Java获取访问者的ip地址

来源：互联网发布：数据异地云备份编辑：程序博客网时间：2024/05/17 08:43

public static String getIp(HttpServletRequest request){ String ipAddress = null;          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")){       //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;}

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