获取本机的真实IP地址

Code：

import java.net.InetAddress; import java.net.UnknownHostException; /** * 获取本机的真实IP地址。<br> * 注意：在Linux下，必须修改主机名（不能使用默认的localhost作为主机名，否则获取到的是127.0.0.1），然后在/etc/hosts下将新主机名绑定为本机IP，方可获得。<br> * 以下两个方法都可以。 * * @author nathan.yuhm */ public class Cluster { private static String getHostIp() { String localhost = ""; try { InetAddress localHost2 = InetAddress.getLocalHost(); System.out.println("InetAddress.getLocalHost()=" + localHost2); localhost = localHost2.getHostAddress(); } catch (Exception e) { e.printStackTrace(); } return localhost; } private static String getHostIp2() { try { String hostName = InetAddress.getLocalHost().getHostName(); System.out.println("InetAddress.getLocalHost().getHostName()=" + hostName); InetAddress byName = InetAddress.getByName(hostName); System.out.println("InetAddress.getByName(hostName)=" + byName); return byName.getHostAddress(); } catch (UnknownHostException e) { e.printStackTrace(); } return null; } public static void main(String[] args) { System.out.println(getHostIp()); System.out.println(getHostIp2()); } }

output：

InetAddress.getLocalHost()=hy-yhm/10.249.196.28 10.249.196.28 InetAddress.getLocalHost().getHostName()=hy-yhm InetAddress.getByName(hostName)=hy-yhm/10.249.196.28 10.249.196.28

reference：

http://www.cnblogs.com/lidp/archive/2010/02/03/1696471.html

http://blog.sina.com.cn/s/blog_5a08b1780100ceqc.html