实现Serializable接口的可控制序列化实现

实现序列化接口Serializable也可以控制对变量和transient变量的序列化控制，请看代码

package com.bird.thinking;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
/**
 * @use 实现Serializable接口的可控制序列化实现
 * @author Bird
 *
 */
public class SerialCtl implements Serializable {
	private static final long serialVersionUID = 1L;
	private String a;
	private transient String b;//注意其为transient
	public SerialCtl(String aa, String bb){
		a = "Not Transient : " + aa;
		b = "Transient :" + bb;
	}
	
	public String toString(){
		return a + "\n" + b;
	}
	
	private void writeObject(ObjectOutputStream stream) throws Exception{
		stream.defaultWriteObject();//调用原来的方法写入非transient变量
		stream.writeObject(b);//自己写方法序列化transient变量
	}
	
	private void readObject(ObjectInputStream stream) throws Exception{
		stream.defaultReadObject();//默认读取非transient变量
		b = (String) stream.readObject();
	}
	
	
	public static void main(String[] args) throws Exception{
		SerialCtl sc = new SerialCtl("test1", "Test2");
		System.out.println("Before:\n" + sc);
		ByteArrayOutputStream buf = new ByteArrayOutputStream();
		ObjectOutputStream  o = new ObjectOutputStream(buf);
		o.writeObject(sc);
		Thread.sleep(500);
		//现在要反序列化了哦
		ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(buf.toByteArray()));
		SerialCtl sc2 = (SerialCtl) in.readObject();
		System.out.println("After:\n" + sc2);
	}
}

运行结果为

Before:
Not Transient : test1
Transient :Test2
After:
Not Transient : test1
Transient :Test2

可以发现,transient变量照样被序列化和反序列化了