WARN No appenders could be found for logger 解决
在spring的web项目中常常会在tomcat启动的时候出现这种提示:
引用
log4j:WARN No appenders could be found for logger
(org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN Please initialize the log4j system properly.
网上有好多解决办法都不管用,这个提示应该是读入web应用程序的log4j.properties文件之前就报出来了。是在加载org.springframework.web.context.ContextLoader这个listener的时候没找到log4j的配置文件造成的。
仔细查看web.xml发现在加载org.springframework.web.context.ContextLoader这个listener之后才加载org.springframework.web.util.Log4jConfigListener,把log4j的配置放到org.springframework.web.context.ContextLoader之前,就可以解决这个问题了。
- <!-- 以下3项参数与log4j的配置相关 -->
- <context-param>
- <param-name>log4jConfigLocation</param-name>
- <param-value>/WEB-INF/log4j.properties</param-value>
- </context-param>
- <context-param>
- <param-name>log4jRefreshInterval</param-name>
- <param-value>60000</param-value>
- </context-param>
- <listener>
- <listener-class>
- org.springframework.web.util.Log4jConfigListener
- </listener-class>
- </listener>
- <!-- end -->
- <listener>
- <listener-class>
- org.springframework.web.context.ContextLoaderListener
- </listener-class>
- </listener>