如何使用HttpURLConnection的，而不是凌空获得JSON对象？

本文介绍了如何使用HttpURLConnection的，而不是凌空获得JSON对象？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想要做的就是一些数据从一个的的HttpURLConnection 而不是使用 JsonObjectRequest（）从凌空库。

What I'm trying to do is get some data from a HttpURLConnection instead of using JsonObjectRequest() from the Volley library.

下面是我用它来从我的服务器抓取一个JSON对象的code。

Below is the code that I use to grab a JSON object from my server.

JsonObjectRequest jsonReq = new JsonObjectRequest(Method.GET,"myURL", null, new Response.Listener<JSONObject>();

我试图改变空到的JSONObject 在 myURL 改为空。但是，这并没有工作了。

I tried changing the null to a JSONObject after myURL was changed to null. But that did not work out.

推荐答案

在 JsonObjectRequest网址（）不可选的，JSONObject的参数是用来发布的参数与请求的URL。

The url in JsonObjectRequest() is not optional, and the JSONObject parameter is used to post parameters with the request to the url.

从文档： afzaln/volley/com/android/volley/toolbox/JsonObjectRequest.html

developer.android/training/volley/index.html

JsonObjectRequest

JsonObjectRequest

公共JsonObjectRequest（INT方法，                            字符串URL，                            的JSONObject jsonRequest，                            Response.Listener监听器，                            Response.ErrorListener errorListener）创建一个新的请求。

public JsonObjectRequest(int method, String url, JSONObject jsonRequest, Response.Listener listener, Response.ErrorListener errorListener) Creates a new request.

参数：

方法 - HTTP方法使用

method - the HTTP method to use

URL - URL从

url - URL to fetch the JSON from

jsonRequest - 一个JSONObject的发布与请求。空是允许的   并表示没有参数，将张贴与要求。

jsonRequest - A JSONObject to post with the request. Null is allowed and indicates no parameters will be posted along with request.

监听器 - 监听器接收JSON响应

listener - Listener to receive the JSON response

errorListener - 错误监听，或者为null，忽略错误

errorListener - Error listener, or null to ignore errors.

使用的HttpURLConnection ：

developer.android/reference/java/net/HttpURLConnection.html

在code将是这样的：

The code would be something like this:

public class getData extends AsyncTask<String, String, String> { HttpURLConnection urlConnection; @Override protected String doInBackground(String... args) { StringBuilder result = new StringBuilder(); try { URL url = new URL("api.github/users/dmnugent80/repos"); urlConnection = (HttpURLConnection) url.openConnection(); InputStream in = new BufferedInputStream(urlConnection.getInputStream()); BufferedReader reader = new BufferedReader(new InputStreamReader(in)); String line; while ((line = reader.readLine()) != null) { result.append(line); } }catch( Exception e) { e.printStackTrace(); } finally { urlConnection.disconnect(); } return result.toString(); } @Override protected void onPostExecute(String result) { //Do something with the JSON string } }