| With the development of the computer technology, network communication technology and the earth space technology, WebGIS is becoming a popular information tool, more and more websites offer space data services. But we have to face such a reality: It is very difficult to visit, deal with distribute magnanimity space datum in web through browser. Because the reasons of enterprise policy and data safety, the space resource mostly exist in specific GIS systems or tabletop applications, doing things in their own way and close relatively, thus the detached space information islands are formed. It is difficult to meet the need of the sharing of space information on Internet. Traditional three-ply WebGIS model and subsequent distributed WebGIS model based on the middle part is powerless to solve the operation each other and data integration etc between isomerous systems on the platform of open geographical information service.XML has obvious advantage in complicated digital coding and exchanging with information; it is an effective way to solve the subject matter that WebGIS faces. Web Services is another brand-new technology to set up distributed systems in the internet environment. WebGIS based on Web Services has characteristics of distributed, capable of operation each other, being convenient to integrate. It is a trend of WebGIS. The thesis focuses on exploring the new network technology of XML and Web Services, and studying the application in the field of GIS based one the both, then proposes constructing a WebGIS platform with Web Services. |
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