序列化、反序列化

package demo;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;

public class SerializeDemo {
	private static final File SAVE_FILE=new File("D:"+File.separator+"save.person");
	
	public static void main(String[] args) throws Exception {
		//序列化，指将对象转化为二进制，用来保存/网络传输
		//序列化(ObjectOutputStream,writeObject)与反序列化(ObjectInputStream,readObject)
		//transient关键字，使得变量不做序列化（取默认值）
		saveObject(new Person("赵二三", 23));
		System.out.println(loadObject());
	}
	public static void saveObject(Object obj) throws Exception {
		ObjectOutputStream oos=new ObjectOutputStream(new FileOutputStream(SAVE_FILE)	);
		oos.writeObject(obj);
		oos.close();
	}
	public static Object loadObject() throws Exception  {
		ObjectInputStream ois=new ObjectInputStream(new FileInputStream(SAVE_FILE)	);
		Object obj=ois.readObject();
		ois.close();
		return obj;
	}
}


@SuppressWarnings("serial")
class Person implements Serializable{		//实现Serializable接口，使得Person类可以被序列化
	private String name;
	private int age;
	
	public Person(String name,int age) {
		this.name=name;
		this.age=age;
	}
	public String toString() {
		return "姓名："+this.name+" ， 年龄："+this.age;
	}
}