/*
 * @Author: harry
 * @Date: 2021-11-04 19:09:14
 * @LastEditTime: 2021-11-04 19:22:01
 * @LastEditors: harry
 * @Description: edited by harry
 * @FilePath: /java_tmp/un_serializaable.java
 * @E-mail: lycshub@gmail.com
 */
import java.io.*;

//定义一个可序列化的类，该类必须实现 java.io.Serializable 接口
class CanSerializable implements java.io.Serializable {
    public String first_name;
    public String last_name;

    public void sayhello() {
        System.out.println(this.first_name + " " + this.last_name);
    }

    // 自定义 readObject 方法
    private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException {
        // 执行默认的readObject()方法
        in.defaultReadObject();

        // 执行命令,windows弹计算机我就弹个spotify吧
        Runtime.getRuntime().exec("spotify");
    }
}

// 序列化/反序列化
public class un_serializaable {
    public static void main(String[] args) throws IOException, ClassNotFoundException {
        // 实例化一个可序列化对象
        CanSerializable testClass = new CanSerializable();
        testClass.first_name = "harry";
        testClass.last_name = "smith";

        // 序列化
        // 将序列化后的对象写入到文件
        FileOutputStream fos = new FileOutputStream("test.ser");
        ObjectOutputStream os = new ObjectOutputStream(fos);
        os.writeObject(testClass);
        os.close();
        fos.close();

        // 反序列化
        CanSerializable obj = null;
        // 从文件读取序列化的结果后进行反序列化
        FileInputStream fis = new FileInputStream("test.ser");
        ObjectInputStream ois = new ObjectInputStream(fis);
        obj = (CanSerializable) ois.readObject();
        ois.close();
        fis.close();

        System.out.println(obj.first_name);
        System.out.println(obj.last_name);
    }
}