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我想使用企业库日志记录 5 记录我的 SSIS 2008，所以我创建了一个类库项目，添加了所有企业库日志记录依赖项并编写了一个兼容的 App.Config。我通过创建控制台应用程序验证了我的记录器库的一切正常，将我的记录器库添加为参考并开始使用它进行记录 - 一切都没有问题。

现在，当我对我的 SSIS 项目（内部脚本任务）执行相同的过程时，我收到以下错误：

Microsoft.Practices.ServiceLocation.ActivationException: Activation error occured while trying to get instance of type LogWriter, key "" ---> Microsoft.Practices.Unity.ResolutionFailedException: Resolution of the dependency failed, type = "Microsoft.Practices.EnterpriseLibrary.Logging.LogWriter", name = "(none)".
Exception occurred while: while resolving.
Exception is: InvalidOperationException - The type LogWriter cannot be constructed. You must configure the container to supply this value.
-----------------------------------------------
At the time of the exception, the container was:

  Resolving Microsoft.Practices.EnterpriseLibrary.Logging.LogWriter,(none)
 ---> System.InvalidOperationException: The type LogWriter cannot be constructed. You must configure the container to supply this value.
   at Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy.GuardTypeIsNonPrimitive(IBuilderContext context, SelectedConstructor selectedConstructor)
   at Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy.PreBuildUp(IBuilderContext context)
   at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context)
   at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlanCreatorPolicy.CreatePlan(IBuilderContext context, NamedTypeBuildKey buildKey)
   at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp(IBuilderContext context)
   at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context)
   at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name, IEnumerable`1 resolverOverrides)
   --- End of inner exception stack trace ---
   at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name, IEnumerable`1 resolverOverrides)
   at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, String name, IEnumerable`1 resolverOverrides)
   at Microsoft.Practices.Unity.UnityContainer.Resolve(Type t, String name, ResolverOverride[] resolverOverrides)
   at Microsoft.Practices.Unity.UnityServiceLocator.DoGetInstance(Type serviceType, String key)
   at Microsoft.Practices.ServiceLocation.ServiceLocatorImplBase.GetInstance(Type serviceType, String key)
   --- End of inner exception stack trace ---
   at Microsoft.Practices.ServiceLocation.ServiceLocatorImplBase.GetInstance(Type serviceType, String key)
   at Microsoft.Practices.ServiceLocation.ServiceLocatorImplBase.GetInstance[TService]()
   at Microsoft.Practices.EnterpriseLibrary.Logging.Logger.get_Writer()
   at Microsoft.Practices.EnterpriseLibrary.Logging.Logger.Write(LogEntry log)
   at ClaimRoomSSIS_SharedCode.Utilities.Logger.Debug(String msg, Module module)
   at ST_a3e0b574a8964ffb8af6f9fee31d5afd.csproj.ScriptMain.Main()

我不明白这一点，我做了我能想到的一切：

  1. 参考我的记录器库
  2. 添加到我的脚本任务 App.Config 中，其内容与我之前尝试过的 App.Config 相同。
  3. 检查我的脚本任务和类库是否在相同的框架版本下工作

通常这个错误与 App.Config 问题有关，但我从我的 Tester 项目中获取了完全相同的 App.Config，所以我不确定为什么它仍然会发生。

您知道我该如何解决吗？

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