Spring security with custom UserDetailsService

http://www.codercorp.com/blog/spring/security-spring/configuring-spring-security.html

http://www.codercorp.com/blog/spring/security-spring/spring-security-login-logout-form.html

http://www.codercorp.com/blog/spring/security-spring/writing-custom-userdetailsservice-for-spring-security.html