You're doing a two-stage transformation here: first a transformation using a
stylesheet, which then feeds its output in the form of a SAXSource to a JAXP
identity transform which converts the SAXSource to a StreamResult.

I don't know why you're doing this or why it adds newlines, but it does mean
that the xsl:output is going to be ignored because the output of the
stylesheet is not serialized.

What happens if you remove the (apparently unnecessary) second step?

Umm, being a bear of very little brain, can you explain what I need to
change below to do this? Sorry to be so dense...

  SAXParserFactory spf = SAXParserFactory.newInstance();
  spf.setNamespaceAware(true);
  SAXParser parser = spf.newSAXParser();
  reader = parser.getXMLReader();
  stf = (SAXTransformerFactory) TransformerFactory.newInstance();
  String s = serializeTree();
  System.out.println("DEBUG: " + s);     // <------- DEBUG
  InputSource input = new InputSource(new StringReader(s));
  filter = stf.newXMLFilter(new StreamSource(stylesheet));
  filter.setParent(reader);
  StreamResult result = new StreamResult(response.getWriter());
  Transformer transformer = stf.newTransformer();
  SAXSource transformSource = new SAXSource(filter, input);
  transformer.transform(transformSource, result);

----------------------------------------------------------------------
 John English              | mailto:je@xxxxxxxxxxxxxx
 Senior Lecturer           | http://www.it.bton.ac.uk/staff/je
 School of Computing & MIS | "Those who don't know their history
 University of Brighton    |  are condemned to relive it" (Santayana)
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