JA-SIG CAS Client is one popular SSO framework which is difficult for a newbie to learn. This is due to limited documentation and conflicting libraries. This is a sample project which can be used as a skeletal starting-point of your own CAS integration.

This project uses Maven for build. You may view the pom.xml for defining latest cas-client dependency.

For configuring the ServletFilter, you may look into the web.xml.

Contrary to what is seems to be mentioned in CAS documentation, CAS can be configured without SSL (no hassle of certificate generation and deployment across JVMs): see the web.xml of this project.

History

There were two competing CAS Client Java libraries historically: the Yale library and the JA-SIG library. Most of the documentation you find on the web would be for the Yale library.

The JA-SIG CAS Client Java Library version 3.1.x series is an effort to combine the best features of both Yale library and the older JA-SIG library. So version 3.1.x is the preferred client for present development.