深度clone

最新推荐文章于 2025-11-16 03:34:29 发布

原创最新推荐文章于 2025-11-16 03:34:29 发布 · 145 阅读

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CC 4.0 BY-SA版权

这招好使，深度clone不用一个个的set考虑关系了。

    public static byte[] toByteArray(Object object) throws IOException {
        if (object == null) return new byte[0];

        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(new BufferedOutputStream(bos));

        try {
            oos.writeObject(object);
            oos.flush();

            return bos.toByteArray();
        } finally {
            bos.close();
            oos.close();
        }
    }

    public static Father fromByteArray(byte[] bytes) throws IOException, ClassNotFoundException {
        ObjectInputStream ois = null;

        try {
            ois = new ObjectInputStream(new BufferedInputStream(new ByteArrayInputStream(bytes)));
            return (Father) ois.readObject();
        } finally {
            try {
                if (ois != null) ois.close();
            } catch (IOException e) {}
        }
    }

    public byte[] toByteArray() throws IOException {
        return toByteArray(this);
    }

    @Override
    public Father clone() throws CloneNotSupportedException {
        Father model = null;
        try {
            model = Father.fromByteArray(this.toByteArray());
        } catch (Exception e) {
            throw new CloneNotSupportedException(e.getMessage());
        }

        return model;
    }