安卓学习笔记 Json数据获取->解析

点击查看完整版参考代码

点击查看完整版参考代码

public class MainActivity extends Activity {

    public static final String TAG = "HttpURLConnection";
    public static final String TAG2 = "News";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        httpUrlConnectionGet();
    }

    private void httpUrlConnectionGet() {
        new Thread(new Runnable() {

            @Override
            public void run() {

                try {
                    // 获得URL对象
                    URL url = new URL("http://v.juhe.cn/toutiao/index?type=tiyu&key=5465c4c5d60f72c3d756a9f1a9b8437d");

                    // 网络Get请求的主类对象
                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();

                    // 设置为GET请求
                    connection.setRequestMethod("GET");
                    // 设置连接时长和读取时长
                    connection.setConnectTimeout(10000);
                    connection.setReadTimeout(10000);

                    // 判断状态码
                    if (connection.getResponseCode() == 200) {
                        // 获取字节输入流
                        InputStream is = connection.getInputStream();
                        // 转换为字符流输入流
                        InputStreamReader isr = new InputStreamReader(is);
                        // 缓冲字符输入流
                        BufferedReader br = new BufferedReader(isr);

                        // JSON数据拼接用的字符串类
                        StringBuffer sb = new StringBuffer();
                        // “水瓢”
                        String buffer = new String();

                        // 循环读取数据
                        while ((buffer = br.readLine()) != null) {
                            // 追加拼接的字符串
                            sb.append(buffer);
                        }
                        // 转换成字符串，打印检测结果是否正常
                        Log.d(TAG, sb.toString());

                        // 关闭输入流
                        br.close();

                        // 解析JSON数据
                        parseJSON(sb.toString());

                    } else {
                        Log.d(TAG, "Error code:" + connection.getResponseCode());
                    }

                } catch (MalformedURLException e) {
                    e.printStackTrace();
                    Log.d(TAG, "" + e);
                } catch (IOException e) {
                    e.printStackTrace();
                    Log.d(TAG, "" + e);
                } catch (JSONException e) {
                    e.printStackTrace();
                    Log.d(TAG, "" + e);
                }

            }
        }).start();
    }

    /**
     * 解析JSON数据
     * 
     * @throws JSONException
     */
    private void parseJSON(String data) throws JSONException {
        // 最外层的JSONObject类型
        JSONObject object = new JSONObject(data);
        JSONObject result = object.getJSONObject("result");
        // JSONArray数组
        JSONArray array = result.getJSONArray("data");
        // 遍历数组
        for (int i = 0; i < array.length(); i++) {
            // 单条新闻对应的JSONObject
            JSONObject item = array.getJSONObject(i);
            // 拿出新闻中的每一条数据
            String uniquekey = item.getString("uniquekey");
            String title = item.getString("title");
            String date = item.getString("date");
            String category = item.getString("category");
            String author_name = item.getString("author_name");
            String url = item.getString("url");
            String thumbnail_pic_s = item.getString("thumbnail_pic_s");

            Log.d(TAG2, uniquekey);
            Log.d(TAG2, title);
            Log.d(TAG2, date);
            Log.d(TAG2, category);
            Log.d(TAG2, author_name);
            Log.d(TAG2, url);
            Log.d(TAG2, thumbnail_pic_s);
            Log.d(TAG2, "**************************************");
            // 使用数据，自行处理
            // 持久化：存储到数据库中

        }

    }

}