java 取得服务器地址 java怎么获取服务器ip

package com.netsdar.message.utils; 



 import java.net.InetAddress; 

 import java.net.NetworkInterface; 

 import java.net.SocketException; 

 import java.net.UnknownHostException; 

 import java.util.Enumeration; 





 public class utilIp { 

/** 

      * 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; 

    } 

   public static void main(String[] args) { 

    
      try { 

    
              InetAddress address = InetAddress.getLocalHost();//获取的是本地的IP地址 

    
              System.out.println(address);//PC-20140317PXKX/192.168.0.121 

    
              System.out.println(address.getHostAddress());//192.168.0.121 

    
              System.out.println("==============="); 

    
              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地址 

    
              System.out.println(address1);//www.wodexiangce.cn/124.237.121.122 

    
              System.out.println(address1.getHostAddress());//124.237.121.122 

    
             System.out.println("==============="); 

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

    
             for(InetAddress addr:addresses){ 

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

    
                                         //www.baidu.com/14.215.177.37 

    
             } 

    
         } catch (UnknownHostException e) { 

    
             e.printStackTrace(); 

    
         } 

    
 } 

 }