Return-Path: Delivered-To: apmail-jakarta-tomcat-user-archive@jakarta.apache.org Received: (qmail 38493 invoked by uid 500); 17 Jul 2001 20:10:46 -0000 Mailing-List: contact tomcat-user-help@jakarta.apache.org; run by ezmlm Precedence: bulk Reply-To: tomcat-user@jakarta.apache.org list-help: list-unsubscribe: list-post: Delivered-To: mailing list tomcat-user@jakarta.apache.org Received: (qmail 38486 invoked from network); 17 Jul 2001 20:10:45 -0000 Received: from salesvision-gw.youcentric.com (HELO yc?exchange.yc?exchange.salesvision.com) (12.19.52.2) by h31.sny.collab.net with SMTP; 17 Jul 2001 20:10:45 -0000 Received: by yc_exchange.yc_exchange.salesvision.com with Internet Mail Service (5.5.2653.19) id <3XZSJXH3>; Tue, 17 Jul 2001 16:06:11 -0400 Message-ID: <15082D39DCA99746A53E37B280DCB10AC04C10@yc_exchange.yc_exchange.salesvision.com> From: Wells Tiedeman To: "'tomcat-user@jakarta.apache.org'" Subject: RE: The 4.0b5 doesn't recognize a servlet class Date: Tue, 17 Jul 2001 16:06:10 -0400 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C10EFB.EC64E560" X-Spam-Rating: h31.sny.collab.net 1.6.2 0/1000/N This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01C10EFB.EC64E560 Content-Type: text/plain; charset="iso-8859-1" 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 MIME-Version: 1.0 Received: from [64.208.42.41] by hotmail.com (3.2) with ESMTP id MHotMailBD1D7FCF00164004376140D02A290F500; Tue, 17 Jul 2001 05:51:28 -0700 Received: (qmail 73852 invoked by uid 500); 17 Jul 2001 12:51:21 -0000 Received: (qmail 73845 invoked from network); 17 Jul 2001 12:51:21 -0000 Received: from salesvision-gw.youcentric.com (HELO yc?exchange.yc?exchange.salesvision.com) (12.19.52.2) by h31.sny.collab.net with SMTP; 17 Jul 2001 12:51:21 -0000 Received: by yc_exchange.yc_exchange.salesvision.com with Internet Mail Service (5.5.2653.19)id <3XZSJV86>; Tue, 17 Jul 2001 08:46:45 -0400 >From tomcat-user-return-41367-vwu0 Tue, 17 Jul 2001 05:52:26 -0700 Mailing-List: contact tomcat-user-help@jakarta.apache.org; run by ezmlm Precedence: bulk list-help: list-unsubscribe: list-post: Delivered-To: mailing list tomcat-user@jakarta.apache.org Message-ID: <15082D39DCA99746A53E37B280DCB10AC04C06@yc_exchange.yc_exchange.salesvision. com> X-Mailer: Internet Mail Service (5.5.2653.19) X-Spam-Rating: h31.sny.collab.net 1.6.2 0/1000/N 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 _____ Get your FREE download of MSN Explorer at http://explorer.msn.com _____ Get your FREE download of MSN Explorer at http://explorer.msn.com ------_=_NextPart_001_01C10EFB.EC64E560 Content-Type: text/html; charset="iso-8859-1"
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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