java使用HttpServletRequest获取请求真实ip地址 

 1 public static String getIpAddr(HttpServletRequest request) {
 2         String ipAddress = request.getHeader("x-forwarded-for");
 3         if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
 4             ipAddress = request.getHeader("Proxy-Client-IP");
 5         }
 6         if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
 7             ipAddress = request.getHeader("WL-Proxy-Client-IP");
 8         }
 9         if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
10             ipAddress = request.getRemoteAddr();
11             String localIp = "127.0.0.1";
12             String localIpv6 = "0:0:0:0:0:0:0:1";
13             if (ipAddress.equals(localIp) || ipAddress.equals(localIpv6)) {
14                 // 根据网卡取本机配置的IP
15                 InetAddress inet = null;
16                 try {
17                     inet = InetAddress.getLocalHost();
18                     ipAddress = inet.getHostAddress();
19                 } catch (UnknownHostException e) {
20                     e.printStackTrace();
21                 }
22             }
23         }
24         // 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
25         String ipSeparate = ",";
26         int ipLength = 15;
27         if (ipAddress != null && ipAddress.length() > ipLength) {
28             if (ipAddress.indexOf(ipSeparate) > 0) {
29                 ipAddress = ipAddress.substring(0, ipAddress.indexOf(ipSeparate));
30             }
31         }
32         return ipAddress;
33     }

 

posted @ 2018-08-09 09:07  Azjs丶V1  阅读(11117)  评论(0)    收藏  举报