Application Research Of MVC On Multi-Tier Web Architecture

In recent years, with the quick development of Internet, the complexity and the scale of Web appliction are increasely enlarged. Thus, high flexibility, reliability and personality are needed for the Web appliction. Yet, because of the interweaveraient of user-interface, flow control and business logic, the system performance will decrease. At the same time the traditonal single user-interface can not meet the new demand of mutiple user-interfaces.In order to solve this kind of problems, the traditional MVC pattern is introduced in the paper. Firstly, a new technology solution, i.e. Servlet+JSP+JavaBean+EJB+XML, is proposed. Secondly, based on the modification of traditional MVC pattern, the paper brings forward a new MI_WMVC pattern, which is suitable for the characteristic of multi-tier Web architecture. Under this pattern, the system functions can be clearly devided and the system can support mutiple user-interfaces.The emphasis of the paper includes design principle, key technique and algorism of controller, model and view of MI-WMVC pattern. Based on this pattern, a "Course Practice System" is developed according to the Object-Orient software engineering thingking.The new ideas of the paper includes: i) designs and realizes two XML configration files of request-mapping file and view-definition file, the controller can control system flow flexibly by parse these two files, ii) realize the support of multiple user-interfaces by the use of XML.