springMVC项目中配置log4j.properties路径

log4j.properties不打到war包中，单独写到一个存放配置文件的文件夹中，在容器中将该文件夹放入classpath，在web.xml中可以如下配置：

  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext-dao.xml,classpath:SpringMVC.xml
    </param-value>
  </context-param>

  <context-param>
    <param-name>log4jConfigLocation</param-name>
    <param-value>classpath:db2client-cfg/log4j.properties</param-value>
  </context-param>

  <context-param>
    <param-name>log4jRefreshInterval</param-name>
    <param-value>60000</param-value>
  </context-param>

  <!-- 配置log4j.xml监听器-->
  <!--需要配置在 ContextLoaderListener之前-->
  <listener>
    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
  </listener>

  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>