[jira] [Commented] (PDFBOX-2055) IOException when converting PDF to image

[Hong-Thai Nguyen (JIRA)]

    [ 
https://issues.apache.org/jira/browse/PDFBOX-2055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13987751#comment-13987751
 ] 

Hong-Thai Nguyen commented on PDFBOX-2055:
------------------------------------------

Thank [~tilman], as you guessed, I mean effectively 'can't' ;)
For the test, I'm  generating first page to an Image via API:
{code}
@VisibleForTesting
  ImageResult generateImage(File localFile, int width, int height) throws 
Exception {
    BufferedImage image;
    PDDocument document = PDDocument.load(localFile);
    try {
      image = computeImage(document);
    } finally {
      document.close();
      document = null;
    }

    byte[] bytes = ImageResizer.resize(image, width, height);
    if (bytes != null && image != null) {
      return new ImageResult(bytes, "image/png", image.getWidth(), 
image.getHeight());
    } else {
      return null;
    }
  }

  private BufferedImage computeImage(PDDocument document) throws IOException {
    PDPage page = (PDPage) document.getDocumentCatalog().getAllPages().get(0);
    try {
      BufferedImage image = page.convertToImage(BufferedImage.TYPE_INT_RGB, 
resolution);
      return image;
    } finally {
      page = null;
    }
  }
{code}

I confirm that this exception is real on 1.8.4

> IOException when converting PDF to image
> ----------------------------------------
>
>                 Key: PDFBOX-2055
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2055
>             Project: PDFBox
>          Issue Type: Bug
>    Affects Versions: 1.8.4
>            Reporter: Hong-Thai Nguyen
>            Priority: Critical
>         Attachments: eu_competition_newsletter_04_june_-_10_june_2010.pdf
>
>
> With attach PDF file, we got IO Exception when using PDPage.convertToImage():
> {code}
> java.io.IOException
>       at org.apache.pdfbox.filter.FlateFilter.decode(FlateFilter.java:138)
>       at org.apache.pdfbox.cos.COSStream.doDecode(COSStream.java:336)
>       at org.apache.pdfbox.cos.COSStream.doDecode(COSStream.java:248)
>       at 
> org.apache.pdfbox.cos.COSStream.getUnfilteredStream(COSStream.java:183)
>       at 
> org.apache.pdfbox.pdfparser.PDFStreamParser.<init>(PDFStreamParser.java:107)
>       at 
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:251)
>       at 
> org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:235)
>       at 
> org.apache.pdfbox.util.PDFStreamEngine.processStream(PDFStreamEngine.java:215)
>       at org.apache.pdfbox.pdfviewer.PageDrawer.drawPage(PageDrawer.java:127)
>       at org.apache.pdfbox.pdmodel.PDPage.convertToImage(PDPage.java:801)
>       at 
> com.polyspot.connector.imageservice.generators.PDFBoxImageGenerator.computeImage(PDFBoxImageGenerator.java:75)
> {code}



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