说明：  OpenLayers作为业内使用最为广泛的地图引擎之一，已被各大GIS厂商和广大WebGIS二次开发者采用。借助OpenLayers强大的扩展功能，可以实现与各个不同的WebGIS平台产品相结合，开发出各具特色的WebGIS应用系统。 本书主要内容涵盖：WebGIS开发基础、OpenLayers开发基础、OpenLayers快速入门、OpenLayers之多源数据加载、OpenLayers之图形绘制、OpenLayers之OGC、OpenLayers之高级功能，最后给出了OpenLayers之项目实战——水利信息在线分析服务系统。
(As one of the most widely used map engines used in the industry, OpenLayers has been adopted by the two developers of the major GIS manufacturers and the vast majority of WebGIS. With the help of the powerful extension function of OpenLayers, we can combine the different WebGIS platform products and develop the WebGIS application system with various features. The main contents of this book include: the advanced function of WebGIS development based on OpenLayers development based on OpenLayers quick start, OpenLayers loading, OpenLayers of multi-source data graphics rendering, OpenLayers OGC, OpenLayers, OpenLayers of the last project combat -- water conservancy information online analysis service system is given.)