基于AOP的Web服务组合容错模型

摘要

To deal with Failure classification and code winding,a fault-tolerant model of web service composition based on aspect oriented programming is proposed.Firstly,fault reasons at all stage of Web services during execution are analyzed and classified,appropriate fault-tolerant strategies are presented,and web service composition model are built based on separation-of-concerns.Business function and quality of service are ensured,while function concerns and fault-tolerant concerns are separated.Finally,a case study of setup planning is presented to verify the feasibility of the method.%为了解决现有Web服务组合容错方案中功能性代码与容错处理代码缠绕问题,提出了基于AOP的Web服务组合容错模型.对Web服务组合执行过程的各阶段失效原因进行了分析和归类,给出了相应的容错处理策略；基于AOP横切关注点分离的思想,构建了Web服务组合容错模型,保障执行过程中业务功能和服务质量的同时,实现了容错关注点与功能关注点的分离.通过实例分析,验证了该模型的可行性和有效性.