Research Of Web Services Model Based On P2P

Web services are the new hotspot of present Internet development. Many enterprises coming from different domain join together to study its use and development, and several enterprises at the leadership position are developing platform to support this architecture, and the relative products are being promoted one after another. The Web Service technology regarded as the expand of CORBA, EJB and COM will certainly have more widespread and valuable application prospect. The Web services technology will also change the development, the issue and the use method of next generation software. Researchers and the application developers attach importance to its value of opening, simpleness, crossing platform and integration at low cost.But in traditional Web services architecture, service publication and discovery are still based on a centralized server. UDDI is a bottle-neck in the architecture. If UDDI is disabled, the architecture will be failed. In P2P network model, all nodes, clients as well as servers, are peer. We consider the combination of P2P and Web services will solve these problems in the architecture.This thesis introduces the architecture of web services based on P2P, and puts forward three kinds of models of web services based on P2P, then elaborates how to publish services, find services, append node anddelete node in these models, analyses and compares the performance of the three models, points out respective applicable scope. Finally we compares the web services based on P2P with the traditional web services, points out the predominance of web service based on P2P , and give an expectation of the future and tendency for web services based on P2P.