从JSON字符串创建动态/运行时(和简单) bean

import com.fasterxml.jackson.databind.ObjectMapper;

public class JsonToBeanExample {
    public static void main(String[] args) {
        String json = "{\"name\":\"John\", \"age\":30}";

        try {
            ObjectMapper objectMapper = new ObjectMapper();
            MyBean myBean = objectMapper.readValue(json, MyBean.class);

            System.out.println(myBean.getName());
            System.out.println(myBean.getAge());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static class MyBean {
        private String name;
        private int age;

        // getters and setters

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public int getAge() {
            return age;
        }

        public void setAge(int age) {
            this.age = age;
        }
    }
}