Hello everyone. By any chance can someone point me to some example code
which uses render(dom)? No matter what combination of driver methods or Fop
versions (.17,.19,.20.1) I use I seem to get the same error:
building formatting object tree
setting up fonts
java.lang.NullPointerException
at java.util.Hashtable.get(Hashtable.java:320)
at
org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:191)
at
org.apache.fop.tools.DocumentReader.parse(DocumentReader.java:444)
at org.apache.fop.apps.Driver.render(Driver.java:449)
at FOtoPDF.applyFop(FOtoPDF.java:83)
at FOtoPDF.main(FOtoPDF.java:24)
Here is the source I'm using under v.0.20.1:
org.apache.fop.apps.Driver driver = new org.apache.fop.apps.Driver();
driver.setRenderer(org.apache.fop.apps.Driver.RENDER_PDF);
driver.setOutputStream(new FileOutputStream(pdfFilename));
driver.setupDefaultMappings() ;
driver.addElementMapping("org.apache.fop.fo.StandardElementMapping");
driver.addElementMapping("org.apache.fop.svg.SVGElementMapping");
driver.addElementMapping("org.apache.fop.extensions.ExtensionElementMapping"
);
driver.render(dom);
I have tried it with and without any of the mapping methods.
I am building the Dom object from a file. The sax input handler created from
the same file works fine in render(parser, inputSource). I have read through
the dev archives and found a few suggestions but none helped. Is there some
configuration I'm missing? Or did this "break a long time ago" as someone
suggested in the archives?
I am hoping to use FOP in a major production app, but if I can't solve this
I may not be able to. I am currently receiving a DOM object (a small report)
from some database access classes. I then perform an XSLT transform which
outputs my FO input as another DOM object. I suppose I could pipe the output
of that to SAX? I'd really rather not have to do anything klugy like
serialize it to a stream and then feed it in as SAX. But I'll consider
anything that doesn't cause too much of a performace hit. We definitely
don't want to have temp files sitting around, for a host of reasons.
Thank you very much for your help.
Matt Savino
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