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Posted to users@tomcat.apache.org by Aditya Anand <ad...@yahoo.com> on 2001/07/18 21:10:16 UTC
RE: The 4.0b5 doesn't recognize a servlet class
hmm... did you recompile the classes using the tomcat
lib jars?
--- Vernon Wu <vw...@hotmail.com> wrote:
<HR>
<html><DIV>
<P>Hi, </P>
<P> </P>
<P>As you suggested, I moved the j2ee.jar from the
web-inf\lib to common\lib. And then I restarted the
Tomcat 4.0b5. Here is what I got:</P>
<P>Catalina.start: LifecycleException: start:
:
java.lang.NoSuchMethodError<BR>LifecycleException:
start: :
java.lang.NoSuchMethodError<BR>
at
org.apache.catalina.loader.StandardLoader.start(StandardLoader.java:6<BR>49)<BR>
at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1100)</P>
<P> at
org.apache.catalina.core.StandardContext.start(StandardContext.java:3<BR>189)<BR>
at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1123)</P>
<P> at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1123)</P>
<P> at
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:278<BR>)<BR>
at
org.apache.catalina.core.StandardService.start(StandardService.java:3<BR>53)<BR>
at
org.apache.catalina.core.StandardServer.start(StandardServer.java:458<BR>)<BR>
at
org.apache.catalina.startup.Catalina.start(Catalina.java:725)<BR>
at
org.apache.catalina.startup.Catalina.execute(Catalina.java:647)<BR>
at
org.apache.catalina.startup.Catalina.process(Catalina.java:177)<BR>
at java.lang.reflect.Method.invoke(Native
Method)<BR>
at
org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:196)<BR>-----
Root Cause
-----<BR>java.lang.NoSuchMethodError<BR>
at
org.apache.catalina.loader.StandardLoader.start(StandardLoader.java:6<BR>27)<BR>
at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1100)</P>
<P> at
org.apache.catalina.core.StandardContext.start(StandardContext.java:3<BR>189)<BR>
at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1123)</P>
<P> at
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1123)</P>
<P> at
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:278<BR>)<BR>
at
org.apache.catalina.core.StandardService.start(StandardService.java:3<BR>53)<BR>
at
org.apache.catalina.core.StandardServer.start(StandardServer.java:458<BR>)<BR>
at
org.apache.catalina.startup.Catalina.start(Catalina.java:725)<BR>
at
org.apache.catalina.startup.Catalina.execute(Catalina.java:647)<BR>
at
org.apache.catalina.startup.Catalina.process(Catalina.java:177)<BR>
at java.lang.reflect.Method.invoke(Native
Method)<BR>
at
org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:196)</P>
<P> </P>
<P>If I don't relocate the j2ee.jar file, when I try
to open up the main page which doesn't call any
servlet instance. What I get is the followings:</P>
<H3>Exception
Report:</H3><PRE>javax.servlet.ServletException: Class
org.apache.jasper.servlet.JspServlet is not a
Servlet</PRE><PRE>...</PRE><PRE><H3>Root
Cause:</H3><PRE>java.lang.ClassCastException:
org.apache.jasper.servlet.JspServlet</PRE><PRE>...<BR></PRE><PRE>Please
advise what steps I shall
take</PRE><PRE> </PRE><PRE>Thanks.<BR></PRE></PRE></DIV>
<DIV></DIV>
<DIV></DIV>----Original Message Follows----
<DIV></DIV>From: Wells Tiedeman
<JW...@YOUCENTRIC.COM>
<DIV></DIV>Reply-To: tomcat-user@jakarta.apache.org
<DIV></DIV>To: "'tomcat-user@jakarta.apache.org'"
<TO...@JAKARTA.APACHE.ORG>
<DIV></DIV>Subject: RE: The 4.0b5 doesn't recognize a
servlet class
<DIV></DIV>Date: Tue, 17 Jul 2001 16:06:10 -0400
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<DIV></DIV>Any of the jars/classes containing the
packages java.*, com.sun.*, javax.*,
<DIV></DIV>etc. If any of these are included in your
/WEB-INF/lib directory the class
<DIV></DIV>loaders get confused.
<DIV></DIV>
<DIV></DIV>-Wells
<DIV></DIV>
<DIV></DIV>-----Original Message-----
<DIV></DIV>From: Vernon Wu [mailto:vwu0@hotmail.com]
<DIV></DIV>Sent: Tuesday, July 17, 2001 3:49 PM
<DIV></DIV>To: tomcat-user@jakarta.apache.org
<DIV></DIV>Subject: The 4.0b5 doesn't recognize a
servlet class
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>Hi, Wells,
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>Thanks for your response.
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>It took me awhile trying to figure how the
CLASSPATH relates with the
<DIV></DIV>problem. I build up the JSP application
using Tomcat 3.x with the standard
<DIV></DIV>procedure. Nothing inside the project is
set up in the CLASSPATH. I don't
<DIV></DIV>know what you means by "all j2ee platform
classes". Are the classes used
<DIV></DIV>j2ee APIs?
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>Thx.
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>Vernon
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>----Original Message Follows----
<DIV></DIV>From: Wells Tiedeman
<DIV></DIV>Reply-To: tomcat-user@jakarta.apache.org
<DIV></DIV>To: "'tomcat-user@jakarta.apache.org'"
<DIV></DIV>Subject: RE: ServletException in 4.0b5
<DIV></DIV>Date: Tue, 17 Jul 2001 08:46:44 -0400
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<DIV></DIV>I experienced the same problem. It's due to
a class loader issue. Multiple
<DIV></DIV>class loaders have been introduced in V4.0
to implement the requirements
<DIV></DIV>found in Section 9.6.2 of the Servlet 2.3
Spec. These class loaders are
<DIV></DIV>used to load all of the jars and classes
rather than using the CLASSPATH.
<DIV></DIV>I was able to resolve this problem as
follows :
<DIV></DIV>- Add all supporting jars for your web
application (except J2EE jars) to
<DIV></DIV>the /WEB-INF/lib directory rather than
including them in the CLASSPATH
<DIV></DIV>- Add all of the required classes for your
web application to the
<DIV></DIV>/WEB-INF/classes directory rather than
including them in the CLASSPATH
<DIV></DIV>- Add the j2ee.jar from the /j2sdkee1.3/lib
directory to the
<DIV></DIV>TOMCAT_HOME/common/lib directory. All J2EE
platform classes must be placed
<DIV></DIV>in the common/lib or common/classes
directories rather than with the web
<DIV></DIV>application.
<DIV></DIV>-Wells
<DIV></DIV>Wells Tiedeman
<DIV></DIV>YOUcentric, Inc.
<DIV></DIV>P: 704.401.1109
<DIV></DIV>F: 704.401.1240
<DIV></DIV>jwtiedeman@youcentric.com
<DIV></DIV>For more information on YOUcentric, please
visit our web site at
<DIV></DIV>www.youcentric.com
<DIV></DIV>-----Original Message-----
<DIV></DIV>From: Vernon Wu [mailto:vwu0@hotmail.com]
<DIV></DIV>Sent: Monday, July 16, 2001 7:53 PM
<DIV></DIV>To: tomcat-user@jakarta.apache.org
<DIV></DIV>Subject: ServletException in 4.0b5
<DIV></DIV>I move one our small JSP application from
3.x to 4.0b5 for the reason of
<DIV></DIV>using servlet 2.3 specification:
ServletContextListener, HttpSessionListener
<DIV></DIV>
<DIV></DIV>be more specific.
<DIV></DIV>I get the exception under the 4.0b5 with
the following messages:
<DIV></DIV>Exception Report:
<DIV></DIV>javax.servlet.ServletException: Class
abc.control.ControllerServlet is not a
<DIV></DIV>
<DIV></DIV>Servlet
<DIV></DIV>....
<DIV></DIV>Root Cause:
<DIV></DIV>java.lang.ClassCastException:
abc.control.ControllerServlet
<DIV></DIV>...
<DIV></DIV>There is not any indication that anywhere
my code is not approprt. What I
<DIV></DIV>shall do at this situation?
<DIV></DIV>I believe that I encounter the similar
situation in the 3.x, and it can be
<DIV></DIV>resolved by recycle the Tomcat server. That
method doesn't work for 4.0b5.
<DIV></DIV>Thanks.
<DIV></DIV>Vernon
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