A Research On The Management Informational System Based On The J2EE Structure

With the popularity of internet and the increasing function of the information in economic growth, the effective application of information has an essential function in improving the economic performance, optimally allocating resources, enhancing the competition and broadening the space for the future development of the enterprises. Thus managers are urgent to need a management system which is suitable for the development of their own enterprises to acquire information quickly and to make decisions which can promote the fast development. The informational management system for the China Tobacco is a designed system based on the J2EE structure according to the need of the development of the China Tobacco Enterprises.This thesis focuses on the software programming of the informational management system based on the J2EE structure, searching the approaches for the exploitation of information management system which is efficient, stable, secure, transplantable and can work cross several platforms.The system employed in the thesis adopts a structure of three levels based on the J2EE structure, namely presentation layer, business logical layer and dada access layer. The design uses the MVC designing model to make the structure of three layers to gain the clear structure of the program which can define the duty of every layer clearly and decrease the disturbance of the program. Struts is the most popular MVC structure nowadays, which is mature and stable. Therefore, the system introduced in this thesis employs the Struts to realize the MVC model and the technique of connection pool from Tomcat data to access to the data aiming to change the previous operation of frequent connection and separation of data. In addition, the system uses the DAO design model to abstract and package the access to the data source and also separate the business logic and the logic of the access to data.In general, the exploitation of Web application based on J2EE and MVC design model can not only solve the problem of traditional exploitation of Web application but also make the system procedure clear and easily be broadened and maintained by using three layers and modularization. At the same time, reasonable employment of the design model will be an optimal allocation of resources.