readme.dist

3.02~3.03
<authentication-provider
user-service-ref="calendarUserDetailsService"/>
1、CalendarUserDetailsService is added to our Spring configuration automatically, since we leverage
classpath scanning and the @Component annotation.
2、Create a new class named CalendarUserDetailsService that will make Spring Security aware of our
CalendarUser object.
3、Removing references to UserDetailsManager
  We need to remove the code we added in the DefaultCalendarService
  that used UserDetailsManager to synchronize the Spring Security users
  and CalendarUsers.

3.03~3.04
1、we will create a CalendarUserDetails
object, which can be referred to as both UserDetails and CalendarUser.
 return (CalendarUser) authentication.getPrincipal(); 获得当前已认证的用户的名字（obtain the name of the currently authenticated user）
2、<div>
  Welcome <sec:authentication property="principal.name" />
  </div>

3.04~3.05
1、Creating a custom AuthenticationProvider object;