有人正在提供一个s3预签名的网址，以便我可以上传我的图片到该链接。我所有的照片都在网站上。java中有没有一种方法可以将图像url复制到提供的新url中？
我正试着这么做。似乎有点过分了

try {

        // Get Image from URL
        URL urlGet = new URL("http://something.com/something.png");
        BufferedImage image = ImageIO.read(urlGet);

        //for png
        ImageIO.write(image, "png",new File("/something.png"));

        // for jpg
        //ImageIO.write(image, "jpg",new File("/something.jpg"));

        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        ImageIO.write(image, "png", outputStream);
        outputStream.flush();
        byte[] imageInBytes = outputStream.toByteArray();
        outputStream.close();

            URL url = new URL(putUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoOutput(true);
            connection.setRequestMethod(HttpMethod.PUT);
            connection.setRequestProperty(HttpHeaders.CONTENT_TYPE, PNG_MIME_TYPE);
            OutputStream stream = connection.getOutputStream();

            try {
                stream.write(imageInBytes);
            } finally {
                stream.close();
                connection.disconnect();
            }

            switch (connection.getResponseCode()) {
                case HttpURLConnection.HTTP_OK:
                    return "";
                default:
                    break;
            }

        } catch (Exception e) {
        log.error("Exception occured", e);
        throw e;
    }