如何将 ImageView 转换为 InputStream

Question

我有一个包含图像的ImageView，我需要制作ImageView 的getImage() 并将其转换为InputStream。这是我的代码：

try {

    File fileImage = new File(ivImage.getImage());

    InputStream isImage = (InputStream) new FileInputStream(fileImage);

} catch (FileNotFoundException e) {
    e.printStackTrace();
}

有没有办法获取ImageView 图像并将其转换为InputStream ？

谢谢

Answer 1

如果您从图像中获取字节并创建 ByteArrayInputStream 会怎样？

ImageView view = new ImageView();
BufferedImage bImage = SwingFXUtils.fromFXImage(view.getImage(), null);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
try {
    ImageIO.write(bImage, "png", outputStream);
    byte[] res  = outputStream.toByteArray();
    InputStream inputStream = new ByteArrayInputStream(res);
} catch (IOException e) {
    e.printStackTrace();
}