Studies On JCA-Based Enterprise Application Integration And Its Implementation

Enterprise Information System (EIS) is an application or a enterprise system provide seivice for an enterprise.Because most EISs were developed in different time or faced to different demand, their interfaces are relatively independent, have little interchange with other applications, and were mostly used in local department. It made information islands in enterprise. How to keep the investment and make the information islands work together is the key question in nowadays' application.The appearance of Enterprise Application Integration (EAI) provided a solution to this question and make islated EISs have possible to work together. EAI is to join up business procedures, applications, hardware and standards, integrate them on two or more EISs, make them as a whole one to do business process and share informations, then increase enterprises' effetioncy, to provide flexible business service to customers. EAI can be devided into inbound integration and outbound integration. In the facet of integration depth, it can be devided into data integration, application integration, and business procedure integration. In nowadays, popular EAI is based on message middleware, distributed middleware or XML.The J2EE Connector Architecture in J2EE framework is a strong supplement to existence EAI technology. Its appearance simplified the complexity of integration, EIS vendors don't need to customize product to every application server, and application server which observe this architecture doesn't need to add specific code for new EISs. Because application server and resource adapter can provide service of transaction, security and connection, the application component doesn't to concern about those system detail, developer only focus on business logic, so this architecture simplified development of applications.After relatively intensive analysis to the actuality of isolated enterprise information systems, the thesis compared several existing technology of enterprise application integration, raised a solution of enterprise application integration by using J2EE connector architecture, designed an configurable and transplantable resource adapter on this foundation, and successfully actualized connection and calling to the resource adapter in the system, completed application integration to the systems.