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Posted to users@tomcat.apache.org by Wells Tiedeman <JW...@youcentric.com> on 2001/07/17 22:06:10 UTC
RE: The 4.0b5 doesn't recognize a servlet class
Any of the jars/classes containing the packages java.*, com.sun.*, javax.*,
etc. If any of these are included in your /WEB-INF/lib directory the class
loaders get confused.
-Wells
-----Original Message-----
From: Vernon Wu [mailto:vwu0@hotmail.com]
Sent: Tuesday, July 17, 2001 3:49 PM
To: tomcat-user@jakarta.apache.org
Subject: The 4.0b5 doesn't recognize a servlet class
Hi, Wells,
Thanks for your response.
It took me awhile trying to figure how the CLASSPATH relates with the
problem. I build up the JSP application using Tomcat 3.x with the standard
procedure. Nothing inside the project is set up in the CLASSPATH. I don't
know what you means by "all j2ee platform classes". Are the classes used
j2ee APIs?
Thx.
Vernon
----Original Message Follows----
From: Wells Tiedeman
Reply-To: tomcat-user@jakarta.apache.org
To: "'tomcat-user@jakarta.apache.org'"
Subject: RE: ServletException in 4.0b5
Date: Tue, 17 Jul 2001 08:46:44 -0400
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I experienced the same problem. It's due to a class loader issue. Multiple
class loaders have been introduced in V4.0 to implement the requirements
found in Section 9.6.2 of the Servlet 2.3 Spec. These class loaders are
used to load all of the jars and classes rather than using the CLASSPATH.
I was able to resolve this problem as follows :
- Add all supporting jars for your web application (except J2EE jars) to
the /WEB-INF/lib directory rather than including them in the CLASSPATH
- Add all of the required classes for your web application to the
/WEB-INF/classes directory rather than including them in the CLASSPATH
- Add the j2ee.jar from the /j2sdkee1.3/lib directory to the
TOMCAT_HOME/common/lib directory. All J2EE platform classes must be placed
in the common/lib or common/classes directories rather than with the web
application.
-Wells
Wells Tiedeman
YOUcentric, Inc.
P: 704.401.1109
F: 704.401.1240
jwtiedeman@youcentric.com
For more information on YOUcentric, please visit our web site at
www.youcentric.com
-----Original Message-----
From: Vernon Wu [mailto:vwu0@hotmail.com]
Sent: Monday, July 16, 2001 7:53 PM
To: tomcat-user@jakarta.apache.org
Subject: ServletException in 4.0b5
I move one our small JSP application from 3.x to 4.0b5 for the reason of
using servlet 2.3 specification: ServletContextListener, HttpSessionListener
be more specific.
I get the exception under the 4.0b5 with the following messages:
Exception Report:
javax.servlet.ServletException: Class abc.control.ControllerServlet is not a
Servlet
....
Root Cause:
java.lang.ClassCastException: abc.control.ControllerServlet
...
There is not any indication that anywhere my code is not approprt. What I
shall do at this situation?
I believe that I encounter the similar situation in the 3.x, and it can be
resolved by recycle the Tomcat server. That method doesn't work for 4.0b5.
Thanks.
Vernon
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