Research Enterprise Application Integration Implemented By Web Services

Nowadays, with the increasing amount of enterprise application and the rapid demand of enterprise information construction, most departments of enterprises have established their own application systems based on their special functions and demands. Because there are many factors in the process of enterprise information construction, these application systems are different in development language, deployment platform, communication protocols and so on, most of them are boundary-clear, poor interactive and independently, which lead to many " isolated information island". Nowadays, drastic competitions and increasing businesses urgently need to eliminate these "isolated information island" and integrate these systems in a whole enterprise environment, so that they can cooperate with each other, share information and business processes.Recently, Enterprise Application Integration ("EAI" for short) has become a hot spot in enterprise information systems. However, traditional EAI methods usually integrate applications by peer to peer, which has many deficiencies,such as poor ability of integration, poor extensibility, poor interoperability and high cost in integration, they are already not adapt to the rapid increase in the enterprise information systems. Web Services is a technology platform for building interoperable and distributed application programs, it provides a sequence of standards and defines criterions how to interoperate in Web[1]. Based on XML and SOAP, Web Services have a series of advantages, such as excellent interoperability,good encapsulation,integrative and platform dependently. Web Services is a service-oriented architecture, it indeed realized the independence of platform and language. Using Web Services in implementing of EAI has become a mainstream and the first choice for many companies.Passing analyzing some traditional and representative enterprise application systems,combining the project of IBM: The employee's learning and career development platform of Shanghai Mobile("ELDP" for short), put forward a solution of using Web Services to implement EAI, which emphases on providing reasonable solution solving the problems of security and system performance. Then, put this solution on actual project "ELDP" to realize its design idea. Finally, after running and testing the system, it is proved that the solution is correct and effectively, and give some references for homogeneous enterprise application integration.