The Improvent And Application Of Tranditional EJB Architecture

With the development of global economic integration and e-commerce, The traditional Web technology can' t already meet the fast recombinating of enterprises and the complexity, the security and the changeable commercial form of inner logic within e-commerce. In this case, J2EE(Java 2 Enterprise Edition)technology shows it's talent.As one of the most popular major developing platforms nowadays, J2EE offered the abundant technology choosing and service support for the development of enterprise layer Web uses. But the variety of J2EE platform technology and the complexity of application system of the enterprise layer development have brought a lot of difficulties and challenges to implementation of J2EE project either. This paper give the studying and analysis of the architecture the technical specification of traditional J2EE/EJB(Enterprise JavaBeans),probe into the relevant concept of J2EE/EJB architecture and operation principle of multi-layer distributed enterprise's application and development based on EJB deeply,Describing the defect of traditional EJB architecture in performance,access speed,expansibility and deficiency of the maintainability.The Paper has put forward a improved distributed multi-layer application architecture on the basis of traditional EJB architecture, which add Data Access Layer,Common Workflow Object Layer and Fast-lane Reader.now the existing system of three layers structure that makes expands and becomes five layers.Data Access layer shields the data difference of resource, realizes the loose coupling of data access and the varied type of datasourse,the Workflow Object Layer probider an unified,workfiow-oriented interface to customer,it separates the management&uses and the realization of Workflow Object.Fast-lane Reader offers a no-EJB method to access data resource and accelerates read-only data access and improves the system's efficiency.Through the improvement on these architecture, which remedies some EJBtechnology's insufficient, make EJB architecture able to meet the demand for the application system further.Finally based on these research results,I design and implement the comprehensive management information system of educational administration of Shanghai municipal Party committee Party school.