1  首先根据json串 ,构建javabean

public class NewsCenter {    public List
    
      data;    public List
     
       extend;    public String retcode;    public class NewsCenterItem {        public List
      
        children;        public String id;        public String type;        public String title;        public String url;        public String url1;        public String dayurl;        public String excurl;        public String weekurl;    }    public class Children {        public String id;        public String type;        public String title;        public String url;    }}
      
     
    

  2  编写一个json工具类

public class GsonUtil {public static 
    
      T json2bean(String json,Class
     
       clazz){    Gson gson=new Gson();        return gson.fromJson(json, clazz);    }}
     
    

3  解析json

 NewsCenterPager centerPager=GsonUtil.json2bean(result, NewsCenterPager.class);