C# 使用POST的WCF Web服务。名称空间错误？

我有一个RESTful服务，其界面如下，使用POST。 当我尝试转到服务URL时，我得到一个服务器错误，说有名称空间冲突，但我认为情况并非如此。下面是错误消息的缩短版本

System.InvalidOperationException: DataContract for type 'xyz.EntityList`1[zxc]' cannot be added to DataContractSet since type 'xyz.EntityList`1[zxc]' with the same data contract name 'EntityList' in namespace 'Bugg' is already present and the contracts are not equivalent.

下面给出了错误的其余部分

namespace MyComp.RestApi.Interfaces
{
    [ServiceContract]
    public interface ISiteService
    {
        [OperationContract]
        [WebInvoke(Method = "POST", UriTemplate = "Sites/{customerId}/Organizations/", 
            BodyStyle = WebMessageBodyStyle.Bare,
            RequestFormat = WebMessageFormat.Xml,
            ResponseFormat = WebMessageFormat.Xml)]
        EntityList<Organization> GetOrganizationsById(string customerId, string ids);
    }
}

web配置的摘录：

<services>
<service behaviorConfiguration="MyComp.RestApi.Services.SiteServiceBehavior"
                name="MyComp.RestApi.Services.SiteService">
                <endpoint behaviorConfiguration="webHttp" binding="webHttpBinding"
                    contract="MyComp.RestApi.Interfaces.ISiteService" />
                <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
            </service>
</services>
 <behaviors>
            <endpointBehaviors>
                <behavior name="webHttp">
                    <webHttp />
                </behavior>
            </endpointBehaviors>
            <serviceBehaviors>
<behavior name="MyComp.RestApi.Services.SiteServiceBehavior">
                  <serviceMetadata httpGetEnabled="true" />
                    <serviceDebug includeExceptionDetailInFaults="true" />
                </behavior>

</serviceBehaviors>
</behaviors>

---

从DataContract属性中删除名称。您使用的是通用数据契约，但您给它起的是静态名称。这是不可能的，因为每个泛型类型参数的协定名称必须不同（自动生成）。这就是你例外的原因

---

还要从配置文件中删除mex端点和服务元数据行为，因为它用于SOAP服务，而不是REST服务

非常感谢！我昨天花了几个小时想弄明白这一点。我是新来的。您在哪里看到我们正在使用通用数据契约？是不是ISiteService接口上的

[ServiceContract]

属性没有设置Name属性？EntityList是泛型类型，但您在不同的泛型类型参数中多次使用了它。啊，从这个意义上说。。。再次感谢你，拉迪斯拉夫！

An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is:
System.InvalidOperationException: An exception was thrown in a call to a WSDL export extension: System.ServiceModel.Description.DataContractSerializerOperationBehavior
 contract: http://tempuri.org/:ISiteService ----> System.InvalidOperationException: DataContract for type 'MyComp.RestApi.Entities.Utils.EntityList`1[[MyComp.RestApi.Entities.Organization, MyComp.RestApi.Entities, Version=1.0.0.0, Culture=neutral, PublicKeyToken=85d7c8ed1eb8be9b]]' cannot be added to DataContractSet since type 'MyComp.RestApi.Entities.Utils.EntityList`1[[MyComp.RestApi.Entities.Site, MyComp.RestApi.Entities, Version=1.0.0.0, Culture=neutral, PublicKeyToken=85d7c8ed1eb8be9b]]' with the same data contract name 'EntityList' in namespace 'Bugg' is already present and the contracts are not equivalent.
   at System.Runtime.Serialization.DataContractSet.Add(XmlQualifiedName name, DataContract dataContract)
   at System.Runtime.Serialization.DataContractSet.Add(Type type)
   at System.Runtime.Serialization.XsdDataContractExporter.Export(Type type)
   at System.ServiceModel.Description.MessageContractExporter.ExportType(Type type, String partName, String operationName, XmlSchemaType& xsdType)
   at System.ServiceModel.Description.DataContractSerializerMessageContractExporter.ExportBody(Int32 messageIndex, Object state)
   at System.ServiceModel.Description.MessageContractExporter.ExportMessage(Int32 messageIndex, Object state)
   at System.ServiceModel.Description.MessageContractExporter.ExportMessageContract()
   at System.ServiceModel.Description.DataContractSerializerOperationBehavior.System.ServiceModel.Description.IWsdlExportExtension.ExportContract(WsdlExporter exporter, WsdlContractConversionContext contractContext)
   at System.ServiceModel.Description.WsdlExporter.CallExtension(WsdlContractConversionContext contractContext, IWsdlExportExtension extension)
   --- End of inner ExceptionDetail stack trace ---
   at System.ServiceModel.Description.WsdlExporter.CallExtension(WsdlContractConversionContext contractContext, IWsdlExportExtension extension)
   at System.ServiceModel.Description.WsdlExporter.CallExportContract(WsdlContractConversionContext contractContext)
   at System.ServiceModel.Description.WsdlExporter.ExportContract(ContractDescription contract)
   at System.ServiceModel.Description.WsdlExporter.ExportEndpoint(ServiceEndpoint endpoint, XmlQualifiedName wsdlServiceQName)
   at System.ServiceModel.Description.WsdlExporter.ExportEndpoints(IEnumerable`1 endpoints, XmlQualifiedName wsdlServiceQName)
   at System.ServiceModel.Description.ServiceMetadataBehavior.MetadataExtensionInitializer.GenerateMetadata()
   at System.ServiceModel.Description.ServiceMetadataExtension.EnsureInitialized()
   at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.InitializationData.InitializeFrom(ServiceMetadataExtension extension)
   at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.GetInitData()
   at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.TryHandleDocumentationRequest(Message httpGetRequest, String[] queries, Message& replyMessage)
   at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.ProcessHttpRequest(Message httpGetRequest)
   at System.ServiceModel.Description.ServiceMetadataExtension.HttpGetImpl.Get(Message message)
   at SyncInvokeGet(Object , Object[] , Object[] )
   at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

<services>
<service behaviorConfiguration="MyComp.RestApi.Services.SiteServiceBehavior"
                name="MyComp.RestApi.Services.SiteService">
                <endpoint behaviorConfiguration="webHttp" binding="webHttpBinding"
                    contract="MyComp.RestApi.Interfaces.ISiteService" />
                <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
            </service>
</services>
 <behaviors>
            <endpointBehaviors>
                <behavior name="webHttp">
                    <webHttp />
                </behavior>
            </endpointBehaviors>
            <serviceBehaviors>
<behavior name="MyComp.RestApi.Services.SiteServiceBehavior">
                  <serviceMetadata httpGetEnabled="true" />
                    <serviceDebug includeExceptionDetailInFaults="true" />
                </behavior>

</serviceBehaviors>
</behaviors>