Bpel And Soa-based Web Services Combined Technologies Research And Applications

As a kind of new developing distributed computing model, Web Services has many merits, such as openness, platform independence, reusability and loose coupling, and already plays a more and more important role in fields such as Electronic Commerce, Enterprise Application Integration. However, a single service could only express limited service function, so it could not satisfy the complex business cooperation demand between the enterprises. The aim of service composition technology is to surmount technical and organization's boundary and seamlessly integrate all kinds of services which distributed on WAN's, make the service application constructed rises in value. Now, most academic research about the service composition concentrate on the automatic combination method and the composition frame designing, but the application systems which have used service composition technology in the business environment are not so many.This thesis is concentrated on exploring web services composition technology on services-oriented architecture system for concrete applications, analyzing the question which meets in services-oriented architecture system development with Web service composition technology and proposing the solution. Firstly, This thesis make a detailed introduction to the origin, the basic concept, the composition elements and the characteristic and the superiority of service-oriented architecture, Then, This thesis makes a complete introduction of concept of Web service technology, web services's system structure, and the key technologies, elaborates the relations between Web service and SOA. and then This thesis introduced some knowledge related with BPEL, BPEL is a kind of service composition standard based on service flow arrangement, on the foundation of Web service standard such like WSDL, provide the ability of composing services. Finally, this article introduced in detailed the process of the design and realization of an online claims settlement system of the medical insurance, and has carried on a test to the execution of business procedure.