Research And Implementation Of The J2EE-based Workflow Engine

The workflow is a kind of process that can be auto-executed completely or partially. It is based on a series of pre-defined rules of the process, documents, information and tasks which can be transfered and carried out in different executants. The large-scale application of the workflow system reflects information technology in today's world-building trend. The main purpose of the workflow system is to achieve the high efficiency of business processes and automation through invoking and distributing the information and resource related to the activities. As an important component of the working flow technology, the workflow engine can be considered the workflow management system infrastructure. Only in the support of the workflow engine, the workflow system can be a real value in application.This paper bases on J2EE technology and the workflow standards that is given by WfMC. At first, I have studied the J2EE specification and related technologies, expounded the technical characteristics and advantages of J2EE. And then, I have learned and mastered the reference model that was put forward by WfMC and the model's various functional components and interfaces. After that, I have implemented a lightweight workflow engine using Java,especially emphasized the design principles and the key issues of the design. Finally, the workflow engine is applied to the workflow system which is realized by J2EE. In this system,MVC frame is adopted,and data transfer mode based on XML format is also be used. So, the whole system is characteristic of reliability, scalability, maintainability.