How to nest objects when building JSON with JSONObject

Question

I'm trying to encode this string for a POST request. Can anyone tell me how I can encode

{"jsonrpc": "2.0", "method": "Files.GetSources", "params":{"media":"music"}, "id": 1}

So far I have

JSONOjbect obj = new JSONObject();
obj.put("jsonrpc", "2.0");
obj.put("method", "Files.GetSources");

But I'm not sure how to put in the rest - can anyone help?

You're going to have to be a lot more specific if you expect any useful replies. — Marvin Pinto
– Marvin Pinto, Commented Feb 10, 2012 at 16:28

Rob Hruska · Accepted Answer · 2012-02-10 16:43:00Z

26

If you're asking how you'd put the nested params object in there, you'd probably do:

JSONObject params = new JSONObject();
params.put("media", "music");

obj.put("params", params);

To use an array (per your comments below), you'd do something like this:

JSONArray properties = new JSONArray();
properties.put("resume");
properties.put("genre");
properties.put("studio");
...

JSONObject params = new JSONObject();
params.put("properties", properties);

obj.put("params", params);

edited Feb 10, 2012 at 16:43

answered Feb 10, 2012 at 16:29

Rob Hruska

121k32 gold badges170 silver badges193 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Andrew Butler Over a year ago

thanks! That worked! Sorry for being vague, could you multiple nested? For example .. for one like this.. {"jsonrpc": "2.0", "method": "VideoLibrary.GetMovies", "params": {"properties": ["resume", "genre", "studio", "tagline", "runtime", "fanart", "thumbnail", "file", "plot", "plotoutline", "year", "lastplayed", "rating"]}, "id": 1}

Rob Hruska Over a year ago

Yes, you can nest things as far as you like (using the same principle from this answer). For your properties, you'd use a JSONArray instead of JSONObject.

Rob Hruska Over a year ago

@RethinavelPillai - It's the OP's original, top-level object that he's trying to add nested items to.

Ivan Bartsov · Accepted Answer · 2020-03-11 07:21:26Z

3

JSONOjbect obj = new JSONObject().put("jsonrpc", "2.0")
    .put("method", "Files.GetSources").put("id", 1)
    .put("params", new JSONObject().put("media", "music"));

Chaining .put() like this is possible because put() returns the object it was called on - for this exact purpose.

edited Mar 11, 2020 at 7:21

answered Feb 10, 2012 at 16:31

Ivan Bartsov

21.5k7 gold badges67 silver badges63 bronze badges

1 Comment

Andrey Solera Over a year ago

There are missing parenthesis:

JSONOjbect obj = new JSONObject().put("jsonrpc", "2.0")     .put("method", "Files.GetSources").put("id", 1)     .put("params", new JSONObject().put("media", "music"));

CaseyB · Accepted Answer · 2012-02-10 16:30:30Z

0

You have two choices. You can create another object that holds "media":"music" and then put that in the original JSONObject or you can just pass this whole string into the JSONObject constructor and have it parse it for you.

answered Feb 10, 2012 at 16:30

CaseyB

25.1k16 gold badges81 silver badges115 bronze badges

Comments

Redwarp · Accepted Answer · 2012-02-10 16:32:12Z

0

Well, if you do have the string before hand, you can simply do

JSONObject object = JSONObject.getJSONObject("{\"jsonrpc\": \"2.0\", \"method\": \"Files.GetSources\", \"params\":{\"media\":\"music\"}, \"id\": 1}");

answered Feb 10, 2012 at 16:32

Redwarp

3,2313 gold badges34 silver badges45 bronze badges

Collectives™ on Stack Overflow

How to nest objects when building JSON with JSONObject

4 Answers 4

3 Comments

1 Comment

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

3 Comments

1 Comment

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related