Study On Enterprise Application Integration Framework Combining Web Services And J2EE

As more IT systems are put in practice in the enterprises, they are used in more areas of the enterprise, and the enterprises focus more on the Business Process Oriented problems, EAI (Enterprise Application Integration) has become a very complicated problem that the enterprises have to face and solve. As traditional solutions have a lot of defect in design, development, maintenance and use, especially they can not provide a whole framework for heterogeneous distributed systems within an enterprise and make all systems work together smoothly, Web Services has become a focus in current IT area. Its main objective is to construct a technology layer that is independent of platform or programming language on the basis of various kinds of different existing platforms. The applications on all kinds of platform rely on this technology layer implement the mutual connection and integration.Aiming at the problems in EAI based on Web Services, such as too much entering to the legacy systems leads to huge workload in system Integration and frequent data transformation produces the possibility of losing data, this thesis put forward a EAI framework combining J2EE and Web Services. This framework uses the J2EE connector architecture to implement the integration of the current applications and the legacy heterogeneous infrastructure resource. It also makes use of the advantages of Web Services to carry through the Service Oriented integration at the higher hierarchy, and implement the business process integration based on Web Services. Moreover, the framework has natural compatibility to integrate J2EE applications.After Web Services technology and the foundational principles of J2EE connector architecture are introduced briefly, an EAI framework model combining J2EE and Web Services is put forward. Then, the design and implementation of the framework are analysed in detail, including: 1. Design and development process of the integration framework based on J2EE connector architecture is introduced in detail. This framework has been applied in the J2EE application server Jboss successfully. It provides a unified connection method relating to client application component, J2EE container and heterogeneous EIS resource. 2. Multiple design patterns are used to make the resource adatper we develop can fit into other J2EE application servers that accord with JCA standards, by changing the configuration simply. 3. How to use technologies of J2EE framework to develop Web Services on J2EE platform is clarified.