分布式ESB中介消息机制的设计与实现论文.doc

 PAGE \* MERGEFORMAT 45 分布式ESB中介消息机制的设计与实现 Design Implementation of Mediated Messaging Mechanism in Distributed ESB 摘 要 随着企业应用系统规模的扩大以及业务流程的复杂化，传统的企业应用集成（Enterprise Application Integration）技术很难满足企业发展的需要，需要一个灵活的、可扩展的、低成本的底层框架来实现业务的整合。面向服务的体系架构（SOA）具有松耦合、异步的特点，为实现上述业务整合框架提供了良好的解决方案。企业服务总线（Enterprise Service Bus, ESB）是SOA的核心，是新一代EAI平台，Sun公司发布Java业务集成（JBI）规范则为ESB提供具体的实现标准。 JTang Synergy是在国家支撑计划、浙江省重大科技攻关项目的支持下研制的成果，是一个遵循JBI规范的全分布式的企业服务总线产品。论文主要研究JTang Synergy的中介消息机制。针对服务描述、消息规范化、消息交换模式、服务选择和消息底层传递机制五项关键技术，分别提出了具体的解决方案或实现算法（具体是什么。。。。。。）。然后采用面向对象的方法设计并实现JTang Synergy中介消息功能模块。 最后，通过性能测试将JTang Synergy的中介消息机制与同类ESB产品ServiceMix的消息机制进行对比，总结JTang Synergy中介消息机制的优点和不足。 关键词：企业服务总线，面向服务体系架构、Java业务集成，中介消息机制  Abstract As the enterprise computing has grown enormously and the business processes has become more and more complicated, the traditional enterprise application integration technologies now do not satisfy the requirements of the enterprise development. To remain competitive and rapidly respond to the changeful market conditions, organizations need a flexible, extensible and lower cost framework to achieve business integration. The terms of Service-Oriented Architecture (SOA) and Enterprise Service Bus (ESB) are brought up just for the framework. And the Java Business Integration (JBI) published by Sun Co. provides a standard for the implementation of ESB. JTang Synergy is a JBI compliant distributed ESB product. This paper is focus on the mediated messaging mechanism of the JTang Synergy. For each of the five key technologies: service description, message normalization, message exchange patterns services routing and message delivery mechanism, we provided a solution or an algorithm. And then, we used the object-oriented method to design and implement this mediated messaging mechanism model. At last, we compared the mediated messaging mechanism of the JTang Synergy to the messaging mechanism of the analogous ESB product — ServiceMix according to the result of the