Spring Rest API Post command passing null value

Question

I'm trying to create a rest post request using Spring but what is been received is a null value.

If I use the first request I get back null values. If I use the second request I receive a 415Unsupported Media Type. Does anyone know where my issue is?

@RequestMapping(value = "/product", method=RequestMethod.POST,produces = "application/json")
@ResponseBody Product addProduct(Product p1) {
    System.out.print("Adding product:"+p1.getDescription());
    return p1;
}

@RequestMapping(value="/product2", method=RequestMethod.POST, produces = { MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
public Product greeting(@RequestBody Product p1) {
    System.out.print("Adding product:"+p1.getDescription());
    return p1;
   }

UPDATE to include POSTMAN 1 2 3

Please, add http request example

Nick
– Nick

2020-05-06 13:23:20 +00:00
Commented May 6, 2020 at 13:23 — Nick
– Nick, Commented May 6, 2020 at 13:23
Added HTTP request

TrevDroid
– TrevDroid

2020-05-07 01:26:00 +00:00
Commented May 7, 2020 at 1:26 — TrevDroid
– TrevDroid, Commented May 7, 2020 at 1:26

Guilherme Barboza · Accepted Answer · 2020-05-09 04:33:43Z

1

Try doing this:

@PostMapping(path = "/product")
public ResponseEntity<Product> addProduct(@RequestBody Product p1) {
    System.out.print("Adding product:"+p1.getDescription());
    return new ResponseEntity<Product>(p1, HttpStatus.OK);
}

By default, Spring should detect that the JSON you are trying to pass can be parsed into a Product object. Spring also takes care of the return type, therefore, you don't need to write a lot of code to make the object be parsed back to a JSON.

Also, on Postman, add the header Content-Type with the value application/json.

edited May 9, 2020 at 4:33

answered May 7, 2020 at 2:16

Guilherme Barboza

6621 gold badge7 silver badges23 bronze badges

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

Collectives™ on Stack Overflow

Spring Rest API Post command passing null value

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related