tomcat源码阅读18

org.apache.catalina.users包

AbstractGroup	Convenience base class for Group implementations.
AbstractRole	Convenience base class for Role implementations.
AbstractUser	Convenience base class for User implementations.
Constants	Manifest constants for this Java package.
MemoryGroup	Concrete implementation of Group for the MemoryUserDatabase implementation of UserDatabase.
MemoryRole	Concrete implementation of Role for the MemoryUserDatabase implementation of UserDatabase.
MemoryUser	Concrete implementation of User for the MemoryUserDatabase implementation of UserDatabase.
MemoryUserDatabase	Concrete implementation of UserDatabase that loads all defined users, groups, and roles into an in-memory data structure, and uses a specified XML file for its persistent storage.
MemoryUserDatabaseFactory	JNDI object creation factory for MemoryUserDatabase instances.