【摘要】 立足企业级GIS应用 ,在分析了传统的瘦客户端、中等客户端、胖客户端的体系结构及各自的优缺点的基础上 ,提出了一种栅格矢量混合的模式 ,既保证了客户端处理矢量数据的能力 ,又将数据传输量控制到最小 .基于三种分布式对象标准的两种COM +和EJB ,提出了两种企业级WebGIS应用的解决方案 .展望了影响未来WebGIS发展的几项技术 .更多还原

【Abstract】 The authors firstly illustrate the architectures with three models thin client,medium client and thick client,then present a mixed model which transfers both vector and raster data between client side and server side with the advantage of high interactivity in client and medium data transfer. Afterward,the authors give two enterprise scheme based on two standards:COM+and EJB. Finally,the authors list some key technologies which will affect the future WebGIS OpenGIS,XML,Windows. net,CORBA,EJB,etc.更多还原