Hi,

Following on from my previous message 
<https://groups.google.com/a/apereo.org/g/cas-user/c/4vknnIb3_hA/m/Tf89DkJlBAAJ>
 about 
CAS throwing an NPE when a service specifies renew=true, I'm trying to 
write a Servlet Filter to remove this parameter from an incoming request 
before it gets to CAS.

I've written a filter and put it in 
"src/main/java/..../StripRenewFilter.java", then tried adding the filter to 
the web.xml 
<https://github.com/apereo/cas-overlay-template/blob/master/src/main/webapp/WEB-INF/web.xml>file
 
as:
  <filter>
    <filter-name>StripRenewFilter</filter-name>
    <filter-class>uk.ac.bris.adt.StripRenewFilter</filter-class>
  </filter>

  <filter-mapping>
    <filter-name>StripRenewFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

But it doesn't take effect.  I've also tried annotating the filter with 
@WebFilter which equally had no effect.

I'm running CAS locally using "gradlew run"

How can I load a filter into a CAS server to achieve this?

Thank you!
Mark van Rossum

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