利用序列化将java对象深拷贝

public Object deepClone() throws IOException, OptionalDataException,
			ClassNotFoundException {
		// 将对象写到流里
		ByteArrayOutputStream bo = new ByteArrayOutputStream();
		ObjectOutputStream oo = new ObjectOutputStream(bo);
		oo.writeObject(this); // 从流里读出来
		ByteArrayInputStream bi = new ByteArrayInputStream(bo.toByteArray());
		ObjectInputStream oi = new ObjectInputStream(bi);
		return (oi.readObject());
	}

this.tempTreatHistory = (TreatHistory) this.treatHistory
						.deepClone();// 将旧病历记录下来放在一个临时的变量中