android volley 发布 json ID 并从 PHP 服务器获取结果

Question

我正在努力完成这项工作，基本上我使用 Intent 从以前的 Activity 中获得了一个 ID，现在我想将这个 ID 发送到服务器，以便它返回与这个 ID 关联的所有数据。

java代码

final String URL = "URL";
// Post params to be sent to the server
HashMap<String, String> params = new HashMap<String, String>();
params.put("ID", "1");

JsonObjectRequest req = new JsonObjectRequest(URL, new JSONObject(params),
       new Response.Listener<JSONObject>() {
           @Override
           public void onResponse(JSONObject response) {
               try {
                   VolleyLog.v("Response:%n %s", response.toString(4));
                    print response in textview;
               } catch (JSONException e) {
                   e.printStackTrace();
               }
           }
       }, new Response.ErrorListener() {
           @Override
           public void onErrorResponse(VolleyError error) {
               VolleyLog.e("Error: ", error.getMessage());
           }
       });

// add the request object to the queue to be executed
ApplicationController.getInstance().addToRequestQueue(req);

PHP 服务器

if (!empty($_POST)) {

    $query = " SELECT * FROM table WHERE ID = :ID " ;

    $query_params = array(
        ':ID' => $_POST['ID'],);

    try {
        $statement   = $db->prepare($query);
        $result = $statement->execute($query_params);
    }
    catch (PDOException $ex) {


        $response["success"] = 0;
        $response["message"] = "Database query error";
        die(json_encode($response));

    }

    $result = $statement->fetchAll();

    if($result){

            $data =array();

            foreach($result as $rows){
        $json = array();
        $json["Name"] = $rows["Name"];





        array_push ($data,$json);



            }
     echo stripcslashes(json_encode($data, JSON_PRETTY_PRINT));

Answer 1

我用了这个例子 http://www.itsalif.info/content/android-volley-tutorial-http-get-post-put并将字符串响应转换为字符串数组，对我有用

url = "http://httpbin.org/post";
    StringRequest postRequest = new StringRequest(Request.Method.POST, url, 
        new Response.Listener<String>() 
        {
            @Override
            public void onResponse(String response) {
                // response
                Log.d("Response", response);
            }
        }, 
        new Response.ErrorListener() 
        {
             @Override
             public void onErrorResponse(VolleyError error) {
                 // error
                 Log.d("Error.Response", response);
           }
        }
    ) {     
        @Override
        protected Map<String, String> getParams() 
        {  
                Map<String, String>  params = new HashMap<String, String>();  
                params.put("name", "Alif");  
                params.put("domain", "http://itsalif.info");

                return params;  
        }
    };
    queue.add(postRequest);