@Valid annotation works with @RequestBody but not with RequestEntity

Question

Spring MVC's @Valid annotation works as expected with @RequestBody arg but it's not working with RequestEntity arg. Is there anyway to get it working?

score 1 · Answer 1 · answered Jun 06 '18 at 13:16

1

@Valid is not from Spring MVC, @Valid relies under package javax.validation; Maybe you meant @Validated. Nevertheless @RequestBody and RequestEntity have to be taken differently in terms of validation.

@RequestBody is used in a Spring MVC Controller to annotate the payload of a request, but has nothing to do with validation of this incoming payload object.

RequestEntity is used to wrap the actual payload in preparation for a new request. No validation is applied when you create a new RequestEntity.

answered Jun 06 '18 at 13:16

mrkernelpanic

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Is it not correct to accept the request in a spring mvc controller as RequestEntity instead of @RequestBody? – l a s Jun 06 '18 at 13:21
Sure, It is allowed. – mrkernelpanic Jun 06 '18 at 13:28
Then how do I use jsr303 to validate the RequestEntity body? @Valid didn't work. – l a s Jun 06 '18 at 13:29

score 0 · Answer 2 · answered Jun 08 '18 at 17:07

The @Valid annotation worked with @RequestBody because the RequestResponseBodyMethodProcessor (which does the work of resolving this handler argument) looks for the presence of @Valid and, if it is found, applies all matching validators it finds in the WebDataBinder.

On the other hand, ResponseEntity arguments are resolved by HttpEntityMethodProcessor, which does not perform validation even if the argument is annotated with @Valid.

You can, of course, perform validation manually in the handler method by invoking a validator of your choosing. It’s certainly possible, although you might want to consider a different approach.

Thanks. So, it's a new feature request. – l a s Jun 08 '18 at 17:10 — l a s, Jun 08 '18 at 17:10

@Valid annotation works with @RequestBody but not with RequestEntity

2 Answers2