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From: "Darren Hall" <dhall@utrs.com>
To: "'Tomcat Users List'" <users@tomcat.apache.org>
Subject: RE: (newb) Tomcat servlet mapping problem
Date: Mon, 23 Jan 2006 14:46:01 -0500
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> On 1/23/06, Darren Hall <dhall@utrs.com> wrote:
> > > > From: Darren Hall [mailto:dhall@utrs.com]
> > > > Subject: RE: (newb) Tomcat servlet mapping problem
> > > >
> > > > Is there a way I can map these servlets (in the web.xml file) so
> > > > that Tomcat can see them and execute them?
> > >
>=20
> As far as I can see, it just works. Whether it's correct or not, it
> does seem work in Tomcat 5.5.12 and I know it worked in 5.0.28 too. So
> this is probably not the cause of your problem. Try putting one
> servlet in a package to see if that makes a difference, before you try
> to change them all.
>=20
> Here's a servlet declaration that I just tested:
> <servlet>
>   <servlet-name>Test</servlet-name>
>   <servlet-class>Test</servlet-class>
> </servlet>
> <servlet-mapping>
>   <servlet-name>Test</servlet-name>
>   <url-pattern>/test</url-pattern>
> </servlet-mapping>
>=20
> --
> Len

ok, the start of this thread got lost... let me try and do a brief
refresher...

I'm working with Tomcat 5.0, Apache 2, and a whole bunch of servlets =
that I
inherited. The website is a combination of static HTML and java. 95% of =
the
java code is implemented in servlets (that write out the dynamic HTML) =
and
NONE of the Java code is in packages.

The HTML on the site, when referring to servlets, uses relative paths =
like
<form action=3D"../servlet/<servlet-name>". In order to remove the =
invoker
servlet, I need to map all the servlets on the site through a web.xml =
file.

Initially, I was getting a "resource unavailable" error from Tomcat, but =
it
now appears as if my servlet mapping was wrong. (my app lived in the
${catalina.home}/webapp/servlet directory, and my web.xml was mapping a
servlet to <url-mapping>/servlet/[servlet-name]</url-mapping>.

I fixed this by removing the '/servlet' in the <url-mapping> tag, and I =
now
get a stack trace with a "ClassDefNotFound" [servlet-name] error. This =
error
occurs when I point at Tomcat directly, so I know the error has nothing =
to
do with Apache. I now have a stripped down web.xml file that looks like =
this
(minus the xml and DOCTYPE directives):
...
<web-app>
  <servlet>
    <servlet-name>FLCUpEvDisplayServlet</servlet-name>
    <servlet-class>FLCUpEvDisplayServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>FLCUpEvDisplayServlet</servlet-name>
    <url-pattern>/FLCUpEvDisplayServlet</url-pattern>
  </servlet-mapping>
</web-app>

Now everytime I hit the servlet, I get the "ClassDefNotFound" error, and
after that I see an entry in the log file:

2006-01-23 11:35:53 StandardContext[/servlet]Marking servlet
FLCUpEvDisplayServlet as unavailable
2006-01-23 11:35:53 StandardContext[/servlet]Error loading =
WebappClassLoader
  delegate: false
  repositories:
    /WEB-INF/classes/

after which I get a "resource is not available" error again, until I =
stop
and restart Tomcat.

So, my question is... why am I getting the "ClassDefNotFound" error, and =
how
do I correct it (or can I, given my current configuration)?

Thanks

Darren



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