Question

While I was playing around with pdfbox 1.7.0 (apache) I came across a NullPointerException. I can’t figure out what the hack is wrong with my code. You can see the full stacktrace of the Exception at http://pastebin.com/XEuv7VmU and the code here: http://pastebin.com/vJYBwWtq .

I just want to convert every page of a PDF into an image (BufferedImage).

Answer 1

Either I am missing something obvious or there is a bug in the library. Type3StreamParser extending PDFStreamEngine has the following method:

public Image createImage( COSStream type3Stream ) throws IOException
{
    processStream( null, null, type3Stream );
    return image.createImage();
}

it calls processStream() in the base class defined as follows:

public void processStream( PDPage aPage, PDResources resources, COSStream cosStream ) throws IOException
{
    graphicsState = new PDGraphicsState(aPage.findCropBox());
    //...
}

Clearly this code will always throw NPE. If you aren’t misusing the API somehow, consider reporting an issue.