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From Mark Thomas <ma...@apache.org>
Subject Re: Tomcat errors
Date Wed, 17 Dec 2008 13:53:48 GMT
dalilama wrote:
> I'm trying to get to know tomcat 6. I am experimenting with editing one of
> the java classes in apache-tomcat-6.0.18/webapps/examples/WEB-INF/classes
> 
> I have replaced the contents of HelloWorldExample.java with my own code
> which server a web page . One of the lines of code is:
> public void doGet(HttpServletRequest req, HttpServletResponse res) 
> 
> The code compiles fine and runs fine.
> Now I want to add some code which might throw an exception so I modify the
> above line to read :
> public void doGet(HttpServletRequest req, HttpServletResponse res) throws
> IOException, ServletException
> 
> The file again compiles without problem. But now when I start the tomcat
> instance I see the following errors in the logs : 
> 
> Dec 17, 2008 1:23:02 PM org.apache.catalina.core.StandardContext
> listenerStart
> SEVERE: Error configuring application listener of class
> listeners.ContextListener
> java.lang.NoClassDefFoundError:
> javax/servlet/ServletContextAttributeListener
>         at java.lang.ClassLoader.defineClass1(Native Method)
>         at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
> 
> The "javax/servlet/ServletContextAttributeListener" is definately there and
> the location is included in the environmental variable "CLASSPATH"
> 
> Now the tomcat server is totally disfunctional and gives me HTTP STatus 404
> when I do to the servlet demo page.

That is a question for the users list, not the dev list.

Mark

> 
> 
> George


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