java - 如何在 Spring Boot 中将 JSON HashMap 绑定(bind)到 @RequestBody

Question

我想绑定(bind)这个JSON结构

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

使用spring boot @RequestBody注解来实现java HashMap数据结构。但是，Spring Boot 无法绑定(bind)它，但是如果我接收 json 作为字符串并将其手动绑定(bind)到 HashMap 它将成功。这是 HashMap

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

public class PeopleType {

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

这是 Controller

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

为了简洁起见，我删除了所有 Getter 和 Setter

Answer 1

试试这个:

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

或者试试这个:

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) {
    ...
}