package com.nms.server.util;

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.Enumeration;

public class LocalAddress {

	public static String getRealIp()  throws SocketException{
		String localip = null;// 本地IP，如果没有配置外网IP则返回它
		String netip = null;// 外网IP
		Enumeration<NetworkInterface> netInterfaces = NetworkInterface
				.getNetworkInterfaces();
		InetAddress ip = null;
		boolean finded = false;// 是否找到外网IP
		while (netInterfaces.hasMoreElements() && !finded) {
			NetworkInterface ni = netInterfaces.nextElement();
			Enumeration<InetAddress> address = ni.getInetAddresses();
			while (address.hasMoreElements()) {
				ip = address.nextElement();
				try {
					localip = ip.getLocalHost().getHostAddress();
				} catch (UnknownHostException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
//				System.out.println(ip);
//				if (!ip.isSiteLocalAddress() && !ip.isLoopbackAddress()
//						&& ip.getHostAddress().indexOf(":") == -1) {
//					netip = ip.getHostAddress();
//					finded = true;
////					break;
//				} else if (ip.isSiteLocalAddress()
//						&& !ip.isLoopbackAddress()
//						&& ip.getHostAddress().indexOf(":") == -1) {
//					localip = ip.getHostAddress();
//				}
				break;
			}
		}
		System.out.println("IP们  "+netip+"   <--->   "+localip);
		if (netip != null && !"".equals(netip)) {
			return netip;
		} else {
			return localip;
		}
	}
	
	public static void main(String [] args) {
		try {
			LocalAddress.getRealIp();
		} catch (SocketException e) {
			e.printStackTrace();
		}
	}
}
