获取ip工具类-IPUtils-蒲公英云

获取ip工具类-IPUtils

public class IPUtils { 
    private static Logger logger = LoggerFactory.getLogger(IPUtils.class);
    /** * 获取IP地址 * * 使用Nginx等反向代理软件， 则不能通过request.getRemoteAddr()获取IP地址 * 如果使用了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP地址，X-Forwarded-For中第一个非unknown的有效IP字符串，则为真实IP地址 */
    public static String getIpAddr(HttpServletRequest request) { 
        String ip = null;
        try { 
            ip = request.getHeader("x-forwarded-for");
            if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) { 
                ip = request.getHeader("Proxy-Client-IP");
            }
            if (StringUtils.isEmpty(ip) || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 
                ip = request.getHeader("WL-Proxy-Client-IP");
            }
            if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) { 
                ip = request.getHeader("HTTP_CLIENT_IP");
            }
            if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) { 
                ip = request.getHeader("HTTP_X_FORWARDED_FOR");
            }
            if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) { 
                ip = request.getRemoteAddr();
            }
        } catch (Exception e) { 
            logger.error("IPUtils ERROR ", e);
        }
// //使用代理，则获取第一个IP地址
// if(StringUtils.isEmpty(ip) && ip.length() > 15) { 
// if(ip.indexOf(",") > 0) { 
// ip = ip.substring(0, ip.indexOf(","));
// }
// }
        return ip;
    }
}