qt常用代碼段（獲取ip，MAC，username，hostname）

// 涉及到網絡模塊時記得在工程問題，加上：   QT += network

// 並且根據相應提示，添加相應的頭文件：#include <QtNetwork>

// 獲得ip地址
QString getIpAdress()
{
    QString localIPAddress = ”“;
     QList <QHostAddress>listAddress = QNetworkInterface::allAddresses();
     for(int j = 0; j < listAddress.size(); j++){
         if(!listAddress.at(j).isNull()
         && listAddress.at(j).protocol() ==  QAbstractSocket::IPv4Protocol
         && listAddress.at(j) != QHostAddress::LocalHost){
             localIPAddress = listAddress.at(j).toString();
             return localIPAddress;
         }
     }
     return localIPAddress;
}

// 獲得ip地址
QString getIpAdress()
{
    QString localIPAddress = "";
     QList <QHostAddress>listAddress = QNetworkInterface::allAddresses();
     for(int j = 0; j < listAddress.size(); j++){
         if(!listAddress.at(j).isNull()
         && listAddress.at(j).protocol() ==  QAbstractSocket::IPv4Protocol
         && listAddress.at(j) != QHostAddress::LocalHost){
             localIPAddress = listAddress.at(j).toString();
             return localIPAddress;
         }
     }
     return localIPAddress;
}

//獲得MAC地址
QStringUSBMainUI::getMACAdress()
{
    QList<QNetworkInterface> NetList;//網卡鏈表
    int NetCount = 0;//網卡個數
    int Neti=0;
    QNetworkInterface thisNet;//所要使用的網卡

    NetList = QNetworkInterface::allInterfaces();//獲取所有網卡信息
    NetCount = NetList.count();//統計網卡個數

    for(Neti = 0; Neti < NetCount; Neti++){//遍歷所有網卡
        if( NetList[Neti].isValid() ){//判斷該網卡是否是合法
            thisNet = NetList[Neti];//將該網卡置爲當前網卡
            break;
        }
    }
    return(thisNet.hardwareAddress());//獲取該網卡的MAC
}

//獲得MAC地址
QStringUSBMainUI::getMACAdress()
{
    QList<QNetworkInterface> NetList;//網卡鏈表
    int NetCount = 0;//網卡個數
    int Neti=0;
    QNetworkInterface thisNet;//所要使用的網卡

    NetList = QNetworkInterface::allInterfaces();//獲取所有網卡信息
    NetCount = NetList.count();//統計網卡個數

    for(Neti = 0; Neti < NetCount; Neti++){//遍歷所有網卡
        if( NetList[Neti].isValid() ){//判斷該網卡是否是合法
            thisNet = NetList[Neti];//將該網卡置爲當前網卡
            break;
        }
    }
    return(thisNet.hardwareAddress());//獲取該網卡的MAC
}

// 獲得用戶名
QString getUserName()
{
    QString userName = QDesktopServices::storageLocation(QDesktopServices::HomeLocation);
    userName = userName.section(“/”, -1, -1);
    return userName;
}

// 獲得用戶名 

QString getUserName() 

{ 

    QString userName = QDesktopServices::storageLocation(QDesktopServices::HomeLocation); 

    userName = userName.section("/", -1, -1); 

    return userName; 

}

// 獲得機器名字
QString getMachineName()
{
    QString localHostName = QHostInfo::localHostName();
    return localHostName;
}

// 獲得機器名字 

QString getMachineName() 

{ 

    QString localHostName = QHostInfo::localHostName(); 

    return localHostName; 

}

//轉 秋葉原 && Mike || 麥克