Json解析

最新推荐文章于 2025-04-24 17:05:49 发布

Lzreal

最新推荐文章于 2025-04-24 17:05:49 发布

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本文详细介绍了如何使用HTTP URL连接和 HttpURLConnection 实现网络请求，接收天气API返回的JSON数据，并进行解析，最终将天气信息封装到 Weather 类中。

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</pre><pre name="code" class="java">public void run() {
		// TODO Auto-generated method stub
		try {
			URL u = new URL(url);
			HttpURLConnection conn = (HttpURLConnection) u.openConnection();
			conn.setConnectTimeout(3000);
			conn.setReadTimeout(3000);
			conn.connect();
			if (conn.getResponseCode() == 200) {
				InputStream in = conn.getInputStream();

				BufferedReader reader = new BufferedReader(
						new InputStreamReader(in));
				String s;
				StringBuffer sb = new StringBuffer();
				while ((s = reader.readLine()) != null) {
					sb.append(s);
				}
				reader.close();
				in.close();
				conn.disconnect();
				Weather w = new Weather();
				JSONObject jsonObject = new JSONObject(sb.toString());
				JSONObject weatherinfo = jsonObject
						.getJSONObject("weatherinfo");
				w.setCity(weatherinfo.getString("city"));
				String date = weatherinfo.getString("date_y");
				w.setDate_y(date);
				w.setIndex(weatherinfo.getString("index"));
				w.setWind1(weatherinfo.getString("wind1"));
				String week = weatherinfo.getString("week");
				w.setWeek(week);
				w.setTemp(weatherinfo.getString("temp1"));
				w.setWeather(weatherinfo.getString("weather1"));
				List<DayWeather> evday = new ArrayList<DayWeather>();
				for (int i = 2; i < 7; i++) {
					DayWeather d = new DayWeather();
					String temp = weatherinfo.getString("temp" + i);
					String weather = weatherinfo.getString("weather" + i);
					String weekn = getNextWeek(week);
					week = weekn;
					String daten = getNextDate(date);
					date=daten;
					d.setDate_y(daten);
					d.setWeek(weekn);
					d.setTemp(temp);
					d.setWeather(weather);
					evday.add(d);
				}
				w.setEvday(evday);

				Message msg = Message.obtain();
				msg.obj = w;
				msg.what = 1;
				handler.sendMessage(msg);
			} else {
				Log.i("msg", "无法连接");
			}

		} catch (Exception e) {
			// TODO: handle exception
		}

		super.run();
	}