Based on ontology theory and methodology of service interface matching, a dynamic geo spatial Web service composition method based on semantic interface matching is proposed. In this method, Web service is abstracted as entity with semantic input and output interface. Service dynamic composition is realized by interface matching. This paper proposes dynamic geo - spatial Web service composition framework and implement solution for both syntax interface matching and semantic inter face matching. On the premise of both service composition feasibility and reliability, service dynamic composition is realized by two level interface matching: syntax matching and semantic matching. Based on methodology mentioned above, a prototype geo - spatial Web service dynamic composition system is realized. According to the test, the result of Web service composition is satisfied.%根据接口匹配和语义本体的思想,提出一种基于语义接口匹配的地理信息Web服务动态组合方法.该方法通过把服务抽象为带有语义信息的输入输出接口的实体,利用接口间的语义匹配实现地理信息服务动态组合.并给出了基于语义接口匹配的地理信息Web服务动态组合框架,以及相应的接口参数匹配和语义匹配的解决方案,提出从参数和语义两个角度对接口可匹配性进行判断,在保证链接服务的可行性与可靠性前提下,达到动态服务组合.最后,实现了一个动态服务组合原型系统,测试验证所提出的动态服务组合方法.
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