Question

为什么我不能在Visual Studio中将“添加服务引用”添加到此odata端点：

<edmx:Edmx xmlns:edmx="http://schemas.microsoft.com/ado/2009/11/edmx" Version="3.0">
    <edmx:DataServices xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" m:DataServiceVersion="3.0">
       <Schema xmlns="http://schemas.microsoft.com/ado/2009/11/edm" Namespace="nsuli_com">
          <EntityType Name="EntityType0">
          <Key>
             <PropertyRef Name="DateS"/>
          </Key>
          <Property Name="DateS" Type="Edm.DateTime" Nullable="false"/>
          </EntityType>
          <EntityContainer Name="us">
             <EntitySet Name="ImportedSeries_NFPDates" EntityType="nsuli_com.EntityType0"/>
          </EntityContainer>
      </Schema>
   </edmx:DataServices>

它使用驱动程序“WCF Data Services 5.5（OData 3）”从LINQPad 4开始工作......但“添加服务引用...”显示错误：

There was an error downloading 'http://nsuli.com/odata/us/_vti_bin/ListData.svc/$metadata'.
The request failed with HTTP status 404: Not Found.
Metadata contains a reference that cannot be resolved: 'http://nsuli.com/odata/us/'.
The content type application/xml;charset=utf-8 of the response message does not match the content type of the binding (application/soap+xml; charset=utf-8). If using a custom encoder, be sure that the IsContentTypeSupported method is implemented properly. The first 354 bytes of the response were: '<?xml version="1.0" encoding="utf-8"?><service xml:base="http://nsuli.com/odata/us/" xmlns="http://www.w3.org/2007/app" xmlns:atom="http://www.w3.org/2005/Atom"><workspace><atom:title type="text">Default</atom:title><collection href="ImportedSeries_NFPDates"><atom:title type="text">ImportedSeries_NFPDates</atom:title></collection></workspace></service>'.
If the service is defined in the current solution, try building the solution and adding the service reference again.

Answer 1

应该是元数据格式问题。以下服务可用于＆＃34;添加服务参考＆＃34;。如果您可以更改服务端代码，则可以将其用作演示。 http://services.odata.org/V3/OData/OData.svc/ $元数据

另一方面，OData现在可以使用T4生成客户端代码。你可以参考以下博客： http://blogs.msdn.com/b/odatateam/archive/2014/03/11/how-to-use-odata-client-code-generator-to-generate-client-side-proxy-class.aspx

Answer 2

如果我这样做

metadata = metadata.Replace(
    "xmlns:edmx=\"schemas.microsoft.com/ado/2009/11/edmx\"",
    "xmlns:edmx=\"schemas.microsoft.com/ado/2007/06/edmx\""
)

在我的元数据文档中，然后＆＃34;添加服务参考＆＃34;工作得很好............

＆＃34;添加服务参考...＆＃34;对于OData feed ...在Visual Studio中不起作用

2 个答案: