java获取本机全部的IP地址

import java.net.*;
import java.util.*;

public class Main {
	public static void main(String[] args) {
		List<String> ipaddresses = getIpAddresses();
	}

	private static List<String> getIpAddresses() {
		try {
			List<String> ipList = new ArrayList<String>();
			Enumeration<NetworkInterface>  allNetInterfaces = NetworkInterface.getNetworkInterfaces();
			InetAddress ip = null;
			while (allNetInterfaces.hasMoreElements()) {
				NetworkInterface netInterface = allNetInterfaces.nextElement();
				Enumeration<InetAddress> addresses = netInterface
						.getInetAddresses();
				while (addresses.hasMoreElements()) {
					ip = addresses.nextElement();
					if (ip != null && ip instanceof Inet4Address) {
						ipList.add(ip.getHostAddress());
						System.out.println("本机的IP = " + ip.getHostAddress());
					}
				}
			}
			return ipList;
		} catch (SocketException e) {
			e.printStackTrace();
			return null;
		}
	}
}