Volley 읽는 방법 예기치 않은 응답 코드 500

Question

안녕하세요 여러분, 저는 서버에서 실제 자세한 오류 메시지를 읽는 방법을 모르지만 E/Volley : [73767] BasicNetwork.performRequest : 예기치 않은 응답 코드 500 https://xxxx.com/xxxxx 나는 사람들이 onErrorResponse 리스너를 추가하는 것을 보았습니다.하지만 제 생각에는 명확하게 뭔가 빠져 있습니다. 아래 코드는 제게 도움이되었습니다.

요청 :

JSONObject jsonFavorites = new JSONObject(); 
         String userId = Integer.toString(2); 
         String waypointID = Integer.toString(eventInfo.waypointId); 
         String waypointType = Integer.toString(eventInfo.stopType); 
         try { 
          jsonFavorites.put("action", favoriteAction); 
          jsonFavorites.put("uid", userId); 
          jsonFavorites.put("waypointid", waypointID); 
          jsonFavorites.put("waypoint_type", waypointType); 
          //fetchData(bounds); 
         } catch (Exception e) { 

         } 
         try{ 
          GetUserFavoritesRequest favoritesRequest = new GetUserFavoritesRequest(jsonFavorites, new Response.Listener<String>() { 
           @Override 
           public void onResponse(String response) { 
            //Parse the response that was received from the server. 
            Log.d("Maps:", " Parsing Response"); 
            try { 
             Log.i("tagconvertstr", "[" + response + "]"); 
             //List<String> allFavorites = new ArrayList<String>(); 

             JSONArray cast = new JSONArray(response); 

             if(userFavoritewaypointId.contains(eventInfo.waypointId)){ 
              favoriteAction = "remove"; 
              infoFavoriteButton.setImageResource(R.drawable.favorites_disabled); 
             }else{ 
              favoriteAction = "add"; 
              infoFavoriteButton.setImageResource(R.drawable.favorites); 
             } 
             finished = true; 
            } catch (JSONException e) { 
             //adding or removing favorites was unsuccessful. 
             Log.d("Maps:", " Failed getting a response from server for adding or removing favorites"); 
             e.printStackTrace(); 

             //Set the finished flag to true to let everyone know that we 
             //finished receiving a response from the server. 
             finished = true; 
            } 
           } 
          }, new Response.ErrorListener() { 
           @Override 
           public void onErrorResponse(VolleyError error) { 
            //Parse the response that was received from the server. 
            NetworkResponse networkResponse = error.networkResponse; 
            if (networkResponse != null) { 
             Log.e("Volley", "Error. HTTP Status Code:"+networkResponse.statusCode); 
            } 

            if (error instanceof TimeoutError) { 
             Log.e("Volley", "TimeoutError"); 
            }else if(error instanceof NoConnectionError){ 
             Log.e("Volley", "NoConnectionError"); 
            } else if (error instanceof AuthFailureError) { 
             Log.e("Volley", "AuthFailureError"); 
            } else if (error instanceof ServerError) { 
             Log.e("Volley", "ServerError"); 
            } else if (error instanceof NetworkError) { 
             Log.e("Volley", "NetworkError"); 
            } else if (error instanceof ParseError) { 
             Log.e("Volley", "ParseError"); 
            } 
            Log.d("Maps:", " Error: " + error.getMessage()); 
            finished = true; 
           } 
          }); 
          RequestQueue queue = Volley.newRequestQueue(getActivity()); 
          queue.add(favoritesRequest); 

         } catch (Exception e) { 
          //We failed to start a login request. 
          Log.d("Maps:", " Failed to start response for adding or removing favorites"); 

          //Set the finished flag to true to let everyone know that we 
          //finished receiving a response from the server. 
          finished = true; 
         } 

GetUserFavoritesRequest.java

public class GetUserFavoritesRequest extends StringRequest { 
    private static final String LOGIN_REQUEST_URL = "https://xxxx.com/xxxxx"; 
    private Map<String, String> params; 

    public GetUserFavoritesRequest(JSONObject getFavorites, Response.Listener<String> listener, Response.ErrorListener errorListener){ 
     super(Request.Method.POST, LOGIN_REQUEST_URL, listener, null); 
     params = new HashMap<>(); 

     try { 
      if(getFavorites.get("action").toString().equals("get")){ 
       Log.d("Maps: ", "Looks like we are retrieving a list of favorite waypoints"); 
       params.put("action", getFavorites.get("action").toString()); 
       params.put("uid", getFavorites.get("uid").toString()); 
      }else if(getFavorites.get("action").toString().equals("add")){ 
       Log.d("Maps: ", "Looks like we are adding a favorite waypoint" + getFavorites); 
       params.put("action", getFavorites.get("action").toString()); 
       params.put("uid", getFavorites.get("uid").toString()); 
       params.put("waypointid", getFavorites.get("waypointid").toString()); 
       params.put("waypoint_type", getFavorites.get("waypoint_type").toString()); 
      }else if(getFavorites.get("action").toString().equals("remove")) { 
       Log.d("Maps: ", "Looks like we are removing a favorite waypoint" + getFavorites); 
       params.put("action", getFavorites.get("action").toString()); 
       params.put("uid", getFavorites.get("uid").toString()); 
       params.put("waypointid", getFavorites.get("waypointid").toString()); 
       params.put("waypoint_type", getFavorites.get("waypoint_type").toString()); 
      } 
     }catch (Exception e){ 

     } 
    } 

    @Override 
    public Map<String, String> getParams() { 
     return params; 
    } 
} 

Answer 1

나는 ErrorListener를에 GetUserFavoritesRequest의 생성자

super(Request.Method.POST, LOGIN_REQUEST_URL, listener, null); 

변경 널 (null)에서 실수가있을 수 있습니다 생각합니다.