I have a custom exception filter capable handle all the errors in the controller( just a common error handling mechanism) ,
public class ExceptionHandlingAttribute : ExceptionFilterAttribute
{
public override void OnException(HttpActionExecutedContext actionExecutedContext)
{
var error = actionExecutedContext.Exception;
if (error is BussinessExcetion)
{
var exceptionBase = (BussinessExcetion)error;
var code = (HttpStatusCode)exceptionBase.HttpExceptionCode;
throw new HttpResponseException(new HttpResponseMessage(code)
{
Content = new StringContent(exceptionBase.Message),
ReasonPhrase = "Exception"
,
});
}
// Now log the error
/* Error logging */
LoggingFactory.GetLogger().LogError(string.Format("Exception:{0} ||Stack trace:{1}", error.Message, error.StackTrace), error);
throw new HttpResponseException(new HttpResponseMessage(HttpStatusCode.InternalServerError)
{
Content = new StringContent("An error occurred, contact the support team."),
ReasonPhrase = "Critical Exception"
});
}
}
I registered this filter in fillterConfig file
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
filters.Add(new ExceptionHandlingAttribute());
filters.Add(new HandleErrorAttribute());
}
but i am getting an error
The given filter instance must implement one or more of the following filter interfaces: IAuthorizationFilter, IActionFilter, IResultFilter, IExceptionFilter
I know the ExceptionFilterAttribute already implimented IExceptionFilter filter. Why i am getting this error
In ASP.NET MVC Web API, we usually have three ways to handle exceptions, HttpResponseException, associated with HttpStatusCode, --- Locally in Try-catch-final. Exception filter, --- in the level of Action, Controller, and Globally.
Like other filters, authentication filters can be applied per-controller, per-action, or globally to all Web API controllers. To apply an authentication filter to a controller, decorate the controller class with the filter attribute.
In order for this to work, you need to implement System.Web.Http.Filters.ExceptionFilterAttribute.
public class NotImplExceptionFilterAttribute : ExceptionFilterAttribute
{
log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
public override void OnException(HttpActionExecutedContext context)
{
RequestData requestData = new RequestData(context.Request);
log.Error("NotImplExceptionFilterAttribute", context.Exception);
context.Response = new HttpResponseMessage(HttpStatusCode.NotImplemented);
}
}
Then, in your WebApiConfig.cs, register the filter:
public static void Register(HttpConfiguration config)
{
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{count}",
defaults: new { count = RouteParameter.Optional }
);
config.Filters.Add(new NotImplExceptionFilterAttribute());
}
And for anyone using NLog:
public class NlogExceptionFilter : ExceptionFilterAttribute
{
public override void OnException(HttpActionExecutedContext filterContext)
{
Exception lastException = filterContext.Exception;
Logger logger = LogManager.GetLogger("");
logger.Fatal(lastException.Message, lastException);
}
}
And in the WebApiConfig.cs
public static void Register(HttpConfiguration config)
{
config.Filters.Add(new NlogExceptionFilter());
...
}
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