fastjson解析map的循环嵌套json串

梦里梦外; 2024-02-18 16:40 16阅读 0赞

实体类:

package com.site.utils;
    
    import java.util.List;
    
    /**
     * Create by szw on 2017/11/24 10:17
     */
    public class Life {
        private String name;//姓名
        private int age;//年龄
        private String country;//国家
        private List<String> friend;
    
        public String getName() {
            return name;
        }
    
        @Override
        public String toString() {
            return "Life{" +
                    "name='" + name + '\'' +
                    ", age=" + age +
                    ", country='" + country + '\'' +
                    ", friend=" + friend +
                    '}';
        }
    
        public Life(String name, int age, String country, List<String> friend) {
            this.name = name;
            this.age = age;
            this.country = country;
            this.friend = friend;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public int getAge() {
            return age;
        }
    
        public void setAge(int age) {
            this.age = age;
        }
    
        public String getCountry() {
            return country;
        }
    
        public void setCountry(String country) {
            this.country = country;
        }
    
        public List<String> getFriend() {
            return friend;
        }
    
        public void setFriend(List<String> friend) {
            this.friend = friend;
        }
    }

package com.site.utils;
    
    import com.alibaba.fastjson.JSON;
    import redis.clients.jedis.Jedis;
    
    import java.util.ArrayList;
    import java.util.HashMap;
    /**
     * Create by szw on 2017/11/24 9:42
     */
    public class Mydemo {
        public static void main(String[] args) {
            HashMap<String, Object> map = new HashMap<>();
            /**
             * 家用电器
             */
            ArrayList<String> list = new ArrayList<>();
            list.add("海尔冰箱");
            list.add("美的空调");
            list.add("科迈罗跑车");
            map.put("家用电器", list);
            /**
             * 生活
             */
            HashMap<String, Life> life = new HashMap<>();
            life.put("关羽",new Life("关云长",43,"蜀",new ArrayList<>()));
            life.put("张飞",new Life("张翼德",42,"蜀",new ArrayList<>()));
            map.put("生活", life);
            /**
             * 序列化
             */
            String jsonString = JSON.toJSONString(map);
            System.out.println(jsonString);
            /**
             * 存入Redis中
             */
            Jedis jedis = RedisUtil.getJedis();
            jedis.set("world", jsonString);
        }
    }
     package com.site.utils;
    
    import com.alibaba.fastjson.JSON;
    import com.alibaba.fastjson.JSONObject;
    import redis.clients.jedis.Jedis;
    import java.util.Map;
    
    /**
     * Create by szw on 2017/11/24 10:38
     */
    public class MydemoTest {
        public static void main(String[] args) {
            Jedis jedis = RedisUtil.getJedis();
            String world = jedis.get("world");
            System.out.println(world);
            Map map = JSON.parseObject(world, Map.class);
            Map<String, Object> life = (Map<String,Object>) map.get("生活");
            for (String key : life.keySet()) {
                JSONObject jsonObject = (JSONObject) life.get(key);
                Life l = JSON.parseObject(jsonObject.toJSONString(), Life.class);
                System.out.print("对象打印:");
                System.out.println();
                System.out.println(l.toString());
            }
        }
    
        /**
         * 遍历Map
         * @param map
         */
        public static void showMap(Map<String,Object> map){
            for(Map.Entry<String,Object> kv:map.entrySet()){
                System.out.println(kv.getKey()+"  "+kv.getValue());
            }
        }
    }