Abstract: This paper presents a method to reducing user waiting time based on the integration of Ajax and J2EE.This method add a Ajax engineer tier in the current J2EE MVC tier, functioning as a module operating with users, and bears part of business logics previously owning to the server end. Applied to the national development fund demonstration project of E-government, it approves that using Ajax in the J2EE system can effectively bring down web server’s pressure, improve system’s response speed, reduce user’s waiting time.

摘要： 本文针对J2EE平台中存在用户等待时间较长的问题，提出了一种Ajax和J2EE平台结合的新方法，并成功地国家电子发展基金项目的电子政务实际应用示范中的政务通4.0上得到应用。该方法在现有J2EE三层体系结构下添加Ajax引擎，在页面部分与用户交互，并分担部分业务层逻辑。实际应用的结果表明，在现有的J2EE平台下应用Ajax技术，使系统层次划分更为清晰,并能减少系统冗余代码，减轻服务器压力，提高系统的响应速度，减少用户的等待时间。