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Struts & Hibernate
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| | | 4.1.27: Manager app 'reload ' causing ClassNotFoundException | 4.1.27: Manager app 'reload ' causing ClassNotFoundException 2003-10-10 - By Justin Ruthenbeck
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Hello All:
Tomcat 4.1.27
JDK 1.4.1_02
OS: Windows 2k
I've thoroughly read:
http://jakarta.apache.org/tomcat/tomcat-4 (See http://cat-4.ora-code.com).1-doc/manager-howto.html
http://jakarta.apache.org/tomcat/tomcat-4 (See http://cat-4.ora-code.com).1-doc/class-loader-howto.html
This list for the past 16 months :)
Problem: My (simple demonstration) webapp runs fine if Tomcat is started
from scratch. If I use the Manager app from either the html or ant
interfaces, executing the 'reload' command completes without error, yet all
servlets are unavailable afterwards. Hitting a servlet results in the
following being logged:
2003-10-10 12:05:06 HTMLManager: restart: Reloading web application at '/news'
2003-10-10 12:05:06 StandardContext[/news]: Reloading this Context has started
2003-10-10 12:05:06 StandardWrapper[/news:default]: Loading container
servlet default
2003-10-10 12:05:06 StandardWrapper[/news:invoker]: Loading container
servlet invoker
2003-10-10 12:05:06 StandardManager[/news]: Seeding random number generator
class java.security.SecureRandom 
2003-10-10 12:05:06 StandardManager[/news]: Seeding of random number
generator has been completed
2003-10-10 12:05:06 StandardContext[/news]: Reloading this Context is completed
2003-10-10 12:05:12
StandardWrapper[/news:com.nextengine.news.servlet.CalculatorServlet]:
Marking servlet com.nextengine.news.servlet.CalculatorServlet as unavailable
2003-10-10 12:05:12
StandardWrapperValve[com.nextengine.news.servlet.CalculatorServlet]:
Allocate exception for servlet com.nextengine.news.servlet.CalculatorServlet
javax.servlet.ServletException : Wrapper cannot find servlet class
com.nextengine.news.servlet.CalculatorServlet or a class it depends on
at
org.apache.catalina.core.StandardWrapper (StandardWrapper.java:891)
at org.apache.catalina.core.StandardWrapper (StandardWrapper.java:668)
at
org.apache.catalina.core.StandardWrapperValve (StandardWrapperValve.java
:210)
at
<snip>
org.apache.coyote.http11.Http11Processor (Http11Processor.java:601)
at
org.apache.coyote.http11.Http11Protocol $Http11ConnectionHandler
.processConnection(Http11Protocol.java:392)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at
org.apache.tomcat.util.threads.ThreadPool $ControlRunnable.run(ThreadPool.java
:619)
at java.lang.Thread (Thread.java:536)
-- -- Root Cause -- --
java.lang.ClassNotFoundException : com.nextengine.news.servlet.CalculatorServlet
at
org.apache.catalina.loader.WebappClassLoader (WebappClassLoader.java
:1444)
at
org.apache.catalina.loader.WebappClassLoader (WebappClassLoader.java
:1289)
CalculatorServlet.class exists only under the directory:
$TOMCAT_HOME/webapps/news/WEB-INF/classes/com/nextengine/news/servlet
The only modifications made to the default installation is the appropriate
additions to tomcat-users.xml. No changes were made to server.xml. Since
thousands of people use this, I'm assuming there's something simple going
on here. Restarting the Tomcat process results in all resources being
available once again.
Hoping another pair of eyes can see what's wrong...
Thanks,
justin
__ ____ ____ ____ ____ ____ ____ ___
Justin Ruthenbeck
Software Engineer, NextEngine Inc.
justinr - AT - nextengine DOT com
Confidential
See http://www.nextengine.com/confidentiality.php
__ ____ ____ ____ ____ ____ ____ ___
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