log4j web 初始化

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