ASP.NET 中HttpRuntime.Cache缓存数据

最近在开始一个微信开发，发现微信的Access_Token获取每天次数是有限的，然后想到缓存，正好看到微信教程里面推荐HttpRuntime.Cache缓存就顺便看了下。

写了（Copy）了一个辅助类，目前只包括创建，获取，及清空

下面是代码：

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

     namespace TEST.Public
     {
         public class CacheHelper
         {

             /// <summary>
             /// 创建缓存
             /// </summary>
             /// <param name="key">缓存的Key</param>
             /// <param name="value">缓存的数据</param>
             /// <param name="cacheDependency">依赖项，一般为null</param>
             /// <param name="dateTime">缓存过期时间</param>
             /// <param name="timeSpan">设置缓存是不使用过期还是到时间就过期</param>
             /// <param name="cacheItemPriority">缓存优先级</param>
             /// <param name="cacheItemRemovedCallback">回调方法，一般为null</param>
             /// <returns></returns>
             public bool CreateCache(string key, object value, CacheDependency cacheDependency, DateTime dateTime, TimeSpan timeSpan,
                 CacheItemPriority cacheItemPriority, CacheItemRemovedCallback cacheItemRemovedCallback)
             {
                 if (string.IsNullOrEmpty(key) || value == null)
                 {
                     return false;
                 }
                 HttpRuntime.Cache.Insert(key, value, cacheDependency, dateTime, timeSpan, cacheItemPriority, cacheItemRemovedCallback);
                 return true;
             }

             /// <summary>
             /// 获取缓存
             /// </summary>
             /// <param name="key"></param>
             /// <returns></returns>
             public object GetCache(string key)
             {
                 return string.IsNullOrEmpty(key) ? null : HttpRuntime.Cache.Get(key);
             }

             /// <summary>
             /// 移除所有缓存
             /// </summary>
             /// <returns></returns>
             public bool RemoveAll()
             {
                 IDictionaryEnumerator iDictionaryEnumerator = HttpRuntime.Cache.GetEnumerator();
                 while (iDictionaryEnumerator.MoveNext())
                 {
                     HttpRuntime.Cache.Remove(Convert.ToString(iDictionaryEnumerator.Key));
                 }
                 return true;
             }
         }
     }