Research Of Enterprise Legacy System Integration Scheme Based On Java EE Platform

Enterprise application integration (EAI) entails integrating applications and enterprise data sources so that they can easily share business processes and data. Integrating the applications and data sources must be accomplished without requiring significant changes to these existing applications and the data. At present, there are integration schemes have also obtained the widespread application; however, it also lacks the ability to do what we want when facing this openness and integration worse legacy system. How to construct an integration scheme which was effective, integrative, also can offer an opening service system was a difficult problem.Based on the thorough analysis and research on EAI technologies-Web Services and Java Connector Architecture (JCA), and combining with the difficulty of enterprise legacy system integration, the thesis put forward an enterprise legacy system integration scheme based on Java EE platform, which lays JCA integration's mechanism on the back-end of integration scheme, and lays Web Services on the front-end of integration scheme, so that EAI can arrive the require of performance and flexibility. The integration scheme could both make full use of the strong function of the Java EE platform and make business function of system more flexible and operable to user.Full text mainly writes from the following three parts:First, the paper elaborate EAI related contents,layer constitution,each layer technique realization of the complete solution of EAI and the character of EAI implement and the choice of platform.Second, after the analysis of application in EAI between JCA and Web Services, and comparison between them in the enterprise legal system integration, I find the advantage in combining them ,and put forward the integration model of enterprise legacy system based on Java EE application server, and introduce the design thought and the realization of layer technology. The study result include following several aspects:1) The thesis completes technology analysis,design and development process of the integration model .The resource adapter developed has been applied in the Java EE application server JBoss successfully. It provides a unified connection method relating to client application component, Java EE container and heterogeneous enterprise legacy system.2) It follows the Web Services development process of JAX-WS model in fact design, make full use of the characteristic of the Java EE platform to adapt Web Services' change, and simplify encapsulation, release and deployment process of Web Services.3) The thesis put forward a dynamic Web Services Composition Model (D-WSCSM)toward integration layer of Web services, providing the function of dynamicallybinding Web Services and dynamically modifying Web Services and strengthening thebusiness composition ability of Web Services.Finally, the author apply integration model to the practical project of Huaibei Coal Mine Safety Management Information System (HBCMSMIS) to verify the feasibility of integration model put forward in this thesis.