Spring If an exception occurs during Pre-Flight request processing, @ExceptionHandler fails to handle it.

Affects: 5.2.12

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Hi, I have used interceptor to verify something. And an exception occurred in the interceptor while processing the Pre-Flight request. However, since PreFlightHandler is not a child of HandlerMethod, the exception that occurs during the Pre-Flight process is not handled by the ExceptionHandler.(Since AbstractHandlerMethodExceptionResolver only apply to HandlerMethod). So, response status becomes 500 not status I intended. Is this intended or just a bug?

Comment From: rstoyanchev

@ddaaac the pre-flight handler should update the response and typically there should be no need for any exception handling. Is DefaultCorsProcessor running into an exception somehow? Or are you handling this through the CorsFilter in which case the request doesn't even reach the DispatcherSevlet?

Note that starting in 5.3 we do support use of @ControllerAdvice to handle exceptions from any handler, but again for pre-flight requests, there shouldn't be any exceptions.

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