抛出 IOperationBehavior 中使用的新 WebFaultException 不起作用

Question

我在扩展属性、IOperationBehavior、IParameterInspector 时抛出 WebFaultException，但它不起作用。

public class ApplicationNotSupportedAttribute : Attribute, IOperationBehavior, IParameterInspector
    {

        private readonly ApplicationNotSupportedBehaviour behaviour;

        public ApplicationNotSupportedAttribute()
        {
            Logging<string>.Error("ApplicationNotSupportedAttribute");
            behaviour = new ApplicationNotSupportedBehaviour();
        }

        public void AddBindingParameters(OperationDescription operationDescription, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)
        {
            behaviour.AddBindingParameters(operationDescription, bindingParameters);
        }

        public void ApplyClientBehavior(OperationDescription operationDescription, System.ServiceModel.Dispatcher.ClientOperation clientOperation)
        {
            behaviour.ApplyClientBehavior(operationDescription, clientOperation);
        }

        public void ApplyDispatchBehavior(OperationDescription operationDescription, System.ServiceModel.Dispatcher.DispatchOperation dispatchOperation)
        {
            behaviour.ApplyDispatchBehavior(operationDescription, dispatchOperation);
        }

        public void Validate(OperationDescription operationDescription)
        {
            behaviour.Validate(operationDescription);
        }

        public object BeforeCall(string operationName, object[] inputs)
        {
            throw new WebFaultException(HttpStatusCode.Forbidden);
        }
        public void AfterCall(string operationName, object[] outputs,
                           object returnValue, object correlationState)
        {
        }

然后我在服务中有：

[WebInvoke(Method = "POST", UriTemplate = "myMethod", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
        [OperationContract]
        [ApplicationNotSupportedAttribute]
        myMethodResult myMethod(MyMethodRequest myMethodRequest);

在我运行上面的代码之后，我得到 200 Ok。如果我添加

  throw new WebFaultException(HttpStatusCode.Forbidden);

在 myMethod 中我得到 403 Forbidden。如以下代码所示：

public myMethodResult myMethod(MyMethodRequest myMethodRequest)
        {
            throw new WebFaultException<myObject>(myObj, HttpStatusCode.Forbidden);
        }

有没有可能在我们真正进入 myMethod 之前得到 403？

Answer 1

我在 class ApplicationNotSupportedAttribute 中发现了问题，除了 BeforeCall 和 ApplyDispatchBehavior 外，所有被覆盖的方法都可能是空的，它们应该如下所示：

public void ApplyDispatchBehavior(OperationDescription operationDescription, DispatchOperation dispatchOperation)
        {
            dispatchOperation.ParameterInspectors.Add(this);
        }

        public object BeforeCall(string operationName, object[] inputs)
        {
            WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.Forbidden;
            throw new WebFaultException<string>("Unauthorized", HttpStatusCode.Forbidden);
        }

我好像错过了 dispatchOperation.ParameterInspectors.Add(this)。这解决了我的问题。

抛出 IOperationBehavior 中使用的新 WebFaultException 不起作用

Throw new WebFaultException used in IOperationBehavior does not work

c#

wcf

http-status-code-403