Multi-source Spatial Information Organizations Publishing Platform To Build Applications

With the rapid development of computer network technologies and distributed computing technologies, geographic information systems are being migrated to popular, distributed, and web-based geospatial information services. The characteristics of diversity, dynamic, heterogeneity, massive data volume and distribution of geospatial information under Internet environment are challenging the traditional geospatial information services. In particular industry sectors in the national geo-spatial information systems within the building, often showing a wide area network within the regional horizontal and vertical multilevel management across the loose distribution. In order to effectively combine these resources to achieve integrated management and use, to avoid duplication caused by the waste of resources, the urgent need for these loose distribution network of geospatial information resources in an effective organization to construct a multisource spatial information Organizing and Distributing platform, and the platform can be formed on the basis of a development framework for rapid application development.In this paper, it include that Organizing and Distributing spatial data from multiple sources, cache, data display, building the platform of Organizing and Distributing focus on four aspects of the study, the main contents include:For realizing the massive rasterized geospatial data storage and manage, this research discusses a theory of Loose Architecture of Multi-level Massive Geospatial Data Based on Virtual Quadtree, Managing the spatial raster data is distrubuted in the Wide Area Network(WAN) by QuadServer.This paper is applied GeoBeans IMS to management the geo-spatial data. It put the differences in shielding the back-end database, and providing a unified development interface to developers.In the course of this study, using the characteristics of cache technologics, had cached on both client and server side. In the technology of Map-Display in the client, this research select Applet and Flash to display map as GIS client, and provide a series of SDK for development.Practice the above techniques to study the multi-source spatial information organization technology road construction after the release platform, combined with SpringSide understanding, based on the proposed multi-source spatial information Organizing and distributing platform construction method. And increase the efficiency of development GIS application base on this platform.In this paper, it has a detailed description of the key technology of multi-source spatial data Organizing and distributing. Based on the Java EE development framework, B / S structure and WebGIS study, based on loosely coupled ideas, build maps based on loosely coupled multi-source Organizing and distributing spatial information platform, and Implementation of the multi-source spatial information organization.