java-序列化和反序列化

import java.io.Serializable;

public class Person implements Serializable {
    private String name;
    private int age;

    public Person(){

    }

    @Override
    public String toString() {
        return "Person{" +
                "name=‘" + name + ‘\‘‘ +
                ", age=" + age +
                ‘}‘;
    }

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    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 class Demo66 {
    public static void main(String[] args) throws IOException {
        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("C:\\Users\\quan\\Desktop\\练习\\src\\code\\haotusay.txt"));
        oos.writeObject(new Person("aa",22));
        oos.close();
    }
}

public class Demo66 {
    public static void main(String[] args) throws IOException, ClassNotFoundException {
        ObjectInputStream ois = new ObjectInputStream(new FileInputStream("C:\\Users\\quan\\Desktop\\练习\\src\\code\\haotusay.txt"));
        Object o = ois.readObject();
        ois.close();
        System.out.println(o);
        Person person = (Person)o;
        System.out.println(person.getAge()+person.getName());
    }
    //结果Person{name=‘aa‘, age=22}
    //22aa
}

/*
当我们新爱国再文件中保存多个对象的时候，可以把多个对象存储到一个集合中
    对象集合进行序列化和反序列化
    因为我们不能向一个文件当中写入多个对象

11定义一个存储person对象的集合arraylist集合
22集合加入对象
33创建序列化流ObjectOutputStream对象
44使用ObjectOutputStream对象的方法writeObject对象，对集合进行序列号
55创建一个反序列化objectinputStream对象
66使用方法readObject 读取保存的集合
77把Object 类型的集合转换为Arraylist 类型
88遍历集合输出
99释放资源
 */

public class Demo66 {
    public static void main(String[] args) throws IOException, ClassNotFoundException {
        ArrayList<Person> list = new ArrayList<>();
        list.add(new Person("AA",11));
        list.add(new Person("BB",22));
        list.add(new Person("CC",33));

        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("C:\\Users\\quan\\Desktop\\练习\\src\\code\\haotusay.txt"));
        oos.writeObject(list);

        ObjectInputStream ois = new ObjectInputStream(new FileInputStream("C:\\Users\\quan\\Desktop\\练习\\src\\code\\haotusay.txt"));
        Object o = ois.readObject();
        ArrayList<Person> arrayList = (ArrayList<Person>)o;
        for (Person person:arrayList) {
            System.out.println(person);
        }

    }
}
/*结果
Person{name=‘AA‘, age=11}
Person{name=‘BB‘, age=22}
Person{name=‘CC‘, age=33}
 */