Design And Implementation Of Middle School Online Examination System Based On J2EE

With the universal application of computer in middle school, the development of online examination information system has become an effective way to accumulate teaching achievement and enhance students' self testing ability. Testing process of a certain middle school is selected as research background in this dissertation, in order to develop practical online test information system.System develop process is planned, it is divided into several develop stages, and system develop aim of every stage are determined. Actual requirement for online examination system of participants are analyzed. According to participants' actual requirement, use case analysis model is established. Functional feature of information is designed, and the system is divided into several modules, which include system management module, question library module, test management module and score management module. Database structure for every module is designed, and database tables are established. The technical platform of J2 EE is selected for system development, and technical combination scheme of JSP, Struts, Hibernate are used for system develop circumstance establishment. The system is divided into three layers of View, Action and DAO according to MVC design pattern. The View layer is responsible for client interface establishment, the layer of Action is responsible for business process, and the layer of DAO is responsible for communication between information system and database. Package structure is designed, for functional class management orderly. Business class model and sequence model are designed for every function, and the system is accomplished. System test result show that the system attain requirement analysis aim.Online examination system developed in this dissertation attained system design aim, and provided technical support for examination in middle school.