Java 如何将可序列化对象转换为一个字节数组呢?

定义一个ByteArrayOutputStream 对象
定义一个ObjectOutputStream对象
        使用objectOutputStream的writeObject方法
        即可将一个对象转换为字节数组

反之操作,即可实现字节数组转换为序列化对象

ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream out = null;
try {
  out = new ObjectOutputStream(bos);   
  out.writeObject(yourObject);
  out.flush();
  byte[] yourBytes = bos.toByteArray();
  ...
} finally {
  try {
    bos.close();
  } catch (IOException ex) {
    // ignore close exception
  }
}

字节数组创建对象

ByteArrayInputStream bis = new ByteArrayInputStream(yourBytes);
ObjectInput in = null;
try {
  in = new ObjectInputStream(bis);
  Object o = in.readObject(); 
  ...
} finally {
  try {
    if (in != null) {
      in.close();
    }
  } catch (IOException ex) {
    // ignore close exception
  }
}