基于BPEL和QoS的动态Web服务组合框架研究  

Research on Dynamic Web Services Composition Based on BPEL and QoS

作　　者：张文博[1] 史维峰[1] 

机构地区：[1]西北大学信息科学与技术学院,陕西西安710127

出　　处：《计算机技术与发展》2009年第11期72-75,共4页Computer Technology and Development

基　　金：国家高技术研究发展计划(863)项目(2007AA010305)

摘　　要：利用BPEL语言可以将单独的Web服务组合成复杂的业务流程,但是BPEL语言不支持在业务流程执行阶段进行修改操作。虽然BPEL语言有错误处理和补偿机制,但是如果业务流程不能继续执行就会影响到业务执行效率。针对这一问题,提出了基于BPEL和QoS的动态Web服务组合框架,利用QoS组件的动态绑定功能和UDDI的动态发现Web服务功能,实现在业务流程运行时动态选择Web服务的功能,从而提高业务流程的执行效率。By using BPEL,Web services can be composed into complex business processes. However,the BPEL does not support modifying Web services during the execution of business processes. Although the BPEL has fault handling and compensation mechanisms, the efficiency of business process execution will he affected if the business process could not he continued. In order to solve this problem,give a dynamic Web services composition framework based on the BPEL and QoS. By using the dynamic binding function of QoS components and the dynamic UDDI discovery of Web service, the business process runtime dynamic selection of Web service will be realized, and the efficiency in the execution of business processes will he improved as well

关 键 词：BPEL QOS 动态 WEB服务组合 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]