Cant retrieve JSONArray from IP server but I can from normal server?

Question

Im migrating a service from a normal domain DNS server to a IP only server and this provides a json service for my app, the problem is I cant retrieve the JSONArray with the following code in the new URL:

 protected JSONArray doInBackground(String... arg0) {
                String reponse;

                try{
                    HttpClient httpclient = new DefaultHttpClient();
                    HttpPost httppost = new HttpPost(url);
                    HttpResponse responce = httpclient.execute(httppost);
                    HttpEntity httpEntity = responce.getEntity();
                    reponse = EntityUtils.toString(httpEntity);
                    return new JSONArray(reponse);
                    //With the oldURL I printed the JSON as a string and everithing OK but the new URL returns a null string of JSON
                }catch(Exception e){
                    e.printStackTrace();

                }


                return null;
            }

String newurlexample = "http://111.22.333.44:1234/FOLD/blablabla";

String oldurl = "https:/example.com/FOLD/file.json";

And I get the following LOG:

    07-13 17:47:02.142: W/System.err(18824): org.json.JSONException: Value Method of type java.lang.String cannot be converted to JSONArray
07-13 17:47:02.145: W/System.err(18824):    at org.json.JSON.typeMismatch(JSON.java:111)
07-13 17:47:02.145: W/System.err(18824):    at org.json.JSONArray.<init>(JSONArray.java:96)
07-13 17:47:02.146: W/System.err(18824):    at org.json.JSONArray.<init>(JSONArray.java:108)
07-13 17:47:02.146: W/System.err(18824):    at com.karlol.***.Doctor_Fragment$GetData.doInBackground(Doctor_Fragment.java:171)
07-13 17:47:02.146: W/System.err(18824):    at com.karlol.***.Doctor_Fragment$GetData.doInBackground(Doctor_Fragment.java:1)
07-13 17:47:02.147: W/System.err(18824):    at android.os.AsyncTask$2.call(AsyncTask.java:288)
07-13 17:47:02.147: W/System.err(18824):    at java.util.concurrent.FutureTask.run(FutureTask.java:237)
07-13 17:47:02.147: W/System.err(18824):    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
07-13 17:47:02.147: W/System.err(18824):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)

Answer 1

From the title of your question I can notice that there is something wrong between the URL you were using and the new ip .. first you need to make sure your new web-service provide the same result as the old one .. any way you can try to retrieve your data using this :

try{
       HttpClient httpclient = new DefaultHttpClient();
       HttpPost httppost = new HttpPost(url);
       HttpResponse responce = httpclient.execute(httppost);
       HttpEntity httpEntity = responce.getEntity();
       is = httpEntity.getContent();
       BufferedReader reader = new BufferedReader(new InputStreamReader(
            is));

      StringBuilder sb = new StringBuilder();
      String line = null;
      while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
            is.close();
        reponse = sb.toString();


       return new JSONArray(reponse);
       //With the oldURL I printed the JSON as a string and everithing OK but the new URL returns a null string of JSON

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

}

EDIT:

If you use shared hosting server.. it is not uncommon to have multiple web sites on the same IP, distinguished only by the site name (so-called virtual hosting). What you are doing will only work for the case where there is a single site on a given IP.

EDIT 2

You need to test your webservice using a RESTful plugin (chrome or firefox) i.e., Advanced rest client

Answer 2

We have the same problem before try to use this. change the one inside your try and catch with this. hope it helps.

      FileCache filecache;


String result="";
                HttpURLConnection conn = null;
                String finalurl="http://111.22.333.44:1234/FOLD/blablabla";
                filecache = new FileCache(context);
                File f = filecache.getFile(finalurl);
                try {
                    URL url = new URL(finalurl);
                    conn = (HttpURLConnection) url.openConnection();
                    conn.setConnectTimeout(30000);
                    conn.setReadTimeout(30000);
                    conn.setInstanceFollowRedirects(true);
                    InputStream is = conn.getInputStream();
                    OutputStream os = new FileOutputStream(f);
                    Utils.CopyStream(is, os);
                    FileReader isr = new FileReader(f);
                    BufferedReader reader = new BufferedReader(isr);
                    StringBuilder sb = new StringBuilder();
                    String line = null;

                    while ((line = reader.readLine()) != null) {
                        sb.append(line + "\n");
                    }
                    result = sb.toString();
                    is.close();
                    os.close();
                    conn.disconnect();
                    return new JSONArray(result);
                }catch (Exception ex) {
                    Log.e("Error", ex+"can't access" + finalurl + result);
                }

FileCache.java

import android.content.Context;
import java.io.File;

    /**
     * Created by cristiana214 on 1/26/2015.
     */
    public class FileCache {
        private File cacheDir;
        public FileCache(Context context) {
            // Find the dir to save cached images
            if (android.os.Environment.getExternalStorageState().equals(
                    android.os.Environment.MEDIA_MOUNTED)) {
                cacheDir = new File(context.getExternalCacheDir(),"folder/i");
            } else
                cacheDir = context.getCacheDir();
            if (!cacheDir.exists())
                cacheDir.mkdirs();
        }

        public File getFile(String url) {
            String filename = String.valueOf(url.hashCode());
            File f = new File(cacheDir, filename);
            return f;
        }
        public void clear() {
            File[] files = cacheDir.listFiles();
            if (files == null)
                return;
            for (File f : files)
                f.delete();
        }
    }

Utils.java

import java.io.InputStream;
import java.io.OutputStream;

/**
 * Created by cristiana214 on 1/26/2015.
 */
public class Utils  {
    public static void CopyStream(InputStream is, OutputStream os){
        final int buffer_size=1024*10;
        try{
            byte[] bytes=new byte[buffer_size];
            for(;;){
                int count=is.read(bytes, 0, buffer_size);
                if(count==-1)
                    break;
                os.write(bytes, 0, count);
            }
        }
        catch(Exception ex){}
    }
}

Answer 3

According to your error code

org.json.JSONException: Value Method of type java.lang.String cannot be converted to JSONArray

you are trying to convert a String to JSONArray. there is also a pointer to doInBackground task, line 171 so you should definitely check this line. I guess the problem is around these lines:

reponse = EntityUtils.toString(httpEntity);
return new JSONArray(reponse);