How to jackson serialize naming by value?

Question

Some api need json like this：

{
  "token_123213p123": ""
}

the token_123213p123 is dynamic, so I create a class:

@Data
public class Entity {
  // I will set 'token_123213p123' in this
  @JsonIgnore
  private String token;
}

so how to when serialize to add "token_123213p123": "" from token

score 0 · Answer 1 · answered Jun 08 '21 at 08:12

Use a Map<>:

static class Data {
    public Map<String, String> map;
}

public static void main(String[] args) throws JsonProcessingException {
    Data data = new ObjectMapper().readValue("{\"map\": {\"foo\": \"bar\", \"bar\": \"foo\"}}", Data.class);
    data.map.forEach((k, v) -> System.out.printf("%s: %s%n", k, v));
}

with output

foo: bar
bar: foo

How to jackson serialize naming by value?

1 Answers1