Web GIS组件方法研究  

Web GIS Component

作　　者：陈能成[1] 龚健雅[1] 朱欣焰[1] 刘琳[1] 

机构地区：[1]武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2002年第4期387-390,共4页Geomatics and Information Science of Wuhan University

基　　金：国家"973"计划资助项目 (G2 0 0 0 0 7790 4)。

摘　　要：在分析WebGIS二次开发需求的基础上 ,提出了基于JavaBean的WebGIS组件概念 ,并详细阐述其特征、体系结构和空间数据组织 ;结合实例InternetGIS_GeoSurfV4 .Internet GIS based on JavaBean can be deployed into two tiers or N tiers application,which contains GIS browser,Web server,GIS application server and spatial database server.GIS browser is the Web browser which supports Java virtual machine,such as Netscape ,Ineternet Explorer.Web Server is the server which supports WWW,servlet and JSP,such as iPlanet Web server.GIS application servers is the servers which finish the critical business logic,such as vector data service,image data service and DEM data service.Database server is the server which stores the spatial data.Spatial data organization on Internet is different from the traditional GIS.The goal is to access data simply and quickly.In general,it's geometry includes point,line,polygon and annotation. GeoSurfV4.0 is an example of Internet GIS software based on JavaBean.It contains four JavaBeans:GeoSurf2D,GeoSurf3D,GeoSurfTheme,GeoRouteServer.There are four different approaches to construct GIS application using component Internet GIS based on JavaBean:Java Application,Java Applet,Java Server Pages and Active Server Pages.

关 键 词：Web GIS组件 JAVABEAN 软件组件 JSP ASP 二次开发 地理信息系统 

分 类 号：P208[天文地球—地图制图学与地理信息工程]