The Research And Application Of MIIS Project Based On Web Service Integration

This thesis is researched based on MIIS(Multi-Information Integration System) information system integration project in Zhixun telecommunication inc.and it try to insolve the insuficient cooperating application capacity of the systems in the company,and to make full use of the advantages of Web Service,such as high loose and coupling ability, easy to expand,good flexibility and dynamically integrating ability,it proposed an integration solution based on Web Service and used this solution to analyse,design and implement MIIS project's integration work.It analysed and solved the difficulties in the clue of the project requirements and the problems in the design and implement period. After reading lots of papers,according to the status of the present information system integration,it pointed out the shortcoming of the present system integration technologies,and based on the condition of enterprise information system integration,newer and higher requirements,and the development of the new technologies,it proposed to use Web Service which is a quite new technology to solve the integration problem of MIIS project.this theis analysed the characteristics of Web Service,and compared to traditional integration methods,such as CORBA,DCOM,and RMI.it introduced the correlative criterions and key technologies of Web Service,and analysed the present four-layer integration model of Web Service and improved upon it according to its shortcomings,and it proposed a six-layers integration model of Web Service,added Service Layer and Service Business Layer based on it and described the two layers detailedly.and then,it combined the new model and MIIS project,emphsized on the Service Layer and Service Business Layer ,to analyse and design MIIS project according to the new model to resole the pratical problems in MIIS.It firstly begined from the analysis of the systems application status and the questions which were urgent to solve,based on the ideas to reuse the present designment to implement the business process integration and correlative automation,and decreased the time and money of integration.this theis discussed the problem of Web Service composition in detail,modeled coorelative businesses in MIIS project using BPEL(Bisiness Process Executive Language),analysed and designed the process of Web Service composition,achieved the purpose to create business process which had new functions from Web Service composition.and this thesis alse analysed the performance problems of systems based on Web Service,and proposed some corresponding efficient improvment methods.At last,it realized to invoke Web Service in MIIS project on .Net and J2EE platform to show the cross-platform and dynamic integration advantages of Web Service.