1 /**

 2  * 自定义访问对象工具类

 3  *

 4  * 获取对象的IP地址等信息

 5  *

 6  */

 7 public class CusAccessObjectUtil {

 8

 9     /**

10      * 获取用户真实IP地址，不使用request.getRemoteAddr();的原因是有可能用户使用了代理软件方式避免真实IP地址,

11      * 参考文章： http://developer.51cto.com/art/201111/305181.htm

12      *

13      * 可是，如果通过了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP值，究竟哪个才是真正的用户端的真实IP呢？

14      * 答案是取X-Forwarded-For中第一个非unknown的有效IP字符串。

15      *

16      * 如：X-Forwarded-For：192.168.1.110, 192.168.1.120, 192.168.1.130,

17      * 192.168.1.100

18      *

19      * 用户真实IP为： 192.168.1.110

20      *

21      * @param request

22      * @return

23      */

24     public static String getIpAddress(HttpServletRequest request) {

25         String ip = request.getHeader("x-forwarded-for");

26         if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

27             ip = request.getHeader("Proxy-Client-IP");

28         }

29         if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

30             ip = request.getHeader("WL-Proxy-Client-IP");

31         }

32         if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

33             ip = request.getHeader("HTTP_CLIENT_IP");

34         }

35         if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

36             ip = request.getHeader("HTTP_X_FORWARDED_FOR");

37         }

38         if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

39             ip = request.getRemoteAddr();

40         }

41         return ip.split(",")[0];

42     }

43

44 }