Handling MultipartException with Spring Boot and display error page

Question

I have a very simple file upload set up with Spring Boot. I was wondering if there was an easy way to display an error page when the maximum file size is exceeded.

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Answer 1

Multipart request parsing happens before a handler is selected and hence there is no @Controller and therefore no @ControllerAdvice to speak of yet. You can use an ErrorController (see http://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-developing-web-applications.html#boot-features-error-handling) for that.

BTW you don't need @RequestParam. It's enough that the argument type is MultipartFile.