using System;using System.Web;using XTSoft.Com.DwCmsException;namespace XTSoft.Com.Common{    public sealed class CookieHelper    {        private CookieHelper()        {        }        /// 
        /// 获取一个数组形式的Cookies        /// 
        public static HttpCookie GetCookie(string name)        {            if (!string.IsNullOrEmpty(name))            {                return HttpContext.Current.Request.Cookies[name];            }            else            {                throw new DwException("键值为空!");            }        }        /// 
        /// 移除Cookies        /// 
        public static void RemoveCookie(string name)        {            RemoveCookie(GetCookie(name));        }        /// 
        /// 移除Cookies        /// 
        public static void RemoveCookie(HttpCookie cookie)        {            if (cookie != null)            {                cookie.Expires = new DateTime(1983, 1, 2);                Save(cookie);            }        }        /// 
        /// 保存Cookies        /// 
        public static void Save(HttpCookie cookie)        {            cookie.Domain = "";            HttpContext.Current.Response.AppendCookie(cookie);        }        /// 
        /// 获取一个新的Cookies        /// 
        public static HttpCookie GetNewCookie(string name)        {            return new HttpCookie(name);        }        /// 
        /// 取得指定名称的单值Cookie        /// 
        /// 
             public static string GetCookieValue(string name)        {            HttpCookie cookie = GetCookie(name);            if (cookie == null || cookie.Value == null)            {                return string.Empty;            }            else            {                return cookie.Value;            }        }        /// 
        /// 保存指定名称的单值Cookie        /// 
        /// 
             public static void SetCookie(string name, string value)        {            SetCookie(name, value, DateTime.Now);        }        /// 
        /// 保存指定名称的单值Cookie        /// 
        /// 
             public static void SetCookie(string name, string value, DateTime expires)        {            HttpCookie cookie = GetCookie(name);            if (cookie == null)            {                cookie = GetNewCookie(name);            }            cookie.Value = value;            cookie.Expires = expires;            Save(cookie);        }        /// 
        /// 保存指定名称的单值Cookie        /// 
        /// 
             public static void SetCookie(string name, string value, string path, DateTime expires)        {            HttpCookie cookie = GetCookie(name);            if (cookie == null)            {                cookie = GetNewCookie(name);            }            cookie.Path = path;            cookie.Value = value;            cookie.Expires = expires;            Save(cookie);        }        /// 
        /// 保存指定名称的单值Cookie        /// 
        /// 
             public static void SetCookie(string name, string value, string path)        {            SetCookie(name, value, path, DateTime.Now);        }    }}