Java序列化之transient和serialVersionUID的使用

package FileDemo;

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

class Person implements Serializable {
    /*
     * 接口标记，需要被序列化的对象必须实现Serializable接口 否则会出现NotSerializableException异常
     */
    // 自定义 serialVersionUID，用于判断类和对象是否为同一版本
    private static final long serialVersionUID = 42L;
    private String name;
    /*
     * 非静态数据不想被序列化可以使用transien修饰
     */
    private transient int age;//用transie修饰后name将不会被序列化

    public Person(String name, int age) {
        super();
        this.name = name;
        this.age = age;
    }

    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 class ObjectStreamDemo {

    /**
     * @param args
     * @throws Exception
     */
    public static void main(String[] args) throws Exception {

        writeObject();
        readObject();
    }

    private static void readObject() throws Exception {
        ObjectInputStream ois = new ObjectInputStream(new FileInputStream(
                "object.object"));
        Person obj = (Person) ois.readObject();
        System.out.println(obj.getName() + ":" + obj.getAge());
    }

    private static void writeObject() throws IOException, IOException {// 对象的序列化
        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(
                "object.object"));
        oos.writeObject(new Person("Java", 20));
        oos.writeObject(new Person("python", 40));
        oos.writeObject(new Person("linux", 50));
        oos.writeObject(new Person("ruby", 46));
        oos.close();
    }

}