package io;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.util.ArrayList;

/**

* @author ： CodeWater

* @create ：2022-02-28-12:38

* @Function Description ：序列化集合练习

* 1. 将存有多个自定义对象的集合序列化操作，保存到`list.txt`文件中。

* 2. 反序列化`list.txt` ，并遍历集合，打印对象信息。

* 注意：序列化的类要实现Serializeable接口

*/

public class SerializeableDemo01 {

public static void main(String[] args) throws Exception {

Student student = new Student("老王", "laoW");

Student student2 = new Student("老张", "laoZ");

Student student3 = new Student("老李", "laoL");

ArrayList<Student> arrayList = new ArrayList<>();

arrayList.add(student);

arrayList.add(student2);

arrayList.add(student3);

//序列化操作(先注释掉下面执行；注释掉在执行下面的操作)

// serializ(arrayList);

//反序列化

ObjectInputStream ois = new ObjectInputStream(new FileInputStream("list.txt"));

ArrayList<Student> list = (ArrayList<Student>) ois.readObject();

for (int i = 0; i < list.size(); i++) {

Student s = list.get(i);

System.out.println(s.getName() + "---" + s.getPwd());

}

}

private static void serializ(ArrayList<Student> arrayList) throws Exception {

String path = "./Basics/src/io/list.txt";

//创建序列化流

ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(path));

//写出对象

oos.writeObject(arrayList);

oos.close();

}

}