将如下内容添加至 web.xml

   

   <filter>

<filter-name>jfinal</filter-name>

<filter-class>com.jfinal.core.JFinalFilter</filter-class>

<init-param>

<param-name>configClass</param-name>

<param-value>demo.DemoConfig</param-value>

</init-param>

  </filter>

  <filter-mapping>

<filter-name>jfinal</filter-name>

<url-pattern>/*</url-pattern>

  </filter-mapping>