看详细的tomcat报错信息

WEB-INF/classes目录下新建一个文件叫logging.properties

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

 我们再启动tomcat时，就会在logs目录下生成一个更详细的日志error-debug.xxx.log

查看运行日志

、先切换到：cd tomcat/logs

2、tail -f catalina.out

3、这样运行时就可以实时查看运行日志了