Research Of Distribute EJB Based On Campus Certificate System

With the development of the network technology and the e-busniess,2 layers structure can not fit for situation. N layers structures was create among those structures ,J2EE which made by SUN company was in advance on some aspects such as development ,multi-platform ,security ,maturity and production on distribute component technology. As the BEA's WebLogic , IBM's WebSphere and Sybase's New Era application severs were created, More and More developments and applications went to this field.EJB components system which make the rules of how to develop and deploy logic component on the servers was the core of the J2EE structure. Through the EJB, the application developer can provide complex enterprise characters to middle wares without consume energy to handle the lower problem which made by distribute service. Application servers provide the event-handing, security, resource shared, exist period management and synchronism service for EJB.In order to improve the effective of the management on campus, offer the ease and quick services for students, we designed and developed a campus certificate handling system. This system united single student and enterprise counting, and express the technique advance and characters of the EJB.What is more, we also discussed the advantage, disadvantage and conditions of different structures. And discussed how to let the distribute middle ware more effective.