使用EJB写的一个用户查询,购买手机的程序,功能比较简单, 可以做为学习EJB的示例程序, 使用了Session Bean,Entity Bean,MessageDriven Bean.-It is a simply JAVA EE EJB program used to query or buy phone. it is simply but can be used to learn quickly different parts of EJB. This program use Sessio