基于WebService的Internet GIS集成与应用

InternetGIS是GIS发展的重要方向,InternetGIS要想真正达到实用化,必须解决网络环境下多源异构空间数据集成、网络环境下的空间元数据服务等关键技术。WebService是分布式计算领域出现的最新成果,它是实现异构系统互操作的理想计算模型。本文研究了基于WebService的InternetGIS软件的体系结构,网络环境下多源异构空间数据的互操作实现,基于WebService的空间元数据服务,提出了一个基于WebService的InternetGIS应用系统集成方案,以期为InternetGIS应用集成提供一个新的思路,并以南京“数字房产”项目为例介绍了其应用。

Researches and Application of Internet GIS Integrations Based on Web Service

Internet GIS is one of the most important developing directions of GIS,to build a practical internet GIS system, we must resolve the key technology of multi-source spatial data integration in the internet environ-ment,and spatial meta-data services in the internet environment. Web Service is a new technology in distributed computing domain,and an ideal model to implement inter-operation of different systems. We first made researches on the structure of internet GIS based on Web Service by comparing different computing models and different internet GIS software system structures,and provided a solution to Internet GIS application integration based on standard protocols such as XML, SOAP. Then,we studied the inter-operation of multi-source spatial data in internet environment, compared different multi-source spatial data integration solutions such as spatial data conversation, spatial data directing reading,and provided a new idea in multi-source spatial data integrations based on Web Service. In order to discover spatial data quickly in internet environment,we need a spatial meta-data system,and set up the spatial meta-data service system based on Web Services. The result indicated that spatial meta-data service system should be an essential part in internet GIS system structure. Finally, we introduced a practical example of internet GIS application based on Web Service, Nanjing "Digital House Property" internet GIS system. It is a mixture structure of GIS system,which was built in B/S part using Web Service technology and effective result was gained.