转自:http://www.csframework.com/archive/1/arc-1-20150109-2193.htm
服务端增加WCF服务全局异常处理机制,任一WCF服务或接口方式出现异常,将统一调用WCF_ExceptionHandler.ProvideFault方法,因此不需要每个方法使用try catch写法。
1 /// <summary> 2 /// WCF服务端异常处理器 3 /// </summary> 4 public class WCF_ExceptionHandler : IErrorHandler 5 { 6 #region IErrorHandler Members 7 8 /// <summary> 9 /// HandleError 10 /// </summary> 11 /// <param name="ex">ex</param> 12 /// <returns>true</returns> 13 public bool HandleError(Exception ex) 14 { 15 return true; 16 } 17 18 /// <summary> 19 /// ProvideFault 20 /// </summary> 21 /// <param name="ex">ex</param> 22 /// <param name="version">version</param> 23 /// <param name="msg">msg</param> 24 public void ProvideFault(Exception ex, MessageVersion version, ref Message msg) 25 { 26 // 27 //在这里处理服务端的消息,将消息写入服务端的日志 28 // 29 string err = string.Format("调用WCF接口 '{0}' 出错", ex.TargetSite.Name) ",详情: " ex.Message; 30 var newEx = new FaultException(err); 31 32 MessageFault msgFault = newEx.CreateMessageFault(); 33 msg = Message.CreateMessage(version, msgFault, newEx.Action); 34 } 35 36 #endregion 37 } 38 39 //来源:C/S框架网(www.csframework.com) QQ:1980854898
1 /// <summary> 2 /// WCF服务类的特性 3 /// </summary> 4 public class WCF_ExceptionBehaviourAttribute : Attribute, IServiceBehavior 5 { 6 private readonly Type _errorHandlerType; 7 8 public WCF_ExceptionBehaviourAttribute(Type errorHandlerType) 9 { 10 _errorHandlerType = errorHandlerType; 11 } 12 13 #region IServiceBehavior Members 14 15 public void Validate(ServiceDescription description, 16 ServiceHostBase serviceHostBase) 17 { 18 } 19 20 public void AddBindingParameters(ServiceDescription description, 21 ServiceHostBase serviceHostBase, 22 Collection<ServiceEndpoint> endpoints, 23 BindingParameterCollection parameters) 24 { 25 } 26 27 public void ApplyDispatchBehavior(ServiceDescription description, 28 ServiceHostBase serviceHostBase) 29 { 30 var handler = 31 (IErrorHandler)Activator.CreateInstance(_errorHandlerType); 32 33 foreach (ChannelDispatcherBase dispatcherBase in 34 serviceHostBase.ChannelDispatchers) 35 { 36 var channelDispatcher = dispatcherBase as ChannelDispatcher; 37 if (channelDispatcher != null) 38 channelDispatcher.ErrorHandlers.Add(handler); 39 } 40 } 41 42 #endregion 43 } 44 45 //来源:C/S框架网(www.csframework.com) QQ:1980854898
使用:
1 [ServiceBehavior(IncludeExceptionDetailInFaults = true)] 2 [WCF_ExceptionBehaviour(typeof(WCF_ExceptionHandler))] 3 public class AccountModuleService : IAccountModuleService 4 { 5 6 //来源:C/S框架网(www.csframework.com) QQ:1980854898 7 8 9 }