前一阵子和朋友一起参与了一个实际的EJB(Enterprise JavaBean) 应用 系统开发，在其中学习到了许多有用的技术和经验。虽然目前的市面上已经有许 多讨论EJB 技术的书籍和文章，但是似乎尚未有以实际案例做为讨论内容。鉴 于目前许多公司和系统都开始采用Java 和EJB 的技术，因此笔者在此野人献 曝，希望以一个简化的范例来说明在开发EJB 应用系统时会遭遇到的技术问题 以及一些设计上的取舍。当然对于J2EE 有兴趣的读者也可以依据文章讨论的内 容跟随作者一起开发这个范例EJB 系统。-while ago, and friends to participate in a practical EJB (Enterprise JavaBean) application systems development, in which to learn a lot of useful skills and experience. While the market has been much discussion EJB technical books and articles, but it seems there is no actual case as a discussion. Given the current system, and many companies are beginning to adopt Java and EJB technology, the author presented in this savage sun, hoping that a simplified example to illustrate the development of EJB applications will be encountered technical problems and some design choices. J2EE course for interested readers can rely on the contents of the article the author together with the development of this paradigm EJB systems.