Realization Of Web Services Composition System Based On Workflow Template

With the mushroom of the network technology, various services which were able to satisfy all requirements effectively were expected. As a opened business provider, Web Services has already been widely applied in industry and academia. At the same time, the number of Web Service increases greatly in the internet. However, a single Web Service function is limited; it can't complete a complex business, so it's necessary to compose existing Web Services to create a value-added service.A lot of research work for the web service composition has begun around the world. Some of them focus on the problem of the Web Service's matching from the point of the semantic. But it's hard for general user to make an accurate description of the web service semantic. Other of them emphasized the similarity between workflow and web services composition to build composition flow, however finding and matching the web service is researched a little. So how to combine the advantages of both to construct a general web service composition system is a problem worth pondering.This thesis aimed at the problems above, puts forward a new web services composition model based on analyzing and researching the status of the web service composition and related fields; In this model, a description method of the web service and the web service flow based on service grain,function semantic,service parameters is given, some algorithms, used in the service composition, including flow matching algorithm,service publication and flow execution algorithm etc, are proposed; And a web service composition prototype system is realized by the design of the construction and the function modules of the system, at the same time, it is verified by the graduation audit flow of the university. The result of test demonstrates that the system has stable operation, better flexibility and practicality.