[Mondrian] how to integrate mondrian to jetspeed?

[wzx]

Hi, all
I am now working on integration from mondrian to jetspeed. But currently I meet a serious problem. 
Following is added in my web.xml
<filter>
    <filter-name>JPivotController</filter-name>
    <filter-class>com.tonbeller.wcf.controller.RequestFilter</filter-class>
    <init-param>
  </filter>
<filter-mapping>
    <filter-name>JPivotController</filter-name>
    <url-pattern>/testpage.jsp</url-pattern>
  </filter-mapping>
And it works very well if this project is not worked as a portlet in jetspeed. But if it works as a portlet in jetspeed, it always fails. The error message shows
that the JPivotController doesn¡¯t work. But I don¡¯t know why. I think may be I have written the wrong url-pattern. 
Is there any body have integrated Mondrian to jetspeed successfully? Or have good idea for me.
Very  appreciated.
 
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