Research And Implementation Of Distance Education Teaching Support System

System of distance education is the base of distance education. Its performance and functions directly decide the teaching quality and studying effect . The system is distance education supported system based on J2EE three-tier structure ,which applys JSP/Java component technology, applet,Java reflection ,JDBC and so on.The system employs J2EE three-tier based structure.The implementation of multi-tier structure enables the system to have distinguished quality of flexibility, currency and compatibility.Users interact on the system via Web.The system employs the technology of JSP and JavaBeans to access data,which shortens the cycle of system development and reduces the maintenance workThe teaching system mainly resolves two questions ,real-time commucation and teaching by Network.This system supplys many methods by which users can communicate with each others. A subsystem of real-time communication gives support to teachers and students' real-time discussion.The subsystem uses Java reflection to implement a univeral server,which can help the future funcaition's extensibility .The teaching system adopts a way of video and audio streaming to support the distance teaching in the circummstance of network.lt applys the solution of RealNetworks company's stream media , uses media player to play courseware and uses smil and RealOne player's performance to combine different kinds of courseware.