现代电子技术

早在十年前,Gartner Group就提出了面向服务软件体系架构概念。但是传统SOA(Service Oriented Architecture)的实现采用的都是一种紧耦合、非通用的接口设计,无法满足跨企业的分布式系统的信息共享,无法使软件得到最大限度的重用,不能实现实时系统,因而一直没有得到很好的应用。随着W3C对Web Service的协议的规范化以及IBM,Microsoft,SUN等国际顶级IT大公司联合制定规范和服务支持,Web Service技术日趋成熟化。Web Service采用了一种面向服务(SOA)的开放的、松耦合的架构,所有协议都是基于XML具有通用性,并且实现简单。因此,Web Service给SOA软件体系架构带来了新的契机。深入剖析了传统SOA架构技术和Web Service的原理、实现机制,并且分析了基于Web服务的SOA的实现,描述了基于Web服务的SOA的通信结构和实现层次结构。

Ten years ago, Gartner Group has put forward the conception of SOA (Service Oriented Architecture). But traditional SOA was implemented with a tight couple and not universal interface. So traditional SOA doesn′t satisfy the demand of the information shared by distributed systems spanned enterprises and software reuse. It didn′t realize the on-demand system. Thus until now, SOA isn′t applied aboard. With the Web Service specifications standardized by W3C and big international IT Co.′s service sustainment, such as IBM, Microsoft, SUN…. Web Service become more and more mature and is the hottest technology in distributed application program developments. And Web service adopts a Service Oriented, open and loose couple architecture. All the specifications based on general XML (eXtensible Markup Language). More important its implementation is very simple. Hence, it brings new chance to SOA. This paper analyses the tradition application of SOA and principles of Web Service. Then it puts forward Web Servicebased SOA. Next, the paper discusses the implementation of Web Servicebased SOA and it′s communication structure and layers.