Soa-based Application Integration Design Studies

With the development of information technology and network technique, various of application systems based on different platforms appear. For enterprise, it is very easy to fall into the confusion of interlacing with many application systems. Information sharing among the application systems based on different platforms is hard to implement, thus, the solitary information island is formed inside enterprise. Integrating the different types of application systems is the best way to eliminate solitary information island at present, because the existing systems can be used continuously and the investment in them can be saved.Aimed at the traditional integration technique's shortages which are tight coupling, bad interactivity and bad extendibility, this thesis introduces SOA (Service-Oriented Architecture) into the studies of application systems integration. It starts with the core technique of SOA and the theory of web service, analyses the demand of service oriented, and discusses the design, exploitation and case realization of SOA. In the part of analysis and design,it summarizes the SOA modelling principle and the service modelling process.In the development part,it designs a SOA lamination construction model and carries on the detailed elaboration to each development service.This core thought of the architecture is using the SOA theory to decompose the enterprise existing information systems into a number of independent coarse granularity web service.Web information integration namely turns between the web service interactive,thus the original information system position and the realization technology are hidden.The web service also may carry on the nimble combination,forms diversified business work flow,satisfies the enterprise along with the need which must change,illuminates the traits of SOA,such as platform independently,extendible and integration easily.Finally, this thesis introduces the SOA project practice about Enterprise Integration Platform construction for Ji Dong Co.,Ltd as an example.