java 深copy

public static<T> T deepClone(T src) throws IOException, ClassNotFoundException {
        Object obj = null;
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
        objectOutputStream.writeObject(src);
        objectOutputStream.close();
        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArrayOutputStream.toByteArray());
        ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
        obj = objectInputStream.readObject();
        objectInputStream.close();
        return (T) obj;
    }