The AppHostBase.ServiceExceptionHandler
global handler only handles service exceptions.
To handle exceptions occurring outside of services you can set the global AppHostBase.ExceptionHandler
handler, e.g:
public override void Configure(Container container)
{
//Handle Exceptions occurring in Services:
this.ServiceExceptionHandler = (request, exception) => {
//log your exceptions here
...
//call default exception handler or prepare your own custom response
return DtoUtils.HandleException(this, request, exception);
};
//Handle Unhandled Exceptions occurring outside of Services,
//E.g. in Request binding or filters:
this.ExceptionHandler = (req, res, operationName, ex) => {
res.Write("Error: {0}: {1}".Fmt(ex.GetType().Name, ex.Message));
res.EndServiceStackRequest(skipHeaders: true);
};
}
To create and serialize a DTO to the response stream in the non-service ExceptionHandler
you would need to access and use the correct serializer for the request from IAppHost.ContentTypeFilters.
More details about is in the Error Handling wiki page.