web.xml and class loader

[Bill Goldsworthy]

I'm trying to load a class when Tomcat starts up:

my web.xml:

    
 
  <!-- Call the init servlet -->
  <servlet>
<servlet-name>Foo_Init</servlet-name>
  <servlet-class>my.package.Foo</servlet-class>
<load-on-startup>2</load-on-startup>
  </servlet>
 

The package and everything is OK I think because it was used elsewhere from the same location. It's being shared across webapps now and needs to be initialized beforehand. I'm getting this error but I receive text output in the console from the Foo class which is confusing to me.

   
SEVERE: Error loading WebappClassLoader
  delegate: false
  repositories:
----------> Parent Classloader:
org.apache.catalina.loader.StandardClassLoader@1e1a408
 my.package.Foo
java.lang.ClassNotFoundException: my.package.Foo
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1352)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1198)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1034)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:932)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3917)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4201)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:608)
[...]
 

Any advice?

Thanks
Bill

[Bill Goldsworthy]

Oh, forgot to post the simple servlet:

   
 
package my.package;
 
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
 
public class Foo extends HttpServlet {
 
/**
 * Generated serialVersionUID.
 */
private static final long serialVersionUID = 4082198586689685107L;
 
public void init(ServletConfig config) throws ServletException {
super.init(config);

System.err.println( "Init Foo Servlet" );

}
 
public void destroy() {
super.destroy();

System.err.println( "Destroy Foo Servlet" );
}

 

Thanks!
Bill

[Bill Goldsworthy]

Figured out the problem after reviewing the difference between the shared/
folder and the common/ folder.

After moving the class file for the servlet to common/ the issues were resolved.