On Tue, 2 Oct 2001, James Turner wrote:
> Date: Tue, 2 Oct 2001 17:52:59 -0400
> From: James Turner <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]
> Subject: Where to put ServletContextListener?
>
> I'm trying to use a ServletContextListener to initialize Turbine
> standalone for my application. Here's the class:
>
> package com.bfg.services;
> import org.apache.turbine.util.TurbineConfig;
>
> public class BfgListener implements javax.servlet.ServletContextListener
> {
> public void contextDestroyed(javax.servlet.ServletContextEvent sce)
> {
> }
>
> public void contextInitialized(javax.servlet.ServletContextEvent
> sce) {
> TurbineConfig tc = new
> TurbineConfig("/","TurbineResources.properties");
> tc.init();
>
> }
> }
>
Because ServletContextListener is a standard part of the Servlet API, your
corresponding class goes inside your webapp (in /WEB-INF/classes or
/WEB-INF/lib), just like servlets and bean classes do.
You declare your listener in the /WEB-INF/web.xml file, like this:
<listener>
<listener-class>com.bfg.services.BfgListener</listener-class>
</listener>
The "examples" web app that comes with Tomcat 4 declares several listeners
in exactly this way -- take a look at the web.xml file there to get the
idea.
> Here's the server.xml excerpt:
> <Context path="/bfg" docBase="bfg" debug="0"
> reloadable="true">
> <Listener className="com.bfg.services.BfgListener">
>
> I've tried putting the class in the jar with the rest of the bfg
> classes, in a jar in the tomcat lib directory, in the tomcat classes
> directory, in the webapp lib and classes directory, and I still get the
> same error on startup:
>
> Catalina.start: java.lang.ClassNotFoundException:
> com.bfg.services.BfgListener
> java.lang.ClassNotFoundException: com.bfg.services.BfgListener
>
This is for internal-to-Tomcat listeners that operate "inside" the
container, rather than as part of your application. You don't need to
worry about this at all.
> Where does it need to live? I've seen the question asked on this list,
> but not the answer.
>
Listeners (and Filters, if you use them) go in your web app, just like
other application classes, and they are configured in /WEB-INF/web.xml.
> James
>
>
Craig McClanahan
