客户端不会捕获通用的FaultException< T >，只有FaultException
客户端不会捕获通用的FaultException< T >，只有FaultException
提问于 2011-07-05 20:13:29
我已经阅读了所有关于这方面的内容，但也许我遗漏了一些东西(嗯，我肯定错过了一些东西，否则它已经开始工作了)
我在服务器业务层中抛出一些异常错误：
public class RfcException : Exception
{
public RfcException(string _m, Exception _inner) : base(_m, _inner)
{ }
public Dictionary<string, string> ExtendedProperties
{
get { return extendedProperties; }
protected set { extendedProperties = value; }
}
private Dictionary<string, string> extendedProperties = new Dictionary<string, string>();
}，但我有一个IErrorHandler要捕获并创建一个FaultMessage。
public class FaultErrorHandler : BehaviorExtensionElement, IErrorHandler, IServiceBehavior
{
public bool HandleError(Exception error)
{
if (!Logger.IsLoggingEnabled()) return true;
var logEntry = new LogEntry
{
EventId = 100,
Severity = TraceEventType.Error,
Priority = 1,
Title = "WCF Failure",
Message = string.Format("Error occurred: {0}", error)
};
logEntry.Categories.Add("MiddleTier");
Logger.Write(logEntry);
return true;
}
public void ProvideFault(Exception error, System.ServiceModel.Channels.MessageVersion version, ref System.ServiceModel.Channels.Message fault)
{
if (error is RfcException)
{
RfcException rfcException = error as RfcException;
var serviceFault = new RfcServiceFault(rfcException);
var faultException = new FaultException<RfcServiceFault>(serviceFault, new FaultReason(string.Format("System error occurred, exception: {0}", error)));
var faultMessage = faultException.CreateMessageFault();
fault = Message.CreateMessage(version, faultMessage, Schema.WebServiceStandard);
}
else
{
var faultException = new FaultException<Exception>(error, new FaultReason(string.Format("System error occurred, exception: {0}", error)));
var faultMessage = faultException.CreateMessageFault();
fault = Message.CreateMessage(version, faultMessage, Schema.WebServiceStandard);
}
}
public void AddBindingParameters(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase, System.Collections.ObjectModel.Collection<ServiceEndpoint> endpoints, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)
{ }
public void ApplyDispatchBehavior(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase)
{
foreach (ChannelDispatcher chanDisp in serviceHostBase.ChannelDispatchers)
{
chanDisp.ErrorHandlers.Add(this);
};
}
public void Validate(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase)
{ }
public override Type BehaviorType
{
get { return typeof(FaultErrorHandler); }
}
protected override object CreateBehavior()
{
return new FaultErrorHandler();
}
}不需要问；我已经向调试器确认了它在部件if (error is RfcException)部分中的输入，我已经逐步完成了该代码，并且一直到结束，没有任何麻烦。errorHandler包装一条FaultException<RfcServiceFault>消息，RfcServiceFault消息如下
[DataContract(Name = "RfcServiceFault", Namespace = "Service.DataTransfer.Rfc")]
public class RfcServiceFault
{
public RfcServiceFault(RfcException rfcException) : this( (Exception)rfcException )
{
ExtendedProperties = new Dictionary<string, string>(rfcException.ExtendedProperties);
}
public RfcServiceFault()
{ }
public RfcServiceFault(Exception regularException)
{
FaultMessage = regularException.Message;
StackTrace = regularException.StackTrace;
}
public Dictionary<string, string> ExtendedProperties
{
get { return extendedProperties; }
protected set { extendedProperties = value; }
}
[DataMember]
private Dictionary<string, string> extendedProperties = new Dictionary<string, string>();
[DataMember]
public string FaultMessage { get; set; }
[DataMember]
public string StackTrace { get; set; }
}该服务拥有所有应该具有faultContract的wcf服务的注释：
[ServiceContract(Name = "MyService", Namespace = Schema.WebServiceStandard, SessionMode = SessionMode.Allowed)]
public interface IMyService
{
[OperationContract(Name = "GetStuff")]
[FaultContract(typeof(RfcServiceFault) , Name="RfcServiceFault", Namespace="Service.DataTransfer.Rfc")]
LookupResult GetStuff();
}Now:客户机上的测试，一个简单的测试，如下所示：
try
{
var result = myService.GetStuff();
Assert.IsTrue(!string.IsNullOrEmpty(result));
}
catch (FaultException<RfcServiceFault> rfcEx)
{
// OMG FOR THE LIFE OF THE PUPPIES ENTER HERE
}
catch (FaultException rr)
{
// it always falls in here
}
catch (Exception ex)
{ }我读过很多关于这个类似问题的文章：
- Cannot handle FaultException
- Throwing generic FaultException
- c# WCF catch Fault Exceptions of Base type
- WCF: WSDL-first approach: Problems with generating fault types
但是到目前为止似乎没有任何帮助，我尝试在web.config中设置WCF跟踪：
<system.diagnostics>
<sources>
<source name="System.ServiceModel"
switchValue="Information, ActivityTracing">
<listeners>
<add name="log"
type="System.Diagnostics.XmlWriterTraceListener"
initializeData="c:\Traces.svclog" />
</listeners>
</source>
</sources>
</system.diagnostics>我在那里得到一个svclog文件，我用WCF跟踪查看器打开，但我只看到一堆消息，黄色的消息显示异常，但它只确认了客户端已经看到的内容，接收到的是System.ServiceModel.FaultException，而不是普通的消息。
有什么办法弄清楚吗？
编辑忘记提到，我在配置中启用了错误处理程序，如下所示：
<behaviorExtensions>
.....
<add name="faultErrorHandlerBehavior"
type="Service.FaultErrorHandler,Service, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
.....
</behaviorExtensions>
<serviceBehaviors>
<behavior name="ServiceBehavior">
<serviceThrottling maxConcurrentCalls="200" maxConcurrentSessions="200"
maxConcurrentInstances="200" />
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="true" />
<faultErrorHandlerBehavior />
</behavior>
</serviceBehaviors>回答 1
Stack Overflow用户
回答已采纳
发布于 2011-07-06 08:57:58
(这是在黑暗中有点刺痛)我相信你可能有一个问题，因为对错误的行动不符合预期的客户端。请将您的CreateMessage替换为：
fault = Message.CreateMessage(version, faultMessage, faultException.Action);页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/6588320
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