title: Httppost returning html instead Json code
body: <p>here i´m in my first post.
  I´m getting started to android.</p>
  
  <p>I trying to connect my app to a webservice throu a tutorial from mybringback, but i´m getting an error with my json return. </p>
  
  <pre><code>09-12 15:54:06.717: E/JSON Parser fallha(8254): Error parsing data org.json.JSONException: End of input at character 0 of 
  </code></pre>
  
  <p>I already found the reason, it´s happen becouse It´s returning the HTML from my php page instead json. When i tried set a fix string with my json it worked. </p>
  
  <p>When i try to get the json from the browser it works fine. </p>
  
  <p>I set a Log.d in the reader and i got this:</p>
  
  <pre><code>09-12 15:35:10.807: D/Acha Erro POR FAVOR(6691):        &lt;h1&gt;Login&lt;/h1&gt; 
  09-12 15:35:10.807: D/Acha Erro(6691):      &lt;form action="login.php" method="post"&gt; 
  09-12 15:35:10.807: D/Acha Erro(6691):          Username:&lt;br /&gt; 
  09-12 15:35:10.807: D/Acha Erro(6691):          &lt;input type="text" name="username" placeholder="username" /&gt; 
  09-12 15:35:10.807: D/Acha Erro(6691):          &lt;br /&gt;&lt;br /&gt; 
  09-12 15:35:10.807: D/Acha Erro(6691):          Password:&lt;br /&gt; 
  09-12 15:35:10.807: D/Acha Erro(6691):          &lt;input type="password" name="password" placeholder="password" value="" /&gt; 
  09-12 15:35:10.807: D/Acha Erro(6691):          &lt;br /&gt;&lt;br /&gt; 
  09-12 15:35:10.807: D/Acha Erro(6691):          &lt;input type="submit" value="Login" /&gt; 
  09-12 15:35:10.807: D/Acha Erro(6691):      &lt;/form&gt; 
  09-12 15:35:10.807: D/Acha Erro(6691):      &lt;a href="register.php"&gt;Register&lt;/a&gt;
  </code></pre>
  
  <p>I´ve spent about 3 days trying to find out a way to solve that.</p>
  
  <p>Following my two classes and php</p>
  
  <pre><code>package com.example.testemysql;
  
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.logging.LogRecord;
  
  import org.apache.http.NameValuePair;
  import org.apache.http.message.BasicNameValuePair;
  import org.json.JSONException;
  import org.json.JSONObject;
  
  import android.app.Activity;
  import android.app.ProgressDialog;
  import android.content.Intent;
  import android.os.AsyncTask;
  import android.os.Bundle;
  import android.util.Log;
  import android.view.View;
  import android.view.View.OnClickListener;
  import android.widget.Button;
  import android.widget.EditText;
  import android.widget.Toast;
  
  public class MainActivity extends Activity implements OnClickListener{
  
      private EditText user, pass;
      private Button mSubmit, mRegister;
  
       // Progress Dialog
      private ProgressDialog pDialog;
  
      // JSON parser class
      JSONParser jsonParser = new JSONParser();
  
      //php login script location:
  
      //localhost :  
      //testing on your device
      //put your local ip instead,  on windows, run CMD &gt; ipconfig
      //or in mac's terminal type ifconfig and look for the ip under en0 or en1
     // private static final String LOGIN_URL = "http://xxx.xxx.x.x:1234/webservice/login.php";
  
      //testing on Emulator:
      private static final String LOGIN_URL = "http://www.bazarsol.6te.net/ANDROID/login.php";
  
    //testing from a real server:
      //private static final String LOGIN_URL = "http://www.yourdomain.com/webservice/login.php";
  
      //JSON element ids from repsonse of php script:
      private static final String TAG_SUCCESS = "success";
      private static final String TAG_MESSAGE = "message";
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          // TODO Auto-generated method stub
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
  
          //setup input fields
          user = (EditText)findViewById(R.id.username);
          pass = (EditText)findViewById(R.id.password);
  
          //setup buttons
          mSubmit = (Button)findViewById(R.id.login);
          mRegister = (Button)findViewById(R.id.register);
  
          //register listeners
          mSubmit.setOnClickListener(this);
          mRegister.setOnClickListener(this);
  
      }
  
      @Override
      public void onClick(View v) {
          // TODO Auto-generated method stub
          switch (v.getId()) {
          case R.id.login:
              new AttemptLogin().execute();   
              break;
          case R.id.register:
                  //Intent i = new Intent(this, Register.class);
                  //startActivity(i);
              break;
  
          default:
              break;
          }
      }
  
      class AttemptLogin extends AsyncTask&lt;String, String, String&gt; {
  
           /**
           * Before starting background thread Show Progress Dialog
           * */
          boolean failure = false;
  
          @Override
          protected void onPreExecute() {
              super.onPreExecute();
              pDialog = new ProgressDialog(MainActivity.this);
              pDialog.setMessage("Attempting login...");
              pDialog.setIndeterminate(false);
              pDialog.setCancelable(true);
              pDialog.show();
          }
  
          @Override
          protected String doInBackground(String... args) {
              // TODO Auto-generated method stub
               // Check for success tag
              int success;
              String username = user.getText().toString();
              String password = pass.getText().toString();
              try {
                  // Building Parameters
                  List&lt;NameValuePair&gt; params = new ArrayList&lt;NameValuePair&gt;();
                  params.add(new BasicNameValuePair("username", username));
                  params.add(new BasicNameValuePair("password", password));
  
  
                  Log.d("URL",LOGIN_URL);
                 Log.d("PARAMETROS",""+ params);
  
                  Log.d("request!", "starting");
                  // getting product details by making HTTP request
                  JSONObject json = jsonParser.makeHttpRequest(
                          LOGIN_URL, "POST", params);
  
                  // check your log for json response
                  Log.d("Login attempt", json.toString());
  
  
                  // json success tag
                  success = json.getInt(TAG_SUCCESS);
                  if (success == 1) {
                      //Log.d("Login Successful!", json.toString());
                      Log.d("Login Successful!", "");
                      //Intent i = new Intent(Login.this, ReadComments.class);
                      finish();
                      //startActivity(i);
                      return json.getString(TAG_MESSAGE);
                  }else{
                      Log.d("Login Failure!", json.getString(TAG_MESSAGE));
                      return json.getString(TAG_MESSAGE);
  
                  }
              } catch (JSONException e) {
                  e.printStackTrace();
              }
  
              return null;
  
          }
          /**
           * After completing background task Dismiss the progress dialog
           * **/
          protected void onPostExecute(String file_url) {
              // dismiss the dialog once product deleted
              pDialog.dismiss();
              if (file_url != null){
                  Toast.makeText(MainActivity.this, file_url, Toast.LENGTH_LONG).show();
              }
  
          }
  
      }
  
  
  }
  </code></pre>
  
  <p>JSONParser</p>
  
  <pre><code>package com.example.testemysql;
  
  
  import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.UnsupportedEncodingException;
  import java.util.List;
  
  import org.apache.http.HttpEntity;
  import org.apache.http.HttpResponse;
  import org.apache.http.NameValuePair;
  import org.apache.http.client.ClientProtocolException;
  import org.apache.http.client.entity.UrlEncodedFormEntity;
  import org.apache.http.client.methods.HttpGet;
  import org.apache.http.client.methods.HttpPost;
  import org.apache.http.client.utils.URLEncodedUtils;
  import org.apache.http.impl.client.DefaultHttpClient;
  import org.json.JSONException;
  import org.json.JSONObject;
  
  
  import android.util.Log;
  
  public class JSONParser {
  
      static InputStream is = null;
      static JSONObject jObj = null;
      static String json = "";
  
      // constructor
      public JSONParser() {
  
      }
  
      // function get json from url
      // by making HTTP POST or GET mehtod
      public JSONObject makeHttpRequest(String url, String method,
              List&lt;NameValuePair&gt; params) {
  
          // Making HTTP request
          try {
  
              // check for request method
              if(method == "POST"){
                  // request method is POST
                  // defaultHttpClient
                  DefaultHttpClient httpClient = new DefaultHttpClient();
                  HttpPost httpPost = new HttpPost(url);
  
                  httpPost.setEntity(new UrlEncodedFormEntity(params));
                  HttpResponse httpResponse = httpClient.execute(httpPost);
                  HttpEntity httpEntity = httpResponse.getEntity();
                  is = httpEntity.getContent();
                  Log.d("Acha o erro POR FAVOR ajuda",""+ httpResponse);
  
              }else if(method == "GET"){
                  // request method is GET
                  DefaultHttpClient httpClient = new DefaultHttpClient();
                  String paramString = URLEncodedUtils.format(params, "utf-8");
                  url += "?" + paramString;
                  HttpGet httpGet = new HttpGet(url);
  
                  HttpResponse httpResponse = httpClient.execute(httpGet);
                  HttpEntity httpEntity = httpResponse.getEntity();
                  is = httpEntity.getContent();
              }           
  
          } catch (UnsupportedEncodingException e) {
              e.printStackTrace();
          } catch (ClientProtocolException e) {
              e.printStackTrace();
          } catch (IOException e) {
              e.printStackTrace();
          }
  
          try {
              //BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
              BufferedReader reader = new BufferedReader(new InputStreamReader(is,"UTF-8"));
              Log.d("Acha Erro POR FAVOR",""+ reader.readLine());
              StringBuilder sb = new StringBuilder();
              String line = null;
              while ((line = reader.readLine()) != null) {
                  sb.append(line + "\n");
              }
              is.close();
              json = sb.toString();
              Log.d("Acha Erro", json);
          } catch (Exception e) {
              Log.e("Buffer Error", "Error converting result " + e);
          }
  
          // try parse the string to a JSON object
          try {
              jObj = new JSONObject(json);
          } catch (JSONException e) {
              Log.e("JSON Parser fallha", "Error parsing data " + e.toString());
          }
  
          // return JSON String
          return jObj;
  
      }
  }
  </code></pre>
  
  <p><strong>PHP - UPDATED</strong></p>
  
  <pre><code>&lt;?php
  
  //load and connect to MySQL database stuff
  require("config.inc.php");
  
  //gets user's info based off of a username.
  $query = " 
          SELECT 
              indice, 
              usuario, 
              senha
          FROM usuarios 
          WHERE 
              usuario = :username 
      ";
  
  $query_params = array(
      ':username' =&gt; $_POST["username"]
  );
  
  try {   
      $stmt   = $db-&gt;prepare($query);
      $result = $stmt-&gt;execute($query_params);
      print_r($_REQUEST);
      print_r (var_dump($_POST));
      print_r(get_headers());
  
      }
  catch (PDOException $ex) {
      // For testing, you could use a die and message. 
      //die("Failed to run query: " . $ex-&gt;getMessage());
  
      //or just use this use this one to product JSON data:
      $response["success"] = 0;
      $response["message"] = "Database Error1. Please Try Again!2";
      echo "Bruno 2";
      die(json_encode($response&amp;$ex));
  
  }
  
  //This will be the variable to determine whether or not the user's information is correct.
  //we initialize it as false.
  $validated_info = false;
  
  //fetching all the rows from the query
  $row = $stmt-&gt;fetch();
  if ($row) {
      //if we encrypted the password, we would unencrypt it here, but in our case we just
      //compare the two passwords
      if ($_POST["password"] === $row["senha"]) {
          $login_ok = true;
      }
  }
  
  // If the user logged in successfully, then we send them to the private members-only page 
  // Otherwise, we display a login failed message and show the login form again 
  if ($login_ok) {
      $response["success"] = 1;
      $response["message"] = "Login successful!";
      die(json_encode($response));
  } else {
      $response["success"] = 0;
      $response["message"] = "Invalid Credentials!";
      die(json_encode($response));
  }?&gt;
  </code></pre>
  
  <p><strong>RESULTS</strong></p>
  
  <pre><code>09-16 16:58:00.687: D/Acha o erro POR FAVOR ajuda(29176):org.apache.http.message.BasicHttpResponse@42680990
  09-16 16:58:00.687: D/Acha Erro POR FAVOR(29176): Array
  09-16 16:58:00.687: D/Acha Erro(29176): (
  09-16 16:58:00.687: D/Acha Erro(29176): )
  09-16 16:58:00.687: D/Acha Erro(29176): array(0) {
  09-16 16:58:00.687: D/Acha Erro(29176): }
  09-16 16:58:00.687: D/Acha Erro(29176): {"success":0,"message":"Invalid Credentials!"}
  </code></pre>