在web.xml中加入过滤器

  <filter>
  <filter-name>authority</filter-name>
  <filter-class>com.topcheer.filter.AuthorityFilter</filter-class>
  <init-param>
   <param-name>NotRequiredAuthorityURL</param-name>
   <param-value>/downloadImageControl.action,/initLogin.action,/default.jsp,/logout.jsp,/invalidation.jsp,/login.action,/default.action</param-value>
  </init-param>
  <init-param>
   <param-name>invalidURL</param-name>
   <param-value>/invalidation.jsp</param-value>
  </init-param>
 </filter>
 
 <filter-mapping>
  <filter-name>authority</filter-name>
  <url-pattern>*.action</url-pattern>
 </filter-mapping>
 <filter-mapping>
  <filter-name>authority</filter-name>
  <url-pattern>*.jsp</url-pattern>
 </filter-mapping>