获取本机IP的方法

 

隐藏行号 复制代码 ？ 源代码

1. public static String[] getAllLocalIP() {
   

2.     String[] localServers = null;
   

3.     try {
   

4.         InetAddress addr = InetAddress.getLocalHost();
   

5.         String hostName = addr.getHostName().toString();
   

6.         // 获取本机ip
   

7.         InetAddress[] ipsAddr = InetAddress.getAllByName(hostName);
   

8.         localServers = new String[ipsAddr.length];
   

9.         for (int i = 0; i < ipsAddr.length; i++) {
   

10.             if (ipsAddr[i] != null) {
    

11.                 localServers[i] = ipsAddr[i].getHostAddress().toString();
    

12.             }
    

13.         }
    

14.     } catch (Exception e) {
    

15.     }
    

16.     return localServers;
    

17. }
    

 

这种方法在Windows下是没问题的，但是在Linux下运行的时候很有可能会是127.0.0.1，修改host虽然可以解决，但并不是个明智之举。下面这种方法在Windows和Linux下都可以获得正确的IP：

隐藏行号 复制代码 ？ 源代码

1. /**
   

2.  * 取得本机IP（可能有多个网卡，Linux和Windows都适用）
   

3.  * 
   

4.  * @return List
   

5.  */
   

6. public static List getAllLocalIP() {
   

7.     List localServers = new ArrayList();
   

8.     try {
   

9.         Enumeration netInterfaces = NetworkInterface
   

10.                 .getNetworkInterfaces();
    

11.         InetAddress ip = null;
    

12.         while (netInterfaces.hasMoreElements()) {
    

13.             NetworkInterface ni = netInterfaces.nextElement();
    

14.             Enumeration address = ni.getInetAddresses();
    

15.             while (address.hasMoreElements()) {
    

16.                 ip = address.nextElement();
    

17.                 if (!ip.isLoopbackAddress()
    

18.                         && ip
    

19.                                 .getHostAddress()
    

20.                                 .matches(
    

21.                                         "((2[0-4]\\d|25[0-5]|[01]?\\d\\d?)\\.){3}(2[0-4]\\d|25[0-5]|[01]?\\d\\d?)")) {
    

22.                     // System.out.println("非回环ip:    " +
    

23.                     // ip.getHostAddress());
    

24.                     localServers.add(ip.getHostAddress());
    

25.                 }
    

26.             }
    

27.         }
    

28.     } catch (SocketException e) {
    

29.         e.printStackTrace();
    

30.     }
    

32.     return localServers;
    

33. }