XML & XSL in Servlet

[Elisabeth Van]

I'm trying to use XML and XSL within a servlet to produce HTML output.
From the command line, I can use

java org.apache.xalan.xslt.Process -IN xmldoc.xml -XSL xsldoc.xsl -OUT htmldoc.html

and I get the results that I want.
I have tried accomplishing the same thing via a servlet (in Tomcat) using

 TransformerFactory tFactory = TransformerFactory.newInstance();
Source xmlSource = new StreamSource(new File("xmldoc.xml"));
Source xslSource = new StreamSource(new File("xsldoc.xsl"));
Transformer transformer = tFactory.newTransformer(xslSource);
transformer.transform(xmlSource, new StreamResult(out)); 

as well as with

XSLTProcessor processor = new XSLTProcessorFactory().getProcessor();
processor.process(new XSLTInputSource(new FileInputStream("xmldoc.xml")), new XSLTInputSource(new FileInputStream("xsldoc.xsl")),new XSLTResultTarget(out));

Either of these versions will compile, but when I access the servlet via the browser, I get the following error:

java.lang.NoSuchMethodError: org.w3c.dom.Node: method isSupported(Ljava/lang/Str
ing;Ljava/lang/String ;)Z not found
        at org.apache.xpath.axes.RootWalkerMultiStep.getNextNode(RootWalkerMulti
Step.java:106)
        at org.apache.xpath.axes.ChildWalkerMultiStep.nextNode(ChildWalkerMultiS
tep.java, Compiled Code)
        at org.apache.xpath.axes.LocPathIterator.nextNode(LocPathIterator.java:6
89)
        at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemFor
Each.java, Compiled Code)
        at org.apache.xalan.templates.ElemForEach.execute(ElemForEach.java:228)
        at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(Tr
ansformerImpl.java, Compiled Code)
        at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResul
t.java, Compiled Code)
        at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(Tr
ansformerImpl.java, Compiled Code)
        at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResul
t.java, Compiled Code)
        at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(Tr
ansformerImpl.java, Compiled Code)
        at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResul
t.java, Compiled Code)
        at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(Tr
ansformerImpl.java, Compiled Code)
        at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResul
t.java, Compiled Code)
        at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(Tr
ansformerImpl.java, Compiled Code)
        at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(Tran
sformerImpl.java:2085)
        at org.apache.xalan.transformer.TransformerImpl.transformNode(Transforme
rImpl.java, Compiled Code)
        at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java
:2942)
        at java.lang.Thread.run(Thread.java:479)

Anyone have any ideas on this? Thanks!

[ Ajith disabled smilies in this post ]
[This message has been edited by Ajith Kallambella (edited May 18, 2001).]

[Elisabeth Van]

Just in case anyone else runs into this problem, thought I'd post the solution to the problem that I was having.
What was causing problems for me was having parser.jar in my tomcat lib directory. Once I removed this, all was well.
Of course what I don't know now is what the purpose of parser.jar was, or if it's actually needed if I have the xalan.jar and xerces.jar files.

[Laurent Kempeneers]

I already answered to the same problem in the posted question "how to use Xalan with Weblogic as a web server" in the same forum.
I propose you to have a look !-)

[Darryl Andrew]

Hi, i did not use a Weblogic server, i'm using tomcat.
I also did not have parser.jar in my folder and xalan.jar is before xerces.jar in my classpath but i still get the following error when i access the servlet from the browser.
Error: java.lang.ClassNotFoundException: org.apache.xalan.xslt.XSLTProcessorFactory
Can anybody pls help?