about log4j

错误：

log4j:WARN No appenders could be found for logger (org.apache.catalina.startup.Embedded).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN No appenders could be found for logger (org.apache.commons.beanutils.ConvertUtils).
log4j:WARN Please initialize the log4j system properly.

无论在tomcat/bin下还是用eclipse启动服务，都只显示上述信息，而没有其他的服务启动信息

解决方法：把common/bin/log4j1.2.8.jar去掉