Why Spring MVC does not allow to expose Model or BindingResult to an @ExceptionHandler?

Question

Situation

I\'m trying to group the code that logs the exceptions and render a nice view in a few methods. At the moment the logic is sometime in the @RequestHand

Answer 1

To improve the first answer:

    @ExceptionHandler(value = {MethodArgumentNotValidException.class})
@ResponseStatus(HttpStatus.BAD_REQUEST)
@ResponseBody
public VndErrors methodArgumentNotValidException(MethodArgumentNotValidException ex, WebRequest request) {
    List fieldErrors = ex.getBindingResult().getFieldErrors();
    List globalErrors = ex.getBindingResult().getGlobalErrors();
    List errors = new ArrayList<>(fieldErrors.size() + globalErrors.size());
    VndError error;
    for (FieldError fieldError : fieldErrors) {
        error = new VndError(ErrorType.FORM_VALIDATION_ERROR.toString(), fieldError.getField() + ", "
                + fieldError.getDefaultMessage());
        errors.add(error);
    }
    for (ObjectError objectError : globalErrors) {
        error = new VndError(ErrorType.FORM_VALIDATION_ERROR.toString(),  objectError.getDefaultMessage());
        errors.add(error);
    }
    return new VndErrors(errors);
}

There is already MethodArgumentNotValidException has already a BindingResult object, and you can use it, if you don't need to create an specific exception for this purpose.