By the study of Middleware EJB (Enterprise Jave Beans) and t h e development of session beans and entity beans of server port. It was explained that the EJB technology can be used to provide the Beans model for distributed architecture of multi-tier.

• 通过对分布式中间层 EJB(Enterprise Java Beans)的研究 ,以及对服务器端的业务处理组件 (SessionBeans)和数据组件 (Entity Beans)的开发 ,说明 EJB技术可以为分布式的多层结构提供服务器端的组件模型