Research And Application Of LAN Integrated System Based On Web Services

With the development of computer network, various kinds of application systems are implemented in the campus LAN. Those application systems fit the requirements of school's office business. But with the developing business and increasing resources, a new kind of management model is needed to integrate the resources of different application systems to be an integration platform. At the same time, the management information in Intranet will be needed to combine with other management information from Internet to realize the electronic communication platform which would be working more efficiently. Those resources of heterogeneity system would be integrated by using the Web Services technology as the EAI (Enterprise Application Integration) base of LAN applications.There are two difficulties to resolve in the process of EAI operation. One is how to realize the single-sign-on authentication when coding with one application system to another, because every system has its own custom system and authentication model. Another is how to transform the application to corresponding web service, then publish and search those services. With the experiences of developing the OA (Office Automation) system for research group, there are difficulties of autocalling data between systems. A method of trust agent is put forward in this paper. The key method is the design of the authentication service and the linking method of correlative accounts based on Web Services to ensure the security and trust problem in the process of single-sign-on authentication. The method of designing LAN integrated system by using private UDDI (Universal Description, Discovery and Integration) is put forward too. The problem of repeatedly logining when switching between different applications is resolved and the function of cross platform data calling which could make full use of resources is realized.Based on the analysis of running effect between the OA systems which are independent design, the integrated resources management system based on Web Services has the traits of cross platform, extending easily, and high level of security that fits the requirement of integrated office business system.