Json object from database in java

Question

Can anyone help me how to create a JSON Object from the database?

This is what the JSON output should look like:

{“devicelist”:{
    “de         


        

Answer 1

With jOOQ, you could produce a similar JSON list from your database:

String json = create.select(TYPE, NAME, DEMO)
                    .from(REGISTER_DEVICE)
                    .fetch()
                    .formatJSON();

The JSON String would look like this (configurable):

{fields:["TYPE","NAME","DEMO"],
 records:[["01","CAM","Livingroom"],["15","CAM","Kitchen"]]}

See more here. Alternatively, you can use your RDBMS's native SQL/JSON capabilities to create arbitrarily nested JSON documents.

(Disclaimer: I work for the company behind jOOQ)