----- Original Message -----
From: "Christopher Schultz" <[EMAIL PROTECTED]>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Thursday, August 07, 2008 7:45 PM
Subject: Sudden missing javax/servlet/http/HttpServlet ?
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All,
I've checked everything I can think of. Today, my dev instance of Tomcat
started acting funny, saying:
java.lang.NoClassDefFoundError: javax/servlet/http/HttpServlet
~ at java.lang.ClassLoader.defineClass1(Native Method)
~ at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
~ at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
(ultimately coming from)
~ at
org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
~ at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
I've checked the obvious things:
1. Only one copy of servlet-api.jar anywhere (it's in
TOMCAT_HOME/common/lib and has md5 hash of
043724d8aadd4e5c50417dfcef52934b)
2. All configuration files appear to be sane (using copies available in
our cvs repo and verified working by a colleague)
3. No CLASSPATH set anywhere (and adding an echo in catalina.sh confirms
this)
I've rebooted, just in case my system went braindead (it's Linux: it
hadn't, and the error persists).
I've re-installed Tomcat (5.5.26, since you asked), but the installation
directory had no differences after the install than before the install
except for the presence of mysql-connector-whatever.jar.
I deleted my own webapp from the deployment directory and dropped
LambdaProbe's probe.war into my webapps directory, just to check, and
that application seems to deploy with no complaints.
Here is the list of files in my webapp's WEB-INF/lib directory:
antlr-2.7.3-runtime.jar expreval-1.0a.jar
chadis-tools-1.1.jar jakarta-oro-2.0.8.jar
commons-beanutils-1.7.0.jar jmock-1.0.1.jar
commons-chain-1.1.jar junit-3.8.1.jar
commons-collections-3.2.jar log4j-1.2.15.jar
commons-digester-1.8.jar ppg.jar
commons-lang-2.2.jar securityfilter-2.0+.jar
commons-logging-1.1.1.jar struts-core-1.3.8.jar
commons-validator-1.3.1.jar struts-taglib-1.3.8.jar
dxengine-1.0b.jar velocity-1.4.jar
engine-1.0a.jar velocity-tools-1.4.jar
Those you might not recognize are in-house libraries. But, you can see,
there's no servlet-api.jar or anything like that.
The server.xml file I'm using works file with LambdaProbe, so there is
not likely to be an error in there.
I'm totally confused. This install has been working literally for years,
and today it decided to crap out.
Does anyone have any suggestions for what to check? It's obviously my
own application, but I can't see anything that might be problematic.
Thanks,
- -chris
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Chris, your webapps probably still work out side the dev environment....
I "think" all thats happening is your IDE is not loading the commons lib...
Those are wierd libs in a way.... your IDE loads them up so that you can
develop and make the application... compile etc... but then those libs are
not put into the final webapp... ie they special, the IDE uses them so you
can work, but does not pack them... coz TC has them already.
So... I think it just your IDE that doesnt know how to load them anymore...
In NB... the way TC 6 and TC 5.5 works is totally different... ie if the IDE
was set for TC 6 and was pointed at TC 5.5... it would do something like
this as well.
Maybe just something silly like the IDE thinks its TC 6, but its TC 5.5 and
its using it wrong...
My guess... good luck
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