經常使用命令行來查看一些計算機的配置信息。

1.首先按住鍵盤上的“開始鍵+R鍵”，然后在彈出的對話框中輸入“CMD”，回車

另外，還可以依次點擊 開始>所有程序>附件>命令提示符

2.接下來在彈出的命令提示符窗口中輸入“ipconfig /all”并按鍵盤上的回車，(注：ipconfig 命令為查看IP配置信息，參數“all”表示查看所有網卡的全部配置信息)

如下圖所示：

那么，在Qt中如何獲取主機名、IP、端口、MAC等信息？

主要使用到的類有：

QHostInfo

QHostAddress

QNetworkInterface

QNetworkAddressEntry

1.獲取登錄用戶

QString name = qgetenv("USERNAME");

qDebug() << "User Name:" << name;

輸出：

User Name: "wangl-d"

2.獲取主機名、IP地址

//QHostInfo類作用，獲取主機名，也可以通過主機名來查找IP地址，或者通過IP地址來反向查找主機名。

QString localHostName = QHostInfo::localHostName();

qDebug() << "LocalHostName:" << localHostName;

//獲取IP地址

QHostInfo info = QHostInfo::fromName(localHostName);

qDebug() << "IP Address:" << info.addresses();

foreach(QHostAddress address, info.addresses())

{

if (address.protocol() == QAbstractSocket::IPv4Protocol)

qDebug() << "IPv4 Address:" << address.toString();

}

foreach (QHostAddress address, QNetworkInterface::allAddresses())

{

qDebug() << "Address:" << address;

}

輸出：

LocalHostName: "wangl-d-pc"

IP Address: (QHostAddress("fe80::396e:183d:aac6:f7f2") , QHostAddress( "192.168.118.55" ) )

IPv4 Address: "192.168.118.55"

Address: QHostAddress( "fe80::396e:183d:aac6:f7f2" )

Address: QHostAddress( "192.168.118.55" )

Address: QHostAddress( "::1" )

Address: QHostAddress( "127.0.0.1" )

Address: QHostAddress( "fe80::5efe:c0a8:7637" )

Address: QHostAddress( "fe80::e0:0:0:0" )

3.獲取設備名、MAC地址、子網掩碼、廣播地址等

//獲取所有網絡接口的列表

foreach (QNetworkInterface netInterface, QNetworkInterface::allInterfaces())

{

//設備名

qDebug() << "Device:" << netInterface.name();

//MAC地址

qDebug() << "HardwareAddress:" << netInterface.hardwareAddress();

QList entryList = netInterface.addressEntries();

//遍歷每一個IP地址(每個包含一個IP地址，一個子網掩碼和一個廣播地址)

foreach(QNetworkAddressEntry entry, entryList)

{

//IP地址

qDebug() << "IP Address:" << entry.ip().toString();

//子網掩碼

qDebug() << "Netmask:" << entry.netmask().toString();

//廣播地址

qDebug() << "Broadcast:" << entry.broadcast().toString();

}

}

輸出：

Device: "{4C5C2613-C18F-416A-A21F-47B707C3B935}"

HardwareAddress: "74:D4:35:1B:A6:2F"

IP Address: "fe80::396e:183d:aac6:f7f2"

Netmask: "ffff:ffff:ffff:ffff::"

Broadcast: ""

IP Address: "192.168.118.55"

Netmask: "255.255.255.0"

Broadcast: "192.168.118.255"

Device: "{846EE342-7039-11DE-9D20-806E6F6E6963}"

HardwareAddress: ""

IP Address: "::1"

Netmask: "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"

Broadcast: ""

IP Address: "127.0.0.1"

Netmask: ""

Broadcast: ""

Device: "{539F3167-F67C-432D-8904-34129F3F5521}"

HardwareAddress: "00:00:00:00:00:00:00:E0"

IP Address: "fe80::5efe:c0a8:7637"

Netmask: "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"

Broadcast: ""

Device: "{5DECB4C5-20AC-4BD6-A685-9FE608ED6EF5}"

HardwareAddress: "00:00:00:00:00:00:00:E0"

IP Address: "fe80::e0:0:0:0"

Netmask: "ffff:ffff:ffff:ffff::"

Broadcast: ""

http://blog.sina.com.cn/s/blog_a6fb6cc90102v0mz.html

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