關於獲取客戶端ip的問題

原文載自：http://whb198900.blog.163.com/blog/static/76645354201211894938581/

public static String getIpAddr() {
            Object ip = ServletActionContext.getRequest().getHeader("X-Forwarded-For".toLowerCase());
            if (ip == null  || "unknown".equalsIgnoreCase(ip.toString())) {
                ip = ServletActionContext.getRequest().getHeader("Proxy-Client-IP".toLowerCase());
            }
            if (ip == null || "unknown".equalsIgnoreCase(ip.toString())) {
                ip = ServletActionContext.getRequest().getHeader("WL-Proxy-Client-IP".toLowerCase());
            }
            if (ip == null || "unknown".equalsIgnoreCase(ip.toString())) {
                ip = ServletActionContext.getRequest().getHeader("HTTP_CLIENT_IP".toLowerCase());
            }
            if (ip == null || "unknown".equalsIgnoreCase(ip.toString())) {
                ip = ServletActionContext.getRequest().getHeader("HTTP_X_FORWARDED_FOR".toLowerCase());
            }
            if (ip == null || "unknown".equalsIgnoreCase(ip.toString())) {
                ip = ServletActionContext.getRequest().getRemoteAddr();
            }
            return ip.toString();
}