Research of the City Common Information Query System Base on ComGIS

ComGIS is the new generation of geographic information system that adapts the software module tidal.In order to improve efficiency and quality in developing GIS software and reduce the nonessential repetition work,it is necessary to develop the GIS system adopting component technology.This paper use Supermap Objects of Supermap Company to develop the common information query system of Xuzhou.The paper starts from component technology and describes the development model of component-based GIS software development method by combining component technology with GIS technology.The common information query system of Xuzhou can not only achieve an electronic map browser,as information inquiries and other basic functions,but also for the special analysis.It can provide the useful information for the users.