How to send specific data in JSON Array

Question

I'm making my own API from Instagram's public API. So basically what my api will do is it will show user all the slide-videos and the user can decide which one to download. In my API i just want all videos url and shortcode.

This is how my API will looks like.

info : [
{
  shortcode : "",
  video_url :  "",  
},
{
  shortcode : "",
  video_url :  "",  
  
},
{
  shortcode : "",
  video_url :  "",  
  
}]

and this is how I'm reading the data of Instagram's API.

URL url = new URL("https://www.instagram.com" + link + "?__a=1");
    HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();

    connection.setRequestMethod("GET");
    connection.setRequestProperty("User-Agent", "Chrome/86.0.4240.75");
    BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));
    String inputLine;
    StringBuilder stream = new StringBuilder();
    while ((inputLine = br.readLine()) != null) {
        stream.append(inputLine);
        pojo.data(stream.toString()); 
    }
    System.out.println(pojo.data());
    
    JSONObject obj = new JSONObject(pojo.data());
    JSONObject obj1 = obj.getJSONObject("graphql");
    JSONObject obj2 = obj1.getJSONObject("shortcode_media");
    String id = obj2.getString("id");
    JSONObject obj3 = obj2.getJSONObject("edge_sidecar_to_children");
    JSONArray array = obj3.getJSONArray("edges");
    
    if (obj2.getBoolean("is_video") == false) {
        System.out.println("is video false");

        for (int i = 0; i < array.length(); i++) {
            JSONObject json = array.getJSONObject(i);
            JSONObject json1 = json.getJSONObject("node");
            String video_urls = json1.getString("video_url");
            String shortcode= json1.getString("shortcode");
            System.out.println(video_urls);
            System.out.println(shortcode);
            getInfo(shortcode);
           }}

private static void getInfo(String data) {

    ArrayList<JSONObject> arrayList = new ArrayList<>();
    JSONObject postedJSON = new JSONObject();
    JSONObject ob = new JSONObject();

    postedJSON.put("shortcode", data);  
    arrayList.add(postedJSON);
    ob.put("info", arrayList);
    String variable = arrayList.toString();
}

In case if you want URL here it is : https://www.instagram.com/p/CH16_AtFZwu/?__a=1

I'm able to get all videos url and shortcode. You can see that i'm calling getInfo method inside the loop but getInfo method return me data something like this i know this is because of getInfo method is calling inside the loop.

{"info":[{"shortcode":"CHpRpJKJaov"}]}
{"info":[{"shortcode":"CHpRpJJJR2n"}]}
{"info":[{"shortcode":"CHpRpJoJgak"}]}
{"info":[{"shortcode":"CHpRpKLprpB"}]}
{"info":[{"shortcode":"CHpRpKnJbtC"}]}
{"info":[{"shortcode":"CHpRtH9Jbpy"}]}
{"info":[{"shortcode":"CHpRtUsJkng"}]}
{"info":[{"shortcode":"CHpRyzgJnMf"}]}
{"info":[{"shortcode":"CHpR9dYJdGB"}]}
{"info":[{"shortcode":"CHpR9s1Jj-2"}]}

In the end i just want to ask how can i make it without repeating the info array name like in the API which i given in the beginning.

why don't you use JSONArray? ex: https://stackoverflow.com/questions/18983185/how-to-create-correct-jsonarray-in-java-using-jsonobject — Qwer Izuken, Nov 22 '20 at 18:33

MD Ruhul Amin · Accepted Answer · 2020-11-24T07:43:31.740

Your problem lies into getinfo method. you did not add the videoUrl properly and not putting a into final json object. here is how to do it properly:

       // declare it before the loop.
       ArrayList<JSONObject> arrayList = new ArrayList<>();
       JSONObject ob = new JSONObject();

       if (obj2.getBoolean("is_video") == false) {
          System.out.println("is video false");

        for (int i = 0; i < array.length(); i++) {
            JSONObject json = array.getJSONObject(i);
            JSONObject json1 = json.getJSONObject("node");
            String video_urls = json1.getString("video_url");
            String shortcode= json1.getString("shortcode");
            System.out.println(video_urls);
            System.out.println(shortcode);

            // adding data into array list.
            arrayList.add(getInfo(shortcode, video_urls));
           }
       // finally put info into the final element.  
          ob.put("info", arrayList);
         // Now ob contains your actual data.
       }

private static JSONObject getInfo(String shortcode, String video_url) {
    JSONObject ob = new JSONObject();
    postedJSON.put("shortcode", shortcode); 
    postedJSON.put("video_url", video_url);  
    return postedJSON;
}

How to send specific data in JSON Array

1 Answers1