json兩層解析

public class Demo {

    public static void main(String[] args) {
        try {
            // 創建連接                              服務器的連接地址
            URL url = new URL(
                    "http://apicloud.mob.com/v1/mobile/address/query?phone=13026610069&key=1b2e046d45634");
            try {
                // 創建輸入流
                BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream()));
                // 創建一個StringBuffer對象
                StringBuffer sb = new StringBuffer();
                // 定義一個字符串變量
                String st ;
                // 不等於null的時候一直讀
                while ((st = br.readLine()) != null) {
                    // 讀取的所有字符串添加到sb
                    sb.append(st);
                }
                // 創建第一個解析                                  需要解析的字符串
                JSONObject first = JSONObject.fromObject(sb.toString());
                // 打印需要解析的字符串
                System.out.println(sb.toString());
                System.out.println("===============json第一層解析============");
                System.out.println("msg:"+first.get("msg"));
                System.out.println("retCode:"+first.get("retCode"));
                System.out.println("result:"+first.get("result"));
                
                // 創建第二個解析                                需要解析的字符串
                JSONObject second = JSONObject.fromObject(first.get("result"));
                System.out.println("==============json第二層解析==============");
                System.out.println("city:"+second.get("city"));
                System.out.println("cityCode:"+second.get("cityCode"));
                System.out.println("mobileNumber:"+second.get("mobileNumber"));
                System.out.println("operator:"+second.get("operator"));
                System.out.println("province:"+second.get("province"));
                System.out.println("zipCode:"+second.get("zipCode"));
            } catch (IOException e) {
                e.printStackTrace();
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
    }

}