如何将Base64（imageurl）转换为图像

Question

I have to convert image URL into an image. For that I tried following coding for convert base64 to an image. While on debugging the code "Bufferedimage image" is always null after ByteArrayInputStream bis=new ByteArrayInputStream(imagebyte) . What can I do?

   String imageStr = request.getParameter("imgURL");
   BufferedImage image = null;

    try {
        BASE64Decoder decoder = new BASE64Decoder();
     byte[] imageByte = decoder.decodeBuffer(imageStr);
        ByteArrayInputStream bis = new ByteArrayInputStream(imageByte);
        image = ImageIO.read(bis);
        File outputfile = new File("E:\\saved.png");
         ImageIO.write(image, "png", outputfile);
        bis.close();
    } catch (Exception e) {
        e.printStackTrace();
    }

Answer 1

I have to convert image URL into an image.

If that is your only requirement, then will this do?

 URL url = new URL("www.example.com/image.png");
 BufferedImage image = ImageIO.read(url);
 File outputfile = new File("E:\\saved.png");
 ImageIO.write(image, "png", outputfile);