实现IErrorHandler时出错-无法添加行为扩展

这是我的代码和配置文件: ErrorhandlerExtension.cs: using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.ServiceModel.Configuration;using System.Configuration;using System.ServiceModel;using System.ServiceModel.Channels;using System.ServiceModel.Description;using System.ServiceModel.Dispatcher;using System.Collections.ObjectModel;namespace Test.TestService{class ErrorHandlerExtension:BehaviorExtensionElement,IServiceBehavior{ public override Type BehaviorType { get { return typeof(ErrorHandler); } } protected override object CreateBehavior() { return new ErrorHandler(); } void IServiceBehavior.AddBindingParameters(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase, Collection<ServiceEndpoint> endpoints, BindingParameterCollection bindingParameters) { } private IErrorHandler GetInstance() { return new ErrorHandler(); } void IServiceBehavior.ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase) { IErrorHandler errorHandlerInstance = GetInstance(); foreach (ChannelDispatcher dispatcher in serviceHostBase.ChannelDispatchers) { dispatcher.ErrorHandlers.Add(errorHandlerInstance); } } void IServiceBehavior.Validate(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase) { foreach (ServiceEndpoint endpoint in serviceDescription.Endpoints) { if (endpoint.Contract.Name.Equals("IMetadataExchange") && endpoint.Contract.Namespace.Equals("http://schemas.microsoft.com/2006/04/mex")) continue; foreach (OperationDescription description in endpoint.Contract.Operations) { if (description.Faults.Count == 0) { throw new InvalidOperationException("FaultContractAttribute not found on this method"); } } } }}} web.config: <system.serviceModel> <extensions> <behaviorExtensions> <add name="errorHandlerExtension" type="Test.TestService.ErrorHandlerExtension, Test.TestService, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" /> </behaviorExtensions> </extensions> <behaviors> <serviceBehaviors> <behavior name="Test.TestService.Service1Behavior"> <serviceMetadata httpGetEnabled="true" /> <serviceDebug includeExceptionDetailInFaults="true" /> <errorHandlerExtension /> </behavior> </serviceBehaviors> </behaviors></system.serviceModel>每当我删除errorHandlerExtension/元素时，该服务就可以正常工作，但是只要我包含errorHandlerExtension元素(带有错误)，该服务就无法启动.我是WCF的新手，很沮丧.有什么想法吗?添加了 ErrorHandler.cs :using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.ServiceModel;using System.ServiceModel.Channels;using System.ServiceModel.Description;using System.ServiceModel.Dispatcher;using System.Collections.ObjectModel;namespace Test.TestService{public class ErrorHandler:IErrorHandler{ public bool HandleError(Exception error) { LogError("UnhandledError: "+ error); return true; } public void ProvideFault(Exception error, MessageVersion version, ref Message fault) { FaultException faultException = new FaultException("Exception message:ProvideFault"); MessageFault messageFault = faultException.CreateMessageFault(); fault = Message.CreateMessage(version, messageFault, faultException.Action); }}}解决方案就像我上面提到的，在ErrorHandler中实现IServiceBehavior而不是ErrorHandlerExtension可以解决此问题.I was using these two articles as a reference to implement IErrorHandler:ErrorHandler doesn't seem...Roy Primrose's blog post(I'm using .net Framework 3.5.)However, I am having a bit trouble - whenever I try to start the service, I get following error:System.Configuration.ConfigurationErrorsException: Cannot add the behavior extension 'errorHandlerExtension' to the service behavior named 'Test.TestService.Service1Behavior' because the underlying behavior type does not implement the IServiceBehavior interface.Here are my code and config files:ErrorhandlerExtension.cs:using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.ServiceModel.Configuration;using System.Configuration;using System.ServiceModel;using System.ServiceModel.Channels;using System.ServiceModel.Description;using System.ServiceModel.Dispatcher;using System.Collections.ObjectModel;namespace Test.TestService{class ErrorHandlerExtension:BehaviorExtensionElement,IServiceBehavior{ public override Type BehaviorType { get { return typeof(ErrorHandler); } } protected override object CreateBehavior() { return new ErrorHandler(); } void IServiceBehavior.AddBindingParameters(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase, Collection<ServiceEndpoint> endpoints, BindingParameterCollection bindingParameters) { } private IErrorHandler GetInstance() { return new ErrorHandler(); } void IServiceBehavior.ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase) { IErrorHandler errorHandlerInstance = GetInstance(); foreach (ChannelDispatcher dispatcher in serviceHostBase.ChannelDispatchers) { dispatcher.ErrorHandlers.Add(errorHandlerInstance); } } void IServiceBehavior.Validate(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase) { foreach (ServiceEndpoint endpoint in serviceDescription.Endpoints) { if (endpoint.Contract.Name.Equals("IMetadataExchange") && endpoint.Contract.Namespace.Equals("http://schemas.microsoft.com/2006/04/mex")) continue; foreach (OperationDescription description in endpoint.Contract.Operations) { if (description.Faults.Count == 0) { throw new InvalidOperationException("FaultContractAttribute not found on this method"); } } } }}} web.config:<system.serviceModel> <extensions> <behaviorExtensions> <add name="errorHandlerExtension" type="Test.TestService.ErrorHandlerExtension, Test.TestService, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" /> </behaviorExtensions> </extensions> <behaviors> <serviceBehaviors> <behavior name="Test.TestService.Service1Behavior"> <serviceMetadata httpGetEnabled="true" /> <serviceDebug includeExceptionDetailInFaults="true" /> <errorHandlerExtension /> </behavior> </serviceBehaviors> </behaviors></system.serviceModel>Whenever I get rid of the errorHandlerExtension / element, the service works fine, but it fails to start whenever I include errorHandlerExtension element (with the error). I'm new to WCF and quite stumped. Any ideas?edit: added ErrorHandler.cs:using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.ServiceModel;using System.ServiceModel.Channels;using System.ServiceModel.Description;using System.ServiceModel.Dispatcher;using System.Collections.ObjectModel;namespace Test.TestService{public class ErrorHandler:IErrorHandler{ public bool HandleError(Exception error) { LogError("UnhandledError: "+ error); return true; } public void ProvideFault(Exception error, MessageVersion version, ref Message fault) { FaultException faultException = new FaultException("Exception message:ProvideFault"); MessageFault messageFault = faultException.CreateMessageFault(); fault = Message.CreateMessage(version, messageFault, faultException.Action); }}} 解决方案 Like I stated above, Implementing the IServiceBehavior in the ErrorHandler instead of ErrorHandlerExtension solved this problem. 这篇关于实现IErrorHandler时出错-无法添加行为扩展的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！