基于AOP的Web服务容错技术研究

为了提供更优质的Web服务，本文提出了基于AOP的Web服务容错模型，使用AOP作为实现服务过程与切面融合的手段，将容错关注点从功能性关注点中分离并织入到Web服务流程中，利用AOP技术将横切关注点与核心关注点统一架构的方法，保证核心模块的高度封装性。本文设计了一个演示系统，综合了地图、天气和查询订票服务，并根据服务的特性构建了主从容错、缓存容错、重试容错、日志容错四种不同容错方式。

Web Services Fault-tolerant Technology Research Based AOP

We put forward the model of Web Services fault-tolerance based on the AOP so as to provide better Web Services. It was used for the entire service implementation procedure and the fusion of sections,detaching fault-tolerant concerns from functional attention and woven into a Web service in the process. The high-level encapsulation of core module is ensured by the AOP,which construct the transverse concerns and core concerns. We designed a demonstration system,composed of the service of maps,weather and booking query. According to the characteristics of service,four ways of fault-tolerance are set up,including master-slave model,cache,retry model and logging.