org.xml.sax.SAXParseException

[Jason Menard]

I'm trying to get the example at http://www-106.ibm.com/developerworks/java/library/x-tipjdom.html working. The basic idea is to take an xml document and then transform it into another xml document using a stylesheet. I am then trying to display the new document. I keep receiving the following errors at runtime:

org.jdom.JDOMException: Error on line 5: The element type "META" must be terminated by the matching end-tag "</META>".
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:407)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:428)
at xmltest.XSLTProcessor.transform(XSLTProcessor.java:83)
at xmltest.XSLTProcessor.main(XSLTProcessor.java:109)
Root cause: org.xml.sax.SAXParseException: The element type "META" must be terminated by the matching end-tag "</META>".
at org.apache.xerces.framework.XMLParser.reportError(XMLParser.java:1150)
at org.apache.xerces.framework.XMLDocumentScanner.reportFatalXMLError(XMLDocumentScanner.java:635)
at org.apache.xerces.framework.XMLDocumentScanner.abortMarkup(XMLDocumentScanner.java:684)
at org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1192)
at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1035)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:395)
at org.jdom.input.SAXBuilder.build(SAXBuilder.java:428)
at xmltest.XSLTProcessor.transform(XSLTProcessor.java:83)
at xmltest.XSLTProcessor.main(XSLTProcessor.java:109)
java.lang.NullPointerException
at org.jdom.output.XMLOutputter.output(XMLOutputter.java:521)
at org.jdom.output.XMLOutputter.output(XMLOutputter.java:493)
at xmltest.XSLTProcessor.main(XSLTProcessor.java:119)

The line numbers in the errors won't map to the code below, but line #83 is the line that reads: resultDoc = saxBuilder.build(resultIn);
Here are the relevant portions of my code:

import java.io.*;
import java.util.*;
// JDOM imports
import org.jdom.Document;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
// Xalan-J 2 imports
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Templates;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.stream.StreamResult;
public class XSLTProcessor
{
    public Document transform(Document sourceDoc, File stylesheetFile)
    {
        Document resultDoc = null;
        try
        {
            // Set up the XSLT stylesheet for use with Xalan-J 2
            TransformerFactory transformerFactory = TransformerFactory.newInstance();
            Templates stylesheet = transformerFactory.newTemplates(new StreamSource(stylesheetFile));
            Transformer processor = stylesheet.newTransformer();
            // Use I/O streams for source files
            PipedInputStream sourceIn = new PipedInputStream();
            PipedOutputStream sourceOut = new PipedOutputStream(sourceIn);
            StreamSource source = new StreamSource(sourceIn);
            // Use I/O streams for output files
            PipedInputStream resultIn = new PipedInputStream();
            PipedOutputStream resultOut = new PipedOutputStream(resultIn);
            // Convert the output target for use in Xalan-J 2
            StreamResult result = new StreamResult(resultOut);
            // Get a means for output of the JDOM Document
            XMLOutputter xmlOutputter = new XMLOutputter();
            // Output to the I/O stream
            xmlOutputter.output(sourceDoc, sourceOut);
            sourceOut.close();
            // Feed the resultant I/O stream into the XSLT processor
            processor.transform(source, result);
            resultOut.close();
            // Convert the resultant transformed document back to JDOM
            SAXBuilder saxBuilder = new SAXBuilder();
            resultDoc = saxBuilder.build(resultIn);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        return resultDoc;
   }
    public static void main(String[] args)
    {
        Document doc = null;
        Document htmlDoc = null;
        String file = "car.xml";
        String sheet = "car.xsl";
        XSLTProcessor xp = new XSLTProcessor();
        File xmlFile = new File("D:\\prog\\xmlTest\\" + file);
        File xslFile = new File("D:\\prog\\xmlTest\\" + sheet);
        SAXBuilder builder = new SAXBuilder();
        try
        {
            doc = builder.build(xmlFile);
            htmlDoc = xp.transform(doc, xslFile);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        try
        {
            XMLOutputter out = new XMLOutputter();
            out.output(htmlDoc, System.out);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
}

Here is car.xml

<?xml version="1.0" encoding="UTF-8"?>
<car vin="123fhg5869705iop90">
  <!--Description of a car-->
  <make>Toyota</make>
  <model>Celica</model>
  <year>1997</year>
  <color>green</color>
  <license state="CA">1ABC234</license>
</car>

and car.xsl

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:template match="car">
    <html>
      <head>
        <title><xsl:value-of select="make"/> <xsl:value-of select="model"/></title>
      </head>
      <body>
        <h1><xsl:value-of select="make"/></h1><br />
        <h2><xsl:value-of select="model"/></h2><br />
        <table border="0">
          <tr><td>VIN:</td><td><xsl:value-of select="@vin"/></td></tr>
          <tr><td>Year:</td><td><xsl:value-of select="year"/></td></tr>
          <tr><td>Color:</td><td><xsl:value-of select="color"/></td></tr>
        </table>
      </body>
    </html>
  </xsl:template>
</xsl:stylesheet>

I am XML clueless, so any help would be greatly appreciated.
Thanks,
Jason

[This message has been edited by Jason Menard (edited June 26, 2001).]

[Jason Menard]

Guess I'll answer my own question.
There was something wrong with the XML and/or XSL files. It was just a test so I grabbed some sample files from elsewhere.
The other problem with the code was the Piped Streams. These can cause a thread deadlock if used in the same thread. The answer (without resorting to multithreading) was to use ByteArray Streams.