serialization 序列化

序列化 -> 将对象转化为字节序列的过程称为序列化

反序列化 -> 把字节序列恢复为对象的过程叫反序列化

使用地方

内存中的对象保存到一个文件或数据库中

用套接字(socket)在网络上传送对象的时候

想通过RMI传输对象的时候

按照我的理解就是,把钱(对象)转到卡(序列化bit)上,方便转账.当要使用现金(对象)的地方,可以把卡转成现金使用. 主类

package com.fallsown;

import java.io.*;

/**
 * @author fallsown
 * @date 2021/1/26 10:23
 */
public class Fallsown {
    public static void main(String[] args){
        Dog dog = new Dog();
        try {
            serializeDog();
            dog = deserializeDog();
        }catch (Exception e){
            e.printStackTrace();
        }
        System.out.println(dog.toString());
    }

    /**
     * 序列化
     */
    private static void serializeDog() throws Exception{
        Dog dog = new Dog();
        dog.setWeight("58") ;
        dog.setName("Wang Chai");
        dog.setAddTip("is a dog");
        ObjectOutputStream oss = new ObjectOutputStream(new FileOutputStream(new File("d:/dog.txt")));
        try {
            oss.writeObject(dog);
            System.out.println("序列化成功");
            oss.close();
        }catch (Exception e){
            e.printStackTrace();
        }
    }

    /**
     * 反序列化
     */
    private static Dog deserializeDog() throws Exception {
        ObjectInputStream ois = new ObjectInputStream(new FileInputStream(new File("d:/dog.txt")));
        Dog dog = new Dog();
        try {
            dog = (Dog) ois.readObject();
            System.out.println("对象反序列化成功");
        }catch (Exception e){
            e.printStackTrace();
        }
        return dog;
    }
}

序列化对象

package com.fallsown;

import java.io.Serializable;

/**
 * @author fallsown
 * @date 2021/1/26 10:15
 */
public class Dog implements Serializable {
    private static String BREED = "369";
    private String name;
    private String weight;
    transient private String car;

    private String addTip;

    public static String getBREED() {
        return BREED;
    }

    public static void setBREED(String BREED) {
        Dog.BREED = BREED;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getWeight() {
        return weight;
    }

    public void setWeight(String weight) {
        this.weight = weight;
    }

    public String getCar() {
        return car;
    }

    public void setCar(String car) {
        this.car = car;
    }

    public String getAddTip() {
        return addTip;
    }

    public void setAddTip(String addTip) {
        this.addTip = addTip;
    }

    @Override
    public String toString(){
        return "Dog{" +
                "name='" + name + '\'' +
                ", weight='" + weight + '\'' +
                ", car='" + car + '\'' +
                ", BREED='" + BREED+ '\'' +
                '}';
    }
}