Hi 
  I put together a servlet that reads a .xml file and a .xsl file , applies
the transformation and writes the PDF output to the response object. The
servlet works fine in the Tomcat test environment in  Jbuilder4.0. It fails
when I run it in the standalone Tomcat 3.2.1 instance. I compared the
classpaths in both environments and found them to be the same for my
application. Can somebody please help ?

thanks
Srinivas

Here are the outputs and listing of the source -


+++++++++++++ output from Tomcat standalone ++++++++++++++++++++++++++++++
Set the system property..
loaded the class ...
[ERROR]: Logger not set
org.apache.fop.apps.FOPException
        at
org.apache.fop.apps.XSLTInputHandler.getParser(XSLTInputHandler.java:109)
        at ConvertXmlServlet.service(ConvertXmlServlet.java:52)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
        at org.apache.tomcat.core.Handler.service(Handler.java:286)
        at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
        at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
7)
        at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
        at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
onnectionHandler.java:210)
        at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
        at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
        at java.lang.Thread.run(Thread.java:484)

---------

java.lang.reflect.InvocationTargetException:
javax.xml.transform.TransformerFactoryConfigurationError: Provider
org.apache.xalan.p
 found
        at javax.xml.transform.TransformerFactory.newInstance(Unknown
Source)
        at
org.apache.fop.apps.TraxInputHandler.getXMLFilter(TraxInputHandler.java:72)
        at java.lang.reflect.Method.invoke(Native Method)
        at
org.apache.fop.apps.XSLTInputHandler.getParser(XSLTInputHandler.java:102)
        at ConvertXmlServlet.service(ConvertXmlServlet.java:52)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
        at org.apache.tomcat.core.Handler.service(Handler.java:286)
        at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
        at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
7)
        at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
        at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
onnectionHandler.java:210)
        at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
        at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
        at java.lang.Thread.run(Thread.java:484)

---------

javax.xml.transform.TransformerFactoryConfigurationError: Provider
org.apache.xalan.processor.TransformerFactoryImpl not found
        at javax.xml.transform.TransformerFactory.newInstance(Unknown
Source)
        at
org.apache.fop.apps.TraxInputHandler.getXMLFilter(TraxInputHandler.java:72)
        at java.lang.reflect.Method.invoke(Native Method)
        at
org.apache.fop.apps.XSLTInputHandler.getParser(XSLTInputHandler.java:102)
        at ConvertXmlServlet.service(ConvertXmlServlet.java:52)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
        at org.apache.tomcat.core.Handler.service(Handler.java:286)
        at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
        at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:79
7)
        at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
        at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpC
onnectionHandler.java:210)
        at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
        at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
        at java.lang.Thread.run(Thread.java:484)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++


+++++++++Servlet listing
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import org.w3c.dom.Document;
import org.xml.sax.*;
import org.apache.xalan.xslt.*;
import org.apache.fop.apps.*;
import org.apache.xalan.processor.TransformerFactoryImpl;

public class ConvertXmlServlet extends HttpServlet
  {
    private static final String CONTENT_TYPE = "application/pdf";
    /**Initialize global variables*/
    public void init(ServletConfig config) throws ServletException
      {
        super.init(config);
      }
    /**Process the HTTP Post request*/
    public void service(HttpServletRequest request, HttpServletResponse
response) throws ServletException, IOException
      {

        try
          {
 
System.setProperty("javax.xml.transform.TransformerFactory","org.apache.xala
n.processor.TransformerFactoryImpl");
            System.out.println("Set the system property..");
        
            //this piece of code has been put in to debug.
Since"org.apache.xalan.processor.TransformerFactoryImpl" 
            //is being loaded it is avialable in classpath.
 
Class.forName("org.apache.xalan.processor.TransformerFactoryImpl");
            System.out.println("loaded the class ...");
            Driver driver = new Driver();
            driver.setRenderer(Driver.RENDER_PDF);
            InputHandler inputHandler = new XSLTInputHandler(new
File("etac.xml"),new File("etacNested.xsl"));
            XMLReader parser = inputHandler.getParser();
            response.setContentType(CONTENT_TYPE);
            driver.setOutputStream(response.getOutputStream());
            driver.render(parser, inputHandler.getInputSource());
        System.out.println("Generated pdf successfully ... ");
          }catch(Exception e)
            {
              e.printStackTrace();
            }
      }

    /**Clean up resources*/
    public void destroy()
      {
      }
  }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++

Setting home to C:\WorkArea\xmlToPdf
Starting tomcat. Check logs/tomcat.log for error messages  Context log:
path="" Adding context path=""  docBase="C:\WorkArea\xmlToPdf\"
Starting tomcat install="C:\WorkArea\xmlToPdf" home="C:\WorkArea\xmlToPdf"
classPath="C:\Apps\Inprise\JBuilder4\tomcat\lib\webserver.jar;C:\Apps\Inpris
e\JBuilder4\tomcat\lib\jasper.jar;C:\Apps\Inprise\JBuilder4\tomcat\lib\xml.j
ar;C:\Apps\Inprise\JBuilder4\lib\servlet.jar;C:\Apps\Inprise\JBuilder4\lib\w
ebserverglue.jar;C:\WorkArea\xmlToPdf\web-inf\classes;C:\Apps\Inprise\JBuild
er4\lib\servlet.jar;C:\Apps\Apache
Group\Fop-0.20.3rc\build\fop.jar;C:\Apps\Apache
Group\Fop-0.20.3rc\lib\avalon-framework-4.0.jar;C:\Apps\Apache
Group\Fop-0.20.3rc\lib\logkit-1.0b4.jar;C:\Apps\Apache
Group\Fop-0.20.3rc\lib\batik.jar;C:\Apps\Apache
Group\xalan-j_2_3_0\bin\xalan.jar;C:\Apps\Apache
Group\xalan-j_2_3_0\bin\xml-apis.jar;C:\Apps\Apache
Group\xerces-1_4_0\xerces.jar;C:\Apps\Inprise\JBuilder4\jdk1.3\demo\jfc\Java
2D\Java2Demo.jar;C:\Apps\Inprise\JBuilder4\jdk1.3\jre\lib\i18n.jar;C:\Apps\I
nprise\JBuilder4\jdk1.3\jre\lib\jaws.jar;C:\Apps\Inprise\JBuilder4\jdk1.3\jr
e\lib\rt.jar;C:\Apps\Inprise\JBuilder4\jdk1.3\jre\lib\sunrsasign.jar;C:\Apps
\Inprise\JBuilder4\jdk1.3\lib\dt.jar;C:\Apps\Inprise\JBuilder4\jdk1.3\lib\to
ols.jar"
JSP Servlet Started  JSP Servlet Started (Echo) Context log path=""
:tomcat.errorPage: init
Context log path="" :jsp: init
<JASPER_LOG> Wed Feb 20 16:07:07 PST 2002 Scratch dir for the JSP engine is:
C:\WorkArea\xmlToPdf\work\localhost_8080</JASPER_LOG>  <JASPER_LOG> Wed Feb
20 16:07:07 PST 2002 IMPORTANT: Do not modify the generated
servlets</JASPER_LOG>  Context log path="" :default: init
Context log: path="" File not found
C:\WorkArea\xmlToPdf\conf\tomcat-users.xml
Starting endpoint port="8086"
handler="org.apache.tomcat.service.http.HttpConnectionHandler" 
Starting endpoint port="8087"
handler="org.apache.tomcat.service.connector.Ajp12ConnectionHandler" 
HTTP:GET /ConvertXmlServlet.shtml  Feb 20, 2002 4:07:08 PM Context log
path="" :shtml: init
Context log path="" :invoker: init
Set the system property.. loaded the class ... Context log path=""
:ConvertXmlServlet: init
[ERROR]: Logger not set
[INFO]: building formatting object tree
[WARN]: property - "margin" is not implemented yet.
[INFO]: [1]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: [2]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: [3]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: Parsing of document complete, stopping renderer
Set the system property.. loaded the class ... [ERROR]: Logger not set
[INFO]: building formatting object tree
[WARN]: property - "margin" is not implemented yet.
[INFO]: [1]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: [2]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: [3]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: Parsing of document complete, stopping renderer
Set the system property.. loaded the class ... [ERROR]: Logger not set
[INFO]: building formatting object tree
[WARN]: property - "margin" is not implemented yet.
[INFO]: [1]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: [2]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: [3]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: Parsing of document complete, stopping renderer
Set the system property.. loaded the class ... [ERROR]: Logger not set
[INFO]: building formatting object tree
[WARN]: property - "margin" is not implemented yet.
[INFO]: [1]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[ERROR]: Unknown enumerated value for property 'border-top-style': thin
[ERROR]: Unknown enumerated value for property 'border-bottom-style': thin
[ERROR]: Unknown enumerated value for property 'border-left-style': thin
[ERROR]: Unknown enumerated value for property 'border-right-style': thin
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: [2]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: [3]
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[WARN]: table-layout=auto is not supported, using fixed!
[INFO]: Parsing of document complete, stopping renderer
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++

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