مشکل حل شد. سپاس
@ExceptionHandler(CRUDException.class)


public ModelAndView handleCustomException(CRUDException ex) {

    ModelAndView model = new ModelAndView(ex.getMessage());

    String errorMessage = messageSource.getMessage("crud_failed", null, "Success message",

            LocaleContextHolder.getLocale());

    model.addObject("errorMessage", errorMessage);

    model.addObject("errorCouse", ex.getCause().getMessage());

    return model;
}