XSL transform Tomact

Posted on 2002-04-03
Medium Priority
Last Modified: 2013-11-23
Question by:bqchristie
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LVL 35

Expert Comment

ID: 6916541
 What is the question?

Author Comment

ID: 6916571
I have a Jsp custom tag (code below).  When the tag is called i get an error saying that the class:
 javax.xml.transform.Source cannot be found.

in the WEB-APPS/myapp/WEB-INF/lib directory i have xalan.jar xml-apis.jar xerces.jar and xercesImpl.jar

what else is it looking for?  could there be a conflict? am i missing something?

import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import java.io.*;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
import org.jdom.output.DOMOutputter;
import org.jdom.transform.JDOMSource;
import org.w3c.dom.Document;
import java.io.File;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import org.jdom.transform.JDOMSource;
import org.jdom.transform.JDOMResult;
import javax.xml.transform.dom.DOMSource;
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;
import java.io.*;
import java.util.*;
import com.dceg.actions.*;
import com.dceg.utils.*;
import java.sql.*;

public class RenderTable extends TagSupport{
  private NavigableList list = null;
  public int doStartTag() {
    try {
      NavigableList list = (NavigableList)pageContext.getSession().getAttribute(Constants.GAME_LIST);
      try {
        DOMOutputter outputter = new DOMOutputter();
        Document domXML = outputter.output(list.getXml());
        Source xmlSource = new DOMSource(domXML);
        Document domXSL = outputter.output(list.getXsl());
        Source xslSource = new DOMSource(domXSL);
        StreamResult xmlResult = new StreamResult(pageContext.getOut());
        TransformerFactory tFactory = TransformerFactory.newInstance();
        Transformer transformer = tFactory.newTransformer(xslSource);
        transformer.transform(xmlSource, xmlResult);
      }catch(Exception e){
    } catch(Exception e) {

    return (TagSupport.EVAL_PAGE);
  public static void main(String[] args) {
LVL 35

Accepted Solution

girionis earned 600 total points
ID: 6916596
 If it can find the rest fo the classes in the package (e.g. javax.xml.transform.Result) and not the Source class this means that you might be using an older version of the jar file. If it cannot find all of the specific classes in the package then this means that it cannot find the jar file. I would suggest you extract all the jar file's content's under the WEB-INF/lib folder or specify the path to explicitly look at each jar file.

  Hope it helps.
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Author Comment

ID: 6916651
I tried that with no luck.  I am pretty stumped. Thanks
for trying.

Author Comment

ID: 6916682
i unjarred the xml-apis.jar in the common/classes folder and now get a differenet error.  

javax.servlet.ServletException: Provider for javax.xml.transform.TransformerFactory cannot be found
LVL 35

Expert Comment

ID: 6916740
 It is probably a classpath problem but it is difficult to say without seeing your whole environment. Try to put manually all the jar file and class subdirectories into your classpath and try again... Apart from this I do not know what else I could think of...

Expert Comment

ID: 6920106
I think it is not able to pick up ur Jars
pls set the classpath before starting tomcat
u should have all ur jars in the classpath
i think this will solve the problem

Author Comment

ID: 6920773
Thanks for the comment.  As it turns out I just grabbed the latest JAXP jars from javasoft and everything worked fine.  I am still a bit stumped though because everything was running fine under Tomcat 4.0.1.
LVL 35

Expert Comment

ID: 6921757
 I guess every new release of a web server/Sevrlet engine has a bit different way to deal with loading the appropriate classes.

Expert Comment

ID: 6932314
I have this problem, i solve it installing an replacing that .jar files for JAXP .jar files.
This jar files must be in the CLASSPATH
You can download JAXP from sun site.

Author Comment

ID: 6932345
Seems that updating with a newer version of the jar files did the trick.  

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