BizTalk和WCF服務：無法找到類System Diagnostics.TextWriterTraceListener的類型？

Question

我創建了一個簡單的業務流程來調用WCF服務並從中獲取響應。 Web服務的方法很簡單：

string GetSimple(int value)

的BizTalk監視的文件夾，並使用文件適配器從那裏收到激活郵件，然後構造適當的消息並調用Web服務。但沒有與此異常：

 
Error Description: System.Configuration.ConfigurationErrorsException: Couldn't find type for class System Diagnostics.TextWriterTraceListener. 

Server stack trace: 
    at System.Diagnostics.TraceUtils.GetRuntimeObject(String className, Type baseType, String initializeData) 
    at System.Diagnostics.TypedElement.BaseGetRuntimeObject() 
    at System.Diagnostics.ListenerElement.GetRuntimeObject() 
    at System.Diagnostics.ListenerElement.GetRuntimeObject() 
    at System.Diagnostics.ListenerElementsCollection.GetRuntimeObject() 
    at System.Diagnostics.TraceSource.Initialize() 
    at System.Net.Logging.InitializeLogging() 
    at System.Net.Logging.get_On() 
    at System.Net.WebRequest.Create(Uri requestUri, Boolean useUriBase) 
    at System.Net.WebRequest.Create(Uri requestUri) 
    at System.ServiceModel.Channels.HttpChannelFactory.GetWebRequest(EndpointAddress to, Uri via, NetworkCredential credential, TokenImpersonationLevel impersonationLevel, AuthenticationLevel authenticationLevel, SecurityTokenProviderContainer proxyTokenProvider, SecurityTokenContainer clientCertificateToken, TimeSpan timeout) 
    at System.ServiceModel.Channels.HttpChannelFactory.GetWebRequest(EndpointAddress to, Uri via, SecurityTokenProviderContainer tokenProvider, SecurityTokenProviderContainer proxyTokenProvider, SecurityTokenContainer clientCertificateToken, TimeSpan timeout) 
    at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.GetWebRequest(EndpointAddress to, Uri via, SecurityTokenContainer clientCertificateToken, TimeoutHelper& timeoutHelper) 
    at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.GetWebRequest(EndpointAddress to, Uri via, TimeoutHelper& timeoutHelper) 
    at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelAsyncRequest.BeginSendRequest(Message message, TimeSpan timeout) 
    at System.ServiceModel.Channels.RequestChannel.BeginRequest(Message message, TimeSpan timeout, AsyncCallback callback, Object state) 
    at System.ServiceModel.Dispatcher.RequestChannelBinder.BeginRequest(Message message, TimeSpan timeout, AsyncCallback callback, Object state) 
    at System.ServiceModel.Channels.ServiceChannel.SendAsyncResult.StartSend(Boolean completedSynchronously) 
    at System.ServiceModel.Channels.ServiceChannel.SendAsyncResult.Begin() 
    at System.ServiceModel.Channels.ServiceChannel.BeginCall(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, TimeSpan timeout, AsyncCallback callback, Object asyncState) 
    at System.ServiceModel.Channels.ServiceChannel.BeginRequest(Message message, TimeSpan timeout, AsyncCallback callback, Object state) 
    at System.ServiceModel.Channels.ServiceChannel.BeginRequest(Message message, AsyncCallback callback, Object state) 

Exception rethrown at [0]: 
    at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) 
    at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) 
    at System.ServiceModel.Channels.IRequestChannel.BeginRequest(Message message, AsyncCallback callback, Object state) 
    at Microsoft.BizTalk.Adapter.Wcf.Runtime.WcfClient`2.SendRequestMessage(IBaseMessage bizTalkMessage, IRequestChannel channel) 
    at Microsoft.BizTalk.Adapter.Wcf.Runtime.WcfClient`2.SendMessage(IBaseMessage bizTalkMessage) 


Exception type: XlangSoapException 
Source: Microsoft.XLANGs.BizTalk.Engine 
Target Site: Void VerifyTransport(Microsoft.XLANGs.Core.Envelope, Int32, Microsoft.XLANGs.Core.Context) 
The following is a stack trace that identifies the location where the exception occured 

    at Microsoft.BizTalk.XLANGs.BTXEngine.BTXPortBase.VerifyTransport(Envelope env, Int32 operationId, Context ctx) 
    at Microsoft.XLANGs.Core.Subscription.Receive(Segment s, Context ctx, Envelope& env, Boolean topOnly) 
    at Microsoft.XLANGs.Core.PortBase.GetMessageId(Subscription subscription, Segment currentSegment, Context cxt, Envelope& env, CachedObject location) 
    at Orch.Orc.segment1(StopConditions stopOn) 
    at Microsoft.XLANGs.Core.SegmentScheduler.RunASegment(Segment s, StopConditions stopCond, Exception& exp) 
    

我找不到TextWriterTraceListener。它在哪裏？如何擺脫這種異常？

Answer 1

看起來WCF服務或BTSNtSvc.exe.config的配置文件存在問題。 BizTalk似乎在發送正確的請求。

最有可能的情況是，有關WCF日誌消息的配置存在問題或者BTSNtSvc.exe.config在日誌記錄時出現錯誤的參數。

您可能需要從標準.net客戶端調用服務來縮小問題的範圍。

HTH