Design And Implementation Of Communist Youth League Cadre Online Training Information System Based On J2EE

Training plays an important role in youth league cadres' growth process.The development of online training information system can effectively overcome the shortcomings in traditional training process,and provide information technical support for training business.Youth league cadre training business of a certain city in Henan province is selected as research background in this dissertation,in order to develop online training information system.System users' actual requirements are investigated,based on requirement investigation results,the system is divided into four modules which include system management module,course management module,online training module and comprehensive business module.System users are divided several kind of participants,which include system manager,training manager,student and etc.Participants' requirements are modeled by UML use case diagram.System performance targets are analyzed,to ensure system running steadily.Data persistence requirements of every module are analyzed,and database models are designed.Database models include ER model and relation model.Database model obey database design 3NF principle,thus to reduce data redundant level and exception occur probability during communication process between program and database.The technical of J2 EE is selected for system development,the framework combination of Struts and Hibernate is used for software circumstance establishment.According to MVC design pattern,the system is divided into three layers of View,Action and DAO.The layer division scheme enhanced cohesion level and reduced coupling level in different layers.Business classes and methods are designed,and calling sequence between different layers are designed too.System code is accomplished and and interfaces of every function are accomplished too.System test cases are designed,system test result show that information system developed in this dissertation attain system design requirement.Youth league cadre online training information system running stable,it meet the requirements of the cadre training work,and enhanced information level for training business.