Research And Implementation Of Enterprise Application Integration Based On ESB

The enterprises began to establish management information systems from the 1970s and 1980s, and the investment increased year by year, so that the average enterprise IT systems of many dozens. But the result is high cost of increasingly systems are hard to meet ever-changing internal and external demand. At the same time, with the expansion and competition of modern enterprises, enterprises widely distributed and the cooperation with the upstream and downstream supply chain is gradually strengthened.So that enterprises must solve the problems of information inconsistent, redundancy, and systems of enterprises and partners cannot communicate.Many enterprises proposed a lot of methods to solve those problems, which promoted the borth of enterprise application integration. From each system point-to-point integration at initial to integration based on HUB and component, all those integration methods had a question at finally:that was the costs of maintenance and expansion were both too high.The enterprise application integration put a major step forward with the borth of service oriented architecture. The fundamental purpose of SOA is "reuse" and "interoperability ". The way to achieve "reuse" and " interoperability " of SOA is packaging the enterprise applications to standard and operational services, these services can be reconstructed and reused. Enterprise service bus can provide an open, new mechanism based on the standard.The mechanism can complete the interoperability between coarse-grain applications (services) and other components through simple standard adapter and interface and not change the existing infrastructure to satisfy the integration needs between heterogeneous enterprises environment. This kind of integration can not only help enterprises migrate to SOA, but also to let companies continue to use existing investment and deploy softwares. Besides the systems have the characteristics of weakly coupling, highly maintenance and clearly structure.The paper first describes the enterprise application integration in detail, compares the advantages and disadvantages of traditional enterprise application integration methods. Then discusses the basic concepts and involving technology of SOA systematically and compares the current three methods of realization of SOA, finally selectes the integration solution based on ESB as this paper involved system's integrated solutions. Detailed analysis of the core functions and function sets in the existing literature of ESB, then design a light weight enterprise application integration framework based on ESB after analysis the IBM SOA reference framework. The level of service integration of this integration framework can realize with IBM WebSphere Message Broker(WMB) and IBM WebSphere Service Registry and Repository(WSRR). Finally, reform the cross-bank cash management system architecture refers to the integration framework. Results show that using the framework to integrate cross-bank cash management system can solve the difficult extension, difficult maintenance, low property problems, and have high superiority in increasing access to banking, and processing reengineering.