EJB是用于分布式业务应用的标准服务端组件模型。采用Enterprice JavaBeans 架构编写的应用是可伸的、事务性的、多用户安全的。可以一次编写这些应用，然后部署在任何支持Enterprice JavaBeans 规范的服务器平台以供远程访问。-EJB is a standard server-side component model for distributed business applications. Applications written using Enterprice JavaBeans architecture is a stretched, transactional, and multi-user secure. These applications can be written once and deployed on any server platform supports Enterprice JavaBeans specification for remote access.