获取客户端请求的ip地址

public static String getIpAddr(HttpServletRequest request){

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

        if(StringUtils.isEmpty(ipAddress) || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("Proxy-Client-IP");
        }

        if(StringUtils.isEmpty(ipAddress) || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("WL-Proxy-Client-IP");
        }

        if (StringUtils.isEmpty(ipAddress) || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("HTTP_CLIENT_IP");
        }

        if (StringUtils.isEmpty(ipAddress) || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("HTTP_X_FORWARDED_FOR");
        }

        if(StringUtils.isNotEmpty(ipAddress) && !"unKnown".equalsIgnoreCase(ipAddress)){
            ipAddress = request.getHeader("X-Real-IP");
        }

        if("127.0.0.1".equals(ipAddress) || "0:0:0:0:0:0:0:1".equals(ipAddress)){
            try {
                //根据网卡取本机配置的IP
                ipAddress= InetAddress.getLocalHost().getHostAddress();
            } catch (UnknownHostException e) {
                e.printStackTrace();
            }
        }

        //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(StringUtils.isNotEmpty(ipAddress)){
            int index = ipAddress.indexOf(",");
            if(index != -1){
                ipAddress = ipAddress.substring(0,index);
            }

            int otherIndex = ipAddress.indexOf(":");
            if(otherIndex != -1){
                ipAddress = ipAddress.substring(0,otherIndex);
            }
        }

        LoggerUtil.doNormalInfo(new ApiResultUtil(), HttpUtil.class, "ipAddress: " + ipAddress);

        return ipAddress;
}

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