有关过滤器

关于过滤器,用处很广这不用我说了,我有个疑问,想问下,我在一个系统里可能用到好多过滤器,如果几个过滤器的作用域有重复的话,请问在 web.xml文件中应该怎么配置

例如:我用到有乱码过滤,作用与整个网页
还有个黑名单过滤器,我只想对一个网页有用  配置如下:
<servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>3</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>3</param-value>
    </init-param>
     <init-param>
     <param-name>Set Character Encoding</param-name>
     <param-value>2</param-value>
     </init-param>
    
    <load-on-startup>0</load-on-startup>
  </servlet>
 
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
 
<!--  注册用的 action 配置-->
  <servlet>
  <servlet-name>NoteServlet</servlet-name>
  <servlet-class>com.egt.struts.action.RegisterAction</servlet-class>
  <init-param>
     <param-name>NoteFilter</param-name>
     <param-value>2</param-value>
     </init-param>
  </servlet>
 
  <servlet-mapping>
  <servlet-name>NoteServlet</servlet-name>
  <url-pattern>/note</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
     <welcome-file>login.jsp</welcome-file>
     </welcome-file-list>

  <filter>
  <filter-name>Set Character Encoding</filter-name>
  <filter-class>com.egt.filter.SetCharacterEncodingFilter</filter-class>
  <init-param>
  <param-name>encoding</param-name>
  <param-value>GBK</param-value>
  </init-param>
  <init-param>
  <param-name>ignore</param-name>
  <param-value>true</param-value>
  </init-param>
  </filter>
<filter-mapping>
  <filter-name>Set Character Encoding</filter-name>
  <servlet-name>action</servlet-name>
<!--  <url-pattern>/*</url-pattern>-->
  </filter-mapping> 
 
<!--  过滤黑名单-->
  <filter>
        <filter-name>NoteFilter</filter-name>
        <filter-class>com.egt.filter.NoteFilter</filter-class>
<init-param>
    <param-name>blackList</param-name>
    <param-value>捣蛋鬼,神经病,艳照门,妈,娘,色</param-value>
</init-param>

</filter>
<!--只过滤注册页面-->
<filter-mapping>
    <filter-name>NoteFilter</filter-name>

    <url-pattern>/super.do</url-pattern>  <!--    此过滤器拦截对象 -->
</filter-mapping>

可是,一旦两个过滤器作用域有冲突的话,就不起作用,知道的请解答下.

主要是颜色不一样的地方,我标出来了,我要是将]<servlet-name>action</servlet-name>改为:<url-pattern>/*</url-pattern>的话,过滤黑名单的就不起作用了,希望高手能给个解决办法!

我用的是两个action 分别控制全局的和一个单独的jsp   用struts+hibernate 做的