Research Of The Network E-map System Based On WebGIS

The development of WebGIS is closely integrated with the development of GIS technology and information technology. Nowadays, the development of WebGIS is great impacted by GIS technology and the very popular technology in the field of information technology including object-oriented technology, component-based development technology, geography information interoperability, distributed computing, metadata. WebGIS is facing new opportunities and challenges.With the development of the information society of computer technology, geographic information technology, multimedia technology and modern communications technology, and along with enlarging of human activities in space and expanding of the increasing speed of response to the information needs, electronic maps are playing an increasingly important role, and electronic map can rapidly run into the millions of households and a wide range of areas of national economic construction through all kinds of photonics and communications technology, and computer information processing technology enables people to use electronic map more convenient and direct. The development of network technology provides a vast world for electronic maps, making the scope of application increasingly broad.This paper introduced the general situation about WebGIS and its main method, and compares the current popular WebGIS products. As a result, we make a conclusion that ArcGIS Server supports all major server platforms, Web server and client browser, especially, ArcGIS Server9.2 integrates ArcSDE technology, supporting all current development environment (.NET, Java, COM, C++).This paper introduces the architectures and characteristics of ArcGIS Serve, because the research is constructed based on ArcGIS Server. In order to explore the application of WebGIS, we do a study for the design of network E-map based on WebGIS connected with reality.Firstly, we adopt three-tier structure model for Shaanxi Provincial E-map, and divide the whole system into the client browser, WebGIS site applications and data services. Electronic maps of Shaanxi Province are closely related to the construction of basic geographic information database of Shaanxi Province, in order to achieve demanding elements, we construct attribute database for electronic map. Secondly, in order to provide application services of electronic map even better, improve the concurrent visit efficiency of system, ensure data security and satisfy the future expansion needs, it need to establish the Shaanxi Provincial electronic map application services database. At last, we use Web2.0 technology to design page and develop function for the system. We adopt CSS + DIV model whose structure separates from performance instead of form layout; we implement client user interface with Ajax approach which has a better using experience, and then, we can make a independent site about network electronic map system which has a perfect functions, a stable system and a better interface with unified style.