abstract
This paper is an online bookstore based on J2EE. By using the appropriate abstract model and the combination of various development tools, the components are arranged in order, and the expansibility and reusability of the program are realized. Firstly, this paper introduces the concepts and principles of J2EE and EJB, as well as JSP and Servlet technology. Then the Eclipse, Tomcat and Jboss system tools used in program development are introduced. Through the understanding of system tools and the configuration of tool running environment, we can understand the whole process of program development. Finally, according to the function and characteristics of this program, the program function is realized by combining the concepts of layer and state session Bean.
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