基于J2EE四层体系框架系统的研究与实现

C／S两层结构通过静态页面在Internet上发布信息，B／S三层结构把数据的生成和数据的表现集成在动态页面中，使动态页面变得非常庞大，且应用的表现和逻辑处理混合在一块。我们设计井实现的基于J2EE四层结构的系部动态网站，根据生产-消费模式，将应用的逻辑处理和应用的表现相分离，WEB服务器负责应用的表现，应用逻辑层负责应用的逻辑处理。前台系统即消费子系统，为访问者提供信息的呈现；后台系统即生产子系统，提供对网站的管理功能。最后讨论了基于J2EE动态网站的安全性构架以及安全的实现方法。

Research and Implementation of Four- level - framework Based on J2EE Platform

The C/S module was published the news on the internet through static pages, The data was integrated building with comporting on the B/S module,it made the page very large, and not good for the application with logic management, In the new four level module, the logic management was aparted by the application, the WEB server manage the application, the logic was managed by the level of application. The front system is one system of consumption can provide the information for Browser;The back system is one system of production can provide the management, At last, we discuss the scurity in the dynamic WEB based on J2EE platform.