如何获取客户端真实IP地址

 1.获得客户端真实IP地址的方法一：


Java code 

public String getRemortIP(HttpServletRequest request) {

  if (request.getHeader("x-forwarded-for") == null) {

   return request.getRemoteAddr();

  }

  return request.getHeader("x-forwarded-for");

 } 

 2.获得客户端真实IP地址的方法二：

Java code 

public String getIpAddr(HttpServletRequest request) {

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

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

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

       }

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

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

       }

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

           ip = request.getRemoteAddr();

       }

       return ip;

   }