从Web API错误中筛选异常堆栈跟踪

在我的代码中，我使用异常过滤器来做你所要求的，查看以下两个链接了解更多细节

Web API异常处理

Web API全局错误处理

我们在代码中所做的如下:

1. 创建例外过滤器:

   public class ViewRExceptionFilterAttribute : ExceptionFilterAttribute
   {
   // Global context message for the modifying the context response in case of exception
   private string globalHttpContextMessage;
   /// <summary>
   ///     Overriding the OnException method as part of the Filter, which would detect the type of Action and would
   ///     accordingly modify the Http
   ///     context response
   /// </summary>
   /// <param name="context"></param>
   public override void OnException(HttpActionExecutedContext context)
   {
       // Dictionary with Type and Action for various Type actions, current method is called by various types
       Dictionary<Type, Action> dictionaryExceptionTypeAction = new Dictionary<Type, Action>();
       // Add an action for a given exception type
       dictionaryExceptionTypeAction.Add(typeof (ViewRClientException), ViewRClientExceptionAction(context.Exception));            
       dictionaryExceptionTypeAction.Add(typeof (Exception), SystemExceptionAction(context.Exception));
       // Execute an Action for a given exception type
       if (context.Exception is ViewRClientException)
           dictionaryExceptionTypeAction[typeof (ViewRClientException)]();
      else
           dictionaryExceptionTypeAction[typeof (Exception)]();
       // Reset the Context Response using global string which is set in the Exception specific action
       context.Response = new HttpResponseMessage
       {
           Content = new StringContent(globalHttpContextMessage)
       };
   }
   /// <summary>
   ///     Action method for the ViewRClientException, creates the Exception Message, which is Json serialized
   /// </summary>
   /// <returns></returns>
   private Action ViewRClientExceptionAction(Exception viewRException)
   {
       return (() =>
       {
           LogException(viewRException);
           ViewRClientException currentException = viewRException as ViewRClientException;
           ExceptionMessageUI exceptionMessageUI = new ExceptionMessageUI();
           exceptionMessageUI.ErrorType = currentException.ErrorTypeDetail;
           exceptionMessageUI.ErrorDetailList = new List<ErrorDetail>();
           foreach (ClientError clientError in currentException.ClientErrorEntity)
           {
               ErrorDetail errorDetail = new ErrorDetail();
               errorDetail.ErrorCode = clientError.ErrorCode;
               errorDetail.ErrorMessage = clientError.ErrorMessage;
               exceptionMessageUI.ErrorDetailList.Add(errorDetail);
           }
           globalHttpContextMessage = JsonConvert.SerializeObject(exceptionMessageUI, Formatting.Indented);
       });
   }
   

这里ViewRClientException是我的自定义异常类，具有以下模式:

public class ViewRClientException : Exception
{
    public ViewRClientException(ErrorType errorType, List<ClientError> errorEntity)
    {
        ErrorTypeDetail = errorType;
        ClientErrorEntity = errorEntity;
    }
    public ErrorType ErrorTypeDetail { get; private set; }
    public List<ClientError> ClientErrorEntity { get; private set; }
}

Action方法确保我们获得相关的Json序列化字符串，它可以用作Json响应，类似于SystemExceptionAction对于任何通用异常的工作，它不是自定义的。事实上，我有许多其他自定义异常类别。当前过滤器修改HttpContext。响应

  public static class WebApiConfig
    {
      public static void Register(HttpConfiguration config)
      {
        // Web API configuration and services
        // Adding the Generic Exception Filter for the application
        config.Filters.Add(new ViewRExceptionFilterAttribute());
        // Web API routes
        config.MapHttpAttributeRoutes();
        config.Routes.MapHttpRoute("ControllerActionApi", "api/{controller}/{action}/{userID}",
            new {userID = RouteParameter.Optional}
            );
        config.Routes.MapHttpRoute("ControllerApi", "api/{controller}/{userID}",
            new {userID = RouteParameter.Optional}
            );
      }
   }

不完整示例。ClientError,ErrorType ErrorTypeDetail

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