java 序列化和反序列化多个对象

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
class Person implements Serializable{
    private transient String name;//设置transient，name不会被序列化
    private int age;
    public Person(String name,int age){
        this.name=name;
        this.age=age;
    }
    public String toString(){
        return "姓名:"+this.name+";姓名:"+this.age;
    }
}
public class CharSetDemo {
    public static void main(String[] args) throws Exception {
        Person per[]={
                new Person("张三",30),new Person("李四",31),new Person("王五",32)
        };
        ser(per);
        Object o[]=dser();
        for(int i=0;i<o.length;i++){
            Person p=(Person) o[i];
            System.out.println(p);
        }
    }
public static void ser(Object obj[]) throws Exception{
    File f=new File("d:"+File.separator+"test.txt");
    OutputStream out=new FileOutputStream(f);
    ObjectOutputStream oos=null;
    oos=new ObjectOutputStream(out);
    oos.writeObject(obj);
    oos.close();
}
public static  Object[] dser() throws Exception{
    File f=new File("d:"+File.separator+"test.txt");
    ObjectInputStream ois=null;
    InputStream ipt=new FileInputStream(f);
    ois=new ObjectInputStream(ipt);
    Object obj[]=(Object []) ois.readObject();
    ois.close();
    return obj;
}
}