验证Jackson中的嵌套对象

public class Person {
    private String name;
    private int age;
    private Address address;

    // 省略构造函数、getter和setter方法
}

public class Address {
    private String street;
    private String city;
    private String country;

    // 省略构造函数、getter和setter方法
}

import com.fasterxml.jackson.databind.ObjectMapper;

public class Main {
    public static void main(String[] args) {
        try {
            // 创建一个ObjectMapper对象
            ObjectMapper objectMapper = new ObjectMapper();

            // 创建一个Person对象
            Person person = new Person("John Doe", 30, new Address("123 Main St", "City", "Country"));

            // 将Person对象转换为JSON字符串
            String json = objectMapper.writeValueAsString(person);
            System.out.println(json);

            // 将JSON字符串转换为Person对象
            Person deserializedPerson = objectMapper.readValue(json, Person.class);
            System.out.println(deserializedPerson.getName());
            System.out.println(deserializedPerson.getAge());
            System.out.println(deserializedPerson.getAddress().getStreet());
            System.out.println(deserializedPerson.getAddress().getCity());
            System.out.println(deserializedPerson.getAddress().getCountry());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}