Java序列化和反序列化

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简介

序列化是将实例化对象转换成字节数组，反序列化是将字节数组转换成对象。

实例

前提

使需要序列化的类实现Serializable接口

public class MyMessage implements Serializable

序列化

    ByteArrayOutputStream byteArrayOutputStream=new ByteArrayOutputStream();    ObjectOutputStream objectOutputStream=new ObjectOutputStream(byteArrayOutputStream);    objectOutputStream.writeObject(object);    byte[] buffer=byteArrayOutputStream.toByteArray();    objectOutputStream.close();    byteArrayOutputStream.close();

反序列化

    ByteArrayInputStream byteArrayInputStream=new ByteArrayInputStream(buffer);    ObjectInputStream objectInputStream=new ObjectInputStream(byteArrayInputStream);    Object object=objectInputStream.readObject();    objectInputStream.close();    byteArrayInputStream.close();

测试类源码

public class Test {    public static void main(String[] args) throws InterruptedException, IOException, ClassNotFoundException {        MyMessage message=new MyMessage("123","456","Hello",new Date());        File file=new File("F://temp");        FileOutputStream outputStream=new FileOutputStream(file);        ByteArrayOutputStream byteArrayOutputStream=new ByteArrayOutputStream();        ObjectOutputStream objectOutputStream=new ObjectOutputStream(byteArrayOutputStream);        objectOutputStream.writeObject(message);        outputStream.write(byteArrayOutputStream.toByteArray());        objectOutputStream.close();        byteArrayOutputStream.close();        outputStream.close();        System.out.println("OK!");        File file2=new File("F://temp");        FileInputStream inputStream=new FileInputStream(file);        byte[] buffer = new byte[inputStream.available()];        inputStream.read(buffer);        ByteArrayInputStream byteArrayInputStream=new ByteArrayInputStream(buffer);        ObjectInputStream objectInputStream=new ObjectInputStream(byteArrayInputStream);        MyMessage message2=(MyMessage) objectInputStream.readObject();        System.out.println(message2.toString());        objectInputStream.close();        byteArrayInputStream.close();        inputStream.close();    }}

测试结果为：
OK!
MyMessage [fromIp=123, toIp=456, text=Hello, image=null, date=Wed Sep 30 15:34:45 CST 2015]

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