Processing XML with XSL

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December 14th, 2003, 07:55 AM

GSB

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Join Date: Dec 2003

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Processing XML with XSL

Hi Srivalli,

Thank you for your reply. However that seems not to be the root of my problems.
The XML file I am using is pretty simple.
<?xml version="1.0"?>
<ARTICLE>
<TITLE>A Sample Article</TITLE>
<SECT>The First Major Section
<PARA>This section will introduce a subsection.</PARA>
<SECT>The Subsection Heading
<PARA>This is the text of the subsection.
</PARA>
</SECT>
</SECT>
</ARTICLE>

and the XSL file I am using to transform this into simple HTML is

<?xml version="1.0" encoding="ISO-8859-1" ?>
- <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl

utput method="html" />
- <xsl:template match="/">
- <html>
- <body>
<xsl:apply-templates />
</body>
</html>
</xsl:template>
- <xsl:template match="/ARTICLE/TITLE">
+ <h1 align="center">
<xsl:apply-templates />
</h1>
</xsl:template>
- 
- <xsl:template match="/ARTICLE/SECT">
- <h2>
<xsl:apply-templates select="text()|B|I|U|DEF|LINK" />
</h2>
<xsl:apply-templates select="SECT|PARA|LIST|NOTE" />
</xsl:template>
- 
- <xsl:template match="/ARTICLE/SECT/SECT">
- <h3>
<xsl:apply-templates select="text()|B|I|U|DEF|LINK" />
</h3>
<xsl:apply-templates select="SECT|PARA|LIST|NOTE" />
</xsl:template>
- 
- <xsl:template match="/ARTICLE/SECT/SECT/SECT">
<xsl:message terminate="yes">Error: Sections can only be nested 2 deep.</xsl:message>
</xsl:template>
- 
- <xsl:template match="PARA">
- <p>
<xsl:apply-templates />
</p>
</xsl:template>
</xsl:stylesheet>

There is a java class which takes the XML and XSL stylesheet and outputs the HTML ( In theory - in practice I get the error).

The Java code for completeness is

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;

import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.w3c.dom.Document;
import org.w3c.dom.DOMException;

// For write operation
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.stream.StreamResult;

import java.io.*;

public class Stylizer
{
// Global value so it can be ref'd by the tree-adapter
static Document document;

public static void main (String argv [])
{
if (argv.length != 2) {
System.err.println ("Usage: java Stylizer stylesheet xmlfile");
System.exit (1);
}

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();
}

} // main

}

To be honest I am following a tutorial from the Java Webservices Development Pack by SUN - even then its not working.
Any ideas? I cnt seem to find any leads as to what the problem may actually be.

Kind Regards.

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