How to convert Byte Array to image using itextPdf and display in pdf

Question

How to convert byte array to image in itext pdf and display in pdf. This is what i am doing but i am getting nullpointer exception..

    Base64 decoder = new Base64();
    byte[] imageByte = decoder.decode(imageInBase64EncodedString);
        Image image = null;
        try {
            image = Image.getInstance(imageByte);
        } catch (BadElementException e1) {
            e1.printStackTrace();
        } catch (MalformedURLException e1) {
            e1.printStackTrace();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
        try {
            image.scalePercent(15f);  <-----Here i am getting NullPointer Exception
            image.scaleAbsoluteWidth(520f);
            image.setAbsolutePosition(40f,725f);
            document.add(image);
       }catch(Exception e){
            e.printStackTrace();
       }

I am not understanding why image is not created even i pass them bytes.

Answer 1

The problem is most likely the String value you're passing in, as it's very likely you're running into an exception for bad formatting in the value.

I've tried your example, using a BASE64 String example from PasteBin ( http://pastebin.com/bfc1E1NV ) that someone was kind enough to post, and was successful in running the scripts as per your code provided.

ItextPdf Example

Screenshot 1

Screenshot 2 (image Object is not null)

org.apache.commons.codec.binary.Base64Example