J2ee Core Technology Research And In E-commerce Applications

With the rapid progress of Electronic Commerce, enterprise applications have to be designed, built, and produced for less money, with greater speed, and with fewer resources than ever before. Java?2 Platform Enterprise Edition (J2EE? technology can do it well. It provides a component-based approach to the design, development, assembly, and deployment of enterprise applications. The J2EE platform gives you a multitiered distributed application model, the ability to reuse components, integrated XML-based data interchange, a unified security model, and flexible transaction control.The Java 2 Platform Enterprise Edition is a robust suite of middleware services that make life very easy for server-side application developers. Enterprise JavaBeans (EJB) component architecture is a vital piece of J2EE, and it allows developers to quickly create scalable enterprise applications. It provides complex middleware enterprise features at no cost to application developers.This paper introduces J2EE architecture in the round , describes some important features and functionalities available in J2EE platform in detail, and discusses its ideas of design and working mechanism. With the example of the E-Commerce system of Petro China Huadong Company, methods of implementation of E-Commerce system with Enterprise JavaBeans, which is the core feature in J2EE Architecture, are described. In following part the advantages of this design compared with other technology are presented. Then the paper introduces some methods of designing a system with better performance. At last, a scalable, efficient access control solution for this system is proposed, which is easy to be modified and restructured.