2

我需要所有 3 个项目都在正文中,以便客户端可以使用它们,他不能修改 Header 中的数据(前 2 个在MessageHeader第一个中):

[MessageContract]
public class UploadRequest
{
    [MessageBodyMember(Order = 2)]
    public string FileName { get; set; }

    [MessageBodyMember(Order = 1)]
    public Guid itemId { get; set; }

    [MessageBodyMember(Order = 3)]
    public Stream Stream { get; set; }
}

我收到的错误是:

System.InvalidOperationException: In order to use Streams with the MessageContract programming model, the type UploadRequest must have a single member with MessageBodyMember attribute and the member type must be Stream.
            at System.ServiceModel.Dispatcher.StreamFormatter.ValidateAndGetStreamPart(MessageDescription messageDescription, Boolean isRequest, String operationName)
            at System.ServiceModel.Dispatcher.OperationFormatter..ctor(OperationDescription description, Boolean isRpc, Boolean isEncoded)
            at System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter..ctor(OperationDescription description, DataContractFormatAttribute dataContractFormatAttribute, DataContractSerializerOperationBehavior serializerFactory)
            at System.ServiceModel.Description.DataContractSerializerOperationBehavior.GetFormatter(OperationDescription operation, Boolean& formatRequest, Boolean& formatReply, Boolean isProxy)
            at System.ServiceModel.Description.DataContractSerializerOperationBehavior.System.ServiceModel.Description.IOperationBehavior.ApplyDispatchBehavior(OperationDescription description, DispatchOperation dispatch)
            at System.ServiceModel.Description.DispatcherBuilder.BindOperations(ContractDescription contract, ClientRuntime proxy, DispatchRuntime dispatch)
            at System.ServiceModel.Description.DispatcherBuilder.InitializeServiceHost(ServiceDescription description, ServiceHostBase serviceHost)
            at System.ServiceModel.ServiceHostBase.InitializeRuntime()
            at System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout)
            at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
            at Microsoft.Tools.SvcHost.ServiceHostHelper.OpenService(ServiceInfo info)

我该如何解决?

4

1 回答 1

1

如果您的一个属性是流,则您只能拥有另一个属性 Header。然后就可以将 FileName 和 itemId 存储在 header 中传入。

于 2015-12-15T21:02:48.557 回答