Json数据解析（二）

这个格式使用如下代码解析

 

try {

    JSONObject jsonObject = new JSONObject(json);

    JSONObject weatherinfo = jsonObject.getJSONObject("weatherinfo");

 

    System.out.println(weatherinfo.getString("city"));

    System.out.println(weatherinfo.getString("cityid"));

    System.out.println(weatherinfo.getString("temp"));

    System.out.println(weatherinfo.getString("WD"));

 

} catch (JSONException e) {

    e.printStackTrace();

}

  其中第一行代码 JSONObject jsonObject = new JSONObject(json);//json 即为你的字符串

     

 比如现在天气信息是多个城市的，并非只有北京市。

{"weatherinfo":[{"city":"北京","cityid":"101010100","temp":"4","WD":"东风","WS":"2级","SD":"75%","WSE":"2","time":"10:45","isRadar":"1","Radar":"JC_RADAR_AZ9010_JB","njd":"暂无实况","qy":"1011"},{"city":"天津","cityid":"101010100","temp":"4","WD":"东风","WS":"2级","SD":"75%","WSE":"2","time":"10:45","isRadar":"1","Radar":"JC_RADAR_AZ9010_JB","njd":"暂无实况","qy":"1011"}]}

以下代码适用。   

 

try {

    JSONObject jsonObject=new JSONObject(json);

    JSONArray jsonArray=jsonObject.getJSONArray("weatherinfo");

  for (int i=0;i<jsonArray.length();i++){

      JSONObject object = jsonArray.getJSONObject(i);

      System.out.println(object.getString("city"));

      System.out.println(object.getString("cityid"));

      System.out.println(object.getString("temp"));

      System.out.println(object.getString("WD"));

  }

} catch (JSONException e) {

    e.printStackTrace();

}