java如何获取IP地址

import java.net.Inet6Address;

import java.net.InetAddress;

import java.net.NetworkInterface;

import java.net.SocketException;

import java.util.Enumeration;

 

public class GetMacIp {

 

       /**  

       * @Title: main 

       * @Description: TODO

       * @param :@param args     

       * @return :void    

       * @throws 

       */

       public static void main(String[] args) {

            

                    String currentIP= null;

                    Enumeration<?> e1;

                    try {

                        e1 = (Enumeration<?>) NetworkInterface.getNetworkInterfaces();

                        while (e1.hasMoreElements()) {

                            NetworkInterface ni = (NetworkInterface) e1.nextElement();

                            if (!ni.getName().equals("eth3" )) {

                                continue;

                            } else {

                                Enumeration<?> e2 = ni.getInetAddresses();

                                while (e2.hasMoreElements()) {

                                    InetAddress ia = (InetAddress) e2.nextElement();

                                    if (ia instanceof Inet6Address) {

                                        continue;

                                    }

                                   currentIP = ia.getHostAddress();

                                   

                                }

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

                                break;

                            }

                        }

                    } catch (SocketException e) {

                        e.getMessage();

                    }

 

                }

 

      }