AJAX结合VML在基于B/S模式的实时监测系统中的应用

本文分析了B/S模式实时监测系统中页面动态图形绘制过程所存在的技术难点,提出了采用AJAX技术结合VML在.NET环境下实现无刷新页面、局部数据更新、WEB页面绘图的解决方案,并给出了应用实例。本文研究的振动信号远程监测系统所采用的无刷新页面技术,解决了传统WEB应用程序中的等待页面刷新、以及在快速刷新下刷新进度条的频闪等弊端;所采用的局部数据更新技术减少了网络数据流量,减轻网络负荷;VML结合CSS在客户端绘图提高图形绘制的灵活性,减轻服务器的工作负担。

Application of AJAX and VML in Real-time supervisory System based on B/S Mode

The difficult points of refresh in classic model of web application and drawing dynamic graph in real-time supervisory under B/S architecture are analyzed, and the solution of making use of AJAX and VML to realize the non-refresh page, local data refreshing and drawing graph on web page is put forward.. Newfangled sense on vision is produced by non-refresh web page, and thedisadvantage that long-playing wait and frequent renovation of the progress bar when the page is refreshed is solved; The flow of thedata on the network is reduced so that the network load is lightened by Adopting partial data to upgrade technology; The flexibility israised when draw the graph in the customer end, so that the network load is further lightened by using VML and CSS.