This paper analyses the overall network teaching system needs, illustrates system design principles and the main function of the system, using EJB for the design including entity EJA, session EJB.

• 摘要分析了网络教学系统的总体需求，运用实体EJB、会话EJB进行组件设计，说明了系统的设计原则与系统的主要功能。