Research On J2EE Framework-based ChinaTelecom Value-Added Business System

ChinaTelecom is the biggest Internet Access Provider in China. Under the furious competition circumstances, it is the key to success for ChinaTelecom to take advantages of the platform to build the core competitive powers. ' Vnet' is one of the value-added businesses of ChinaTelecom. By integrating ISP/ICP with ChinaTelecom operation platform, Vnet provides many kinds of wonderful services for Internet users.The Vnet Support System is the underlying management system of Vnet. It facilities ChinaTelecom to control the whole Vnet operation. It is very important to have a strong Vnet Support System for ChinaTelecom.Starting from the angle of system architecture, this paper does many researches, which is based on a wide reference of relevant literature. We try to use multi-technologies of J2EE to build a uniform product of Vnet Support System for all provinces in China. The structure of this paper can be summarized as follows:First, we give the background knowledge of Java and discuss the evolving history from the application on mainframe computer to the B/S structure distributed system, including the structure of our system: Struts/Spring/Hibernate. Second, we deeply discuss these several frameworks and also enumerate their relative merits. Third, it does general requirements analysis and function design of our Vnet Support System. Then, it comes to the emphases on the open architecture design of our system, code autogeneration, core AAA implementation by RuleEngine, differences and attentions in software development between project and product, etc. At last, it also discusses containers clustering and which kind of clustering Vnet Support System should takes.In fact, our research work and implementation products have been used in 14 provinces and municipalities of China.The main contributions of this paper can be concluded as follows: 1. According to the current researc(?) on Struts, Spring, Hibernate, thesolution of these three frameworks based on J2EE is analyzed deeply. And the result could be referred in the other projects of academia.2. Authentication , Authorization, Accounting is the main content of Business Operation Supporting System . From another angle, we use the RuleEngine to implement the AAA, which adapts especially to the complicated and mutable business logic.3. Many design schemas are presented and used to build a robust structure for the whole system.4. According to our development experiences, the attentions which should be paid on our development to solve the problems caused by the differences between the project and products are bringed forwared.5. To attain the goal of 'Login in one place, Free on whole Vnets', the core security strategy SSO is discussed and implemented.