J2ee-based Enterprise Application Integration - (eai)

With the advancement of IT technology and it's building for enterprise, more and more compute system (such as :ERP PDM and CRM) were setup in those companies. Although having many common fields among those system, they have to run independently themselves, without exchange each other, these phenomena is so-called "Information Isolated Island". To change this situation, companies face tow choices: one is to establish a entirely new and large system replacing those old systems; The other is EAI(Enterprise Application Integration).Considering the cost cycle and the possible difficulties during the process, the latter is obviously relatively feasibleNowadays, as main means of Enterprise Integration :One is Microsoft's COM+ system and Windows DNA platform; the other is MicroSystem's EJB standard and J2EE platform. Though both can ,on the whole, meet the requirements from EAI, however, according to openness isomerous-support or transplant,J2EE is preferable. Besides this ,EJB and J2EE also directly adapt to CORBA criterion which allows more easy integration with the old legacy system. Now many EIS supplier ,in order to support EJB and J2EE ,according to standards ,develop their own products compatible with J2EE platform.So ,by right of the newest technology of JAVA, EAI on the platform of J2EE will certainly simplify the difficulty reduce the develop labor and improve the source reusability.In this thesis , I ,based on J2EE , discuss extensible EAI technologies and relations between themselves . And at the end of every chapter I try to give a example for some special EAI technology . All thesis includes following sections:A) What is EAI based on J2EEB) EAI data integration and the involved XMLC) Message agent mechanism in EAID) Reuse exist system through CORBAE) Java integration on the level of enterpriseF) J2EE connector and Interacting with WIN32 COM...