小型的图书销售管理系统，典型的 角色 用户权限模式。

PB_OOP_BookSell\src\com\pb\authority\impl\DefaultCustomer.java
...............\...\...\..\.........\....\DefaultStoreMgr.java
...............\...\...\..\.........\Normal.java
...............\...\...\..\.........\StoreMgr.java
...............\...\...\..\biz\BookBiz.java
...............\...\...\..\entity\Book.java
...............\...\...\..\......\ex\Bag.java
...............\...\...\..\......\..\CD.java
...............\...\...\..\......\..\EX.java
...............\...\...\..\......\..\ExFactory.java
...............\...\...\..\......\..\Pen.java
...............\...\...\..\role\ext\Customer.java
...............\...\...\..\....\...\StoreManager.java
...............\...\...\..\....\Role.java
...............\...\demo\test\Test.java
...............\...\....\user\User.java
...............\...\com\pb\authority\impl
...............\...\...\..\entity\ex
...............\...\...\..\role\ext
...............\...\...\..\authority
...............\...\...\..\biz
...............\...\...\..\entity
...............\...\...\..\role
...............\...\...\pb
...............\...\demo\test
...............\...\....\user
...............\...\com
...............\...\demo
...............\src
PB_OOP_BookSell

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