How to convert a snake_case JSON to nested JSON in java?

Question

I have few cases where I want to convert a snake_case JSON to nested JSON eg

{
    "snake_case": {
        "test": "value"
    }
}

to

{
    "snake": {
        "case": {
            "test": "value"
        }
    }
}

Is there any way to do this in java other then manually parsing the strings with _ or there any libraries are there in java?

Answer 1

Consider your JSON data as String:

String strjson="{snake_case: {test: value}}";

then

JSONObject jj=new JSONObject(strjson);
JSONObject jfinal=new JSONObject();

Iterator<String> itr=jj.keys();

while(itr.hasNext())
{
    String key=itr.next();
    if(key.contains("-"))
    {
        JSONObject jkey=jj.getJSONObject(key);
        JSONObject jnew=new JSONObject();
        jnew.put(key.split("-")[1],jkey);
        jfinal.put(key.split("-")[0],jnew);
    }
}

you can get the output in jfinal.

Answer 2

You could BSON to achieve this. Here is the code you would use.

 //import java.util.ArrayList;
 //import org.bson.Document;

 //Declare three json object
 Document root= new Document();
 Document rootSnake = new Document();
 Document rootSnakeCase = new Document();


 //Add value to the most nested object
 rootSnakeCase.append("test","value");



 //combine the objects together
 if (!rootSnakeCase.isEmpty()){
 rootSnake.append("case",rootSnakeCase);
 }
 if (!rootSnake.isEmpty()){
 root.append("snake",rootSnake);
 }


 //output code
 System.out.println(root.toJson());