springboot 获取ip

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

        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("X-Real-IP");
            //LOGGER.error("X-Real-IP:"+ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("http_client_ip");
　　　　　　//            LOGGER.error("http_client_ip:"+ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
　　　　　　//            LOGGER.error("getRemoteAddr:"+ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
　　　　　　//            LOGGER.error("Proxy-Client-IP:"+ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
　　　　　　//            LOGGER.error("WL-Proxy-Client-IP:"+ip);
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
　　　　　　//            LOGGER.error("HTTP_X_FORWARDED_FOR:"+ip);
        }
        　　// 如果是多级代理，那么取第一个ip为客户ip
        if (ip != null && ip.indexOf(",") != -1) {
            ip = ip.substring(ip.lastIndexOf(",") + 1, ip.length()).trim();
　　　　　　//            LOGGER.error("ip:"+ip);
        }