1 public static void main(String[] args) {

 2     　　try {

 3              InetAddress address = InetAddress.getLocalHost();//获取的是本地的IP地址 //PC-20140317PXKX/192.168.0.121

 4              String hostAddress = address.getHostAddress());//192.168.0.121

 5              InetAddress address1 = InetAddress.getByName("www.wodexiangce.cn");//获取的是该网站的ip地址，比如我们所有的请求都通过nginx的，所以这里获取到的其实是nginx服务器的IP地

 6              String hostAddress1 = address1.getHostAddress());//124.237.121.122

 7              InetAddress[] addresses = InetAddress.getAllByName("www.baidu.com");//根据主机名返回其可能的所有InetAddress对象

 8              for(InetAddress addr:addresses){

 9              System.out.println(addr);//www.baidu.com/14.215.177.38

10              //www.baidu.com/14.215.177.37

11            }

12         } catch (UnknownHostException e) {

13              e.printStackTrace();

14       }

15  }

/**
* 获取服务器IP地址
* @return
*/
@SuppressWarnings("unchecked")
public static String getServerIp(){
String SERVER_IP = null;
try {
Enumeration netInterfaces = NetworkInterface.getNetworkInterfaces();
InetAddress ip = null;
while (netInterfaces.hasMoreElements()) {
NetworkInterface ni = (NetworkInterface) netInterfaces.nextElement();
ip = (InetAddress) ni.getInetAddresses().nextElement();
SERVER_IP = ip.getHostAddress();
if (!ip.isSiteLocalAddress() && !ip.isLoopbackAddress()
&& ip.getHostAddress().indexOf(":") == -1) {
SERVER_IP = ip.getHostAddress();
break;
} else {
ip = null;
}
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

return SERVER_IP;
}
}