Research Of Services Discovery Base On SOA In Railway Information Sharing Platform

The purpose of the paper is to choose an appropriate service discovery method using by China Railway Information Platform which should be designed base on SOA. With characteristic of the Railway Information Sharing Platform, the paper presents apropositional way to the issues: Service Oriented Architecture.SOA (Service Oriented Architecture) is one of new architectures to resolve the problems caused by isomerism effectively. The mainly ideology provides with a uniform interface, and provides services for other applications through service publishing, finding and invoking. Web Service technology has provided the important theory support for the development of this system, it makes the realization based on the SOA theory into possibility. After thoroughly analyzing these basic theories,aiming at characteristic of distributed network, this paper expound the research and the application of distributed network based on SOA.The main research is pointing the discovery method base on the SOA, matching the China Railway Information Sharing Platform at the sametime. First, the paper introduces discovery methods which have been researched. It compares the main methods using the classic evaluation theory AHP, and results UDDI the best one for the China Railway Information Sharing Platform. Then it analysis the registry model which defined in the latest UDDI standard, the registry center and client interaction mechanism, then it described the registry's core data structures in detail. Based on the test data management, extend the service register and query on properties and operation, subscription-based renewal mechanism,this paper improved the reliability of the registry. Finally, this paper discusses the UDDI standard Web Services registry's design and implementation, conducted tests on the system, through one use case to illustrate how to use this UDDI Registry.