java中DTO clone

public static <T> T clone(T obj) throws Exception {

ObjectOutputStream oos = null;

ByteArrayOutputStream bos = null;

ObjectInputStream ois = null;

bos = new ByteArrayOutputStream();

oos = new ObjectOutputStream(bos);

oos.writeObject(obj);

oos.flush();

ois = new ObjectInputStream(new ByteArrayInputStream(bos.toByteArray()));

return (T) ois.readObject();

}