Tomcat error Log view

Today, start Tomcat can not start, reported the following error:

Org.apache.catalina.core.StandardContext startinternal
Severe:error Listenerstart
Org.apache.catalina.core.StandardContext startinternal
Severe:context [/******] startup failed due to previous errors

On the internet to find more than n articles, are not to the point.
Later found a method on the foreign website
Http://grails.1312388.n4.nabble.com/Deployment-problems-td4628710.html.
I've tried it, it's OK. The programme is as follows.

The Tomcat's mistake was too vague to report anything wrong and only prompted the error listenerstart. In order to debug, we need to get a more detailed log. You can create a new file in the Web-inf/classes directory called Logging.properties, which reads as follows

Java Code handlers = Org.apache.juli.FileHandler, Java.util.logging.ConsoleHandler ###################################   ######################### # Handler specific properties.   # describes specific configuration info for handlers. ############################################################ org.apache.juli.FileHandler.level = FINE ORG.APACHE.J Uli.      Filehandler.directory = ${catalina.base}/logs Org.apache.juli.FileHandler.prefix = error-debug. Java.util.logging.ConsoleHandler.level = FINE Java.util.logging.ConsoleHandler.formatter = Java.util.logging.SimpleFormatter

This way, when we start Tomcat again, a more detailed log error-debug.2012-05-31.log is generated in the logs directory.

Let's go in and see what's wrong.
The mistake I came across was filenotfoundexception. You should have all kinds of mistakes, so you need to analyze the specific problems.
Tomcat's logging documentation is specific to the reference http://tomcat.apache.org/tomcat-7.0-doc/logging.html