java如何获取本机IP
1 import java.net.*;
2
3 public class Test6 {
4
5 public static void main(String[] args) {
6 // TODO Auto-generated method stub
7 InetAddress ia=null;
8 try {
9 ia=ia.getLocalHost();
10
11 String localname=ia.getHostName();
12 String localip=ia.getHostAddress();
13 System.out.println("本机名称是："+ localname);
14 System.out.println("本机的ip是 ："+localip);
15 } catch (Exception e) {
16 // TODO Auto-generated catch block
17 e.printStackTrace();
18 }
19 }
20
21 }
获取所有IPv4的IP地址：
1 public static List<String> getLocalIPList() {
2 List<String> ipList = new ArrayList<String>();
3 try {
4 Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
5 NetworkInterface networkInterface;
6 Enumeration<InetAddress> inetAddresses;
7 InetAddress inetAddress;
8 String ip;
9 while (networkInterfaces.hasMoreElements()) {
10 networkInterface = networkInterfaces.nextElement();
11 inetAddresses = networkInterface.getInetAddresses();
12 while (inetAddresses.hasMoreElements()) {
13 inetAddress = inetAddresses.nextElement();
14 if (inetAddress != null && inetAddress instanceof Inet4Address) { // IPV4
15 ip = inetAddress.getHostAddress();
16 ipList.add(ip);
17 }
18 }
19 }
20 } catch (SocketException e) {
21 e.printStackTrace();
22 }
23 return ipList;
24 }
