被序列化和反序列化的对象需要实现Serializable接口/** * 对象序列化 */public static byte[] serialize(Object obj) {    ObjectOutputStream obi = null;    ByteArrayOutputStream bai = null;    try {        bai = new ByteArrayOutputStream();        obi = new ObjectOutputStream(bai);        obi.writeObject(obj);        byte[] byt = bai.toByteArray();        return byt;    } catch (IOException e) {        e.printStackTrace();    }    return null;}/** * 对象反序列化 * @param byt * @return */public static Object unserizlize(byte[] byt) {    ObjectInputStream oii = null;    ByteArrayInputStream bis = null;    bis = new ByteArrayInputStream(byt);    try {        oii = new ObjectInputStream(bis);        Object obj = oii.readObject();        return obj;    } catch (Exception e) {        e.printStackTrace();    }    return null;}