①首先导入 log4j的jar包。
②修改web.xml文件,添加如下代码:
<!-- log4j配置文件位置 -->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/classes/log4j.properties</param-value>
</context-param>
<!-- log4j配置文件6000ms自动刷新加载一次 -->
<context-param>
<param-name>log4jRefreshInterval</param-name>
<param-value>6000</param-value>
</context-param>
<!-- log4j添加spring监听器 -->
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>