基于ArcIMS与Ajax的WebGIS应用研究

ON APPLICATION OF WEBGIS BASED ON ARCIMS AND AJAX

介绍Ajax技术及其实现原理、ArcIMS的体系结构和工作原理,提出基于ArcIMS与Ajax的WebGIS的方案,并将该方案应用于网吧监控系统的开发。实验表明,综合运用Ajax的异步机制以及Ajax与ArcIMS的混合缓存技术实现的WebGIS,较好地实现浏览器与地图服务器之间的异步交互,均衡了服务器和客户端的负载、提高了用户体验,使整个WebGIS的性能达到最佳状态。

Ajax technology and its implementation principle are introduced in the paper together with the architecture and working principles of ArclMS, and the scheme of WebGIS based on ArclMS and Ajax is brought forward as well. Moreover, the scheme has been applied to the development of internet bar control and supervisory system. Experiments show that the WebGIS, which is implemented with the comprehensive use of Ajax client-side asynchronous mechanism and Ajax and ArclMS hybrid caching technology, well realises the asynchronous interaction between Web browsers and Map servers, balances the load of the server and client and improves users experience. As a result, the performance of WebGIS reaches the best condition.