获取用户的IP地址，作为防钓鱼的一种方法

获取用户的IP地址，作为防钓鱼的一种方法

String clientIp = request.getHeader("x-forwarded-for");
??? ??? if ((clientIp == null) || (clientIp.length() == 0)
??? ??? ??? ??? || ("unknown".equalsIgnoreCase(clientIp))) {
??? ??? ??? clientIp = request.getHeader("Proxy-Client-IP");
??? ??? }
??? ??? if ((clientIp == null) || (clientIp.length() == 0)
??? ??? ??? ??? || ("unknown".equalsIgnoreCase(clientIp))) {
??? ??? ??? clientIp = request.getHeader("WL-Proxy-Client-IP");
??? ??? }
??? ??? if ((clientIp == null) || (clientIp.length() == 0)
??? ??? ??? ??? || ("unknown".equalsIgnoreCase(clientIp))) {
??? ??? ??? clientIp = request.getRemoteAddr();
??? ??? }
??? ??? String ipAddress = clientIp;