import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;   

public class ObjectAndByte {   

    /**

     * 对象转数组

     * @param obj

     * @return

     */

    public byte[] toByteArray (Object obj) {

        byte[] bytes = null;

        ByteArrayOutputStream bos = new ByteArrayOutputStream();

        try {

            ObjectOutputStream oos = new ObjectOutputStream(bos);

            oos.writeObject(obj);

            oos.flush();

            bytes = bos.toByteArray ();

            oos.close();

            bos.close();

        } catch (IOException ex) {

            ex.printStackTrace();

        }

        return bytes;

    }   

    /**

     * 数组转对象

     * @param bytes

     * @return

     */

    public Object toObject (byte[] bytes) {

        Object obj = null;

        try {

            ByteArrayInputStream bis = new ByteArrayInputStream (bytes);

            ObjectInputStream ois = new ObjectInputStream (bis);

            obj = ois.readObject();

            ois.close();

            bis.close();

        } catch (IOException ex) {

            ex.printStackTrace();

        } catch (ClassNotFoundException ex) {

            ex.printStackTrace();

        }

        return obj;

    }   

}