在不知道JSON结构的情况下解析java中的嵌套JSON

import com.google.gson.Gson;

public class JsonParser {
    public static void main(String[] args) {
        String jsonString = "{\"name\":\"John\",\"age\":30,\"address\":{\"city\":\"New York\",\"state\":\"NY\"}}";

        // 使用Gson库解析JSON
        Gson gson = new Gson();
        Person person = gson.fromJson(jsonString, Person.class);

        // 访问嵌套JSON的值
        System.out.println("Name: " + person.getName());
        System.out.println("Age: " + person.getAge());
        System.out.println("City: " + person.getAddress().getCity());
        System.out.println("State: " + person.getAddress().getState());
    }

    // 定义Person类和Address类来表示JSON结构
    static class Person {
        private String name;
        private int age;
        private Address address;

        // getter和setter方法

        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;
        }

        public Address getAddress() {
            return address;
        }

        public void setAddress(Address address) {
            this.address = address;
        }
    }

    static class Address {
        private String city;
        private String state;

        // getter和setter方法

        public String getCity() {
            return city;
        }

        public void setCity(String city) {
            this.city = city;
        }

        public String getState() {
            return state;
        }

        public void setState(String state) {
            this.state = state;
        }
    }
}