Web Service-based Distributed Workflow Applications

With the information-based advancing steps of our country and therapid development of internet technology, The E-government becomes oneof the most important fields of current information-based. ThoughE-government technology enters E-government and serves systematic stageat present, but the present E-government is constructed in one differently,in autonomy, environment distributed, cause, should cut apart and breakin coordination with identical intact business course artificially, haveformed "detached islands of information". It must promote in coordinationwith the E-government to want very good difficult problem that theE-government faces at present of. Inter-enterprise distributed workflowtechnique is of great importance in the current enterprise computerapplications.Domestic to distributed workflow until research among business toomany, based on J2EE mainly and CORBA platform come, launch. Though on thebasis of these two kind platform the distributed workflow can solve byE-government at present to a certain extent in coordination with problem,But they realize to work in coordination with department only mostly, cannot realize different department, different unified procedure toconstruct platform customize and mutual. Web Service as one new based onstandard application integrated way, have good security, interaction,step platform several of advantages, can well overcome the deficiency oftradition distributed workflow.The problem of the E-Government and the shortcomings of the maindistributed technique (Java RMI, CORBA) are analyzed in here. On the basicof Web service architectures, The component model and architecture of theWeb Service based distributed workflow management system are introducedin this thesis. The component model and architecture of the Web Servicesbased distributed workflow management system are illustrated. Solutions to some key problems such as dynamic bind, transfer arithmetic and interface of engine are also presented here. Finally On the basis of IBM Web sphere and systematic package model and system structure provided according to the front, This paper design the prototype of DWFMS(TMFlow) based on studying the platform Web Service. Indicating through the implementation of E-government platform in Guangzhou, The Web Services based distributed WfMS implements can solve the problem of the E-Government, It not only the distribution of the functional components of system and the distributed enactment of workflow engines, but also a higher-level distribution of the workflow process model.