     

      #include <QMessageBox>
     
    
   

    

     

    
    

     

      #include <QHostInfo>
     
    
   

    

     

    
    

     

      #include <QNetworkInterface>
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      class Widget : public QWidget
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     

          Q_OBJECT
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      public:
     
    
   

    

     

    
    

     
    Widget(QWidget *parent = 0);
     
    
   

    

     

    
    

     

          ~Widget();
     
    
   

    

     

    
    

     
    void getHostInformation();
     
    
   

    

     

    
    

     

      public slots:
     
    
   

    

     

    
    

     
    void slotDetail();
     
    
   

    

     

    
    

     

      private:
     
    
   

    

     

    
    

     

          QLabel *hostLabel;
     
    
   

    

     

    
    

     

          QLineEdit *LineEditLocalHostName;
     
    
   

    

     

    
    

     

          QLabel *ipLabel;
     
    
   

    

     

    
    

     

          QLineEdit *LineEditAddress;
     
    
   

    

     

    
    

     

          QPushButton *detailBtn;
     
    
   

    

     

    
    

     

          QGridLayout *mainLayout;
     
    
   

    

     

    
    

     

      };
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      #endif // WIDGET_H
     
    
  
 

.cpp文件

  

   

    

     

    
    

     

      #include "widget.h"
     
    
   

    

     

    
    

     

      #include <QDebug>
     
    
   

    

     

    
    

     

      Widget::Widget(QWidget *parent)
     
    
   

    

     

    
    

     

          : QWidget(parent)
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     

          hostLabel = new QLabel(tr("主机名："));
     
    
   

    

     

    
    

     

          LineEditLocalHostName = new QLineEdit;
     
    
   

    

     

    
    

     

          ipLabel = new QLabel(tr("IP 地址:"));
     
    
   

    

     

    
    

     

          LineEditAddress = new QLineEdit;
     
    
   

    

     

    
    

     

          detailBtn = new QPushButton(tr("详细"));
     
    
   

    

     

    
    

     

          mainLayout = new QGridLayout(this);
     
    
   

    

     

    
    

     

          mainLayout->addWidget(hostLabel,0,0);
     
    
   

    

     

    
    

     

          mainLayout->addWidget(LineEditLocalHostName,0,1);
     
    
   

    

     

    
    

     

          mainLayout->addWidget(ipLabel,1,0);
     
    
   

    

     

    
    

     

          mainLayout->addWidget(LineEditAddress,1,1);
     
    
   

    

     

    
    

     

          mainLayout->addWidget(detailBtn,2,0,1,2);
     
    
   

    

     

    
    

     
    getHostInformation();
     
    
   

    

     

    
    

     
    connect(detailBtn,SIGNAL(clicked()),this,SLOT(slotDetail()));
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      Widget::~Widget()
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      void Widget::getHostInformation()
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     

          QString localHostName = QHostInfo::localHostName();			
     
    
   

    

     

    
    

     

          LineEditLocalHostName->setText(localHostName);
     
    
   

    

     

    
    

     

          QHostInfo hostInfo = QHostInfo::fromName(localHostName);	
     
    
   

    

     

    
    

     
  
     
    
   

    

     

    
    

     

          QList<QHostAddress> listAddress = hostInfo.addresses();
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    qDebug()<<listAddress;
     
    
   

    

     

    
    

     
    if(!listAddress.isEmpty())									
     
    
   

    

     

    
    

     

          {
     
    
   

    

     

    
    

     

              LineEditAddress->setText(listAddress.at(4).toString());
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      void Widget::slotDetail()
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     

          QString detail="";
     
    
   

    

     

    
    

     

          QList<QNetworkInterface> list=QNetworkInterface::allInterfaces();
     
    
   

    

     

    
    

     
    //(a)
     
    
   

    

     

    
    

     
    for(int i=0;i<list.count();i++)
     
    
   

    

     

    
    

     

          {
     
    
   

    

     

    
    

     

              QNetworkInterface interface=list.at(i);
     
    
   

    

     

    
    

     

              detail=detail+tr("设备:")+interface.name()+"\n";
     
    
   

    

     

    
    

     
        //(b)
     
    
   

    

     

    
    

     

              detail=detail+tr("硬件地址:")+interface.hardwareAddress()+"\n";
     
    
   

    

     

    
    

     
        //(c)
     
    
   

    

     

    
    

     

              QList<QNetworkAddressEntry> entryList=interface.addressEntries();
     
    
   

    

     

    
    

     
        //(d)
     
    
   

    

     

    
    

     
        for(int j=1;j<entryList.count();j++)
     
    
   

    

     

    
    

     

              {
     
    
   

    

     

    
    

     

                  QNetworkAddressEntry entry=entryList.at(j);
     
    
   

    

     

    
    

     

                  detail=detail+"\t"+tr("IP 地址:")+entry.ip().toString()+"\n";
     
    
   

    

     

    
    

     

                  detail=detail+"\t"+tr("子网掩码:")+entry.netmask().toString() +"\n";
     
    
   

    

     

    
    

     

                  detail=detail+"\t"+tr("广播地址:")+entry.broadcast().toString() +"\n";
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     

          QMessageBox::information(this,tr("Detail"),detail);
     
    
   

    

     

    
    

     

      }
     
    
  
 

工程地址：https://gitee.com/DreamLife-Technology_DreamLife/NetworkInformation

文章来源: dreamlife.blog.csdn.net，作者：DreamLife.，版权归原作者所有，如需转载，请联系作者。

原文链接：dreamlife.blog.csdn.net/article/details/79405220