Qt获取本机的IP地址、用户名等相关信息

1.pro文件加入

QT       += network

2.添加头文件

#include <QHostAddress>#include <QHostInfo>#include <QNetworkInterface>#include <QProcess>

    //获取主机名    QString localHost = QHostInfo::localHostName();

//获取用户名
QString getUserName()
{
#if 1
    QStringList envVariables;
    envVariables << "USERNAME.*" << "USER.*" << "USERDOMAIN.*"
                 << "HOSTNAME.*" << "DOMAINNAME.*";
    QStringList environment = QProcess::systemEnvironment();
    foreach (QString string, envVariables) {
        int index = environment.indexOf(QRegExp(string));
        if (index != -1) {
            QStringList stringList = environment.at(index).split('=');
            if (stringList.size() == 2) {
                return stringList.at(1);
                break;
            }
        }
    }
    return "unknown";
#else
    QString userName = QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
    userName = userName.section("/", -1, -1);
    return userName;
#endif
}

//获取本机IPQString getIP(QString localHost){    QString ipAddr;#if 0    QList<QHostAddress> AddressList = QNetworkInterface::allAddresses();    foreach(QHostAddress address, AddressList){        if(address.protocol() == QAbstractSocket::IPv4Protocol &&                address != QHostAddress::Null &&                address != QHostAddress::LocalHost){            if (address.toString().contains("127.0.")){                continue;            }            ipAddr = address.toString();            break;        }    }#else    QHostInfo info = QHostInfo::fromName(localHost);    info.addresses();//QHostInfo的address函数获取本机ip地址    //如果存在多条ip地址ipv4和ipv6：    foreach(QHostAddress address,info.addresses())    {        if(address.protocol()==QAbstractSocket::IPv4Protocol){//只取ipv4协议的地址            qDebug()<<address.toString();            ipAddr = address.toString();        }    }#endif    return ipAddr;}

//获取计算机详细信息void slotDetail()  {      QString detail="";      QList<QNetworkInterface> list=QNetworkInterface::allInterfaces();      for(int i=0;i<list.count();i++)      {          QNetworkInterface interface=list.at(i);          detail=detail+tr("设备：")+interface.name()+"\n";          detail=detail+tr("硬件地址：")+interface.hardwareAddress()+"\n";          QList<QNetworkAddressEntry> entryList=interface.addressEntries();          for(int j=0;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);  }

参考文档：

Qt之获取本机网络信息