Sometimes during the deployment of new applications in Tomcat
you may see errors like ‘org.apache.catalina.core.StandardContext listenerStart’ in your
This may be caused due to many reasons (missing classes, including javax.servlet.* jars with
your application, etc), but the reason is not displayed in the startup log.
But you can find out what is causing this error by adding logging.properties to your
$TOMCAT_HOME/conf directory, with the following content:
org.apache.catalina.core.ContainerBase.[Catalina].level = DEBUG
org.apache.catalina.core.ContainerBase.[Catalina].handlers = java.util.logging.ConsoleHandler
After that you should be able to see the whole exception and figure out what is
causing your application to fail.