The design and implementation of GIS applications based on SOA

With the rapid development of network technologies, SOA (Service Oriented Architecture), which is a methodology of constructing the enterprise distributed software systems, has been widely used nowadays. In this paper we discussed mainly about how to construct a traditional GIS application with the related technologies of SOA. First, we explained the two key problems about module reuse in GIS: encapsulation and combination, and the issues which haven't been addressed till now. Next, we described some simple situations of applying SOA in GIS. At last, we showed PKUMAP, which is a light weighted WebGIS application, using the kernel technologies of SOA, such as SCA, BPEL and so on.