How to add all @PostMapping parameters to a Map?

Question

I want to provide a POST servlet that takes the following JSON content:

{
  "name": John
  "age": 25,
  "some": "more",
  "params: "should",
  "get": "mapped"
}

Two of those properties should be explicit mapped to defined parameters. All other parameters should go into a Map<String, String>.

Question: how can I let Spring map them directly into the map of the bean?

@RestController
public void MyServlet {
   @PostMapping
   public void post(@RequestBody PostBean bean) {

   }
}

public class PostBean {
   private String name;
   private String age;

   //all other json properties should go here
   private Map<String, String> map;
}

Answer 1

public class PostBean {
    private Map<String, String> map;

    @JsonAnyGetter
    public Map<String, String> getMap() {
        return map;
    }

    @JsonAnySetter
    public void setMap(String name, String value) {
        if (this.map == null) map = new HashMap<>();
        this.map.put(name, value);
    }
}