<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>WEB-INF/log4j-myAppName.xml</param-value>
</context-param>
myAppName:自定义的应用名称。