Tomcat still crashing on 3.4c even after PDFBox/Fontbox fix

icrew — Mon, 24 Oct 2011 15:43:45 GMT

Hi all:I'm having real trouble with tomcat crashing on my 3.4c install. Sometimes the crash happens a couple of minutes after I start it, sometimes it can be several hours. There doesn't appear to be a consistent cause–the crashes can happen even when I *know* no one is accessing the system. The

Re: Tomcat still crashing on 3.4c even after PDFBox/Fontbox fix

irvingpop — Thu, 27 Oct 2011 23:49:36 GMT

Ditch the included Java. In my experience, standard Sun Java (now 1.6.26) is much more stable and stopped Alfresco crashing issues for me.

Same goes for the other binaries included by Alfresco, especially OpenOffice and pdf2swf.

Re: Tomcat still crashing on 3.4c even after PDFBox/Fontbox fix

cbernardi — Fri, 07 Sep 2012 11:41:56 GMT

Hi, same problem, Centos 64bit, Alfresco-4.0.d.
In this distribution PdfBox and FontBox already are updated as suggested by other users.

Uploading, showing file in search result or visiting preview page of particular PDF's caused tomcat (JVM) crash with no indication in log file.

After a research, it turned out it's PdfRenderer (in my installation PdfRenderer-0.9.1.jar)
(see this issue, I've reported here my solution: http://java.net/jira/browse/PDF_RENDERER-127)

So, I've solved downloading PdfRenderer source and editing class com.sun.pdfview.PDFRenderer in this way:

substitute method with:

private BasicStroke autoAdjustStrokeWidth(Graphics2D g, BasicStroke bs) {
        AffineTransform bt = new AffineTransform(g.getTransform());
        float width = bs.getLineWidth() * (float) bt.getScaleX();
        BasicStroke stroke = bs;
        if (width < 1f) {
            if (bt.getScaleX() > 0.01) {
                width = 1.0f / (float) bt.getScaleX();
            } else {
                // prevent division by a really small number
                width = 1.0f;
            }
        }
                stroke = new BasicStroke(width,
                bs.getEndCap(),
                bs.getLineJoin(),
                bs.getMiterLimit(),
                getDashArray(bs),
                bs.getDashPhase());

        return stroke;
    }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

and add this method:

private float[] getDashArray(BasicStroke bs) {
                float[] dashArray = bs.getDashArray();

                if (dashArray != null) {
                        int arrayLength = dashArray.length;
                        float dash;
                        for (int i = 0; i<arrayLength; i++) {
                                dash = dashArray[i];
                                if (dash == 1.0E-5f) {
                                        dashArray[i] = 0.01f;
                                }
                        }
                }
                return dashArray;
        }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

I've compiled the jar and substitute in alfresco library.

Hope this helps

topic Tomcat still crashing on 3.4c even after PDFBox/Fontbox fix in Alfresco Archive

Tomcat still crashing on 3.4c even after PDFBox/Fontbox fix

Re: Tomcat still crashing on 3.4c even after PDFBox/Fontbox fix

Re: Tomcat still crashing on 3.4c even after PDFBox/Fontbox fix