Based Soa, Web Applications And Dynamic Service Combination Technique

As rapid development of technology and increasing requirement of business,the number fo information systems in every enterprise is continuously increasing.It seems that there is communication problem between these systems,because of differences between development ages,development tools,languages and platform on which system is running,and it makes using a business operation correlated with several systems hard.For example,sending a short message to a certain client relates to CRM system and short message system.What's more,complicated architecture,degree of reusability and compatibility bring people huge problems which they cannot avoid.SOA(Service-Oriented Architecture)provide a new way to solve these problems,and it is are revolution for traditional enterprise application integration(EAI).It is also a function-oriented way of EAI.This way can not only ensure the original data security and logic security of system,but also realize loosely coupled system and it is convinient for reorgnisation and optimization of system process.This paper,started from the core conception of SOA——service,describes the details on conception of service-oriented architecture and function of web service in process of integration.With the analyse and compare of differences between Traditional J2EE Architecture and SOA,the writer find a complete and flexible solution to a series of problems such as integration between new and old systems,cross-platform inter-system communications,developed service registration,dynamic service composition and so on. Properties of integration method based SOA are analized in this paper and solution which is implemented in the remote supervisory control platform of Shanghai SANY Science&Technology Company contents many technology such as esb,developed service registeration,service network,dynamic service composition.Particularly,in the aspect of dynamic service composition and dynamic execution of business process,the writer gives his algorithm and realization.In the aspect of Transaction Processing of business process,the writer realises the compensation service and method of Qos detection in the compensation service.