Question

这是android app中的截击请求代码

String url = "http://xx.xx.xx.xx:80/api/attendances";  //this is address. replaced with xx here
JSONArray jsonArray = new JSONArray();
            for(int i=0; i < studentList.size(); i++)
            {
                jsonArray.put(studentList.get(i).toJson());
            }

            JSONObject parameters = new JSONObject();

            try {
                parameters.put("class_id", class_id);
                parameters.put("students", jsonArray);
            } catch (JSONException e) {
                e.printStackTrace();
            }

            JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST,
                    url, parameters,
                    new Response.Listener<JSONObject>() {

                        @Override
                        public void onResponse(JSONObject response) {
                            Log.d("API", response.toString());

                            try {
                                if(response.getString("status").equalsIgnoreCase("Success")){

                                }
                                else {
                                    Toast.makeText(getBaseContext(), response.getString("msg"), Toast.LENGTH_SHORT).show();
                                }
                            } catch (JSONException e) {
                                e.printStackTrace();
                            }

                            pDialog.dismiss();
                        }
                    },
                    new Response.ErrorListener() {
                        @Override
                        public void onErrorResponse(VolleyError error) {
                            // hide the progress dialog
                            VolleyLog.d("API", "Error: " + error.toString());
                            Toast.makeText(getBaseContext(), "Unable to contact server.", Toast.LENGTH_LONG).show();
                            if(error.networkResponse.data!=null) {

                                VolleyLog.d("API", "Error: " + body);
                            }
                            pDialog.dismiss();
                        }

                    }){
                @Override
                public Map<String, String> getHeaders() throws AuthFailureError {
                    Map<String, String> headers = new HashMap<>();
                    headers.put("Content-Type", "application/json");
                    headers.put("Authorization","Bearer "+ token);
                    return headers;
                }
            };

            AppController.getInstance().addToRequestQueue(jsonObjectRequest, tag_json_obj);

这会产生jsonObjectRequest

{"class_id":"11","students":[{"id":"222","present":true},{"id":"223","present":true},{"id":"224","present":false}]}

此请求的Laravel代码是 -

public function store(Request $request)
{
    $validator = Validator::make($request->all(), [
        'students' => 'required',
        'class_id' => 'required',
    ]);

    if ($validator->fails()) {
        return response()->json($validator->errors());
    }
    $user = auth()->user();

    if (Gate::allows('post_attendance')) {
        $attendance = Attendance::create([
            'cl_id' => $request->class_id,
            'user_id' => $user->id,
        ]);

        try {
            $students = json_decode($request->students);
            foreach ($students as $student) {
                Present::create([
                    'attendance_id' => $attendance->id,
                    'student_id' => $student->id,
                    'present' => $student->present
                ]);
            }
        } catch (\Exception $exception) {
            return response()->json(['error', $exception->getMessage()], 300);
        }

        return response()->json([
            'status' => 'Success',
            'msg' => 'Added'
        ]);
    }


    return response()->json([
        'status' => 'Error',
        'msg' => 'Access Denied!'
    ]);
}

如果我使用Android应用程序，此代码会在Attendance表中创建一个条目但仍会出现错误“BasicNetwork.performRequest：http://XX.XX.XX.XX:80/api/attendances的意外响应代码300”。所以解析JSONArray时遇到了问题。如果我注释掉try catch part它会成功运行状态为'Success'。

此外，如果使用API客户端相同的Laravel代码可以正常工作，并在考勤表和演示表中创建条目。

在屏幕截图中，学生字段包含以下给出的学生jsonarray -

[{"id":"222","present":true},{"id":"223","present":true},{"id":"224","present":false}]

问题是我不知道为什么从API客户端发送的请求正在工作，但是同样的请求不能在Android客户端上运行，Laravel代码与API客户端完美配合。但它确实适用于从android发送的请求。

我搜索了很多未发现任何类似问题或调试android客户端的方法。 Volley仅提供错误响应代码。有没有办法访问Laravel给出的整个错误响应？任何帮助表示赞赏

Answer 1

您正在发送json，您可以像json那样获得

try {
        $students = json_decode($request->getContent());
        foreach ($students['students'] as $student) {
            Present::create([
                'attendance_id' => $attendance->id,
                'student_id' => $student->id,
                'present' => $student->present
            ]);
        }
    } catch (\Exception $exception) {
        return response()->json(['error', $exception->getMessage()], 300);
    }

使用$request->getContents()获取json

希望这有帮助

这有助于进行这些调整

try {
        $data = json_decode($request->getContent(),true);
        $attendance = Attendance::create([
            'cl_id' => $data['class_id'],
            'user_id' => $user->id,
        ]);
            foreach ($data['students'] as $student) {
                Present::create([
                    'attendance_id' => $attendance->id,
                    'student_id' => $student['id'],
                    'present' => $student['present']
                ]);
            }
        } catch (\Exception $exception) {
            return response()->json(['error', $exception->getMessage()], 300);
        }

无法解析laravel中的jsonarray，使用volley库

1 个答案: