获取请求的实际ip

    /**
     * 获取请求的实际ip
     */
    public static String getStringIP(HttpServletRequest request) {
        String 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.getRemoteAddr();
        }

        if (StringUtils.isNotBlank(ip)) {
            ip = "0:0:0:0:0:0:0:1".equals(ip) ? "127.0.0.1" : ip.split(",")[0];
        }
        return ip;
    }