Volleyを使用してmysqlからJSON経由で複数行のデータを取得する方法

Question

JSONを使用して私のアンドロイドアプリに下記のphpファイルの出力を取得しようとしていますが、同様に私はしかし、私は最初の出力が、出力の残りの部分を取得することができる午前ことができ、以下の手順を実行することは

 private void getData() { 
    String id = editTextId.getText().toString().trim(); 
    if (id.equals("")) { 
     Toast.makeText(this, "Please enter an id",   Toast.LENGTH_LONG).show(); 
     return; 
    } 
    loading = ProgressDialog.show(this,"Please wait...","Fetching...",false,false); 

    String url = Constants.DATA_URL+editTextId.getText().toString().trim(); 

    StringRequest stringRequest = new StringRequest(url, new Response.Listener<String>() { 
     @Override 
     public void onResponse(String response) { 
      loading.dismiss(); 
      showJSON(response); 
     } 
       }, 
      new Response.ErrorListener() { 
       @Override 
       public void onErrorResponse(VolleyError error) { 
        Toast.makeText(OrderHistory.this,error.getMessage().toString(),Toast.LENGTH_LONG).show(); 
       } 
      }); 

    RequestQueue requestQueue = Volley.newRequestQueue(this); 
    requestQueue.add(stringRequest); 
} 

private void showJSON(String response){ 
    String name=""; 
    String address=""; 
    String vc = ""; 
    try { 
     JSONObject jsonObject = new JSONObject(response); 
     JSONArray result = jsonObject.getJSONArray(Constants.JSON_ARRAY); 
     JSONObject collegeData = result.getJSONObject(0); 
     name = collegeData.getString(Constants.KEY_NAME); 
     address = collegeData.getString(Constants.KEY_ADDRESS); 
     vc = collegeData.getString(Constants.KEY_VC); 
    } catch (JSONException e) { 
     e.printStackTrace(); 
    } 
    textViewResult.setText("Name:\t"+name+"\nAddress:\t" +address+ "\nVice  Chancellor:\t"+ vc); 
    } 

Answer 1

は、簡単に言えばあなたはまた、ループだけでなく、あなたが手動で構築正確に配列を取得しているを簡素化することができますあなたがループを完了したまでデータを送信し、

もループの外

<?php 
    define('HOST','XXXX'); 
    define('USER','XXXX'); 
    define('PASS','XXXX'); 
    define('DB','XXXX'); 
    $con = mysqli_connect(HOST,USER,PASS,DB) or die('Unable to Connect'); 
    if($_SERVER['REQUEST_METHOD']=='GET'){ 
     $customerEmail = $_GET['customerEmail']; 
     $sql = "SELECT `amount`, `customerEmail`, `CCAvenueOrder_id` FROM `OrderAborted` WHERE customerEmail='".$customerEmail."'"; 
     $r = mysqli_query($con,$sql); 

     $result = array(); 
     while($res = mysqli_fetch_array($r)) 
     { 
      //$result = array(); 
      $result[] = array(
          "customerEmail"=>$res['customerEmail'], 
          "CCAvenueOrder_id"=>$res['CCAvenueOrder_id'], 
          "amount"=>$res['amount'] 
          ); 
      //echo json_encode(array("result"=>$result)); 
     } 

     echo json_encode(array("result"=>$result)); 
     mysqli_close($con); 
    } 
?> 

を配列の初期化を移動いけません結果セットから、あなたの代わりにmysqli_fetch_array()

<?php 
    define('HOST','XXXX'); 
    define('USER','XXXX'); 
    define('PASS','XXXX'); 
    define('DB','XXXX'); 
    $con = mysqli_connect(HOST,USER,PASS,DB) or die('Unable to Connect'); 
    if($_SERVER['REQUEST_METHOD']=='GET'){ 
     $customerEmail = $_GET['customerEmail']; 
     $sql = "SELECT `amount`, `customerEmail`, `CCAvenueOrder_id` FROM `OrderAborted` WHERE customerEmail='".$customerEmail."'"; 
     $r = mysqli_query($con,$sql); 

     $result = array(); 
     while($res = mysqli_fetch_assoc($r)) 
     { 
      $result[] = $res; 
      //echo json_encode(array("result"=>$result)); 
     } 

     echo json_encode(array("result"=>$result)); 
     mysqli_close($con); 
    } 
?> 

のmysqli_fetch_assoc()を使用しても、あなたが使用している場合はそれを再度simpify場合mysqli_fetch_all()

<?php 
    define('HOST','XXXX'); 
    define('USER','XXXX'); 
    define('PASS','XXXX'); 
    define('DB','XXXX'); 
    $con = mysqli_connect(HOST,USER,PASS,DB) or die('Unable to Connect'); 
    if($_SERVER['REQUEST_METHOD']=='GET'){ 
     $customerEmail = $_GET['customerEmail']; 
     $sql = "SELECT `amount`, `customerEmail`, `CCAvenueOrder_id` FROM `OrderAborted` WHERE customerEmail='".$customerEmail."'"; 
     $r = mysqli_query($con,$sql); 

     $result = mysqli_fetch_all($r, MYSQLI_ASSOC); 

     echo json_encode(array("result"=>$result)); 
    } 
?> 

そしてSQLインジェクションベクトルを取り除くために

<?php 
    define('HOST','XXXX'); 
    define('USER','XXXX'); 
    define('PASS','XXXX'); 
    define('DB','XXXX'); 
    $con = mysqli_connect(HOST,USER,PASS,DB) or die('Unable to Connect'); 
    if($_SERVER['REQUEST_METHOD']=='GET'){ 
     //$customerEmail = $_GET['customerEmail']; 

     $sql = "SELECT `amount`, `customerEmail`, `CCAvenueOrder_id` 
       FROM `OrderAborted` 
       WHERE customerEmail=?"; 

     $stmt = mysqli_prepare($con,$sql); 

     $stmt = mysqli_stmt_bind_param ($stmt, 's', $_GET['customerEmail']); 

     $status = mysqli_execute($stmt); 

     $r = mysqli_stmt_get_result ($stmt); 

     $result = mysqli_fetch_all($r, MYSQLI_ASSOC); 

     echo json_encode(array("result"=>$result)); 
    } 
?> 

Answer 2

は、しばらくの$result = array();外を定義します私のアプリ

<?php 
    define('HOST','XXXX'); 
    define('USER','XXXX'); 
    define('PASS','XXXX'); 
    define('DB','XXXX'); 
    $con = mysqli_connect(HOST,USER,PASS,DB) or die('Unable to Connect'); 
    if($_SERVER['REQUEST_METHOD']=='GET'){ 
     $customerEmail = $_GET['customerEmail']; 
     $sql = "SELECT `amount`, `customerEmail`, `CCAvenueOrder_id` FROM `     OrderAborted` WHERE customerEmail='".$customerEmail."'"; 
     $r = mysqli_query($con,$sql); 
     while($res = mysqli_fetch_array($r)) 
     { 
      $result = array(); 
      array_push($result,array(
          "customerEmail"=>$res['customerEmail'], 
          "CCAvenueOrder_id"=>$res['CCAvenueOrder_id'], 
          "amount"=>$res['amount'] 
          ) 
      ); 
      echo json_encode(array("result"=>$result)); 
     } 
     mysqli_close($con); 
    } 
?> 

JSONコードに表示されませんループ。