Research And Implementation On Work Flow Management System Framework Based On Web Services

Workflow management system is a tool to realize computer-assisted collaboration work, which can realize the automatically management of workflow entirely or partially. The system can realize the computer assistant controlling based on specific customized working process. The application of workflow management system will not only facilitate the standardization of working specification but also benefit the proper distribution of personnel, resources, and the supervision of the working process etc.Web service is a new generation of Web application, and is a kind of software groupware that can be visited through the open Internet protocol, which represents the integration of groupware technology and Web technology. Because of such advantages as open, interoperability, and the language and platform independence, Web service has been the first solution in heterogeneous system integration field.This paper first analyzed the characteristics of the existing workflow management system and the development trend of Web service. Based on the principle and the characteristics of Web service and workflow, the possibility of combining the two techniques are studied. The paper designs and realizes a workflow management system according to the reference model presented by Workflow Management Coalition and a workflow management system architecture based on Web service is put forward. Enterprise activities which are encapsulated into Web service are called and controlled by the workflow management system based on Web service, which make the business activities on the Internet more convenient and improve the flexibility of workflow management system. And through the analyzing on the system's architecture, the function of workflow engine and workflow engine database are designed and realized.Finally, with ERP subsystem being made as the object of realization, this paper uses Microsoft.NET as a platform, and such technological designs as work flow and web service are applied in project management information system. Business flow is got specific from the perspective of work flow, and work process of the system is minutely analyzed and designed, with the realization of the system's function. The integration of work flow and web service into ERP system enhances enterprise's organizing level and work efficiency, and meanwhile boosts the system's capability of being rebuilt and extended, so as to make the system more flexible.