获取请求主机IP 

 1 package com.sunll.common.util;
 2 
 3 import javax.servlet.http.HttpServletRequest;
 4 import java.io.IOException;
 5 
 6     /**
 7      * 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址;
 8      *
 9      */
10 public class NetworkUtil {
11 
12     public final static String getIpAddress(HttpServletRequest request) {
13         // 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址
14         String ip = request.getHeader("X-Forwarded-For");
15         if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
16             if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
17                 ip = request.getHeader("Proxy-Client-IP");
18             }
19             if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
20                 ip = request.getHeader("WL-Proxy-Client-IP");
21             }
22             if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
23                 ip = request.getHeader("HTTP_CLIENT_IP");
24             }
25             if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
26                 ip = request.getHeader("HTTP_X_FORWARDED_FOR");
27             }
28             if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
29                 ip = request.getRemoteAddr();
30             }
31 
32             //对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
33         } else if (ip.length() > 15) {//"***.***.***.***".length() = 15
34             String[] ips = ip.split(",");
35             for (int index = 0; index < ips.length; index++) {
36                 String strIp = ips[index];
37                 if (!("unknown".equalsIgnoreCase(strIp))) {
38                     ip = strIp;
39                     break;
40                 }
41             }
42         }
43         return ip;
44     }
45 }

 

posted @ 2018-05-10 16:53  bo客先生  阅读(387)  评论(0)  编辑  收藏  举报