The Research And Design Of The Competitive Courses Online Platform Based Of J2EE System

With the development and the wide application of the network technology, online learning has been the hot topic of modern education. In conformity with the current situation, the State Education Commission puts forward the idea of "Quality Project"—chiefly the perfection of the state-level competitive courses, to share the advanced teaching resources, improve the quality of both teaching and talents. The core and central task of modern remote learning consists in the development of a wide variety of the first-class online courses and the setup of Web distance learning systems. Thus, the online learning, communicating, answering questions will be realized by sharing the teaching materials via the network.This article discusses the author's perception and the basic principles on which the competitive courses Online Platform Based of J2EE System can be built and also illustrates the main functions of different modules, especially how to meet the requirements of the modules and accomplish the development and design of the competitive courses.Four-level structure should be applied in the system. Browser-level can provide visual images interface for the customers; web-server reacts to the customers and offers data required; application-level involves the application logic to accomplish the corresponding computing and data operation; DB Server stores and processes data. The system is characterized for its flexibility, generality, compatibility and serviceability with the use of this multi-level structure, each specializing in one particular function.Tasks of the system and communication between the users and the system can be performed on the Web. Access to the data on the Web can also be realized by connecting JSP and Servlet with the application of Javabeans. With the help of Java technology, users can set up password and obtain the access; with the introduced access limit to the data control, the safety, integrity and unanimity can be effectively guaranteed; the efficiency ofthe access to data can be greatly improved with the use of connection pool technology.