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Thread: Exception while reading JSON object

  1. #1
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    Question Exception while reading JSON object

    Error while reading JSON object. Below is my JSON object :
    {"website":"http://developers.facebook.com","link":"http://www.facebook.com/FacebookDevelopers","about":"Grow your app with Facebook\nhttps://developers.facebook.com/ ","id":"19292868552","username":"FacebookDeveloper s","category":"Product/service","cover":{"source":"http://sphotos-b.xx.fbcdn.net/hphotos-ash4/s720x720/377655_10151298218353553_500025775_n.png","cover_i d":"10151298218353553","offset_y":0},"name":"Faceb ook Developers","likes":1141231,"were_here_count":0,"c ompany_overview":"Facebook Platform enables anyone to build social apps on Facebook, mobile, and the web.\n\n","is_published":true,"talking_about_count ":31759}

    Follwong is the error iam getting while reading the JSON object:
    "org.json.JSONException: JSONArray[6] not a string."
    How could i solv the exception?

    Thanks in advance.


  2. #2
    Administrator copeg's Avatar
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    Default Re: Exception while reading JSON object

    You haven't provided any code with which to let us inspect, which leaves things open to guessing. My guess: the sixth element in the JSON array is not a String - it is an array/Map

  3. #3
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    Default Re: Exception while reading JSON object

    Thanks for the support.

    Below is the code:

    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.Reader;
    import java.net.URL;
    import java.nio.charset.Charset;
    import java.util.StringTokenizer;
    import java.util.logging.Logger;

    import org.json.JSONArray;
    import org.json.JSONException;
    import org.json.JSONObject;

    public class JsonReader {

    private static String readAll(Reader rd) throws IOException {
    StringBuilder sb = new StringBuilder();
    int cp;
    while ((cp = rd.read()) != -1) {
    sb.append((char) cp);
    }
    return sb.toString();
    }

    public static JSONObject readJsonFromUrl(String url) throws IOException, JSONException {
    InputStream is = new URL(url).openStream();
    try {
    BufferedReader rd = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
    String jsonText = readAll(rd);
    JSONObject json = new JSONObject(jsonText);
    String inputLine = null;
    while ((inputLine = rd.readLine()) != null)
    System.out.println(inputLine);

    return json;
    } finally {
    is.close();
    }
    }

    public static void parseProfilesJson(String the_json){

    try {
    JSONObject myjson = new JSONObject(the_json);

    JSONArray nameArray = myjson.names();
    JSONArray valArray = myjson.toJSONArray(nameArray);
    for(int i=0;i<valArray.length();i++)
    {
    String p = nameArray.getString(i) + "," + valArray.getString(i);
    System.out.println("----p-----"+p);
    //Logger.i("p",p);
    }

    } catch (JSONException e) {
    e.printStackTrace();
    }
    }
    public static void main(String[] args) throws IOException, JSONException {
    JSONObject json = readJsonFromUrl("https://graph.facebook.com/19292868552");

    System.out.println("--json.toString()--- " +json.toString());
    parseProfilesJson(json.toString());
    }
    }

    Thanks.

  4. #4
    Administrator copeg's Avatar
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    Default Re: Exception while reading JSON object

    As I mentioned above, the sixth element in the JSON object is not a String, it is an array - try using the getJSONArray method

  5. #5
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    Default Re: Exception while reading JSON object

    Ok,Thank you.

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