Question

我们在IIS 10中托管了WCF服务应用程序。

每次闲置20分钟后，每次IIS回收应用程序池时，使用MsgPack进行反序列化时，都会出现以下异常：

The type initializer for 'MsgPack.Serialization.EmittingSerializers.SerializationMethodGeneratorManager' threw an exception. System.TypeInitializationException: The type initializer for 'MsgPack.Serialization.EmittingSerializers.SerializationMethodGeneratorManager' threw an exception. ---> System.Runtime.InteropServices.COMException: Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))
   at System.Reflection.Emit.AssemblyBuilder.DefineDynamicModule(RuntimeAssembly containingAssembly, Boolean emitSymbolInfo, String name, String filename, StackCrawlMarkHandle stackMark, IntPtr& pInternalSymWriter, ObjectHandleOnStack retModule, Boolean fIsTransient, Int32& tkFile)
   at System.Reflection.Emit.AssemblyBuilder.DefineDynamicModule(RuntimeAssembly containingAssembly, Boolean emitSymbolInfo, String name, String filename, StackCrawlMark& stackMark, IntPtr& pInternalSymWriter, Boolean fIsTransient, Int32& tkFile)
   at System.Reflection.Emit.AssemblyBuilder.DefineDynamicModuleInternalNoLock(String name, String fileName, Boolean emitSymbolInfo, StackCrawlMark& stackMark)
   at System.Reflection.Emit.AssemblyBuilder.DefineDynamicModuleInternal(String name, String fileName, Boolean emitSymbolInfo, StackCrawlMark& stackMark)
   at System.Reflection.Emit.AssemblyBuilder.DefineDynamicModule(String name, String fileName, Boolean emitSymbolInfo)
   at MsgPack.Serialization.EmittingSerializers.SerializationMethodGeneratorManager..ctor(Boolean isDebuggable, Boolean isCollectable, AssemblyBuilder assemblyBuilder)
   at MsgPack.Serialization.EmittingSerializers.SerializationMethodGeneratorManager.Create(Boolean isDebuggable, Boolean isCollectable, AssemblyBuilder assemblyBuilder)
   at MsgPack.Serialization.EmittingSerializers.SerializationMethodGeneratorManager..cctor()
   --- End of inner exception stack trace ---
   at MsgPack.Serialization.EmittingSerializers.SerializationMethodGeneratorManager.Get(SerializationMethodGeneratorOption option)
   at MsgPack.Serialization.EmittingSerializers.AssemblyBuilderSerializerBuilder.<>c__DisplayClass63_0.<CreateCodeGenerationContextForSerializerCreation>b__1()
   at MsgPack.Serialization.EmittingSerializers.AssemblyBuilderEmittingContext.get_Emitter()
   at MsgPack.Serialization.EmittingSerializers.AssemblyBuilderEmittingContext.BeginMethodOverride(String name)
   at MsgPack.Serialization.AbstractSerializers.SerializerBuilder`2.BuildObjectPackTo(TContext context, SerializationTarget targetInfo, Boolean isAsync)
   at MsgPack.Serialization.AbstractSerializers.SerializerBuilder`2.BuildObjectSerializer(TContext context)
   at MsgPack.Serialization.AbstractSerializers.SerializerBuilder`2.BuildSerializer(TContext context, Type concreteType, PolymorphismSchema schema, SerializationTarget& targetInfo)
   at MsgPack.Serialization.AbstractSerializers.SerializerBuilder`2.BuildSerializerInstance(SerializationContext context, Type concreteType, PolymorphismSchema schema)
   at MsgPack.Serialization.MessagePackSerializer.CreateInternal[T](SerializationContext context, PolymorphismSchema schema)
   at MsgPack.Serialization.SerializationContext.GetSerializer[T](Object providerParameter)

当我手动回收应用程序池时，问题消失了，一切正常。在发生自动回收事件之前，问题一直存在。

在应用程序使用以下代码启动后，我已经强制所有程序集立即加载到AppDomain中：

var assemblies = BuildManager.GetReferencedAssemblies().Cast<Assembly>();

有人对此有任何线索吗？

回收应用程序池后使用MsgPack序列化程序时，REGDB_E_CLASSNOTREG

0 个答案: