POST method and return JSON Object

Question

In my main class spring boot, I want to verify the information which are in the method parameters and do some logic to return JSON Object with attribute "code" which contains a value "0" But I'm getting the 400 bad request in postman.

Welcome to stackoverflow. Please read https://stackoverflow.com/help/how-to-ask on how to ask a good question. Hint a screenshot of code (not even included in the original question) isn't a good question. — M. Deinum, Jul 09 '20 at 13:46
@Sara do you call this a question title "POST method and return JSON Object" — deadshot, Jul 09 '20 at 13:53
I'm sorry I had no idea how to make a post in StackOverFlow Next time I will make sure to make my posts clear — Sarah, Jul 09 '20 at 13:58
@Sara check the link i have posted it will solve your problem — deadshot, Jul 09 '20 at 14:02

score 1 · Answer 1 · answered Jul 09 '20 at 14:04

1

You can not use @RequestBody twice at same request as there is only one. I guess you have an object called user with the fieldes as your json. You should change the method signiture to validateItems(@RequestBody User user) And your json to user:{... Fieldes and values}

answered Jul 09 '20 at 14:04

Itay wazana

229
2
9

Is it necessery to do this logic in RestController because I did it into the main class ? – Sarah Jul 09 '20 at 14:21
It is necessary to put the logic at controller. I would suggest go through thi guide https://www.baeldung.com/rest-with-spring-series – Itay wazana Jul 09 '20 at 14:50

score 0 · Answer 2 · answered Jul 09 '20 at 14:00

0

Create a Model class with parameters and pass the Model through the @RequestBody

Controller

@PostMapping(value = "/signin")
@ResponseBody
public String something(@RequestBody Model myModel) 
{
    return "";
}

Model

class Model {

  private String param1;
  private String param2;

  Model() {}

  Model(String param1, String param2) {
    this.param1 = param1;
    this.param2 = param2;
  }
}

answered Jul 09 '20 at 14:00

Jagadesh

2,104
1
16
28

is it okey to write this method into main class ? – Sarah Jul 09 '20 at 14:29
Can you be more specific which method are you talking about? Create a model class and use the model in your `@RequestBody` – Jagadesh Jul 09 '20 at 14:36
method post which is in the controller – Sarah Jul 09 '20 at 14:40
Nope.. Write it to the controller class. – Jagadesh Jul 09 '20 at 14:56

POST method and return JSON Object

2 Answers2