WebHost无法处理请求。 [英] WebHost failed to process a request.
问题描述
WebHost无法处理请求。
发件人信息：System.ServiceModel.ServiceHostingEnvironment + HostingManager / 18103959
异常：System.ServiceModel.ServiceActivationException：服务''由于编译期间的异常，无法激活/Services/LIS-Web-LISDomainService.svc''。异常消息是：''OCSpace''空间的ItemCollection已经注册.. ---> System.InvalidOperationException：''OCSpace''空间的ItemCollection已经注册。
at System.Data.Metadata.Edm.MetadataWorkspace.RegisterItemCollection（ItemCollection collection）
在System.Data.Metadata.Edm.MetadataWorkspace.RegisterDefaultObjectMappingItemCollection（）
在System.Data.Metadata.Edm.MetadataWorkspace.GetItemCollection（DataSpace dataSpace，需要布尔值）
at System.Data.Metadata.Edm.MetadataWorkspace.TryGetMap（GlobalItem item，DataSpace dataSpace，Map& map）
at System.Data.Metadata.Edm.MetadataWorkspace.TryGetEdmSpaceType（StructuralType objectSpaceType，StructuralType& edmSpaceType ）
at System.ServiceModel.DomainServices.EntityFramework.ObjectContextUtilities.GetEdmType（MetadataWorkspace workspace，Type clrType）
at System.ServiceModel.DomainServices.EntityFramework.LinqToEntitiesDomainServiceDescriptionProvider.LookupIsEntityType（Type Ť ype）
在System.ServiceModel.DomainServices.Server.DomainServiceDescription。<> c__DisplayClass14。<> c__DisplayClass16。< createdescriptionprovider> b__13（DomainServiceDescriptionProvider p）
在System.Linq.Enumerable.Any [TSource]（IEnumerable`1 source，Func`2谓词）
在System.ServiceModel.DomainServices.Server.DomainServiceDescription。<> c__DisplayClass14。< createdescriptionprovider> ; b__12（类型t）
在System.ServiceModel.DomainServices.Server.DomainServiceDescriptionProvider.IsEntityType（类型类型）
在System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescriptionProvider.IsQueryMethod （DomainOperationEntry操作）
在System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescriptionProvider.TryClassifyImplicitDomainOperation（ReflectionDomainOperationEntry操作）
在System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescripti onProvider.ClassifyDomainOperation（ReflectionDomainOperationEntry操作）
在System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescriptionProvider.GetDescription（）
在System.ServiceModel.DomainServices.Server.DomainServiceDescriptionProvider.GetDescription（ ）
在System.ServiceModel.DomainServices.Server.DomainServiceDescription.CreateDescription（类型domainServiceType）
在System.ServiceModel.DomainServices.Server.DomainServiceDescription。<> c__DisplayClass10。 < getdescription> b__f（类型类型）
在System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd（TKey key，Func`2 valueFactory）
在System.ServiceModel .DomainServices.Server.DomainServiceDescription.GetDescription（类型domainServiceType）
在System.ServiceModel.DomainServices.Hosting.DomainServiceHost..ctor（类型domainServiceType，Uri [] baseAddresses）
在System.ServiceModel.DomainServices.Hosting .DomainServiceHostFactory.CreateServiceHost（类型serviceType，Uri [] baseAddresses）
在System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost（String constructorString，Uri [] baseAddresses）
at System .ServiceModel.ServiceHostingEnvironment.HostingManager.CreateService（String normalizedVirtualPath）
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService（String normalizedVirtualPath）
at System.ServiceModel.ServiceHostingEnvironment.HostingManager .EnsureServiceAvailable（String normalizedVirtualPath）
---内部异常堆栈跟踪结束---
在System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable（String normalizedVirtualPath）
进程名称：WebDev.WebServer40
进程ID：4712
请提供关于问题
的贴切描述
WebHost failed to process a request.
Sender Information: System.ServiceModel.ServiceHostingEnvironment+HostingManager/18103959
Exception: System.ServiceModel.ServiceActivationException: The service ''/Services/LIS-Web-LISDomainService.svc'' cannot be activated due to an exception during compilation. The exception message is: The ItemCollection for the ''OCSpace'' space has already been registered.. ---> System.InvalidOperationException: The ItemCollection for the ''OCSpace'' space has already been registered.
at System.Data.Metadata.Edm.MetadataWorkspace.RegisterItemCollection(ItemCollection collection)
at System.Data.Metadata.Edm.MetadataWorkspace.RegisterDefaultObjectMappingItemCollection()
at System.Data.Metadata.Edm.MetadataWorkspace.GetItemCollection(DataSpace dataSpace, Boolean required)
at System.Data.Metadata.Edm.MetadataWorkspace.TryGetMap(GlobalItem item, DataSpace dataSpace, Map& map)
at System.Data.Metadata.Edm.MetadataWorkspace.TryGetEdmSpaceType(StructuralType objectSpaceType, StructuralType& edmSpaceType)
at System.ServiceModel.DomainServices.EntityFramework.ObjectContextUtilities.GetEdmType(MetadataWorkspace workspace, Type clrType)
at System.ServiceModel.DomainServices.EntityFramework.LinqToEntitiesDomainServiceDescriptionProvider.LookupIsEntityType(Type type)
at System.ServiceModel.DomainServices.Server.DomainServiceDescription.<>c__DisplayClass14.<>c__DisplayClass16.<createdescriptionprovider>b__13(DomainServiceDescriptionProvider p)
at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)
at System.ServiceModel.DomainServices.Server.DomainServiceDescription.<>c__DisplayClass14.<createdescriptionprovider>b__12(Type t)
at System.ServiceModel.DomainServices.Server.DomainServiceDescriptionProvider.IsEntityType(Type type)
at System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescriptionProvider.IsQueryMethod(DomainOperationEntry operation)
at System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescriptionProvider.TryClassifyImplicitDomainOperation(ReflectionDomainOperationEntry operation)
at System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescriptionProvider.ClassifyDomainOperation(ReflectionDomainOperationEntry operation)
at System.ServiceModel.DomainServices.Server.ReflectionDomainServiceDescriptionProvider.GetDescription()
at System.ServiceModel.DomainServices.Server.DomainServiceDescriptionProvider.GetDescription()
at System.ServiceModel.DomainServices.Server.DomainServiceDescription.CreateDescription(Type domainServiceType)
at System.ServiceModel.DomainServices.Server.DomainServiceDescription.<>c__DisplayClass10.<getdescription>b__f(Type type)
at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
at System.ServiceModel.DomainServices.Server.DomainServiceDescription.GetDescription(Type domainServiceType)
at System.ServiceModel.DomainServices.Hosting.DomainServiceHost..ctor(Type domainServiceType, Uri[] baseAddresses)
at System.ServiceModel.DomainServices.Hosting.DomainServiceHostFactory.CreateServiceHost(Type serviceType, Uri[] baseAddresses)
at System.ServiceModel.Activation.ServiceHostFactory.CreateServiceHost(String constructorString, Uri[] baseAddresses)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.CreateService(String normalizedVirtualPath)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService(String normalizedVirtualPath)
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)
--- End of inner exception stack trace ---
at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath)
at System.ServiceModel.ServiceHostingEnvironment.EnsureServiceAvailableFast(String relativeVirtualPath)
Process Name: WebDev.WebServer40
Process ID: 4712
Please provide the apt description about the issues
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