基于FLEX技术构建可离线Web应用程序的研究与实现

Research and Implementation of Web Application Support Offline Processing Based on Flex

随着Web应用程序复杂性越来越高,传统的Web应用程序开始逐渐不能满足Web浏览者全方位的体验需求。RIA(Rich Internet Application,富网络应用系统)技术将客户层的设计从以页面为中心提升到以组件为中心,从而改进了客户端程序的设计。本文在研究RIA及Macromedia Flex技术基础上,提出如何构建可离线工作的Web应用程序。实际项目证明利用本地存储数据使浏览者可以在明确脱机、低带宽或连接时断时续的情况下高效地工作,同时可提高系统的响应速度,减少用户的等待时间。

As Web application is growing more and more complicated, traditional Web application will not satisfy Web user＇s all-sided experience requirement sooner or later. RIA （Rich Internet Applications） technology promotes the designing of client representation layer from page-oriented to component-oriented which enhances the designing of client programs. Based on the technology of RIA and Macromedia Flex,we propose methodologies of how to design Web application run in occasionally connected environments. Project experience justifies that using local storage allows the user to continue to work efficiently when explicitly offline, in low bandwidth, or when connectivity is intermittent, andcan improve system＇s response speed,reduce user＇s waiting time.