log4j.properties对于web app摆放的位置

转载:
来自：http://blog.csdn.net/totogogo/article/details/1593885
我原来通常都是把 log4j.properties放在WEB-INF目录下, web.xml相应的定义为:

Xml代码  

1. <context-param>  
2.      <param-name>log4jConfigLocation</param-name>  
3.      <param-value>/WEB-INF/log4j.properties</param-value>  
4.  </context-param>  
5.  <listener>  
6.      <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>  
7.  </listener>  

<context-param>     <param-name>log4jConfigLocation</param-name>     <param-value>/WEB-INF/log4j.properties</param-value> </context-param> <listener>     <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener>

这个设置对于该web app没有任何问题。但是如果你要进行JUnit Test，在运行TestCase时，就会发生错误：
log4j:WARN No appenders could be found for logger
log4j:WARN Please initialize the log4j system properly.
那是因为在classpath里找不到log4j.properties，因此我把log4j.properties改放在WEB-INF/classes目录下，web.xml相应的定义改为：

Xml代码

1. <context-param>  
2.      <param-name>log4jConfigLocation</param-name>  
3.      <param-value>/WEB-INF/classes/log4j.properties</param-value>  
4.  </context-param>  

<context-param>     <param-name>log4jConfigLocation</param-name>     <param-value>/WEB-INF/classes/log4j.properties</param-value> </context-param>

这样运行Junit时也会正常！http://longdechuanren.iteye.com/blog/1606566