Exception when starting tomcat

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Nov 23rd, 2009, 11:20 AM
josephanoakes

Exception when starting tomcat

Hi all

I hope you can help

We are trying to use spring ROo for some quick development of a small web database app we need.

I have followed the tutorial but to no avail i have googled around and for the following error people ahve suggested adding spring web and spring-webmvc jars in to WEB-INF/lib

This hasnt made a difference

also spring -2.0.7.jar has been mentioned which i have just added to the projects build path.

Im sure its something simple as its obviously just a missing jar but i can find out what...

Thanks for help!

Code:

23-Nov-2009 17:10:56 org.apache.catalina.core.StandardEngine start INFO: Starting Servlet Engine: SpringSource tc Server/6.0.20.C 23-Nov-2009 17:10:57 org.apache.catalina.core.StandardContext listenerStart SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener java.lang.NoClassDefFoundError: org/springframework/core/io/Resource at org.springframework.web.context.ContextLoaderListener.createContextLoader(ContextLoaderListener.java:57) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:48) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3934) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4429) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardHost.start(StandardHost.java:741) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:587) 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:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:290) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:415) Caused by: java.lang.ClassNotFoundException: org.springframework.core.io.Resource at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1384) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1230) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) ... 17 more
Nov 23rd, 2009, 03:56 PM
Joris Kuipers

When you build your war (using mvn package, for example) the result should amonst other jars contain a org.springframework.core-3.0.0.RC1.jar (or RC2 if you're working against trunk) in your WEB-INF/lib that has the class that's not found. Check if it's there and please do NOT add any old Spring 2.0 jars to your war: Roo apps use Spring 3.0 (well, release candidates thereof for now).
Nov 24th, 2009, 05:06 PM
Ben Alex

You should also ensure you do NOT place any Spring-related JARs anywhere inside your web container's classpath (like server, lib, ext directories). The only Spring-related JARs you need are included in the Roo WAR (and automatically provided when you use mvn tomcat:run or run a server within STS/Eclipse).
May 20th, 2010, 05:44 PM
hoally

Hi,

I'm getting a similar error starting the tomcat server within STS. The weird thing is that this error doesn't happen every time. Only occasionally I get stuck with this error, and restarting STS sometimes would make it go away, and other times it doesn't. I haven't figured out what causes it and how to make it go away. I haven't made any changes to jars in the classpath when this error appears or disappears. Any ideas?

Code:

May 20, 2010 3:35:06 PM org.apache.catalina.core.StandardContext listenerStart SEVERE: Error configuring application listener of class org.springframework.web.context.ContextLoaderListener java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1384) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1230) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3877) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4429) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardHost.start(StandardHost.java:741) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:587) 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:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:290) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:415) May 20, 2010 3:35:06 PM org.apache.catalina.core.StandardContext listenerStart SEVERE: Skipped installing application listeners due to previous error(s)
May 23rd, 2010, 07:12 PM
Ben Alex

Classloader weirdness. Certainly nothing to do with Roo, though. We don't mess with your application or server classloader at any stage.