The Research And Realization Of Web GIS Based On Mapxtreme

Web GIS is a hotspot during GIS development currently, and it is a new technology which extends and consummates Geographical Information System using internet technology. Its core technology is to embed the HTTP and TCP/IP standard into Geographical Information System and accomplish manage the spatial information in the environment of internet and other function of Geographical Information System.This article starts with the affection of internet on GIS , introduces the conception and basic principle of Web GIS firstly, then dissertates the methods of developing Web GIS such as CGI?IS API?Plug-in?ActiveX? Java ect and the main platform of Web GIS in detail relatively, and it emphasis on introducing the structure of MapXtreme for java.At last, the article introduces a client application named CSU_WEB GIS1.0 which is developed by JBuilder using the digital map of the campus of Central South University based on the platform of MapXtreme for java. The application uses Java Applet as the core and combines the API provided by MapXtreme for java to issue the digital map on the web. CSU_WEB GIS1.0 has finished some basic function of the map such as zoom in,zoom out, pan ect, and some advanced function such as spatialquery, navigation ect.And it has been tested the issue of the digital map on the web in the machine, the result is as the expected.