Java序列化

常规的序列化与反序列化

package com.duoduo.day321;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class Person implements Serializable{
	private static final long serialVersionUID=1L;
	private String name;
	private int age;
	private int num;
	public int getNum() {
		return num;
	}
	public void setNum(int num) {
		this.num = num;
	}
	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 String toString() {
		return "Name:"+name+";age:"+age+";num:"+num;
	}
	//写对象的操作
	public  static void writeObject(Object obj,String filePath) {
		try {
			FileOutputStream fos=new FileOutputStream(filePath);
			ObjectOutputStream oos=new ObjectOutputStream(fos);
			oos.writeObject(obj);
			oos.flush();
			fos.flush();
			oos.close();
			fos.close();
			System.out.println("序列化成功");
		}catch(Exception ex) {
			ex.printStackTrace();
		}
	}
	
	//读操作
	public static Object readObject(String filePath) {
		try {
			FileInputStream fis=new FileInputStream(filePath);
			ObjectInputStream ois=new ObjectInputStream(fis);
			Object temp=ois.readObject();
			fis.close();
			ois.close();
			if(temp!=null) {
				System.out.println("反序列化成功");
				return temp;
			}
			
		}catch(Exception ex) {
			ex.printStackTrace();
		}
		return null;
	}
	//序列化  与 反序列化
	public static void main(String [] args) {
		//Person p=new Person();
		//p.setAge(20);
		//p.setName("duoduo");
		//p.setNum(33);
		//System.out.println(p);
		Person p=(Person)readObject("D:\\Java\\demo\\day321\\person.obj");
		if(p!=null) {
			System.out.println(p);
		}
		//writeObject(p,"D:\\Java\\demo\\day321\\person.obj");
	}
}

 

文件 person.obj已经存在

加transient 修饰，不进行序列化：

public class Person implements Serializable{
	private static final long serialVersionUID=1L;
	private String name;
	private transient int age;   //修饰age
	private int num;

  

序列化之后  再读取age由20变成0   ，说明没有序列化。