ASP.NET(c#)操作cookie、session、cache工具类

public static class Cookie
    {
        /// 创建COOKIE对象并赋Value值
        /// <summary>
        /// 创建COOKIE对象并赋Value值，修改COOKIE的Value值也用此方法，因为对COOKIE修改必须重新设Expires
        /// </summary>
        /// <param name="strCookieName">COOKIE对象名</param>
        /// <param name="iExpires">COOKIE对象有效时间（秒数），1表示永久有效，0和负数都表示不设有效时间，大于等于2表示具体有效秒数，31536000秒=1年=(60*60*24*365)，</param>
        /// <param name="strValue">COOKIE对象Value值</param>
        public static void SetObj(string strCookieName, int iExpires, string strValue)
        {
            HttpCookie objCookie = new HttpCookie(strCookieName.Trim());
            objCookie.Value = Utils.EncodeURIComponent(strValue.Trim());
            objCookie.Domain = N0.Config.CommonConfig.strDomain;
            if (iExpires > 0)
            {
                if (iExpires == 1)
                {
                    objCookie.Expires = DateTime.MaxValue;
                }
                else
                {
                    objCookie.Expires = DateTime.Now.AddSeconds(iExpires);
                }
            }
            HttpContext.Current.Response.Cookies.Add(objCookie);
        }
        /// 创建COOKIE对象并赋多个KEY键值
        /// <summary>
        /// 创建COOKIE对象并赋多个KEY键值
        /// 设键/值如下：
        /// NameValueCollection myCol = new NameValueCollection();
        /// myCol.Add("red", "rojo");
        /// myCol.Add("green", "verde");
        /// myCol.Add("blue", "azul");
        /// myCol.Add("red", "rouge");   结果“red:rojo,rouge；green:verde；blue:azul”
        /// </summary>
        /// <param name="strCookieName">COOKIE对象名</param>
        /// <param name="iExpires">COOKIE对象有效时间（秒数），1表示永久有效，0和负数都表示不设有效时间，大于等于2表示具体有效秒数，31536000秒=1年=(60*60*24*365)，</param>
        /// <param name="KeyValue">键/值对集合</param>
        public static void SetObj(string strCookieName, int iExpires, NameValueCollection KeyValue)
        {
            HttpCookie objCookie = new HttpCookie(strCookieName.Trim());
            foreach (String key in KeyValue.AllKeys)
            {
                objCookie[key] = Utils.EncodeURIComponent(KeyValue[key].Trim());
            }
            objCookie.Domain = N0.Config.CommonConfig.strDomain;
            if (iExpires > 0)
            {
                if (iExpires == 1)
                {
                    objCookie.Expires = DateTime.MaxValue;
                }
                else
                {
                    objCookie.Expires = DateTime.Now.AddSeconds(iExpires);
                }
            }
            HttpContext.Current.Response.Cookies.Add(objCookie);
        }
        /// 创建COOKIE对象并赋Value值
        /// <summary>
        /// 创建COOKIE对象并赋Value值，修改COOKIE的Value值也用此方法，因为对COOKIE修改必须重新设Expires
        /// </summary>
        /// <param name="strCookieName">COOKIE对象名</param>
        /// <param name="iExpires">COOKIE对象有效时间（秒数），1表示永久有效，0和负数都表示不设有效时间，大于等于2表示具体有效秒数，31536000秒=1年=(60*60*24*365)，</param>
        /// <param name="strDomain">作用域</param>
        /// <param name="strValue">COOKIE对象Value值</param>
        public static void SetObj(string strCookieName, int iExpires, string strValue, string strDomain)
        {
            HttpCookie objCookie = new HttpCookie(strCookieName.Trim());
            objCookie.Value = Utils.EncodeURIComponent(strValue.Trim());
            objCookie.Domain = strDomain.Trim();
            if (iExpires > 0)
            {
                if (iExpires == 1)
                {
                    objCookie.Expires = DateTime.MaxValue;
                }
                else
                {
                    objCookie.Expires = DateTime.Now.AddSeconds(iExpires);
                }
            }
            HttpContext.Current.Response.Cookies.Add(objCookie);
        }
        /// 创建COOKIE对象并赋多个KEY键值
        /// <summary>
        /// 创建COOKIE对象并赋多个KEY键值
        /// 设键/值如下：
        /// NameValueCollection myCol = new NameValueCollection();
        /// myCol.Add("red", "rojo");
        /// myCol.Add("green", "verde");
        /// myCol.Add("blue", "azul");
        /// myCol.Add("red", "rouge");   结果“red:rojo,rouge；green:verde；blue:azul”
        /// </summary>
        /// <param name="strCookieName">COOKIE对象名</param>
        /// <param name="iExpires">COOKIE对象有效时间（秒数），1表示永久有效，0和负数都表示不设有效时间，大于等于2表示具体有效秒数，31536000秒=1年=(60*60*24*365)，</param>
        /// <param name="strDomain">作用域</param>
        /// <param name="KeyValue">键/值对集合</param>
        public static void SetObj(string strCookieName, int iExpires, NameValueCollection KeyValue, string strDomain)
        {
            HttpCookie objCookie = new HttpCookie(strCookieName.Trim());
            foreach (String key in KeyValue.AllKeys)
            {
                objCookie[key] = Utils.EncodeURIComponent(KeyValue[key].Trim());
            }
            objCookie.Domain = strDomain.Trim();
            if (iExpires > 0)
            {
                if (iExpires == 1)
                {
                    objCookie.Expires = DateTime.MaxValue;
                }
                else
                {
                    objCookie.Expires = DateTime.Now.AddSeconds(iExpires);
                }
            }
            HttpContext.Current.Response.Cookies.Add(objCookie);
        }

        /// 读取Cookie某个对象的Value值
        /// <summary>
        /// 读取Cookie某个对象的Value值，返回Value值，如果对象本就不存在，则返回字符串"CookieNonexistence"
        /// </summary>
        /// <param name="strCookieName">Cookie对象名称</param>
        /// <returns>Value值，如果对象本就不存在，则返回字符串"CookieNonexistence"</returns>
        public static string GetValue(string strCookieName)
        {
            if (HttpContext.Current.Request.Cookies[strCookieName] == null)  
              {
                  return "CookieNonexistence";
              }  
              else  
              {
                  return Utils.DecodeURIComponent(HttpContext.Current.Request.Cookies[strCookieName].Value);
              }
        }
        /// 读取Cookie某个对象的某个Key键的键值
        /// <summary>
        /// 读取Cookie某个对象的某个Key键的键值，返回Key键值，如果对象本就不存在，则返回字符串"CookieNonexistence"，如果Key键不存在，则返回字符串"KeyNonexistence"
        /// </summary>
        /// <param name="strCookieName">Cookie对象名称</param>
        /// <param name="strKeyName">Key键名</param>
        /// <returns>Key键值，如果对象本就不存在，则返回字符串"CookieNonexistence"，如果Key键不存在，则返回字符串"KeyNonexistence"</returns>
        public static string GetValue(string strCookieName,string strKeyName)
        {
            if (HttpContext.Current.Request.Cookies[strCookieName] == null)
            {
                return "CookieNonexistence";
            }
            else
            {
                string strObjValue = Utils.DecodeURIComponent(HttpContext.Current.Request.Cookies[strCookieName].Value);
                string strKeyName2 = strKeyName+"=";
                if (strObjValue.IndexOf(strKeyName2) == -1)
                {
                    return "KeyNonexistence";
                }
                else
                {
                    return Utils.DecodeURIComponent(HttpContext.Current.Request.Cookies[strCookieName][strKeyName]);
                }
            }
        }

        /// 修改某个COOKIE对象某个Key键的键值 或 给某个COOKIE对象添加Key键 都调用本方法
        /// <summary>
        /// 修改某个COOKIE对象某个Key键的键值 或 给某个COOKIE对象添加Key键 都调用本方法，操作成功返回字符串"success"，如果对象本就不存在，则返回字符串"CookieNonexistence"。
        /// </summary>
        /// <param name="strCookieName">Cookie对象名称</param>
        /// <param name="strKeyName">Key键名</param>
        /// <param name="KeyValue">Key键值</param>
        /// <param name="iExpires">COOKIE对象有效时间（秒数），1表示永久有效，0和负数都表示不设有效时间，大于等于2表示具体有效秒数，31536000秒=1年=(60*60*24*365)。注意：虽是修改功能，实则重建覆盖，所以时间也要重设，因为没办法获得旧的有效期</param>
        /// <returns>如果对象本就不存在，则返回字符串"CookieNonexistence"，如果操作成功返回字符串"success"。</returns>
        public static string Edit(string strCookieName, string strKeyName, string KeyValue,int iExpires)
        {
            if (HttpContext.Current.Request.Cookies[strCookieName] == null)
            {
                return "CookieNonexistence";
            }
            else
            {
                HttpCookie objCookie = HttpContext.Current.Request.Cookies[strCookieName];
                objCookie[strKeyName] = Utils.EncodeURIComponent(KeyValue.Trim());
                objCookie.Domain = N0.Config.CommonConfig.strDomain;
                if (iExpires > 0)
                {
                    if (iExpires == 1)
                    {
                        objCookie.Expires = DateTime.MaxValue;
                    }
                    else
                    {
                        objCookie.Expires = DateTime.Now.AddSeconds(iExpires);
                    }
                }
                HttpContext.Current.Response.Cookies.Add(objCookie);
                return "success";
            }
        }

        /// 删除COOKIE对象
        /// <summary>
        /// 删除COOKIE对象
        /// </summary>
        /// <param name="strCookieName">Cookie对象名称</param>
        public static void Del(string strCookieName)
        {
            HttpCookie objCookie = new HttpCookie(strCookieName.Trim());
            objCookie.Domain = N0.Config.CommonConfig.strDomain;
            objCookie.Expires = DateTime.Now.AddYears(-5);
            HttpContext.Current.Response.Cookies.Add(objCookie);
        }
        /// 删除某个COOKIE对象某个Key子键
        /// <summary>
        /// 删除某个COOKIE对象某个Key子键，操作成功返回字符串"success"，如果对象本就不存在，则返回字符串"CookieNonexistence"
        /// </summary>
        /// <param name="strCookieName">Cookie对象名称</param>
        /// <param name="strKeyName">Key键名</param>
        /// <param name="iExpires">COOKIE对象有效时间（秒数），1表示永久有效，0和负数都表示不设有效时间，大于等于2表示具体有效秒数，31536000秒=1年=(60*60*24*365)。注意：虽是修改功能，实则重建覆盖，所以时间也要重设，因为没办法获得旧的有效期</param>
        /// <returns>如果对象本就不存在，则返回字符串"CookieNonexistence"，如果操作成功返回字符串"success"。</returns>
        public static string Del(string strCookieName, string strKeyName, int iExpires)
        {
            if (HttpContext.Current.Request.Cookies[strCookieName] == null)
            {
                return "CookieNonexistence";
            }
            else
            {
                HttpCookie objCookie = HttpContext.Current.Request.Cookies[strCookieName];
                objCookie.Values.Remove(strKeyName);
                objCookie.Domain = N0.Config.CommonConfig.strDomain;
                if (iExpires > 0)
                {
                    if (iExpires == 1)
                    {
                        objCookie.Expires = DateTime.MaxValue;
                    }
                    else
                    {
                        objCookie.Expires = DateTime.Now.AddSeconds(iExpires);
                    }
                }
                HttpContext.Current.Response.Cookies.Add(objCookie);
                return "success";
            }
        }
    }
    /// Session操作类
    /// <summary>
    /// Session操作类
    /// </summary>
    public static class SessionCustom
    {
        /// 添加Session，调动有效期默认为23分钟
        /// <summary>
        /// 添加Session，调动有效期默认为23分钟
        /// </summary>
        /// <param name="strSessionName">Session对象名称</param>
        /// <param name="strValue">Session值</param>
        public static void Add(string strSessionName, string strValue)
        {
            HttpContext.Current.Session[strSessionName] = strValue;
            HttpContext.Current.Session.Timeout = 23;
        }
        /// 添加Session
        /// <summary>
        /// 添加Session
        /// </summary>
        /// <param name="strSessionName">Session对象名称</param>
        /// <param name="strValue">Session值</param>
        /// <param name="iExpires">调动有效期（分钟）</param>
        public static void Add(string strSessionName, string strValue, int iExpires)
        {
            HttpContext.Current.Session[strSessionName] = strValue;
            HttpContext.Current.Session.Timeout = iExpires;
        }

        /// 读取某个Session对象值
        /// <summary>
        /// 读取某个Session对象值
        /// </summary>
        /// <param name="strSessionName">Session对象名称</param>
        /// <returns>Session对象值</returns>
        public static string Get(string strSessionName)
        {
            if (HttpContext.Current.Session[strSessionName] == null)
            {
                return null;
            }
            else
            {
                return HttpContext.Current.Session[strSessionName].ToString();
            }
        }

        /// 删除某个Session对象
        /// <summary>
        /// 删除某个Session对象
        /// </summary>
        /// <param name="strSessionName">Session对象名称</param>
        public static void Del(string strSessionName)
        {
            HttpContext.Current.Session[strSessionName] = null;
        }
    }

    /// Cache操作类
    /// <summary>
    /// Cache操作类
    /// </summary>
    public static class CacheCustom
    {
        /// 简单创建/修改Cache，前提是这个值是字符串形式的
        /// <summary>
        /// 简单创建/修改Cache，前提是这个值是字符串形式的
        /// </summary>
        /// <param name="strCacheName">Cache名称</param>
        /// <param name="strValue">Cache值</param>
        /// <param name="iExpires">有效期，秒数（使用的是当前时间+秒数得到一个绝对到期值）</param>
        /// <param name="priority">保留优先级，1最不会被清除，6最容易被内存管理清除（1:NotRemovable；2:High；3:AboveNormal；4:Normal；5:BelowNormal；6:Low）</param>
        public static void Insert(string strCacheName, string strValue, int iExpires, int priority)
        {
            TimeSpan ts = new TimeSpan(0, 0, iExpires);
            CacheItemPriority cachePriority;
            switch (priority)
            {
                case 6:
                    cachePriority = CacheItemPriority.Low;
                    break;
                case 5:
                    cachePriority = CacheItemPriority.BelowNormal;
                    break;
                case 4:
                    cachePriority = CacheItemPriority.Normal;
                    break;
                case 3:
                    cachePriority = CacheItemPriority.AboveNormal;
                    break;
                case 2:
                    cachePriority = CacheItemPriority.High;
                    break;
                case 1:
                    cachePriority = CacheItemPriority.NotRemovable;
                    break;
                default:
                    cachePriority = CacheItemPriority.Default;
                    break;
            }
            HttpContext.Current.Cache.Insert(strCacheName, strValue, null, DateTime.Now.Add(ts), System.Web.Caching.Cache.NoSlidingExpiration, cachePriority, null);
        }

        /// 简单读书Cache对象的值，前提是这个值是字符串形式的
        /// <summary>
        /// 简单读书Cache对象的值，前提是这个值是字符串形式的
        /// </summary>
        /// <param name="strCacheName">Cache名称</param>
        /// <returns>Cache字符串值</returns>
        public static string Get(string strCacheName)
        {
            return HttpContext.Current.Cache[strCacheName].ToString();
        }

        /// 删除Cache对象
        /// <summary>
        /// 删除Cache对象
        /// </summary>
        /// <param name="strCacheName">Cache名称</param>
        public static void Del(string strCacheName)
        {
            HttpContext.Current.Cache.Remove(strCacheName);
        }
    }