[FIXED] Unable to return a JSONObject field of a class properly

Issue

I have a DTO like below:

@Getter
@Setter
@AllArgsConstructor
public class LightRoundResponse {
    private String round;
    private JSONObject fields;
}

I am able to store and fetch the JSON Object from the DB. After setting DTO's fields attribute with the ResultSet's fields, I am able to see the JSONObject containing the correct data while debugging.

However the response which I get is:

{
    "round": "A Round",
    "fields": {
        "empty": false
    }
}

fields object is incorrect, I think since it's a JSONObject it could be an issue but I am not sure. How can I get the correct response and not "empty": false

Solution

Jackson does not know how to serialize JSONObject class. The expected way to do that is to actually use Map<String, Object>:

@Getter
@Setter
@AllArgsConstructor
public class LightRoundResponse {
    private String round;
    private Map<String, Object> fields;
}

Answered By - lkatiforis
Answer Checked By - Clifford M. (JavaFixing Volunteer)