/// <summary>

    /// 设置数据缓存,相对过期

    /// --键值存在时会替换原数据

    /// </summary>

    /// <typeparam name="T"></typeparam>

    /// <param name="cacheKey">键值</param>

    /// <param name="objObject"></param>

    /// <param name="timeout">相对过期时间,最后一次访问所插入对象时与该对象到期时之间的时间间隔（单位：秒）</param>

    public static void SetRelativeCache<T>(string cacheKey, T objObject, int timeout = )//默认30秒过期,30秒不访问就会过期

    {

        try

        {

            if (objObject == null) return;

            var objCache = HttpRuntime.Cache;

            //相对过期时间,最后一次访问的时间超过了时间间隔后才会到期

            objCache.Insert(TypeName<T>() + cacheKey, objObject, null, Cache.NoAbsoluteExpiration, TimeSpan.FromSeconds(timeout), CacheItemPriority.High, null);

        }

        catch (Exception ex)

        {

            throw ex;

        }

    }

/// <summary>

    /// 设置数据缓存,绝对过期时间

    /// --键值存在时会替换原数据

    /// </summary>

    /// <typeparam name="T"></typeparam>

    /// <param name="cacheKey"></param>

    /// <param name="objObject"></param>

    /// <param name="timeout">绝对过期时间（单位：秒,默认300秒以后就会过期）</param>

    public static void SetAbsoluteCache<T>(string cacheKey, T objObject, int timeout = )//默认300秒

    {

        try

        {

            if (objObject == null) return;

            var objCache = HttpRuntime.Cache;

            //绝对过期时间,  TimeSpan.Zero

            objCache.Insert(TypeName<T>() + cacheKey, objObject, null, DateTime.Now.AddSeconds(timeout), Cache.NoSlidingExpiration, CacheItemPriority.High, null);

        }

        catch (Exception ex)

        {

            throw ex;

        }

    }