java Image转byte

public static byte[] getImageToByteArr(Image src) throws IOException {
        int width = (int)(src.getWidth(null)); 
        int height = (int)(src.getHeight(null)); 
        //将设置好的图片追加到BufferedImage中 
        BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); 
        Graphics2D graphics = bufferedImage.createGraphics(); 
        //重构图片 
        graphics.drawImage(src, 0, 0, width, height, null); 
        ByteArrayOutputStream bs =new ByteArrayOutputStream(); 
        ImageOutputStream imOut;
        imOut = ImageIO.createImageOutputStream(bs);
        ImageIO.write(bufferedImage,"jpg",imOut);
        return bs.toByteArray();
    }