JAVA获取客户端IP地址

• 场景：需要服务端获取到客户端得ip，然后塞到请求参数中。

• 自己整理了下这两种获取客户端IP得方法。目前自己在使用得是第二种。

1. 第一种方法

 public static String getIp2(HttpServletRequest request) {String ip = request.getHeader("X-Forwarded-For");if(StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)){//多次反向代理后会有多个ip值，第一个ip才是真实ipint index = ip.indexOf(",");if(index != -1){return ip.substring(0,index);}else{return ip;}}ip = request.getHeader("X-Real-IP");if(StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)){return ip;}return request.getRemoteAddr();}

1. 第二种方法

public static String getClinetIP(HttpServletRequest request){String ip = null;if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)){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.getHeader("entrust-client-ip");}if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)){ip = request.getRemoteAddr();if ("127.0.0.1".equals(ip) || "0:0:0:0:0:0:0:1".equals(ip.trim())){InetAddress inetAddress = null;try{inetAddress =InetAddress.getLocalHost();}catch (UnknownHostException e){System.out.println("获取IP地址失败");}ip = inetAddress.getHostAddress();}}//多级 方向代理if (ip.indexOf(",")>0){ip = ip.substring(0,ip.indexOf(",")).trim();}return ip;}

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