一种基于组件的多层WebGIS模型的设计与实现

Design and Implementation of Multiple-layer Model for WebGIS Based on Components

针对WebGIS中存在的系统不稳定、难以扩展及可维护性差等问题,提出一种基于组件的多层WebGIS模型,并论述了如何基于J2EE框架实现该体系结构。实际的系统设计与开发工作表明,基于新体系结构的WebGIS具有较好的集成性与可扩展性,从而缩短了开发周期,降低了开发成本。

Aiming at the lack of stability, extendibility and maintainability in WebGIS （Web-based Geographic Information System） , a multiple-layer model for WebGIS based on components is presented. Furthermore, the detailed implementation of this architecture based on J2EE is described. Practical system design and implementation show that WebGIS possesses better integration and extendibility with this new architecture, which leads to shorter development term and lower development cost finally.