Tomcat with client certificate and Grails

I found the right information on how to configure tomcat with client certificates on stackoverflow, configured my tomcat, deployed a grails application and searched within the grails application for the client certificate. I found it in the property

request.request.reque开发者_运维技巧st.attributes['javax.servlet.request.X509Certificate']

Is this the right way to access the certificate? Is looks a bit wrong :-)

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ok. I think I've got it... this looks better:

request['javax.servlet.request.X509Certificate']