Spring boot mvc. Passing a null request body

Question

Have a restcontroller mapping with a @RequestBody TypeA in it.

TypeA is resolved correctly, even if I send a {} as a body. The thing I'm trying to achieve is to have the same logic for when the body isn't sent at all (the @RequestBody is null).

Code:

@PostMapping('/post')
public ResponseEntity processPost(@RequestBody(required=false) Optional<TypeA> body) {
       return service.someAction(body.orElse(new TypeA());
}

So far, the only possible solution I see is to set the required = false, wrap the type in Optional, and work with the .orElseGet(...new), which works, but doesn't look valid.

Is there a proper way to have this?

I don't understand what you want, could you add some examples and what exactly you expect ? — Arnaud Claudel
– Arnaud Claudel, Commented Aug 6, 2019 at 14:39
I am trying to achieve the same behavior for both empty and null RequestBody — Draaksward
– Draaksward, Commented Aug 6, 2019 at 14:51
Ok thanks, but doesn't look valid. - Personally, I think that the only thing wrong is treating {} and null as the same. But if you really need this, I don't see anything wrong with your code — Arnaud Claudel
– Arnaud Claudel, Commented Aug 6, 2019 at 16:42

Dulaj Kulathunga · Accepted Answer · 2019-08-06 16:26:35Z

1

You can try this

@PostMapping('/post')
    public ResponseEntity processPost(@NotNull(message = "you can add null description") @RequestBody TypeA body) {

    }

edited Aug 6, 2019 at 16:26

answered Aug 6, 2019 at 16:15

Dulaj Kulathunga

1,2482 gold badges11 silver badges19 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

scatolone · Accepted Answer · 2019-08-06 15:33:29Z

0

I would do something like this:

@PostMapping('/post')
public ResponseEntity processPost(@RequestBody(required=false) TypeA body) {
       return service.someAction(body == null ? new TypeA(): body);
}

answered Aug 6, 2019 at 15:33

scatolone

8531 gold badge6 silver badges23 bronze badges

Collectives™ on Stack Overflow

Spring boot mvc. Passing a null request body

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related