I tried removing one of the Validation Filters and moved the CAS
Authentication Filter to be the first on the list but I still didn't get
it working. When writing custom authentication filters do they need to
be listed before the CAS Validation filter also or do they need to go
after the all CAS filters?
Thanks,
Laura
On 9/28/11 12:55 PM, Marvin Addison wrote:
Problem is duplicate/ordering of filter mapping:
<filter-mapping>
<filter-name>CAS Validation Filter</filter-name>
<url-pattern>/CasProxyServlet</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>CAS Authentication Filter</filter-name>
<url-pattern>/cas/login*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>CAS Validation Filter</filter-name>
<url-pattern>/cas/login*</url-pattern>
</filter-mapping>
The order of filter invocation is determined by filter mappings, not
filters, and you have a duplicate, which further complicates matters.
In any case you should have exactly one validation filter mapping and
it should follow the authentication filter mapping. Putting the
validation filter _before_ authentication may explain the null
principal you're seeing.
M
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