Implement Mechanism Of WebService Composition And Encapsulation Based On PetALS

With the continuing popularity and development of Web services technology, many web service components based on different platforms and languages quickly emerged. SOA based on web service has become the new development direction of enterprise computing. Enterprise Service Bus is the key technology of SOA architecture, which provides a basic architecture for service oriented system. Different applications of SOA system interact with each other through ESB. How to use the existing web services on the ESB, and combine web services so as to provide seamless integration of new function services, becoming a concern. This paper discuss the management and combination technology of web services for service system, based on Enterprise Service Bus and Service Oriented Architecture.First, in this paper, we introduce PEtALS which is an open-source enterprise service bus, and analyse the architecture and environment, and describe service engines that support, and explain the application development model based on PEtALS.Secondly, different services provided by different providers may do the same task, and these services are equivalent in function. In the combination of services stage they are interchangeable. In order to uniform treatment of similar web services, the concept of standard webservice is proposed, and the realization method is given. In order to be able to better evaluate the quality of services, service system needs to collecting the parameters of all aspects of the service work. This paper presents a method of web service re-encapsulation based on PEtALS.In addition, In order to reuse the web services on the bus, web service combination model based on PEtALS is proposed, combine web services using a variety of Enterprise Integration Patterns on the Enterprise Service Bus. A description method of composite services is given. Implement of service combination method and call method is detailed described.Finally, customer data management system based on PEtALS is introduced, which verify the practicability of this study.