如何将json映射到实体

import com.google.gson.Gson;

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

        // 创建Gson对象
        Gson gson = new Gson();

        // 将JSON解析为实体类对象
        Person person = gson.fromJson(json, Person.class);

        // 输出实体类属性值
        System.out.println(person.getName());
        System.out.println(person.getAge());
    }
}

class Person {
    private String name;
    private int age;

    // 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;
    }
}