error parsing json data (value of type java.lang.String cannot be converted to json array)


i am trying to implement simple android application where i am trying to retrieve the database values over php site, but the following code generates error parsing json data.

my php file encoding json is as below

getdeals.php <?php $host="localhost"; // Host name $username="root"; // Mysql username $password=""; // Mysql password $db_name="user"; // Database name $tbl_name="deal"; // Table name // Connect to server and select databse. mysql_connect("$host","$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB"); $q=mysql_query("SELECT * FROM deal"); while($e=mysql_fetch_assoc($q)) $output[]=$e; print(json_encode($output)); mysql_close(); ?>

table deal is as below <img alt="table deal" class="b-lazy" data-src="https://i.stack.imgur.com/OJ5qT.png" data-original="https://i.stack.imgur.com/OJ5qT.png" src="https://etrip.eimg.top/images/2019/05/07/timg.gif" />

android class is as below

public class JsonConnect extends Activity { InputStream is; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_json_connect); addListenerOnbutton(); Thread t = new Thread() { public void run() { getDeals(); } }; t.start(); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_json_connect, menu); return true; } public void addListenerOnbutton() { final Context context = this; Button home = (Button)findViewById(R.id.button1); home.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { finish(); } }); } public void getDeals() { String result = ""; //the year data to send //ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(); //nameValuePairs.add(new BasicNameValuePair("year","1980")); //http post try{ HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost(""); //httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); HttpResponse response = httpclient.execute(httppost); HttpEntity entity = response.getEntity(); is = entity.getContent(); } catch(Exception e){ Log.e("log_tag", "Error in http connection "+e.toString()); } //convert response to string try{ BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8); StringBuilder sb = new StringBuilder(); String line = null; while ((line = reader.readLine()) != null) { sb.append(line + "\n"); } is.close(); result=sb.toString(); }catch(Exception e){ Log.e("log_tag", "Error converting result "+e.toString()); } //parse json data try{ JSONArray jArray = new JSONArray(result); for(int i=0;i<jArray.length();i++){ JSONObject json_data = jArray.getJSONObject(i); Log.i("log_tag","dealid: "+json_data.getString("deal_id")+ ", hotel name: "+json_data.getString("hotel_name")+ ", valid date: "+json_data.getInt("valid_date")+ ", location: "+json_data.getString("location")+ ", website: "+json_data.getString("website") ); } } catch(JSONException e){ Log.e("log_tag", "Error parsing data "+e.toString()); } } }

and finally logcat output is

05-11 01:23:08.767: D/dalvikvm(435): GC_EXPLICIT freed 24K, 4% free 6582K/6855K, paused 7ms+4ms 05-11 01:29:24.164: V/TLINE(497): new: android.text.TextLine@4065aa30 05-11 01:29:24.757: D/dalvikvm(497): GC_CONCURRENT freed 115K, 4% free 6560K/6791K, paused 5ms+14ms 05-11 01:29:24.764: E/log_tag(497): Error parsing data org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONArray 05-11 01:29:24.844: V/TLINE(497): new: android.text.TextLine@4065d8e0 05-11 01:34:12.147: D/dalvikvm(497): GC_EXPLICIT freed 48K, 4% free 6524K/6791K, paused 7ms+3ms

how can i get the desired values of the table

please help.


The response returned by PHP script is not in valid JSON format.

You need to put $output=array(); somewhere before the while loop


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