Parsing JSON from YouTube API
I have a URL: https://gdata.youtube.com/feeds/api/users/charlieissocoollike/uploads?alt=jsonc&v=2 which supplies JSON information on latest youtube uploads from a user.
I have written some code to parse this JSON data but I don't understand how JSON works and how to parse it in Java.
public void getVideoData() throws ClientProtocolException, JSONException, IOException {
JSONObject object = 开发者_开发技巧(JSONObject) new JSONTokener(getVideoJSON().toString()).nextValue();
//String query = object.getString("data");
JSONArray locations = object.getJSONArray("data");
output.setText(locations.getString(1));
}
public JSONObject getVideoJSON () throws ClientProtocolException, IOException, JSONException {
final String URL = "https://gdata.youtube.com/feeds/api/users/charlieissocoollike/uploads?alt=jsonc&v=2";
StringBuilder url = new StringBuilder(URL);
HttpGet get = new HttpGet(url.toString());
HttpResponse r = client.execute(get);
int status = r.getStatusLine().getStatusCode();
HttpEntity e = r.getEntity();
String data = EntityUtils.toString(e);
JSONArray VideoData = new JSONArray(data);
JSONObject video = VideoData.getJSONObject(0);
return video;
}
How should I pull the video id, title and description from the JSON Data of each video object?
In http://www.json.org/ has a parser implemented in JAVA.
You're almost there. What you need is:
JSONObject json = new JSONObject(data);
JSONObject dataObject = json.getJSONObject("data"); // this is the "data": { } part
JSONArray items = dataObject.getJSONArray("items"); // this is the "items: [ ] part
Then you can traverse over each video:
for (int i = 0; i < items.length(); i++) {
JSONObject videoObject = items.getJSONObject(i);
String title = videoObject.getString("title");
String videoId = videoObject.getString("id");
}
You'd be better off using the official client library: http://code.google.com/apis/youtube/2.0/developers_guide_java.html#Retrieving_user_activity_feeds
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