Calling Java Function from XSL

Question

I'm trying something I think is fairly simple and keep getting errors during the process. I'm just trying to parse an XML file and call a java method from a simple java program called HelloWorld using an XSL stylesheet.
I get the following error: Error while parsing XSL file (Extension function namespace should start with 'http://www.oracle.com/XSL/Transform/java/'.). Here is my XSL. I know the oracle namespace is not necessary, it was added due to the error I was receiving:
<?xml version = "1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:oracle="http://www.oracle.com/XSL/Transform/java/"
xmlns:xalan="http://xml.apache.org/xalan"
xmlns:redirect="http://xml.apache.org/xalan/redirect"
xmlns:jfctn="com.raytheon.iis.temp.HelloWorld" exclude-result-prefixes="jfctn"
exclude-element-prefixes="oracle redirect"
version='1.0'>
<xsl:template match="/">
<xsl:value-of select="//title"/>
<xsl:value-of select="//author"/>
<xsl:value-of select = "jfctn:hello()"/>
</xsl:template>
</xsl:stylesheet>
Here is my java file:
public class HelloWorld {
public static String hello() {
return "Hello World";
And here is my simple XML file:
<source>
<title>XSL</title>
<author> John
Smith</author>
</source>
Any advice/ideas would be greatly appreciated. Thanks.
Jimmy

Answer 1

After some trials I've come up with a more specific issue regarding this error. Here is my new code that works on a machine that does not have a file called xmlparserv2.jar (In my stack trace I noticed it referring to the oracle.xml.parser.v2 so I'm assuming this file and path setup that refers to this file is the issue). Unfortunately I have other programs that need this file and setup so I was wondering if anyone knew some alternate setup or workaround to resolve this issue.
The following works fine for me using xalan on a server with the most recent jdk 1.4 setup.
Here is the new XSL code similar to the one listed above. The XML is the same as the previous post.
<?xml version = "1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
�xmlns:xalan="http://xml.apache.org/xalan"�
�xmlns:jfctn="xalan://com/raytheon/iis/temp/HelloWorld"
exclude-result-prefixes="jfctn"
�version='1.0'>
<xsl:template match="/">
<xsl:value-of select="//title"/>
<xsl:value-of select="//author"/>
<xsl:value-of select = "jfctn:hello()"/>
</xsl:template>
</xsl:stylesheet>
Here is my transform class
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.*;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import java.net.URL;
import javax.xml.transform.*;
public class SimpleTransform
public SimpleTransform()
public static void main(String args[])
throws TransformerException, TransformerConfigurationException, FileNotFoundException, IOException
TransformerFactory transformerfactory = TransformerFactory.newInstance();
File file = new File("test.xsl");
File file1 = new File("test.xml");
try
URL url = file.toURL();
URL url1 = file1.toURL();
InputStream testXsl = url.openStream();
InputStream testXml = url1.openStream();
Transformer transformer = transformerfactory.newTransformer(new StreamSource(testXsl));
transformer.transform(new StreamSource(testXml), new StreamResult(new FileOutputStream( "test.out")));
System.out.println("************* The result is in test.out *************");
testXsl.close();
testXml.close();
catch(Exception exception)
exception.printStackTrace();
}