摘要： 针对分布式空间信息领域服务的特点，结合“国家科学数据共享工程”的开发实践，提出了改进空间服务质量的3种策略：针对组件纵向关系的设计，采用面向服务结构和中心元数据服务器对OGC服务框架的改进策略；针对组件横向关系的设计，引入面向方面编程的策略；针对空间信息的领域特点，采用地图服务和空间数据缓冲池的设计策略。给出了一个原型系统实现的拓扑结构和相应的测试数据，验证了3种策略优越性。

关键词: 面向服务的框架, 面向方面编程, 空间信息Web服务

Abstract: According to the characteristic of distributed Spatial Information Web Services(SIWS), this article outlines three strategies for improving quality of spatial services based on the developed practice of “national science data sharing project”. The strategies are as following: improving the framework of OGC (Open Geospatial Consortium) by introducing service-oriented architecture and metadata server; the introduction of aspect oriented programming into SIWS; the strategy for implementing Web Map Service (WMS) and spatial data buffer in spatial information domain. It presents the topological structure of our prototype and some corresponding test data to verify these three strategies.

Key words: service-oriented architecture, aspect oriented programming, spatial information Web Services

中图分类号: 

• TP39