C# 尝试获取ICacheManager类型的实例时发生激活错误，密钥为“0”；“缓存管理器”；_C#_.net_Caching_Unity Container_Enterprise Library

C# 尝试获取ICacheManager类型的实例时发生激活错误，密钥为“0”；“缓存管理器”；

c# .net caching

C# 尝试获取ICacheManager类型的实例时发生激活错误，密钥为“0”；“缓存管理器”；,c#,.net,caching,unity-container,enterprise-library,C#,.net,Caching,Unity Container,Enterprise Library,我似乎遇到了麻烦，如果有人能在这方面提供帮助，我将不胜感激。我不太清楚下面的错误消息是什么意思。我正在使用企业模式服务的缓存块，但我一直在关注下面的问题。我下载了最新的版本，并试图解决这个问题，但我似乎无法确定确切的问题，我需要帮助，请。提前谢谢 Test method WorldBank.Service.Business.UnitTest.TopicsManagerTest.Call_Children_out_of_schoolTest threw exception: Microsoft.

我似乎遇到了麻烦，如果有人能在这方面提供帮助，我将不胜感激。我不太清楚下面的错误消息是什么意思。我正在使用企业模式服务的缓存块，但我一直在关注下面的问题。我下载了最新的版本，并试图解决这个问题，但我似乎无法确定确切的问题，我需要帮助，请。提前谢谢

Test method WorldBank.Service.Business.UnitTest.TopicsManagerTest.Call_Children_out_of_schoolTest threw exception: 
Microsoft.Practices.ServiceLocation.ActivationException: Activation error occured while trying to get instance of type ICacheManager, key "Cache Manager" ---> Microsoft.Practices.Unity.ResolutionFailedException: Resolution of the dependency failed, type = "Microsoft.Practices.EnterpriseLibrary.Caching.ICacheManager", name = "Cache Manager".
Exception occurred while: while resolving.
Exception is: InvalidOperationException - The current type, Microsoft.Practices.EnterpriseLibrary.Caching.ICacheManager, is an interface and cannot be constructed. Are you missing a type mapping?
-----------------------------------------------
At the time of the exception, the container was:

  Resolving Microsoft.Practices.EnterpriseLibrary.Caching.ICacheManager,WuCache
 ---> System.InvalidOperationException: The current type, Microsoft.Practices.EnterpriseLibrary.Caching.ICacheManager, is an interface and cannot be constructed. Are you missing a type mapping?


Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy.ThrowForAttemptingToConstructInterface(IBuilderContext context) in e:\Builds\Unity\UnityTemp\Compile\Unity\Unity\Src\ObjectBuilder\Strategies\BuildPlan\DynamicMethod\Creation\DynamicMethodConstructorStrategy.cs: line 209
BuildUp_Microsoft.Practices.EnterpriseLibrary.Caching.ICacheManager(IBuilderContext )
Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp(IBuilderContext context) in e:\Builds\Unity\UnityTemp\Compile\Unity\Unity\Src\ObjectBuilder\Strategies\BuildPlan\DynamicMethod\DynamicMethodBuildPlan.cs: line 37
Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp(IBuilderContext context) in e:\Builds\Unity\UnityTemp\Compile\Unity\Unity\Src\ObjectBuilder\Strategies\BuildPlan\BuildPlanStrategy.cs: line 43
Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) in e:\Builds\Unity\UnityTemp\Compile\Unity\Unity\Src\ObjectBuilder\Strategies\StrategyChain.cs: line 110
Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name, IEnumerable`1 resolverOverrides) in e:\Builds\Unity\UnityTemp\Compile\Unity\Unity\Src\UnityContainer.cs: line 511
Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name, IEnumerable`1 resolverOverrides) in e:\Builds\Unity\UnityTemp\Compile\Unity\Unity\Src\UnityContainer.cs: line 515
Microsoft.Practices.Unity.UnityContainer.Resolve(Type t, String name, ResolverOverride[] resolverOverrides) in e:\Builds\Unity\UnityTemp\Compile\Unity\Unity\Src\UnityContainer.cs: line 173
Microsoft.Practices.Unity.UnityServiceLocator.DoGetInstance(Type serviceType, String key) in e:\Builds\Unity\UnityTemp\Compile\Unity\Unity\Src\UnityServiceLocator.cs: line 64
Microsoft.Practices.ServiceLocation.ServiceLocatorImplBase.GetInstance(Type serviceType, String key) in c:\Home\Chris\Projects\CommonServiceLocator\main\Microsoft.Practices.ServiceLocation\ServiceLocatorImplBase.cs: line 49
Microsoft.Practices.ServiceLocation.ServiceLocatorImplBase.GetInstance(Type serviceType, String key) in c:\Home\Chris\Projects\CommonServiceLocator\main\Microsoft.Practices.ServiceLocation\ServiceLocatorImplBase.cs: line 53
Microsoft.Practices.ServiceLocation.ServiceLocatorImplBase.GetInstance[TService](String key) in c:\Home\Chris\Projects\CommonServiceLocator\main\Microsoft.Practices.ServiceLocation\ServiceLocatorImplBase.cs: line 103
Microsoft.Practices.EnterpriseLibrary.Caching.CacheFactory.InnerGetCacheManager(String cacheManagerName) in e:\Builds\EntLib\Latest\Source\Blocks\Caching\Src\Caching\CacheFactory.cs: line 66
Microsoft.Practices.EnterpriseLibrary.Caching.CacheFactory.GetCacheManager(String cacheManagerName) in e:\Builds\EntLib\Latest\Source\Blocks\Caching\Src\Caching\CacheFactory.cs: line 53
WorldBank.Service.Business.ResponseManager.Get_w_Utility() in C:\SOOfficialPiece\WorldBank.Service.Business\ResponseManager.cs: line 42
WorldBank.Service.Business.ResponseManager..ctor() in C:\SOOfficialPiece\WorldBank.Service.Business\ResponseManager.cs: line 34
WorldBank.Service.Business.ResponseManager.getResponseObjectJSON(Int32 perpage, Object results, Boolean doDeepRetrieval) in C:\SOOfficialPiece\WorldBank.Service.Business\ResponseManager.cs: line 68
System.Dynamic.UpdateDelegates.UpdateAndExecute4[T0,T1,T2,T3,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2, T3 arg3)
WorldBankBusiness.Topics.TopicsManager.Call_Children_out_of_school(PersonType persontype, EnrollmentType enrollmenttype, String countrycode) in C:\SOOfficialPiece\WorldBank.Service.Business\TopicsManager.cs: line 39
WorldBank.Service.Business.UnitTest.TopicsManagerTest.Call_Children_out_of_schoolTest() in C:\SOOfficialPiece\WorldBank.Service.Business.UnitTest\TopicsManagerTest.cs: line 88

缓存应用程序块需要在app/web.config中显示一些配置信息，然后才能使用（很遗憾，很难找到其他说明的文档）。如果没有该配置信息，以下代码将导致引发与您看到的相同的异常：

var cm = CacheFactory.GetCacheManager("MyCacheManager");

为了获得

CacheManager

，您需要在app.config或web.config中定义

CacheManager

：

<configuration>
    <configSections>
        <section name="cachingConfiguration" 
                 type="Microsoft.Practices.EnterpriseLibrary.Caching.Configuration.CacheManagerSettings, Microsoft.Practices.EnterpriseLibrary.Caching, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
    </configSections>
    <cachingConfiguration defaultCacheManager="MyCacheManager">
        <cacheManagers>
           <add name="MyCacheManager" type="Microsoft.Practices.EnterpriseLibrary.Caching.CacheManager, Microsoft.Practices.EnterpriseLibrary.Caching, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" 
                expirationPollFrequencyInSeconds="60" 
                maximumElementsInCacheBeforeScavenging="50000" 
                numberToRemoveWhenScavenging="1000"  
                backingStoreName="NullBackingStore" />
        </cacheManagers>
        <backingStores>
            <add type="Microsoft.Practices.EnterpriseLibrary.Caching.BackingStoreImplementations.NullBackingStore, Microsoft.Practices.EnterpriseLibrary.Caching, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" 
                 name="NullBackingStore" />
        </backingStores>
    </cachingConfiguration>
</configuration>


还有一些可能对你有帮助的信息
值得注意的是，如果您使用的是.NET 4.0，对于非web应用程序，您可以使用（在System.Runtime.Caching
命名空间中），该命名空间提供类似的功能，但不需要所有这些配置。对于web应用程序，您当然可以使用System.web.Caching
中的类，我使用的配置与您的示例中类似。缺乏自信是我使用隔离存储库。它一直在工作到现在。通常导致此错误的原因。错误来自Unity（Unity是一个IoC库），缓存应用程序块使用该库。每当您从Unity收到“***是一个接口，无法构造。是否缺少类型映射？”错误时，通常意味着类型映射未在代码或配置文件中向Unity注册。我没有足够的信息来说明为什么你的代码会停止工作，但是如果你需要帮助，你应该发布一个单独的问题，并提供尽可能多的细节。很久没有给出这个答案了，但我应该问：当我将此添加到App.config文件时，服务会变得不稳定，它会“错误1053服务未及时响应启动或控制请求”。原因是什么？很难说。如果您有源代码并将服务编译为控制台应用程序，您应该会收到更详细的错误消息。您能告诉我使用数据缓存存储所需的数据库结构吗