public class NetworkUtil {private static final Logger logger = LoggerFactory.getLogger(NetworkUtil.class);/*** 獲取請求主機IP地址,如果通過代理進來，則透過防火墻獲取真實IP地址;*/public static String getIpAddress(HttpServletRequest request) {// 獲取請求主機IP地址,如果通過代理進來，則透過防火墻獲取真實IP地址String ip = request.getHeader("X-Forwarded-For");logger.info("X-Forwarded-For - String ip=" + ip);if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("Proxy-Client-IP");logger.info("Proxy-Client-IP - String ip=" + ip);}if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("WL-Proxy-Client-IP");logger.info("WL-Proxy-Client-IP - String ip=" + ip);}if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("HTTP_CLIENT_IP");logger.info("HTTP_CLIENT_IP - String ip=" + ip);}if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("HTTP_X_FORWARDED_FOR");logger.info("HTTP_X_FORWARDED_FOR - String ip=" + ip);}if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getRemoteAddr();logger.info("getRemoteAddr - String ip=" + ip);}} else if (ip.length() > 15) {String[] ips = ip.split(",");for (int index = 0; index < ips.length; index++) {String strIp = (String) ips[index];if (!("unknown".equalsIgnoreCase(strIp))) {ip = strIp;break;}}}return ip;} }

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