Question

代码如下：

public void loginPost(String url, String emailAddress, String password){
        Map<String, String> params = new HashMap();
        params.put("email", emailAddress);
        params.put("password", password);
        JSONObject parameters = new JSONObject(params);
        String LOGIN_REQUEST_TAG = "LOGIN_REQUEST_TAG";

        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, url, parameters, new Response.Listener<JSONObject>() {
            @Override
            public void onResponse(JSONObject response) {
                Log.d("Login Response:", response.toString());
                JSONObject responseOject = response;
                if(responseOject.has("data")){
                    try {
                        Log.d("Data Response", responseOject.getString("data"));
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }else if(responseOject.has("error")){
                    try {
                        errorMessage = responseOject.getString("error");
                        new AlertDialog.Builder(MainActivity.this)
                                .setTitle("Error")
                                .setMessage(errorMessage)
                                .setNegativeButton("OK", null)
                                .show();
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }else{
                    //Server error. Come back again later
                    Log.d("Server error", "Server Error");

                }
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                VolleyLog.e("Error at login: ", error.getMessage());
            }

        });
        AppSingleton.getInstance(getApplicationContext()).addToRequestQueue(jsonObjectRequest,LOGIN_REQUEST_TAG);

    }

所有参数和URL都是正确的，因为我在调试期间已对其进行了检查。而且在Postman中一切正常。但是，上面的代码不会进入onResponse方法，并且我没有收到任何错误。但是它警告"responseOject"是多余的。我做错了吗？ Android开发的新手。

错误：

BasicNetwork.performRequest: Unexpected response code 401

这是一个POST API，我正在使用Request.Method.Post，为什么会收到该错误？

Answer 1

在使用API之前，请先在Postman中对其进行测试。您将清楚了解正在发生的事情。错误代码401表示您的参数错误。否则，您无权访问该API。

尝试使用此代码进行此类呼叫。

  private void callNetwork(final String email, final String password) {
        String json_object_request = "jsonObjectRequest";
        //Creating a string request
        StringRequest stringRequest = new StringRequest(Request.Method.POST, Config.URL_LOGIN,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        if (response != null) {
                            parseData(response);
                        }
                    }
                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        progressBar.setVisibility(View.GONE);
                    }
                }) {
            @Override
            protected Map<String, String> getParams() {
                Map<String, String> params = new HashMap<>();
                //Adding parameters to request
                params.put("email", email);
                params.put("password", password);
                //returning parameter
                return params;
            }
        };

        //Adding the string request to the queue

        AppController.getInstance().addToRequestQueue(stringRequest, json_object_request);
    }

无法使用Volley调用POST方法

1 个答案: