Re: Problems with Apache FOP and Barcode4j

[Jeremias Maerki]

On 20.08.2008 18:26:17 Andreas Delmelle wrote:
> On Aug 20, 2008, at 16:56, Miguel Tablado wrote:
> 
> Hi
> 
> > I'm upgrading my FOP version from 0.20 up to 0.95 and I'm getting two
> > problems.
> >
> > The first one, and most important, is that I can't generate  
> > barcodes with
> > Apache FOP and Barcode4j projects. I don't know why but I'm getting  
> > this
> > error:
> > javax.xml.transform.TransformerException: org.xml.sax.SAXException:
> > Mismatch: page-sequence (http://www.w3.org/1999/XSL/Format) vs. root
> > (http://www.w3.org/1999/XSL/Format)
> >
> > I know that this error uses to be a follow-up error but I have no more
> > detail and I'm lost since I have reached a strange situation.
> 
> Just to be sure: Can you try using a different XSLT processor (or  
> simply a more recent version of Xalan)? Reason I'm asking is that I  
> seem to remember that some Xalan versions swallow exceptions. It  
> recovers, hands control back over to FOP, but the node in question  
> (where the error originates; if I judge correctly, the page-sequence  
> in question) will still not have been processed completely, so FOP  
> will have received a startElement(), but no endElement().

An alternative is to just set a simple ErrorListener implementation on
the Transformer to override Xalan's default ErrorListener. I've attached
one I've written once I've stumbled over this Xalan bug.

> Not that this will immediately solve your issue, but if the XSLT  
> processor would terminate, then you should at least get a more  
> appropriate error-message.
> 
> Another thing to try to receive a more meaningful error message:
> - first generate the FO from the XML+XSLT (by means of the '-foout'  
> command-line option), and check if the FO is valid XML
> - if the first step succeeds, then render the resulting FO to the  
> desired output format, preferably in debug-mode ('-d') to receive as  
> much relevant info as possible.
> 
> If this doesn't help, don't hesitate to post back here!
> 
> 
> HTH!
> 
> Andreas


Jeremias Maerki

DefaultErrorListener.java
Description: Binary data

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