获取客户端使用的ip

一般使用jsp的时候大多数时间都可以使用request.getRemoteAddr() 来获取ip，但是这个前提是未经过反向代理等操作的原始地址，所以，需要在反向代理等操作之后还要获取客户端的ip变得困难重重，这里给大家个方法，仅供参考

 1 //获取客户端真实注册地址
 2     public String getRemoteHost(HttpServletRequest request){
 3         String ip = request.getHeader("x-forwarded-for");
 4         if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)){
 5             ip = request.getHeader("Proxy-Client-IP");
 6         }
 7         if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)){
 8             ip = request.getHeader("WL-Proxy-Client-IP");
 9         }
10         if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)){
11             ip = request.getRemoteAddr();
12         }
13         return ip.equals("0:0:0:0:0:0:0:1")?"127.0.0.1":ip;
14     }