Transforming XML Data with XSLT in a servlet

Question

Trying to transform XML data using XSLT. The following code works fine outside of a servlet. But in a servlet it gives the following error :
* Transformer Factory error
javax.xml.transform.TransformerConfigurationException: javax.xml.transform.TransformerException: org.xml.sax.SAXException: Namespace not supported by SAXParser
javax.xml.transform.TransformerConfigurationException: javax.xml.transform.TransformerException: org.xml.sax.SAXException: Namespace not supported by SAXParser
     at org.apache.xml.utils.DefaultErrorHandler.fatalError(DefaultErrorHandler.java:257)
     at org.apache.xalan.processor.TransformerFactoryImpl.newTransformer(TransformerFactoryImpl.java:813)
     at TransformationApp.XSLTTransformServlet.MyTransform(XSLTTransformServlet.java:79)
     at TransformationApp.XSLTTransformServlet.doGet(XSLTTransformServlet.java:39)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
     at org.apache.tomcat.core.Handler.service(Handler.java:287)
     at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
     at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:812)
     at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
     at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213)
     at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
     at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
     at java.lang.Thread.run(Thread.java:484)
Several articles hinted at setting the factory namespace attribute to TRUE. I have tried that but same results. Here is the code :
static Document document;
DocumentBuilderFactory factory =
DocumentBuilderFactory.newInstance();
//factory.setNamespaceAware(true);
//factory.setValidating(true);
try {
File stylesheet = new File(argv[0]);
File datafile = new File(argv[1]);
DocumentBuilder builder = factory.newDocumentBuilder();
document = builder.parse(datafile);
// Use a Transformer for output
TransformerFactory tFactory =
TransformerFactory.newInstance();
StreamSource stylesource = new StreamSource(stylesheet);
Transformer transformer = tFactory.newTransformer(stylesource);
DOMSource source = new DOMSource(document);
StreamResult result = new StreamResult(System.out);
transformer.transform(source, result);
} catch (TransformerConfigurationException tce) {
// Error generated by the parser
System.out.println ("\n** Transformer Factory error");
System.out.println(" " + tce.getMessage() );
// Use the contained exception, if any
Throwable x = tce;
if (tce.getException() != null)
x = tce.getException();
x.printStackTrace();
} catch (TransformerException te) {
// Error generated by the parser
System.out.println ("\n** Transformation error");
System.out.println(" " + te.getMessage() );
// Use the contained exception, if any
Throwable x = te;
if (te.getException() != null)
x = te.getException();
x.printStackTrace();
} catch (SAXException sxe) {
// Error generated by this application
// (or a parser-initialization error)
Exception x = sxe;
if (sxe.getException() != null)
x = sxe.getException();
x.printStackTrace();
} catch (ParserConfigurationException pce) {
// Parser with specified options can't be built
pce.printStackTrace();
} catch (IOException ioe) {
// I/O error
ioe.printStackTrace();
Any help would be greatly appreciated.

Answer 1

I don't know that this is true, but i think the problem is the classpath.
The runtime has his own parser. This parser is befor your xalan.lib in the classpath and the
parser from the runntime don't support namespace.
Try Tomcat 4.
Regard Dietmar