How to receive multiple RequestBody in a controller and save it according to its type in Spring Boot?

Question

I am new to spring boot, and Thank you in advance. I am facing a problem: I would like to receive two types of object in the controller, using the @ResponseBody, then save them.

I have two models

public class Person {
    int a;
    int b;
    int c;
}

public class Human {
    int a;
    int b;
    int c
}

By doing something like this:

@PostMapping(value="/save")
public void savePerson(@RequestBody Person person,  @RequestBody Human human) {
    personRepo.save(person);
    humanRepo.save(human);          
}

I want to save person and human on the same request. How to achieve this?

Does this answer your question? [How to save same object multiple times use Spring Data?](https://stackoverflow.com/questions/46602283/how-to-save-same-object-multiple-times-use-spring-data) — Adya, Sep 23 '21 at 05:22
It only saves person information but shows null for human but I wants to save person and human at the same time on the same request as both have same fields — bijay limbu, Sep 23 '21 at 05:49
so `human` is `null`? Or does it have the same values as `person`? Please clarify. — Jens Schauder, Sep 23 '21 at 08:17
Is Human a child class of Person or vice-versa ? Please post your POST request body. — Nice Books, Sep 23 '21 at 08:45
Then where does it "show `null` for human"? Please state what the actual problem is. — Jens Schauder, Sep 23 '21 at 08:51
When I do the post method it will show null for human but not for person — bijay limbu, Sep 23 '21 at 10:28

score 1 · Answer 1 · edited Sep 23 '21 at 11:00

1

Is Person and Human the same 'Entity'? I mean are the values from the post request the same?

If yes I would remove Human from the Arguments and create it based on Person

@PostMapping(value="/save")
public void savePerson(@RequestBody Person person) {
      
        Human human = mapPersonToHuman(); 
        personRepo.save(person);
        humanRepo.save(human);          
}

Otherwise if person and human are two different things, I would create a new Wrapper Object so you can a new messages with both entities.

public class PersonHumanWrapper{
    Person person;
    Human human;
}

edited Sep 23 '21 at 11:00

Nice Books

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answered Sep 23 '21 at 05:48

Andreas Radauer

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Thank You for the answer but it only saves person data whereas human data is null. I want to save on both entities with the only post of a person as both have the same column header and datatype – bijay limbu Sep 23 '21 at 11:30

score 0 · Answer 2 · answered Sep 23 '21 at 11:19

0

What you could do is: create an object with these two objects inside:

public class PersonAndHuman {

    private Person person;
    private Human human;

    // getters and setters...
}

And your controller should receive this object:

@PostMapping(value="/save")
public void savePerson(@RequestBody PersonAndHuman personAndHuman) {
    personRepo.save(personAndHuman.getPerson());
    humanRepo.save(personAndHuman.getHuman());          
}

Now, if you are using JSON to make the post, do something like:

{
   "human" : {
       //body here
   },
   "person": {
       //body here
   }
}

answered Sep 23 '21 at 11:19

Rhadamez Gindri Hercilio

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Thank You for the answer but what I am looking for is I want to post in both human and person with only { "human": {} }. I meant to say it should post on both with just human post. – bijay limbu Sep 23 '21 at 11:27
1

Can you update the question with your possible json body? maybe I can update my answer as well. – Rhadamez Gindri Hercilio Sep 23 '21 at 12:30

How to receive multiple RequestBody in a controller and save it according to its type in Spring Boot?

2 Answers2