Android Mysql Connection Error

Question

Hey Jungs Ich versuche, Registrierungsseite mit mysqli und PHP für Backend und Java für Front-End zu machen. Meine PHP Connection Datei funktioniert Datei, auch wenn ich Daten eingefügt habe, als ich versuchte, Daten mit Android-Anwendung einzufügen, die es nicht einfügt, und sogar es zeigt keinen Fehler im Protokoll.

Ich bin Begginer in Android. Bitte verzeihen Sie, wenn Sie einen Fehler gefunden haben.

Hier ist meine Datei einfügen

require_once('dbConnect.php'); 


$email = $_POST['email']; 
$password = $_POST['password']; 
$full_name = $_POST['full_name']; 
$registration_num = $_POST['registration_num']; 
$contact_num = $_POST['contact_num']; 



$sql = "INSERT INTO tblregistration (Email, Password,Full_name,Registration_number,Contact_number) VALUES ($email,$password,$full_name,$registration_num,$contact_num)"; 

if(mysqli_query($con,$sql)) { 
    echo "Successful"; 
} 

mysqli_close($con); 

Hier ist meine Registrierung Seite ist

b1 = (Button)findViewById(R.id.button); 
    b1.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 

      str_email = "a"; 
      str_password = "a"; 
      str_full_name = "a"; 
      str_registration_num = "a"; 
      str_contact_number = "a"; 
      new InsertData().execute(); 
     } 
    }); 

private class InsertData extends AsyncTask<String, Void, String> { 

    String JSON_STRING; 
    JSONObject jsonObject = null; 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
    } 

    @Override 
    protected void onPostExecute(String s) { 
     super.onPostExecute(s); 

      Toast.makeText(getApplicationContext(), s, Toast.LENGTH_SHORT).show(); 

    } 

    @Override 
    protected String doInBackground(String... params) { 

     JSONParser rh = new JSONParser(); 

     HashMap<String, String> data = new HashMap<>(); 

     data.put("email", str_email); 
     data.put("password", str_password); 
     data.put("full_name", str_full_name); 
     data.put("registration_num", str_registration_num); 
     data.put("contact_num", str_contact_number); 

     JSON_STRING = rh.sendPostRequest(AppConfig.URL_REGISTER, data); 

     return JSON_STRING; 
    } 
} 

Hier ist meine HttpURLConnection Datei

public String sendPostRequest(String requestURL, 
           HashMap<String, String> postDataParams) { 
    //Creating a URL 
    URL url; 

    //StringBuilder object to store the message retrieved from the server 
    StringBuilder sb = new StringBuilder(); 
    try { 
     //Initializing Url 
     url = new URL(requestURL); 

     //Creating an httmlurl connection 
     HttpURLConnection conn = (HttpURLConnection) url.openConnection(); 

     //Configuring connection properties 
     conn.setReadTimeout(15000); 
     conn.setConnectTimeout(15000); 
     conn.setRequestMethod("POST"); 
     conn.setDoInput(true); 
     conn.setDoOutput(true); 

     //Creating an output stream 
     OutputStream os = conn.getOutputStream(); 

     //Writing parameters to the request 
     //We are using a method getPostDataString which is defined below 
     BufferedWriter writer = new BufferedWriter(
       new OutputStreamWriter(os, "UTF-8")); 
     writer.write(getPostDataString(postDataParams)); 

     writer.flush(); 
     writer.close(); 
     os.close(); 
     int responseCode = conn.getResponseCode(); 

     if (responseCode == HttpsURLConnection.HTTP_OK) { 

      BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream())); 
      sb = new StringBuilder(); 
      String response; 
      //Reading server response 
      while ((response = br.readLine()) != null){ 
       sb.append(response); 
      } 
     } 

    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    return sb.toString(); 
} 


private String getPostDataString(HashMap<String, String> params) throws UnsupportedEncodingException { 
    StringBuilder result = new StringBuilder(); 
    boolean first = true; 
    for (Map.Entry<String, String> entry : params.entrySet()) { 
     if (first) 
      first = false; 
     else 
      result.append("&"); 

     result.append(URLEncoder.encode(entry.getKey(), "UTF-8")); 
     result.append("="); 
     result.append(URLEncoder.encode(entry.getValue(), "UTF-8")); 
    } 

    return result.toString(); 
} 

Answer 1

Alles sieht gut aus. Verwenden Sie das richtige JSON-Format ... !!!