| Internet economy is undergoing rapid change, people's focus from the original portal and web site traffic into more complex automated electronic transactions. A new way of Web computing - Web services have emerged. As a new generation of Web technology, Web services are part of a service-oriented computing model for the exchange of information on the Internet.Web services technology vision is a worldwide service cooperation, the various application components easily assembled into service network, through the loose coupling between services, creating a dynamic computing platform across multiple organizations and the business processes and agile applications . This made for a Web services technology required that the Web service composition. How to be combined into a single Web service has the appropriate features to complete, reliable, solutions-based business processes, Business Process Execution Language (BPEL) came into being.BPEL is a formal specification for business processes and business interaction protocols, XML-based flow language. As a service composition language, BPEL provides a number of features to ease Web services-based business process modeling and execution, which is the reason for this choice of language BPEL. In this article, detailing the main characteristics and composition of BPEL, BPEL thorough analysis of the concepts and features. In order to study the system framework based on service Solutions to support business organizations to work together, this paper through the use of BPEL and Java are two ways to achieve the same case in the event stream, and then separately from the development, modification and efficiency analysis of three cases of the two language, thus out of the business process definition language defined in the business process on the advantages and disadvantages. Task model proposed a process of dynamic Web service composition methods. Sample through the purchase order process to implement the methods and interpretation. |
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