自定义对象的GSON反序列化映射

import com.google.gson.Gson;

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

        Gson gson = new Gson();
        Person person = gson.fromJson(json, Person.class);

        System.out.println(person.getName());
        System.out.println(person.getAge());
        System.out.println(person.getEmail());
    }
}

class Person {
    private String name;
    private int age;
    private String email;

    // 必须具有无参构造函数
    public Person() {
    }

    // 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 String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }
}