Spring multipart file upload size

Question

My application has following properties set

spring.http.multipart.max-file-size = 10MB

and

spring.http.multipart.max-request-size  = 10MB

But instead of throwing the Springs default exception below

{ "message": "Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (12780451) exceeds the configured maximum (10485760)", "type": "MultipartException" }

I would like to throw CustomException with message like FILE_SIZE_TOO_BIG. Is this possible?
Can I use @ControllerAdvice for this ?

Answer 1

There're a lot of ways to handle exceptions in Spring application. See exception handling in Spring MVC topic. I think GlobalControllerExceptionHandler taken from the provided article will fit your requirements. Try this handler:

@ControllerAdvice
class GlobalControllerExceptionHandler {
    @ResponseStatus(value = HttpStatus.PAYLOAD_TOO_LARGE)
    @ExceptionHandler(MultipartException.class)
    public void handleMultipart(MultipartException exception) {
        // to do
    }
}

If you get this class picked up by component scan, it should handle MultipartExceptions thrown from any controller.