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With the development of computer hardware and software technology , the increase in the popularity of Internet technology , and social demand for geographic information and GIS applications increasingly widely , and gradually to the Internet platform to disseminate information , so that the general public can facilitate the access to geographic information benefit from the geographic information industry . Although the combination of Internet and GIS that Web GIS into the IT mainstream , and has been widely used in many aspects of the urban construction , transportation, government, etc. , but the technology is far from mature , map client performance , data transmission , geographic information sharing and interoperability , cross-platform access services is the bottleneck achieved by the sharing of geographic information . To solve the above problem , the introduction of the Web Service concept , summarizes the theory and technology of SOA, Web Service, Mashup, AJAX , and applied to the the network GIS map attribute data asynchronous queries, the system interface and functionality improvements , service interoperability , service polymerization . Web Service as the core technology of the system structure , the use of Web Service - based geographic information sharing model , a geographic information sharing service platform design principles . Enhance the sharing of geographic information geographic information sharing is a service-oriented style . According to the architecture and design principles , this paper NET technologies to develop a prototype of a geographic information sharing system platform . The platform map zoom , roaming , Hawkeye , hierarchical display , thematic maps and asynchronous queries , statistical calculations and other functions . And exploration done in the following aspects : (1 ) based on OGC specifications WMS, WFS services and their management , deployment of cross-platform aggregation service provides easy-to-use interface . (2) Application Mashup platform support , achieve polymerization of functional browser - based service . ( 3 ) application of AJAX technology to achieve the dynamic display of client vector graphics . Finally, the platform needs to be improved as well as the outlook .
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