Tomcat:Error listenerStart错误

启动Tomcat启动不了，报以下错：

org.apache.catalina.core.StandardContext startInternal 
SEVERE: Error listenerStart 
org.apache.catalina.core.StandardContext startInternal 
SEVERE: Context [/******] startup failed due to previous errors 

为了调试，我们要获得更详细的日志。可以在WEB-INF/classes目录下新建一个文件叫logging.properties，内容如下

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.juli.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

这样，我们再启动tomcat时，就会在logs目录下生成一个更详细的日志