The Application Study For Layer Pattern Of Software Architecture Based On J2EE Standard

In process of develop software, and from many processes practices and method, approximately, may abstract five steps: requirement, analysis, design, code, and test. But the architecture is the skeleton of software, is the most important foundation. The architecture is involves to each step in. Generally as soon as needing the requirement, which should be start to analyze software architecture. The architecture generally is each big function module synthesizes, and then describes relations of each part.Sun Java 2 Enterprise Edition (J2EE) the platform already became the most widespread uses in Web programming technique. In recently years, J2EE Web programming development already became the crux of the information system. J2EE is the Java technology applies to the enterprise operation. It contains the many kinds of operations standard, which as EJB module architecture, JDBC database operation, JMS information transmission, Java Servlets/JSP and so on in Web module procedure, the function formidable also the content is broad and profound. In order to enable the user to be allowed to have to design the J2EE overhead construction application procedure the template, Sun makes set of systems named "Java Pet store". This Web Petstore system was aims at personnel who already is familiar with the Java programming and the J2EE concept. This system is the use standard designs mode, and enables the personnel which use the J2EE architecture to have a reference basis. As soon as this model comes out, very quickly on is used for to regard as compares various J2EE compatible product the basis. Oracle's J2EE Application Server (Oracle9iAS), BEA WebLogic Server, IBM WebSphere which all has the corresponding product. The Java standard spirit originally is various merchant cooperation formulation technical standards, and then acts according to this standard to evaluate the most superior product again.This article said from the software crisis, and analysis research structure, characteristic, realization, and its good and bad points and so on for the layer pattern of software architecture. Then through discusses the J2EE correlation design pattern and the layer pattern of Architectural Cube theory. Recombination J2EE architecture characteristic, and analysis how application does the layer pattern in the J2EE standard. Finally we take Pet store as an example, elaborated how application dose this pattern in the actual J2EE system.