Study of Web-based framework based on J2EE multi-tier architecture
基于J2EE多层架构的Web开发框架研究

This paper put forward J2EE 5-tier architecture by increasing data persistence tier based on classical J2EE 4-tier architecture.Analyzed the localization in implementing object persistence of the J2EE architecture based on Struts and divided the object persistence tier from it,then integrated Hibernate,a lightweight object oriented persistence technology,into the architecture,so that the advantages of each could be shared by all.A multi-source data accessing module was designed by applying the DAO design pattern between business tier and data persistence tier in this architecture to implement identically access various isomerous database with different types,structure,environment and usage.