| With the fast development of technology, the scope of enterprise business enlarges from inter-enterprise to the whole Internet. Because of furious competence and fast change of market, workflow management has been brought into the enterprise management. It manages and assigns business-based information and resources in order to improve the enterprise's competition. Web Service-based workflow management invokes and controls business activities to make the communication among the business activities in the Internet easier and more convenient. Based on W3C open protocols and standards such as XML, HTTP etc, Web Service is independent of platform and operating system and offers a sloop and flexible distributed computing model.In this paper, the design and implementation of a workflow management prototype system based on Web Service are stated in detail. First, the actualities of workflow management systems are presented and their shortcomings are pointed out. After two technologies, Web Service technology and currently fashionable distributed object technology, being compared, the reasons of bringing Web Service into WFMS are discussed. Then, the framework of the prototype system and the functional modules are generally introduced.After that, the particulars of the prototype system developed by author are described in detail. There include that the implementation of the workflow modeling platform, model check rules, the description language for web service flow based on BPEL4WS and the communication protocol among web services. An instance business flow running on the platform is presented as an example. Finally the prototype system is evaluated, the advantages are analyzed and the future work is simply discussed. |
