您可以这样做,但最好实现 IErrorHandler并将其作为行为添加到您的服务中,这将允许您在一个地方处理未处理的异常,因此您将能够在那里创建一个错误异常将详细信息返回给用户。
ErrorHandler : IErrorHandler
{
... just implement the handling of errors here, however you want to handle them
}
然后创建一个使用它的行为:
/// <summary>
/// Custom WCF Behaviour for Service Level Exception handling.
/// </summary>
public class ErrorHandlerBehavior : IServiceBehavior
{
#region Implementation of IServiceBehavior
public void Validate (ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
{
}
public void AddBindingParameters (ServiceDescription serviceDescription, ServiceHostBase serviceHostBase,
Collection<ServiceEndpoint> endpoints, BindingParameterCollection bindingParameters)
{
}
public void ApplyDispatchBehavior (ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
{
IErrorHandler errorHandler = new ErrorHandler ();
foreach (ChannelDispatcherBase channelDispatcherBase in serviceHostBase.ChannelDispatchers)
{
var channelDispatcher = channelDispatcherBase as ChannelDispatcher;
if (channelDispatcher != null)
{
channelDispatcher.ErrorHandlers.Add (errorHandler);
}
}
}
#endregion
}
然后,如果您是自托管,您可以通过编程方式添加行为:
myServiceHost.Description.Behaviors.Add (new ErrorHandlerBehavior ());
如果您想通过配置添加它,那么您需要以下之一:
public class ErrorHandlerElement : BehaviorExtensionElement
{
public override Type BehaviorType
{
get { return typeof (ErrorHandlerBehavior); }
}
protected override object CreateBehavior ()
{
return new ErrorHandlerBehavior ();
}
}
}
然后是配置:
<system.serviceModel>
<extensions>
<behaviorExtensions>
<add name="ErrorLogging" type="ErrorHandlerBehavior, ErrorHandling, Version=1.0.0.0, Culture=neutral, PublicKeyToken=<whatever>" />
</behaviorExtensions>
</extensions>
<bindings>
<basicHttpBinding>
<binding name="basicBinding">
</binding>
</basicHttpBinding>
</bindings>
<services>
<service behaviorConfiguration="Service1Behavior" name="Service">
<endpoint address="" binding="basicHttpBinding" bindingConfiguration="basicBinding" contract="Service" />
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="Service1Behavior">
<serviceMetadata httpGetUrl="" httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="false" />
<ErrorLogging /> <--this adds the behaviour to the service behaviours -->
</behavior>
</serviceBehaviors>
</behaviors>