[Jython-users] error java.lang.ClassCastException: JythonServlet

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dear all,

i'm try jython servlet, i'm using jdk1.3.1_20 and jakarta-tomcat-3.2.3,

# Filename: JythonServlet.py
from javax import servlet
import random # Not used, just here to test module imports

class JythonServlet(servlet.GenericServlet):
    def service(self, req, res):
        res.setContentType("text/html")
        toClient = res.getWriter()
        toClient.println("""<html><body>
                         This is a Servlet of the Jython variety.
                         </body></html>""")

and then :

set TOMCAT_HOME=c:\jakarta-tomcat-3.2.3
set JAVA_HOME=c:\jdk1.3.1

structure my web :

%TOMCAT_HOME%\webapps\
%TOMCAT_HOME%\webapps\jython                    The context's root
%TOMCAT_HOME%\webapps\jython\WEB-INF
%TOMCAT_HOME%\webapps\jython\WEB-INF\classes    Servlet classes
%TOMCAT_HOME%\webapps\jython\WEB-INF\lib        Library archives

compile with : jythonc -w . JythonServlet.py

abd Add jython.jar to the context's lib directory. This is the preferred way.

Making Jython's lib Directory Available to Servlets :
% TOMCAT_HOME%\webapps\jython\ WEB-INF\jylib\ Lib

set TOMCAT_OPTS=-Dpython.home=%TOMCAT_HOME%\webapps\jython\WEB-INF\jylib

and i'm tyr it :

http://localhost:8080/jython/servlet/JythonServlet

but i see error :

Error: 500
Location: /jython/servlet/JythonServlet
Internal Servlet Error:

java.lang.ClassCastException: JythonServlet
	at
org.apache.tomcat.core.ServletWrapper.loadServlet(ServletWrapper.java:268)
	at org.apache.tomcat.core.ServletWrapper.init(ServletWrapper.java:289)
	at org.apache.tomcat.core.Handler.service(Handler.java:254)
	at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
	at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:812)
	at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
	at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:213)
	at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
	at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
	at java.lang.Thread.run(Thread.java:479)

any solution ?

rachmat