如何从凌空请求发送arraylist数据并获取php [英] How can send arraylist data from volley request and get in php

问题描述

我想从凌空requset向php发送字符串数据的ID和数组列表.但是我不确定如何正确发送到服务器以及如何在php中获取它. 这是向服务器发送请求的android端:

I want to send a ID and array list of string data to php from volley requset . but i'm not sure how can send correctly to server and how can get it in php . Here is android side to send request to server:

private void sendMessage() {

 StringRequest stringRequest = new StringRequest(Request.Method.POST, Config.NOTIF_URL,
  new Response.Listener < String > () {
   @Override
   public void onResponse(String response) {

    Log.d("Response --->", response);
    jsonNotif = new ParseJSON(response);
    jsonNotif.parseJSON();

   }
  },
  new Response.ErrorListener() {
   @Override
   public void onErrorResponse(VolleyError error) {
    Toast.makeText(context, error.getMessage(), Toast.LENGTH_LONG).show();
   }
  }) {
  @Override
  protected Map < String, String > getParams() throws AuthFailureError {
   Map < String, String > params = new HashMap < > ();
   //Adding parameters to request

   ArrayList < String > courseList = new ArrayList < String > (checkedSet);

   String ID = prefProfID.getString(Config.PROFID_SHARED_PREF, "0");
   Log.d("ID prof list >>", ID);
   params.put(Config.PROFID_SHARED_PREF, ID);


   for (int i = 0; i < courseList.size(); i++) {
    params.put("courselist", courseList.get(i));
   }
   //returning parameter
   return params;
  }
 };
 RequestQueue requestQueue = Volley.newRequestQueue(context);
 requestQueue.add(stringRequest);

}

这是我的php代码:

<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    //Getting values 
    $courseList = $_POST['courseList'];
    $professor_ID = $_POST['Prof_ID'];
    require_once('dbConnect.php');
    $newcourseList = implode(", ", $courseList);
    $sql           = "select Stud_ID,student.f_Name,student.l_Name from student,course     where course.S_ID = student.Stud_ID and course.P_ID in ($newcourseList)";
    $res    = mysqli_query($con, $sql);
    $result = array();
    while ($row = mysqli_fetch_array($res)) {
        array_push($result, array(
            'id' => $row[0],
            'fname' => $row[1],
            'lname' => $row[2],
            'tag' => 'studlist'
        ));
    }
    echo json_encode(array(
        "result" => $result
    ));
    mysqli_close($con);
}
?>

推荐答案

如果要发送ArrayList数据，我认为将其转换为JSONArray来发送它会更好

If you want to send ArrayList data, I think its better to send it by Converting it into JSONArray

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