| Today’s GIS-based application has been widely used in many fields such as managing a forest,managing a city, routing vehicles. Parallel development of commercial and non-commercial GIS, with different features. So there are a lot of technology and software to build a GIS based application, and face the difficult to establishment of a GIS application with the large costs, how to the use of new technology development a GIS and reduce the difficulty of development and the development cost is a question worth considering in practice. In GIS open source filed, open source GIS software is a good choice.In this paper, the object is study the open-source Web GIS software Geomajas, and explore Geomajas the application. Its main tasks are:(1) introduced the latest development status of open source GIS, and describes several commonly used open source GIS development platforms and technologies, such as OpenStreetMap, GeoServer, OpenLayer etc.(2) focused on the OSGeo Web GIS open source project Geomajas, analysis of its internal architecture and key technologies. Rendering Geomajas in principle, as well as in geomajas OGC SLD standard and support for spatial data tools Geotools Geomajas in the data cache and grid technology Infinispan open source technology and has completed Geomajas the Chinese development document translation work.(3) compared Geomajas and other common Web GIS development platform for spatial data editing functions to analyze the characteristics of several popular Web GIS development framework.(4) extended layers plug-in in Geomajas using our world map vector and image loading function of the map tile data.(5) show the detail how to integrate GeoServer and PostGIS in Geomajas framework. And using Geomajas builded a Greenhouse information management system.Finally, on basis this papers of show the lack of this article and follow-up study, It can give a reference and help in the open source GIS applications. |
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