CODEWITHSUNDEEP
javajsonspringspring-boot
Adindu Stevens
Adindu Stevens

Reputation: 3567

How to bind JSON HashMap to the @RequestBody in spring boot

I want to bind this JSON structure

{
"male": {
    "id": "0001",
    "name": "Emma",
    "pet": "dog"
},   
"female": {
    "id": "0001",
    "name": "Cilia",
    "pet": "cat"
}
}

To java HashMap data structure using spring boot @RequestBody annotation. However, spring boot is not able to bind it, but if i receive the json as string and bind it manually to the HashMap it will succeed. Here is the HashMap

public class Tickets {
    
    private HashMap<String, PeopleType> peopleTypes = new HashMap();
}

public class PeopleType {

    private String id;
    
    private String name;
   
    private String pet;
}

Here is the controller

@PostMapping("/url")
public ResponseEntity bookTickets(@RequestBody Tickets tickets, HttpSession session) {
...
}

I removed all Getters and Setters for brevity

Upvotes: 1

Views: 5273

Answers (1)

Andreas
Andreas

Reputation: 159106

Try this:

@PostMapping("/url")
public ResponseEntity bookTickets(@RequestBody Map<String, PeopleType> peopleTypes, HttpSession session) {
    Tickets tickets = new Tickets();
    tickets.setPeopleTypes(peopleTypes);
    ...
}

Or try this:

public class Tickets {
    private Map<String, PeopleType> peopleTypes = new HashMap<>();

    @JsonAnySetter
    public void addPeopleType(String type, PeopleType peopleType) {
        peopleTypes.put(type, peopleType);
    }
}

@PostMapping("/url")
public ResponseEntity bookTickets(@RequestBody Tickets tickets, HttpSession session) {
    ...
}

Upvotes: 3

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