怎样用JAVA程序获取本机ip

import javanetInetAddress;

import javanetUnknownHostException;

public class Test

{

public static void main(String[] args) throws UnknownHostException

{

InetAddress inet = InetAddressgetLocalHost();

Systemoutprintln("本机的ip=" + inetgetHostAddress());

}

}

第一种：获取本机的IP

Enumeration<NetworkInterface>

netInterfaces

=

null;

try

{

netInterfaces

=

NetworkInterfacegetNetworkInterfaces();

while

(netInterfaceshasMoreElements())

{

NetworkInterface

ni

=

netInterfacesnextElement();

Systemoutprintln("DisplayName:"

+

nigetDisplayName());

Systemoutprintln("Name:"

+

nigetName());

Enumeration<InetAddress>

ips

=

nigetInetAddresses();

while

(ipshasMoreElements())

{

Systemoutprintln("IP:"

+

ipsnextElement()getHostAddress());

ipTemp=

nigetInetAddresses()nextElement()getHostAddress();

if(ipTemp!="127001"

&&

!"127001"equals(ipTemp))

{

ip=ipTemp;

}

}

}

}catch(Exception

ee)

{

eeprintStackTrace();

}

第二种：也是本机的：

InetAddress

addr

=

InetAddressgetLocalHost();

ip=addrgetHostAddress()toString();//获得本机IP

java获取本机的外网ip示例：

import javaioIOException;

import javaioInputStream;

import javanet>

import javanetInet4Address;

import javanetInetAddress;

import javanetNetworkInterface;

import javanetSocketException;

import javautilArrayList;

import javautilEnumeration;

import javautilList;

/

@author Becolette

@description TODO

@date 2015-11-5 下午01:58:46

/

public class IpAddress {

public static String find() {

List<String> ips = new ArrayList<String>();

// 返回所有网络接口的一个枚举实例

Enumeration<> allNetInterfaces = null;

try {

allNetInterfaces = NetworkInterfacegetNetworkInterfaces();

} catch (SocketException e) {

eprintStackTrace();

}

InetAddress ip = null;

while (allNetInterfaceshasMoreElements()) {

NetworkInterface netInterface = (NetworkInterface) allNetInterfacesnextElement();

Enumeration<InetAddress> addresses = netInterfacegetInetAddresses();

while (addresseshasMoreElements()) {

// 获得当前网络接口

ip = (InetAddress) addressesnextElement();

if (ip != null && ip instanceof Inet4Address && ipgetHostAddress()indexOf("") != -1) {

ipsadd(ipgetHostAddress());

}

}

}

if (ipssize() == 1) {

return ipsget(0);

} else {

for (String ipa : ips) {

if (!"127001"equals(ipa)) {

return ipa;

}

}

}

return MacAddressfind();

}

}

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