/**     * 标识要从哪些消息头中获取IP地址     */    private static final String[] getIpArray =        {
    "HTTP_X_FORWARDED_FOR", "X-Forwarded-For", "Proxy-Client-IP", "WL-Proxy-Client-IP", "HTTP_CLIENT_IP"};　　/**      * 获取请求的IP地址     * 
     <功能详细描述>
           * @param request     * @return     * @see [类、类#方法、类#成员]     */    public static String getIP(HttpServletRequest request)    {        String ip = "";                for (int i = 0, l = getIpArray.length; i < l; i++)                {            ip = request.getHeader(getIpArray[i]);                        if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip))            {                return ip;            }                    }                if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))        {            ip = request.getRemoteAddr();        }        return ip;    }