Question

I am dealing with json data fetched from twitter API

on PHP I normally do something like:

$data = json_decode($response);
and the $data would be STD class object

I want to do the same thing in Java.

I took a look at Gson, but I need a second argument which seems like I need to create a specific class for the fetched data.

The basic question is how can I convert JSON to Standard Java Object like in PHP (STD Class Object)

Thank You

Answer 1

Read it into a map using Jackson then you can access whatever data you want. For instance, if your json looks like this

{ "name":"blah",
  "address": {
    "line1": "1234 my street",
    "city": "my city",
    "state": "my state"
  }
}

Then you could:

ObjectMapper mapper = new ObjectMapper();
Map<String, Object> mystuff = mapper.readValue( jsonString, Map.class );
String name = (String)mystuff.get("name");
String city = ((Map<String, Object>)mystuff.get( "address" )).get( "city" );