java.lang.NoClassDefFoundError: javax/servlet/ServletContextListener

[Vasiliy Keretsman]

Hi!

I've got the following problem during Tomcat 5.5.20 startup

- Error configuring application listener of class
myapp.util.WebApplicationContextSupport
java.lang.NoClassDefFoundError: javax/servlet/ServletContextListener

servlet-api.jar is in common/lib.


I've never had such problem with Tomcat 5.0.28.

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[Caldarale, Charles R]

Post by Vasiliy Keretsman
javax/servlet/ServletContextListener
- Error configuring application listener of class
myapp.util.WebApplicationContextSupport
java.lang.NoClassDefFoundError: javax/servlet/ServletContextListener
servlet-api.jar is in common/lib.

Is the jar perchance in some other directory as well - such as inside
the webapp? It shouldn't be in more than one place.

- Chuck


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[Martin Gainty]

Vasily-
Can we see the web.xml listener element configuration for ServletContextListener and any listener's deriving from ServletContextListener
have you verified your $CATALINA_HOME/commons/lib/servlet-api.jar is the same as the OS specific distro jar?

Anyone else?
M-
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----- Original Message -----
From: "Vasiliy Keretsman" <***@gmail.com>
To: <***@tomcat.apache.org>
Sent: Wednesday, November 08, 2006 9:56 AM
Subject: java.lang.NoClassDefFoundError: javax/servlet/ServletContextListener

Post by Vasiliy Keretsman
Hi!
I've got the following problem during Tomcat 5.5.20 startup
- Error configuring application listener of class
myapp.util.WebApplicationContextSupport
java.lang.NoClassDefFoundError: javax/servlet/ServletContextListener
servlet-api.jar is in common/lib.
I've never had such problem with Tomcat 5.0.28.
---------------------------------------------------------------------

[Vasiliy Keretsman]

Martin, Chuck

Thanks for reply.

1. servlet-api.jat is only in tomcat/common/lib

2. cut from web.xml

Post by Martin Gainty
Can we see the web.xml listener element configuration for ServletContextListener and any listener's deriving from ServletContextListener

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<listener>
<listener-class>myapp.util.WebApplicationContextSupport</listener-class>
</listener>

Post by Martin Gainty
have you verified your $CATALINA_HOME/commons/lib/servlet-api.jar is the same as the OS specific distro jar?

Downloaded binary distro from Tomcat site. OS Linux (archlinux & debian)

Just tried 5.5.15 and 5.5.17 - the same problem.

it doesn't happen in 5.0.28 though.

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[Vasiliy Keretsman]

Hi!

The problem was solved.

Linux version of catalina/bin/setclasspath.sh in 5.5.15,17,20 hides
the following classpath setting under condition. With tools.jar in
classpath it works.

if [ "$1" = "debug" -o "$1" = "javac" ] ; then
CLASSPATH="$JAVA_HOME"/lib/tools.jar
fi

Btw, setclasspath.bat does not contain such condition as well as
bat/sh of 5.0.28

Sounds odd, but it helped.


Best regards,
Vasiliy

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[Caldarale, Charles R]

Post by Vasiliy Keretsman
javax/servlet/ServletContextListener
Linux version of catalina/bin/setclasspath.sh in 5.5.15,17,20 hides
the following classpath setting under condition. With tools.jar in
classpath it works.

That makes no sense at all, since there are no javax.* classes in
tools.jar. The only thing that Tomcat might use out of tools.jar is the
javac classes, and then only if you configure it to use javac instead of
the default compiler.

- Chuck


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[Vasiliy Keretsman]

Post by Caldarale, Charles R
That makes no sense at all, since there are no javax.* classes in
tools.jar. The only thing that Tomcat might use out of tools.jar is the
javac classes, and then only if you configure it to use javac instead of
the default compiler.

I know it looks strange.
I manually added servlet-api.jar to CLASSPATH at first and Tomcat
started without errors.
Afterwards i've just compared setclasspath.sh in both 5.0 and 5.5.

Vasiliy

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[Caldarale, Charles R]

Post by Vasiliy Keretsman
javax/servlet/ServletContextListener
I manually added servlet-api.jar to CLASSPATH at first and Tomcat
started without errors.

You've got something else going on. Tomcat completely ignores any
existing CLASSPATH setting and establishes its own; the system
classloader is used only for bin/bootstrap.jar.

Post by Vasiliy Keretsman
Afterwards i've just compared setclasspath.sh in both 5.0 and 5.5.

They are different because 5.0 used the javac classes from tools.jar
whereas 5.5 includes its own Java compiler. That's why 5.0 required a
JDK and 5.5 needs only a JRE.

You might want to run with -verbose:class just to see where classes are
really being loaded from.

- Chuck


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[Vasiliy Keretsman]

hi!

Post by Caldarale, Charles R

Post by Vasiliy Keretsman
I manually added servlet-api.jar to CLASSPATH at first and Tomcat
started without errors.

You've got something else going on. Tomcat completely ignores any
existing CLASSPATH setting and establishes its own; the system
classloader is used only for bin/bootstrap.jar.

Sorry, forgot to mention that just for test i had added
servlet-api.jar in setclasspath.sh after CLASSPATH reset line.

Post by Caldarale, Charles R
They are different because 5.0 used the javac classes from tools.jar
whereas 5.5 includes its own Java compiler. That's why 5.0 required a
JDK and 5.5 needs only a JRE.
You might want to run with -verbose:class just to see where classes are
really being loaded from.

Thanks. Just did it.

Without tools.jar in classpath the exception still occures (See at the bottom).

With tools.jar in classpath it goes well:

[Loaded javax.servlet.ServletContextListener from
file:/opt/apache-tomcat-5.5.20/common/lib/servlet-api.jar]
[Loaded enCode.util.spring.WebApplicationContextSupport from
file:/home/vasya/prj/trunk/WEB-INF/classes/enCode/util/spring/We
bApplicationContextSupport.class]


I thought it might have been problem related to SpringFramework somhow
and tested it without spring context. But it didn't help either



[Loaded org.apache.log4j.spi.NullWriter from
file:/home/vasya/prj/trunk/WEB-INF/lib/jakarta-log4j.jar]
- Error configuring application listener of class
enCode.util.spring.WebApplicationContextSupport
java.lang.NoClassDefFoundError: javax/servlet/ServletContextListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1270)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1201)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3711)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4211)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)
- Skipped installing application listeners due to previous error(s)

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[Peter Björkman]

Hi! I have a web-app residing in "/", the docBase is relative to appBase. I have an issue where I want to serve static files located outside the web-app. For example:

/mydir/index.jsp
comes from the relative docBase as usual.
/images/myimage.gif
comes from /var/static/images/myimage.gif, an absolut directory in the servers filesystem.

Is this possible without creating a separate web-app with another docBase? Could you map "/images" to that file system path "/var/static/images/"? I've been looking through the documentation (5.0) for this, but cannot find it anywhere...

Regards
Peter
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[Mark Thomas]

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The correct procedure is to create a new message with a new subject.
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[Peter Björkman]

(And sorry for hijacking the previous thread - my bad, won't happen again).

Hi! I have a web-app residing in "/", the docBase is relative to appBase. I have an issue where I want to serve static files located outside the web-app. For example:

/mydir/index.jsp
comes from the relative docBase as usual.
/images/myimage.gif
comes from /var/static/images/myimage.gif, an absolut directory in the servers filesystem.

Is this possible without creating a separate web-app with another docBase? Could you map "/images" to that file system path "/var/static/images/"? I've been looking through the documentation (5.0) for this, but cannot find it anywhere...

Regards
Peter


PETER BJÖRKMAN - SYSTEM ARCHITECT
josh / together is better / www.josh.se
sveavagen 59 / 113 59 stockholm / sweden
phone [phone] / mobile [phone]
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[Rashmi Rubdi]

Peter,

I'm not too sure if this will help but, you might want to try URL Rewriting, if you have Apache as the web server you could use it's rewrite features.

I don't think Tomcat5.0 has a Rewrite feature built in but I came accross this one: URLRewriteFilter http://tuckey.org/urlrewrite/ it works with Tomcat.

Then you could map <from>(*.)/images(*.)</from> , to <to>(*.)/var/static/images/(*.)</to>

I'm not sure if it'll work since as you've mentioned /var/static/images/ is outside your applications context.

-Regards
Rashmi

----- Original Message ----
From: Peter Björkman <***@josh.se>
To: ***@tomcat.apache.org
Sent: Friday, November 10, 2006 3:11:54 AM
Subject: Path mapping...


(And sorry for hijacking the previous thread - my bad, won't happen again).

Hi! I have a web-app residing in "/", the docBase is relative to appBase. I have an issue where I want to serve static files located outside the web-app. For example:

/mydir/index.jsp
comes from the relative docBase as usual.
/images/myimage.gif
comes from /var/static/images/myimage.gif, an absolut directory in the servers filesystem.

Is this possible without creating a separate web-app with another docBase? Could you map "/images" to that file system path "/var/static/images/"? I've been looking through the documentation (5.0) for this, but cannot find it anywhere...

Regards
Peter


PETER BJÖRKMAN - SYSTEM ARCHITECT
josh / together is better / www.josh.se
sveavagen 59 / 113 59 stockholm / sweden
phone [phone] / mobile [phone]
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[Mark Thomas]

Post by Rashmi Rubdi
I'm not too sure if this will help but, you might want to try URL Rewriting, if you have Apache as the web server you could use it's rewrite features.
I'm not sure if it'll work since as you've mentioned /var/static/images/ is outside your applications context.

This won't work. Given the paths you have provided, you aren't using
Windows so you could create a symbolic link in your webapp directory
the links to the images directory. You will need to set allowLinking
to true for this to work.

Mark

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