Receiving JSON Exception "Unterminated Array" while parsing html data

Question

I'm trying to access the google books api and retrieve the list of books according to the keyword entered by the user. While trying to parse the Json Data I receive the following error:

The method I am using to parse JSON data:

W/System.err: org.json.JSONException: Unterminated array at character 11 of [C@425e2fb8

W/System.err:     at org.json.JSONTokener.syntaxError(JSONTokener.java:450)

W/System.err:     at org.json.JSONTokener.readArray(JSONTokener.java:440)

W/System.err:     at org.json.JSONTokener.nextValue(JSONTokener.java:103)

W/System.err:     at org.json.JSONObject.<init>(JSONObject.java:155)

W/System.err:     at org.json.JSONObject.<init>(JSONObject.java:172)

W/System.err:     at com.example.android.booklisting.BookListingActivity.readIt(BookListingActivity.java:167)

W/System.err:     at com.example.android.booklisting.BookListingActivity.downloadUrl(BookListingActivity.java:145)

W/System.err:     at com.example.android.booklisting.BookListingActivity.access$100(BookListingActivity.java:39)

W/System.err:     at com.example.android.booklisting.BookListingActivity$DownloadWebpageTask.doInBackground(BookListingActivity.java:96)

W/System.err:     at com.example.android.booklisting.BookListingActivity$DownloadWebpageTask.doInBackground(BookListingActivity.java:90)

W/System.err:     at android.os.AsyncTask$2.call(AsyncTask.java:288)

W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:237)

W/System.err:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)

W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)

W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)

W/System.err:     at java.lang.Thread.run(Thread.java:841)

com.example.android.booklisting I/dalvikvm: Could not find method android.widget.ArrayAdapter.getDropDownViewTheme, referenced from method    com.example.android.booklisting.BooksAdapter.access$super

The Method that I am using to Parse the JSON data:

  public String readIt(InputStream stream, int len) throws IOException, UnsupportedEncodingException {
    Reader reader = null;
    reader = new InputStreamReader(stream, "UTF-8");
    char[] buffer = new char[len];
    reader.read(buffer);
    String jdata = buffer.toString();

    try {
        JSONObject jsonobject = new JSONObject(jdata);
        JSONArray jarray = (JSONArray) jsonobject.getJSONArray("items");

        for (int i = 0; i < jarray.length(); i++) {
            JSONObject volumeInfo = jarray.getJSONObject(i).getJSONObject("volumeInfo");
            String title = volumeInfo.getString("title");
            JSONArray authors = volumeInfo.getJSONArray("authors");
            for (int j = 0; j < authors.length(); j++) {
                String author = authors.getString(i);
                books.add(new Book(title,author));
            }

        }
    } catch (JSONException e) {
        e.printStackTrace();
    }


    return new String(buffer);

}

Any idea as to where I might be going wrong in parsing ?? This is my first parsing program.

check my answer and if it not work then put your json response here — Vickyexpert
– Vickyexpert, Commented Jul 2, 2016 at 5:51

Kevin Kopf · Accepted Answer · 2016-08-30 16:13:38Z

1

I think error is in your for loop of author so changed it by below code,

for (int j = 0; j < authors.length(); j++)
{
    String author = authors.getString(j);
    books.add(new Book(title,author));
}

edited Aug 30, 2016 at 16:13

Kevin Kopf

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answered Jul 2, 2016 at 5:50

Vickyexpert

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Comments

Muhammad Waleed · Accepted Answer · 2016-07-02 06:34:22Z

There are indexing Exception in you code. change to String author = authors.getString(i); to String author = authors.getString(j);

  public String readIt(InputStream stream, int len) throws IOException, UnsupportedEncodingException {
    Reader reader = null;
    reader = new InputStreamReader(stream, "UTF-8");
    char[] buffer = new char[len];
    reader.read(buffer);
    String jdata = buffer.toString();

    try { 
        JSONObject jsonobject = new JSONObject(jdata);
        JSONArray jarray = (JSONArray) jsonobject.getJSONArray("items");

        for (int i = 0; i < jarray.length(); i++) {
            JSONObject volumeInfo = jarray.getJSONObject(i).getJSONObject("volumeInfo");
            String title = volumeInfo.getString("title");
            JSONArray authors = volumeInfo.getJSONArray("authors");
            for (int j = 0; j < authors.length(); j++) {
                String author = authors.getString(j);
                books.add(new Book(title,author));
            } 

        } 
    } catch (JSONException e) {
        e.printStackTrace();
    } 


    return new String(buffer);

}

Kevin Kopf · Accepted Answer · 2016-08-30 16:14:50Z

0

Check jdata with your JSON response may be you didn't write full string in jdata

please try this to get full string from InputStream

BufferedReader r = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder total = new StringBuilder();
String line;

while ((line = r.readLine()) != null)
{
    total.append(line).append('\n');
}

edited Aug 30, 2016 at 16:14

Kevin Kopf

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answered Jul 2, 2016 at 6:42

Manthan Patel

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