I am storing a json string into a text field in mysql.
After the insertion, i want to update my json string and add the mysql line id into it with jackson json.

I have a java String which is in Json format

{

  thing:val

}

I'm looking to add another K/V without writing lines of codes.

to finally have this :

{

  thing:val

  mysqlId:10

}

I can convert my String to a JsonNode :

ObjectMapper mapper = new ObjectMapper();

JsonNode json = mapper.readTree( jsonStr);

Looking to do something like this

json.put(mysqlId,10);

json.toString();

then update in my text field with new json string in mysql

I can't make it.
I don't want use many class is there a simple way to do so with jackson?