Flatten a JSON string to make the key including each level key value to Map using Gson or Jackson

Question

I have an enhanced question regarding Flatten a JSON string to Map using Gson or Jackson.

My scenario included duplicated keys, so the solution in the above questio

Answer 1

I resolved this using below simple code, Only think is need to download jettison and flattener.JsonFlattener library

import java.util.Map;
import org.codehaus.jettison.json.JSONObject;
import com.github.wnameless.json.flattener.JsonFlattener;

public class test {

    public static void main(String[] args) {
        String jsonString = "{\"id\" : \"123\",\"name\" : \"Tom\",\"class\" : {\"subject\" : \"Math\",\"teacher\" : \"Jack\"}}";
        JSONObject jsonObject = new JSONObject();
        String flattenedJson = JsonFlattener.flatten(jsonString);
        Map flattenedJsonMap = JsonFlattener.flattenAsMap(jsonString);
        System.out.println(flattenedJsonMap);
    }
}

Reference link : https://github.com/wnameless/json-flattener