Abstract: Online examination system can take advantage of the network, and improve the quality, efficiency, and equity of the exam paper and the test. It is an extension of the traditional examination room. So, for the problems of test paper quality and security access control in online examination system, combining the ideas of software engineering, we analyzed the overall structure of online examination system in detail, put forward the corresponding overall solution, and designed the software model of the system. In combination with the advanced teaching management method and based on the modern network technology, in this online examination system based on B/S architecture, we realized the functions of the role management, question bank management, test paper composition management, examination control, examination result announcement and query, by using the Struts framework and RBAC model and automatic test paper composition based on knowledge points and difficulty values. Finally, the test running showed that the system improved the quality of the exam paper, controlled flexibly, accessed security, realized good practicability.

Key words: role, online examination, test paper composition