CODEWITHSUNDEEP
javajson
Felipe Mosso
Felipe Mosso

Reputation: 3927

How to get more the one value of the same key using Java

I'm receiving an JSON String in my Server which has only two parameters: name and number. Find example below:

{"name":"outlet.jpg","numbar":"2"},{"name":"image.jpg","number":"3"}, {"name":"testing.jpg","number":"1"}

I'm trying to unpack this values in a String Array. How can I do it?

This is what I have so far:

JSONObject jsonObject;

        try {
            jsonObject = new JSONObject(jsonString.substring(1, jsonString.length()-1));
            String name = jsonObject.getString("name");
            String number = jsonObject.getString("number");
            System.out.println("nome: " + name + " number: " + number);
        } catch (JSONException e) { 
            e.printStackTrace();
        }

There's no getString() in jsonObject which returns an Array. This example is only getting the first element of the JSON String.. How can I receive an String Array for each key of JSON String?

Upvotes: 0

Views: 4476

Answers (1)

Jason Sperske
Jason Sperske

Reputation: 30446

You are using the wrong type. What you want is a JSONArray.

This JSON:

[{"name":"outlet.jpg","number":"2"},{"name":"image.jpg","number":"3"}, {"name":"testing.jpg","number":"1"}]

And this code:

JSONArray json = new JSONArray(jsonString);
for(int index = 0; index < json.length(); index++) {
    JSONObject jsonObject = json.getJSONObject(index);
    String name = jsonObject.getString("name");
    String number = jsonObject.getString("number");
    System.out.println("name: " + name + " number: " + number);
}

Should produce this output:

name: outlet.jpg number: 2
name: image.jpg number: 3
name: testing.jpg number: 1

Upvotes: 5

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