使用Microsoft.Practices.EnterpriseLibrary缓存时GetCacheManager报错问题

我正尝试实现EnterpriseLibrary缓存与日志功能，已安装最新版本（6.0.1304.0）的EnterpriseLibrary.Logging和EnterpriseLibrary.Common，以及最新版本（5.0.505.0）的EnterpriseLibrary.Caching。执行代码CacheManager cacheManager = (CacheManager)CacheFactory.GetCacheManager();创建缓存管理器时，抛出以下错误：

错误信息 #

System.TypeLoadException
HResult=0x80131522
Message=无法从程序集'Microsoft.Practices.EnterpriseLibrary.Common, Version=6.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'中加载类型'Microsoft.Practices.EnterpriseLibrary.Common.Configuration.EnterpriseLibraryContainer'。
Source=Microsoft.Practices.EnterpriseLibrary.Caching

web.config配置内容 #

<configSections>
  <section name="cachingConfiguration" 
type="Microsoft.Practices.EnterpriseLibrary.Caching.Configuration.CacheManagerSettings, 
Microsoft.Practices.EnterpriseLibrary.Caching, Version=5.0.505.0, Culture=neutral, 
PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
</configSections>
<cachingConfiguration defaultCacheManager="Default Cache Manager">
    <cacheManagers>
        <add name="Default Cache Manager" expirationPollFrequencyInSeconds="60" 
    maximumElementsInCacheBeforeScavenging="1000" numberToRemoveWhenScavenging="10" 
    backingStoreName="inMemory" type="Microsoft.Practices.EnterpriseLibrary.Caching.CacheManager,Microsoft.Practices.EnterpriseLibrary.Caching, Version=5.0.505.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
    </cacheManagers>
    <backingStores>
        <add name="inMemory" type="Microsoft.Practices.EnterpriseLibrary.Caching.BackingStoreImplementations.NullBackingStore, Microsoft.Practices.EnterpriseLibrary.Caching, Version=5.0.505.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
    </backingStores>
</cachingConfiguration>

这个错误的核心是版本不兼容：

• EnterpriseLibrary 5.0的Caching组件依赖Microsoft.Practices.EnterpriseLibrary.Common中的EnterpriseLibraryContainer类，但该类在6.0版本的Common组件中已被移除重构。
• 同时引用5.0的Caching和6.0的Common，导致运行时加载不到Caching所需的类型。

解决步骤：

1. 统一组件版本：卸载5.0版本的EnterpriseLibrary.Caching，安装与Logging、Common同版本（6.0.1304.0）的Caching组件。
2. 更新配置文件：将web.config中所有Caching相关配置的版本号从5.0.505.0替换为6.0.0.0（注：6.0版本程序集版本号为6.0.0.0，文件版本为6.0.1304.0）。
3. 调整初始化代码：6.0版本不再使用CacheFactory.GetCacheManager()，改用EnterpriseLibraryContainer.Current.GetInstance<ICacheManager>()。

调整后的web.config片段示例 #

<configSections>
  <section name="cachingConfiguration" 
type="Microsoft.Practices.EnterpriseLibrary.Caching.Configuration.CacheManagerSettings, 
Microsoft.Practices.EnterpriseLibrary.Caching, Version=6.0.0.0, Culture=neutral, 
PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
</configSections>
<cachingConfiguration defaultCacheManager="Default Cache Manager">
    <cacheManagers>
        <add name="Default Cache Manager" expirationPollFrequencyInSeconds="60" 
    maximumElementsInCacheBeforeScavenging="1000" numberToRemoveWhenScavenging="10" 
    backingStoreName="inMemory" type="Microsoft.Practices.EnterpriseLibrary.Caching.CacheManager,Microsoft.Practices.EnterpriseLibrary.Caching, Version=6.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
    </cacheManagers>
    <backingStores>
        <add name="inMemory" type="Microsoft.Practices.EnterpriseLibrary.Caching.BackingStoreImplementations.NullBackingStore, Microsoft.Practices.EnterpriseLibrary.Caching, Version=6.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
    </backingStores>
</cachingConfiguration>

调整后的初始化代码示例 #

using Microsoft.Practices.EnterpriseLibrary.Caching;
using Microsoft.Practices.EnterpriseLibrary.Common.Configuration;

ICacheManager cacheManager = EnterpriseLibraryContainer.Current.GetInstance<ICacheManager>();

内容的提问来源于stack exchange，提问作者Jey