Network Based On The Three-tier Shopping System Design And Implementation

E-commerce has been widely used in our life, most e-commerce system based on 3-tier construction, namely presentation layer, business logic components and the data- service layer, there are two kinds development platforms are used in practice. The one is .net, and another is JAVA, with the progress of object-oriented theory and methods in modern Software Engineering, Java technology has been popularly applied in e-commerce field because of its transportability and efficiency. According to a study, about 80% e-commerce platforms ware built with Java. so, we use Java to construct the net-bookstore. In spite of so many developed technologies or frames, such as Struts, EL(Express language) ,JSTL(Java Standard Servelt JSP Library), hibernate and Spring, we only discuss the web frame, that is , struts.The paper discuss the analysis, design and development of net-bookstore based on 3-tier construction by guiding of Unified Modeling Language(UML),using the tools of PowerDesigner, obeying the theory of Rational unified process. During the process of design, we use the stable structure and pattern of MVC, by using Struts, MVC pattern can be achieved easily. In chapter 4, the paper presents detailed code about the customers'selecting books. Of course, those codes are based on Struts framework, at the same time. Code on shopcart in great detail is descripted in paper, from the structure of entity of a book, combining with attributes of book and quantity to compose bookItem class, At last, giving the code of shopping cart. Also the Pay Treasure has been used widely in e-commerce, Interaction between net-bookstore and bank system has been discussed in paper with the help of XFire framework.