Research And Implemenation Of Web Services Discovery And Invocation

Enterprise Service Bus eliminates the technical differences between different applications. It integrates them in the form of services. With the increasing number of services, it is highly necessary to provide a mechanism of effective services discovery. Most of the current Web services discovery technologies involve little introduction of how to build the effective services semantic information. And they are usually based on a central registry service, which made them can not provide the dynamic distributed services discovery. Furthermore, the services discovery engine only meets the demand of getting proper services, there is no support for the services invocation.This paper proposes an integrated solution of services discovery and invocation which is based on existing mature technologies. For service discovery, it utilizes the semantic information extraction technology in natural language processing to get core services function description, and it adds the services context and the services quality information to help to find more relevant services. This meets non-functional services discovery demand. For services invocation, it provides the services invocation in two ways. One is explicit which is useful for the users to call services by html page. The other provides a services invocation API to enable the users to invoke the services like local methods, what they do is just adding the auto-generated code in their own applications.Experiments show that the solution presented in this paper is able to find services effectively and it meets the demand of distributed service discovery. It also provides powerful support for services invocation.