使用Excel Power Query無法連接到OData v4服務：無效的元數據？

Question

2015年4月版的Excel Power Query宣傳OData v4兼容性。然而，當我嘗試連接到使用Web API（Microsoft.Data.OData.5.6.0，Microsoft.AspNet.WebApi.OData.5.5.1，Microsoft.OData.Core.6.10.0），我得到一個

DataSource.Error: OData: The feed's metadata document appears to be invalid.

我是唯一一個寫我的OData v4的服務？有沒有一種方法來調試呢？

這裏的元數據文件：

<?xml version="1.0" encoding="utf-8"?> 
<edmx:Edmx Version="4.0" xmlns:edmx="http://docs.oasis-open.org/odata/ns/edmx"> 
    <edmx:DataServices> 
    <Schema Namespace="MyCompany.Api.OData" xmlns="http://docs.oasis-open.org/odata/ns/edm"> 
     <EntityType Name="Position" OpenType="true"> 
     <Key> 
      <PropertyRef Name="Id" /> 
     </Key> 
     <Property Name="Id" Type="Edm.Int32" Nullable="false" /> 
     <Property Name="PositionId" Type="Edm.String" /> 
     <Property Name="Description" Type="Edm.String" /> 
     <Property Name="StartDate" Type="Edm.Date" /> 
     <Property Name="Status" Type="MyCompany.Positions.ValidationStatus" Nullable="false" /> 
     <Property Name="InstrumentTypeId" Type="Edm.Guid" Nullable="false" /> 
     </EntityType> 
     <EntityType Name="Feed"> 
     <Key> 
      <PropertyRef Name="Name" /> 
     </Key> 
     <Property Name="Name" Type="Edm.String" Nullable="false" /> 
     <NavigationProperty Name="Deliveries" Type="Collection(MyCompany.Api.OData.Delivery)" /> 
     </EntityType> 
     <EntityType Name="Delivery"> 
     <Key> 
      <PropertyRef Name="ReferenceDate" /> 
     </Key> 
     <Property Name="ReferenceDate" Type="Edm.DateTimeOffset" Nullable="false" /> 
     <NavigationProperty Name="Positions" Type="Collection(MyCompany.Api.OData.Position)" /> 
     </EntityType> 
    </Schema> 
    <Schema Namespace="MyCompany.Positions" xmlns="http://docs.oasis-open.org/odata/ns/edm"> 
     <EnumType Name="ValidationStatus"> 
     <Member Name="Invalid" Value="0" /> 
     <Member Name="Valid" Value="1" /> 
     <Member Name="Expired" Value="2" /> 
     </EnumType> 
    </Schema> 
    <Schema Namespace="Default" xmlns="http://docs.oasis-open.org/odata/ns/edm"> 
     <EntityContainer Name="Container"> 
     <EntitySet Name="Positions" EntityType="MyCompany.Api.OData.Position" /> 
     <EntitySet Name="Feeds" EntityType="MyCompany.Api.OData.Feed"> 
      <NavigationPropertyBinding Path="Deliveries" Target="Deliveries" /> 
     </EntitySet> 
     <EntitySet Name="Deliveries" EntityType="MyCompany.Api.OData.Delivery"> 
      <NavigationPropertyBinding Path="Positions" Target="Positions" /> 
     </EntitySet> 
     </EntityContainer> 
    </Schema> 
    </edmx:DataServices> 
</edmx:Edmx> 

編輯

下選項，使在電源查詢絲帶診斷後，我看到下面的警告：

DataMashup.Trace Warning: 24579 : {"Start":"2015-05-26T18:26:53.5539195Z","Action":"Engine/IO/OData/Create","ServiceUri":"http://localhost:54026/.../odata/v4","RequestUrl":"http://localhost:54026/.../odata/v4","RequestHeaders":"null","Exception":"Exception:\r\nExceptionType: Microsoft.Mashup.Engine1.Runtime.ValueException, Microsoft.Mashup.Engine.1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35\r\nMessage: [DataSource.Error] OData: The feed's metadata document appears to be invalid.\r\nStackTrace:\n at Microsoft.Mashup.Engine1.Library.OData.EdmModelProcessorBase`1.Build()\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.ODataEnvironment.Create(ServiceDocumentWrapper serviceDoc, Uri metadataUri, Value headers, String resourceKind, ResourceCredentialCollection credentials, IEngineHost host, ODataSettings settings, ODataUserSettings userSettings, Boolean useCachedCredentials)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.ODataResponse.Create(Uri requestUri, HttpResponseData responseData, String resourceKind, Value headers, ResourceCredentialCollection credentials, IEngineHost host, ODataSettings settings, ODataUserSettings userSettings)\r\n at Microsoft.Mashup.Engine1.Library.OData.ODataModule.GetFeed(String resourceKind, TextValue serviceUriValue, TextValue uriValue, Value headers, IEngineHost host, ResourceCredentialCollection credentials, ODataSettingsBase settings, ODataUserSettings userSettings, Boolean useCachedCredentials)\r\n\r\nInnerException\r\nException:\r\nExceptionType: System.InvalidOperationException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089\r\nMessage: Operation is not valid due to the current state of the object.\r\nStackTrace:\n at Microsoft.Mashup.Engine1.Library.OData.V4.ODataTypeServices.GetTypeValueFromEdm(EdmPrimitiveTypeKind typeKind)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.GetTypeValue(IEdmType type)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.GetOrCreateTypeValue(Stack`1 processingTypes, IEdmType type)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.GetOrCreatePropertyTypeValue(Stack`1 processingTypes, IEdmProperty property)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.CreateRecordTypeValue(Stack`1 processingTypes, IEdmStructuredType type)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.GetOrCreateTypeValue(Stack`1 processingTypes, IEdmType type)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.ProcessTypes()\r\n at Microsoft.Mashup.Engine1.Library.OData.EdmModelProcessorBase`1.Build()\r\n\r\n\r\n\r\n\r\n","ProductVersion":"2.22.4007.242 (Release-V2-Public)","ActivityId":"22edde60-34b3-49eb-8dda-75507d00be29","Process":"Microsoft.Mashup.Container.NetFX40","Pid":6244,"Tid":1,"Duration":"00:00:00.2893059"} 
DataMashup.Trace Warning: 24579 : {"Start":"2015-05-26T18:26:53.8596010Z","Action":"SimpleDocumentEvaluator/BeginGetResult<IPreviewValueSource>/callback","Exception":"Exception:\r\nExceptionType: Microsoft.Mashup.Engine1.Runtime.ValueException, Microsoft.Mashup.Engine.1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35\r\nMessage: [DataSource.Error] OData: The feed's metadata document appears to be invalid.\r\nStackTrace:\n at Microsoft.Mashup.Evaluator.Interface.EvaluationResult2`1.get_Result()\r\n at Microsoft.Mashup.Evaluator.SimpleDocumentEvaluator.<>c__DisplayClass1.<BeginGetResult>b__0(EvaluationResult2`1 result)\r\n\r\nInnerException\r\nException:\r\nExceptionType: System.InvalidOperationException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089\r\nMessage: Operation is not valid due to the current state of the object.\r\nStackTrace:\n at Microsoft.Mashup.Engine1.Library.OData.V4.ODataTypeServices.GetTypeValueFromEdm(EdmPrimitiveTypeKind typeKind)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.GetTypeValue(IEdmType type)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.GetOrCreateTypeValue(Stack`1 processingTypes, IEdmType type)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.GetOrCreatePropertyTypeValue(Stack`1 processingTypes, IEdmProperty property)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.CreateRecordTypeValue(Stack`1 processingTypes, IEdmStructuredType type)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.GetOrCreateTypeValue(Stack`1 processingTypes, IEdmType type)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.EdmModelProcessor.ProcessTypes()\r\n at Microsoft.Mashup.Engine1.Library.OData.EdmModelProcessorBase`1.Build()\r\n\r\n\r\n\r\n\r\n","ProductVersion":"2.22.4007.242 (Release-V2-Public)","ActivityId":"22edde60-34b3-49eb-8dda-75507d00be29","Process":"Microsoft.Mashup.Container.NetFX40","Pid":6244,"Tid":1,"Duration":"00:00:00.0040547"} 
DataMashup.Trace Warning: 24579 : {"Start":"2015-05-26T18:26:53.2420994Z","Action":"SimpleDocumentEvaluator/BeginGetResult<IValue>","Exception":"Exception:\r\nExceptionType: Microsoft.Mashup.Engine1.Runtime.ValueException, Microsoft.Mashup.Engine.1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35\r\nMessage: [DataSource.Error] OData: The feed's metadata document appears to be invalid.\r\nStackTrace:\n at Microsoft.Mashup.Engine1.Library.OData.EdmModelProcessorBase`1.Build()\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.ODataEnvironment.Create(ServiceDocumentWrapper serviceDoc, Uri metadataUri, Value headers, String resourceKind, ResourceCredentialCollection credentials, IEngineHost host, ODataSettings settings, ODataUserSettings userSettings, Boolean useCachedCredentials)\r\n at Microsoft.Mashup.Engine1.Library.OData.V4.ODataResponse.Create(Uri requestUri, HttpResponseData responseData, String resourceKind, Value headers, ResourceCredentialCollection credentials, IEngineHost host, ODataSettings settings, ODataUserSettings userSettings)\r\n at Microsoft.Mashup.Engine1.Library.OData.ODataModule.GetFeed(String resourceKind, TextValue serviceUriValue, TextValue uriValue, Value headers, IEngineHost host, ResourceCredentialCollection credentials, ODataSettingsBase settings, ODataUserSettings userSettings, Boolean useCachedCredentials)\r\n at Microsoft.Mashup.Engine1.Library.OData.ODataModule.GetFeed(String resourceKind, TextValue serviceUri, Value headers, Value options, IEngineHost host, Boolean isPrivileged)\r\n at Microsoft.Mashup.Engine1.Library.OData.ODataModule.FeedFunctionValue.TypedInvoke(TextValue serviceUri, Value headers, Value options)\r\n at Microsoft.Mashup.Engine1.Runtime.NativeFunctionValue3`4.Invoke(Value arg0, Value arg1, Value arg2)\r\n at Microsoft.Mashup.Engine1.Runtime.NativeFunctionValue3`4.Invoke(Value arg0)\r\n at Microsoft.Mashup.Engine1.Runtime.FunctionValue.MetaTypeFunctionValue.Invoke(Value arg0)\r\n at Microsoft.Mashup.Engine1.Runtime.SerializationApplyingModule.SerializableFunctionValue.Invoke(Value arg0)\r\n at Microsoft.Mashup.Engine1.Language.FunctionInvocationExpression1.Execute(Value frame)\r\n at Microsoft.Mashup.Engine1.Language.DebugExpression.Execute(Value frame)\r\n at Microsoft.Mashup.Engine1.Language.FunctionInvocationExpression2.Execute(Value frame)\r\n at Microsoft.Mashup.Engine1.Language.DebugExpression.Execute(Value frame)\r\n at Microsoft.Mashup.Engine1.Language.RuntimeFunctionValue1.Invoke(Value arg0)\r\n at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.Force(Int32 index)\r\n at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.get_Item(Int32 index)\r\n at Microsoft.Mashup.Engine1.Runtime.RecordValue.get_Item(String field)\r\n at Microsoft.Mashup.Engine1.Language.FieldAccessExpression.Execute(Value frame)\r\n at Microsoft.Mashup.Engine1.Language.RuntimeFunctionValue1.Invoke(Value arg0)\r\n at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.Force(Int32 index)\r\n at Microsoft.Mashup.Engine1.Language.RecordExpression.RuntimeRecordValue.get_Item(Int32 index)\r\n at Microsoft.Mashup.Engine1.Runtime.RecordValue.get_Item(Value key)\r\n at Microsoft.Mashup.Engine1.Runtime.Library.Linker.BindFunctionValue.TypedInvoke(RecordValue environment, Value section, TextValue name)\r\n at Microsoft.Mashup.Engine1.Runtime.NativeFunctionValue3`4.Invoke(Value arg0, Value arg1, Value arg2)\r\n at Microsoft.Mashup.Engine1.Runtime.FunctionValue.Invoke(Value[] args)\r\n at Microsoft.Mashup.Engine1.Language.ExpressionInvocationExpression.Execute(MembersFrame0& frame)\r\n at Microsoft.Mashup.Engine1.Language.MembersFunctionValue0.Invoke()\r\n at Microsoft.Mashup.Engine1.Language.ListExpression.RuntimeListValue.Force(Int32 index)\r\n at Microsoft.Mashup.Engine1.Language.ListExpression.RuntimeListValue.get_Item(Int32 index)\r\n at Microsoft.Mashup.Engine1.Runtime.ListValue.get_Item(Value key)\r\n at Microsoft.Mashup.Engine1.Runtime.Library.List.ElementWithListCheckFunctionValue.Invoke(Value collection, Value key)\r\n at Microsoft.Mashup.Engine1.Language.FunctionInvocationExpression2.Execute(MembersFrame1& frame)\r\n at Microsoft.Mashup.Engine1.Language.MembersFunctionV","ProductVersion":"2.22.4007.242 (Release-V2-Public)","ActivityId":"22edde60-34b3-49eb-8dda-75507d00be29","Process":"Microsoft.Mashup.Container.NetFX40","Pid":6244,"Tid":1,"Duration":"00:00:00.6215902"} 

不幸的是，我沒有看到任何特定於我們的OData API的錯誤。

Answer 1

您可以與我們分享服務網址嗎？如果它是公開的並且沒有敏感數據:)。你也可以嘗試在瀏覽器中加載元數據文檔，它是否正確加載沒有錯誤？ 如果它在瀏覽器中有效，那麼我們需要一個服務url來重現問題或提琴手痕跡。

感謝， Hadeel

Answer 2

你可以嘗試使用最近已被更新，以支持的OData V4的OData的驗證服務：

http://services.odata.org/validation/#

事實上它顯示了元數據文件一個錯誤你提供了，但這可能會或可能不會成爲PowerQuery失敗的問題。 今天，我用我自己的OData（v4）服務測試了新的PowerQuery版本，但是我沒有使用Web API集成，直接使用ODataLib/Microsoft.OData.Core。