【摘要】 设计了一个基于J2EE的奥运项目Web管理系统。使用了MVC结构将数据、专业逻辑、表达层、控制逻辑很好地分离开。在表达层中,Servlets通过HTTP和用户交互信息,传给中间层的专业逻辑层进行处理,并产生XML输出文件,最后使用XSLT将XML进行转换,送给不同的客户类型。在专业逻辑层中,使用一个有状态的sessionEJB来实现管理客户清单的逻辑操作,产品逻辑是通过一个entityEJB实现的。订购逻辑也有相应的EJB来完成。最后,完成了调度。更多还原

【Abstract】 In this paper, an olympic project management system on Web based on J2EE is designed and implemented. The MVC method is used to separate the data tier, business logic, expression tier, and control tier. In the expression tier, Servelts are used to interact with the users through HTTP. The information is first transferred to the business logic tier for processing, then XML files are produced, and at last the XSLT is employed to transfer the XML files into different formats for different user types. In the business logic tier, a stateful session EJB is used to manage the operations of client lists. The product logic is implemented by an entityEJB. The order logics are also coded based respective EJBs. Finally, the deployment is accomplished.更多还原