获取用户IP地址，防钓鱼

为了防止网站钓鱼，我们需要对用户的IP地址进行分析处理，可是用户也有可能通过代理方式进行操作，那么该如何获取到用户的IP地址呢？

摘自网络上的代码：

 1 public static String getClientIP(HttpServletRequest httpservletrequest) {
 2    if (httpservletrequest == null)
 3       return null;
 4    String s = httpservletrequest.getHeader("X-Forwarded-For");
 5    if (s == null || s.length() == 0 || "unknown".equalsIgnoreCase(s))
 6       s = httpservletrequest.getHeader("Proxy-Client-IP");
 7    if (s == null || s.length() == 0 || "unknown".equalsIgnoreCase(s))
 8       s = httpservletrequest.getHeader("WL-Proxy-Client-IP");
 9    if (s == null || s.length() == 0 || "unknown".equalsIgnoreCase(s))
10       s = httpservletrequest.getHeader("HTTP_CLIENT_IP");
11    if (s == null || s.length() == 0 || "unknown".equalsIgnoreCase(s))
12       s = httpservletrequest.getHeader("HTTP_X_FORWARDED_FOR");
13    if (s == null || s.length() == 0 || "unknown".equalsIgnoreCase(s))
14       s = httpservletrequest.getRemoteAddr();
15    if ("127.0.0.1".equals(s) || "0:0:0:0:0:0:0:1".equals(s))
16       try {
17          s = InetAddress.getLocalHost().getHostAddress();
18       }catch (UnknownHostException uhe) { 
19          uhe.printStackTrace();
20       }
21     return s;
22 }
posted @ 2012-07-26 15:04  zhenxu.liu  阅读(692)  评论(0)  编辑  收藏  举报