这是我第一次设置 OData 服务，我当然遇到了一些问题......
问题是我无法让服务运行，我不断收到“请求错误”。
我研究了问题可能是什么，发现一个常见问题是访问规则输入错误。因此，我尝试使用单数名称、复数名称来解决此问题，并且我也尝试使用typeof(Post).getType().Name
那么这是我的代码。我希望你能帮助我，我已经被困了好几个小时了。
public class ODataService : DataService<Entity>
{
// This method is called only once to initialize service-wide policies.
public static void InitializeService( DataServiceConfiguration config )
{
//config.SetEntitySetAccessRule( "Users", EntitySetRights.All );
//config.SetEntitySetAccessRule( "Posts", EntitySetRights.All );
//config.SetEntitySetAccessRule( "Albums", EntitySetRights.All );
config.SetEntitySetAccessRule( "*", EntitySetRights.AllRead );
config.SetServiceOperationAccessRule( "*", ServiceOperationRights.AllRead );
//config.SetServiceOperationAccessRule( "GetPosts", ServiceOperationRights.AllRead );
config.UseVerboseErrors = true;
config.DataServiceBehavior.MaxProtocolVersion = DataServiceProtocolVersion.V2;
}
[WebGet]
public IQueryable<Post> GetPosts()
{
return CurrentDataSource.Posts.AsQueryable();
}
}
我的 EntityFramework 类的结构（db first）
实体类的方法和成员。这里的实体以复数形式拼写。
这是我的 Web.config：
<?xml version="1.0"?>
<!--
For more information on how to configure your ASP.NET application, please visit
http://go.microsoft.com/fwlink/?LinkId=169433
-->
<configuration>
<connectionStrings>
<add name="Entity" connectionString="metadata=res://*/;provider=System.Data.SqlClient;provider connection string="data source=XXX;Initial Catalog=XXX;persist security info=True;user id=XXX;password=XXX;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
</connectionStrings>
<appSettings>
<add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
<add key="ValidationSettings:UnobtrusiveValidationMode" value="WebForms" />
</appSettings>
<system.web>
<compilation debug="true" targetFramework="4.5" />
<httpRuntime requestValidationMode="4.5" targetFramework="4.5" encoderType="System.Web.Security.AntiXss.AntiXssEncoder, System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
<pages controlRenderingCompatibilityVersion="4.5" />
<machineKey compatibilityMode="Framework45" />
</system.web>
<system.serviceModel>
<services>
<service name="LinkIT.Core.OData.ODataService" behaviorConfiguration ="DebugEnabled">
</service>
</services>
<behaviors>
<serviceBehaviors >
<behavior name="DebugEnabled">
<serviceDebug includeExceptionDetailInFaults="True"/>
</behavior>
</serviceBehaviors>
</behaviors>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
</system.serviceModel>
</configuration>
详细的错误信息：
服务器在处理请求时遇到错误。异常消息是“值不能为空。参数名称：propertyResourceType'。有关更多详细信息，请参阅服务器日志。异常堆栈跟踪是：
在 System.Data.Services.WebUtil.CheckArgumentNull[T](T value, String parameterName) 在 System.Data.Services.Providers.ResourceProperty..ctor(String name, ResourcePropertyKind kind, ResourceType propertyResourceType) 在 System.Data.Services。 Providers.ObjectContextServiceProvider.PopulateMemberMetadata(ResourceType resourceType, IProviderMetadata workspace, IDictionary
2 knownTypes, PrimitiveResourceTypeMap primitiveResourceTypeMap) at System.Data.Services.Providers.ObjectContextServiceProvider.PopulateMetadata(IDictionary2 knownTypes, IDictionary2 childTypes, IDictionary2 entitySets) 在 System.Data.Services.Providers.BaseServiceProvider.PopulateMetadata() 在 System.Data.Services.Providers.BaseServiceProvider.LoadMetadata() 在 System .Data.Services.DataService 1.CreateProvider1.CreateMetadataAndQueryProviders(IDataServiceMetadataProvider& metadataProviderInstance, IDataServiceQueryProvider& queryProviderInstance, BaseServiceProvider& builtInProvider, Object& dataSourceInstance) at System.Data.Services.DataService() 在 System.Data.Services.DataService1.HandleRequest() at System.Data.Services.DataService1.ProcessRequestForMessage(Stream messageBody) at SyncInvokeProcessRequestForMessage(Object , Object[] , Object[] ) at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[] & outputs) 在 System.ServiceModel。 Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) 在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc) 在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& rpc) 在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc) ) 在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc) 在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc) 在系统。ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc) 在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc) 在 System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc) 在 System.ServiceModel.Dispatcher.MessageRpc.Process(布尔 isOperationContextSet)