将 JsonObject 嵌套到字符串

Question

I want to convert the value of 'points' to a string. Initially, it is an Object.

{
        "note": "testing",
        "Area": "India",
        "workId": "21390",
        "points": {
            "value1": [
                [
                    [1, 2],
                    [3, 4]
                ]
            ],
            "value2": 5,
            "value3": {
                "q": 1111,
                "l": 0011
            }
        }
    }

I am trying to use the below code but it giving me "deserialize instance of java.lang.String"

if (Json_object.has("points"))
{
    String string = Json_object.getJSONObject("points").toString();
    payload.put("points",string);
    /*more code */
}

Please Help!

Answer 1

First of all, this is not an approach to deal with a JSON object.

• You should write POJO classes for your JSON object. Using this site ( http://www.jsonschema2pojo.org/ ), you can convert JSON to java classes easily.
• Then use Jackson or Gson like converter, to convert JSON object to java object. Follow the tutorial for more details, https://howtodoinjava.com/jackson/jackson-convert-object-to-from-json/
• Inside your Points class, write your own toString() method/logic.

This is a reusable and straightforward way.