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基于P2P网络实现Web服务的发布和发现可有效解决集中式方法所带来的单点失败、可扩展性差等问题,因此成为服务计算领域一大研究热点.为进一步提升现有的基于单一P2P网络模型的服务发布和发现方法的效率,本文提出一种面向语义Web服务发现的混合式P2P网络JXord,该网络基于JXTA和Chord协议,采用分层结构,上层利用Chord协议进行管理,下层采用JXTA分组思想.基于JXord进一步提出了语义Web服务发布与发现的实现过程.一系列仿真实验表明该实现方法相比单一网络模型的实现方法在最大跳数、平均条数、查找延迟等性能指标方面均具有明显的提升.
The publishing and discovery of Web services based on P2P network can effectively solve the problems of single point failure and poor scalability brought by the centralized method, which has become a hot research topic in the field of service computing.In order to further improve the existing technologies based on single P2P network This paper proposes a JXord hybrid semantic web service discovery-based P2P network JXTA based on JXTA and Chord protocol, the use of hierarchical structure, the upper management using Chord protocol, the lower use of JXTA packet Based on the JXord further proposed Semantic Web service publishing and discovery process.A series of simulation experiments show that the implementation method compared with a single network model in terms of the maximum number of hops, the average number of items, search delay and other performance indicators have Significant improvement.