获取ip的接口

Question

介绍几个  怎么样获取真实的IP  过滤掉代理的IP

Answer 1

//同学试试这个     public String getIpAddr(HttpServletRequest request){           String ipAddress = request.getHeader("x-forwarded-for");               if(ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {                   ipAddress = request.getHeader("Proxy-Client-IP");               }               if(ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {                   ipAddress = request.getHeader("WL-Proxy-Client-IP");               }               if(ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {                   ipAddress = request.getRemoteAddr();                   if(ipAddress.equals("127.0.0.1") || ipAddress.equals("0:0:0:0:0:0:0:1")){                       //根据网卡取本机配置的IP                       InetAddress inet=null;                       try {                           inet = InetAddress.getLocalHost();                       } catch (UnknownHostException e) {                           e.printStackTrace();                       }                       ipAddress= inet.getHostAddress();                   }               }               //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               if(ipAddress!=null && ipAddress.length()>15){ //"***.***.***.***".length() = 15                   if(ipAddress.indexOf(",")>0){                       ipAddress = ipAddress.substring(0,ipAddress.indexOf(","));                   }               }               return ipAddress;        }