【.net】缓存操作

 类：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Caching;

namespace RisunFactoryLibrary
{
    public class CacheHelper
    {
        /// 

        /// 创建缓存项的文件依赖
        /// 
        /// 缓存Key
        /// object对象
        /// 文件绝对路径
        public static void Insert(string key, object obj, string fileName)
        {
            //创建缓存依赖项
            CacheDependency dep = new CacheDependency(fileName);
            //创建缓存
            HttpContext.Current.Cache.Insert(key, obj, dep);
        }

        /// 

        /// 创建缓存项的文件依赖
        /// 
        /// 缓存Key
        /// object对象
        /// 文件绝对路径
        public static void Remove(string key)
        {
            //创建缓存
            HttpContext.Current.Cache.Remove(key);
        }

        /// 

        /// 创建缓存项过期
        /// 
        /// 缓存Key
        /// object对象
        /// 过期时间(分钟)
        public static void Insert(string key, object obj, int expires)
        {
            HttpContext.Current.Cache.Insert(key, obj, null, Cache.NoAbsoluteExpiration, new TimeSpan(0, expires, 0));
        }

        /// 

        /// 获取缓存对象
        /// 
        /// 缓存Key
        /// object对象
        public static object Get(string key)
        {
            if (string.IsNullOrEmpty(key))
            {
                return null;
            }
            return HttpContext.Current.Cache.Get(key);
        }

        /// 

        /// 获取缓存对象
        /// 
        /// T对象
        /// 缓存Key
        /// 
        public static T Get(string key)
        {
            object obj = Get(key);
            return obj == null ? default(T) : (T)obj;
        }


    }
}

调用：

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