Research Of Web Service Selection Based On QoS

In recent years, Web service gradually becomes the main technology to implement cross-platform system application. But with the great development and widespread application of Web service, a lot of services with the same or similar function appeared on the network, and how to choose a service from these services for users became difficult, therefore, the quality of service (QoS) in the process of Web service selection plays an important role. This paper analyzes each attribute characteristics of QoS, the QoS attributes are classified according to these characteristics, and design QoS aquriring methods according to different kinds, and increasing the real credibility of attribute's value. At the same time, aiming at the service requesters'different demands to service, and considering service providers'interests, the service selection will be divided into individual service selection and combination service selection, design a kind of Web services selection framework based on QoS, and put forward a kind of services selection strategy, obtain QoS parameters from extended WSDL, expand composability in service attributes, and define a key attribute which can identificate a service's field characteristic, thus effectively narrow and accurately limit candidate combination service set. Finally, using two open frameworks(CXF and Spring) to simulation Web service selection frame and strategy, achieves the aim to verify the correctness of the method in practice.