Design And Implement Distributed Enterprise Information System Based On Web With J2EE Platform

With the development of computer and Internet technolegy, the need of Internet application is increasing.Currently the most attention in enterprise application is how to build distributed information system depend on various resource. In this paper, the research goal is to provide the model and solution of building distributed enterprise information system based on Web with J2EE platform. J2EE provides the infrastructure of distributed application, which also is an advance platform of developing Web application based on J2EE components, such as EJB, Servlet and JSP. According J2EE multi-layer architecture,the model is composed of four layers, which includes client layer,Web layer,EJB layer and data layer.EJB layer provides the distributed service and includes business sublayer and persistent sublayer. Business sublayer implements business logic and persistent sublayer is responsible of operating with data source. As a solution, the model system takes on MVC pattern. Web layer build upon Struts framework. In EJB layer, business sublayer employsEJB components to execute business logic; instead of CMP bean, persistent sublayer adopts Hibernate framework to operate database.In addition, six design patterns are introduced to reduce the tightly Coupled relation among layers, improving system performance and flexibility. Finally, this paper provides an example of building distributed system based onWeb in J2EE platform.