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package com.lone.common.util;

import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

public class IpUtil {
	/**
	 * 获取登录用户IP地址
	 * 
	 * @param request
	 * @return
	 */
	public static String getIpAddr(HttpServletRequest request) {
		String ip = request.getHeader("x-forwarded-for");
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("WL-Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getRemoteAddr();
		}
		if (ip.equals("0:0:0:0:0:0:0:1")) {
			ip = "本地";
		}
		return ip;
	}

	/**
	 * 获取本地IP列表（针对多网卡情况）
	 *
	 * @return
	 */
	public static List getLocalIPList() {
		List ipList = new ArrayList();
		try {
			Enumeration networkInterfaces = NetworkInterface.getNetworkInterfaces();
			NetworkInterface networkInterface;
			Enumeration inetAddresses;
			InetAddress inetAddress;
			String ip;
			while (networkInterfaces.hasMoreElements()) {
				networkInterface = networkInterfaces.nextElement();
				inetAddresses = networkInterface.getInetAddresses();
				while (inetAddresses.hasMoreElements()) {
					inetAddress = inetAddresses.nextElement();
					if (inetAddress != null && inetAddress instanceof Inet4Address) { // IPV4
						ip = inetAddress.getHostAddress();
						ipList.add(ip);
						// System.out.println("获取本机IP："+ip);
					}
				}
			}
		} catch (SocketException e) {
			e.printStackTrace();
		}
		return ipList;
	}
}