java - 安卓截击。无法从有效的 Rest API 获取 JSON 响应

Question

我在 POSTMAN 中测试了我的 REST 服务，它工作正常。我应该得到这样的东西:

{
    "msg": "the user was successfully created"
    ...
}

但是在我调试的 android 应用程序中找不到响应。我错过了什么或者我做错了什么吗？谢谢!

private void registerUser(final String firstName, final String lastName,
                          final String email, final String password) {

    pDialog.setMessage("Registering ...");
    showDialog();

    try {
        RequestQueue requestQueue = Volley.newRequestQueue(this);
        JSONObject jsonBody = new JSONObject();
        jsonBody.put("first_name", firstName);
        jsonBody.put("last_name", lastName);
        jsonBody.put("email", email);
        jsonBody.put("password", password);

        final String requestBody = jsonBody.toString();

        StringRequest stringRequest = new StringRequest(Request.Method.POST, AppConfig.URL_REGISTER, new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                Log.d(TAG, "Register Response: " + response);
                hideDialog();
                ...
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Log.e("VOLLEY", error.toString());
            }
        }) {
            @Override
            public String getBodyContentType() {
                return "application/json";
            }

            @Override
            public byte[] getBody() throws AuthFailureError {
                try {
                    return requestBody == null ? null : requestBody.getBytes("utf-8");
                } catch (UnsupportedEncodingException uee) {
                    VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s", requestBody, "utf-8");
                    return null;
                }
            }

            @Override
            protected Response<String> parseNetworkResponse(NetworkResponse response) {
                String responseString = "";
                if (response != null) {
                    responseString = String.valueOf(response.statusCode);

                }
                return Response.success(responseString, HttpHeaderParser.parseCacheHeaders(response));
            }
        };

        requestQueue.add(stringRequest);
    } catch (JSONException e) {
        e.printStackTrace();
    }

在调试中， block

@Override
            protected Response<String> parseNetworkResponse(NetworkResponse response) {
                String responseString = "";
                if (response != null) {
                    responseString = String.valueOf(response.statusCode);

                }
                return Response.success(responseString, HttpHeaderParser.parseCacheHeaders(response));
            }

显示:

我没有 JSON 响应。

Answer 1

您没有看到任何 json 数据，因为您没有从您这边生成任何 json 响应。您在 Postman 上看到的响应来自 api 服务。您的程序已成功响应(即状态代码 201)，这是您发送回客户端的唯一内容。

 if (response != null) {
                responseString = String.valueOf(response.statusCode);

            }

您必须操纵响应(在 parseNetworkResponse 模块中)并将您想要的相关信息转发给您的客户。