| 基于Ajax的WebGIS服务的研究与实现 |
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| 引用本文： | 陈晨,殷肖川,陈玉,张照雷. 基于Ajax的WebGIS服务的研究与实现[J]. 计算机应用与软件, 2009, 26(4) |
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| 作者姓名： | 陈晨 殷肖川 陈玉 张照雷 |
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| 作者单位： | 空军工程大学电讯工程学院,陕西,西安,710077 |
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| 摘 要： | 传统的请求响应式Web通信机制会造成页面的整体更新,不易实现地图服务;ActiveX和JavaApplet实现的WebGIS服务受限于浏览器的设置和操作系统的类型.利用Ajax(Asynchronous JavaScript and XML)的异步通信及与其平台无关的特点,将预操作的地图分块下载至浏览器,并进行组织和管理,加载至层中实现基本的缩放、拖动地图操作;利用预缓冲机制实现地图的无等待拖动.摆脱了地图服务实现对于环境的依赖.
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| 关 键 词： | 异步通信 |
STUDYING AND IMPLEMENTING WEBGIS SERVICE BASED ON AJAX |
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| Chen Chen,Yin Xiaochuan,Chen Yu,Zhang Zhaolei. STUDYING AND IMPLEMENTING WEBGIS SERVICE BASED ON AJAX[J]. Computer Applications and Software, 2009, 26(4) |
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| Authors: | Chen Chen Yin Xiaochuan Chen Yu Zhang Zhaolei |
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| Affiliation: | Institute of Telecommunication Engineering;Airforce Engineering University;Xi'an 710077;Shaanxi;China |
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| Abstract: | It is not easy to implement WebGIS by traditional request-response web communication style,for it refreshes the whole page.WebGIS service implemented by ActiveX and JavaApplet is restricted to the web browser setting and the type of operation system.In this article it gives a new method to download pre-operation map to browser in partition using asynchronous communication of Ajax and its character of independence on platform,then to organize and manage map pieces as well as to load them to layer for impleme... |
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| Keywords: | Ajax WebGIS XMLHttpRequest |
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