WebGIS Key Technology And Application And Development Based On MapXtreme

The development of WebGIS is importance development direction of GIS, but the data format multiformity of WebGIS can not realize manipulate each other and embarrass the development WebGIS.So the development require that WebGIS not only have the feature of manipulate each other but also have the characteristic of transplanting expanding and strideing flat roof.In this paper, in allusion to how to integration and syncretize different data format spatial data and realize isomerous spatial data share and interoperability, based criterion that was publicized by Open GIS Consortium based on XML spatial information, introduce GML and XML ,describe and define GIS spatial element in GML criterion,establish land and house spatial vector data model document , and developing a mapping browse and query system, discuss the WebGIS modelbased on GML in J2EE architecture and technology schemePenman designed a WebGIS system in allusion to popularity at present J2EE system, the paper expatiate approach and applied pattern implementing WebGIS based J2EE techonoly ,studied and discussed the key technology, and then empolder a speedway integration geography information system based J2EE architecture utilized MapXtreme for java module.