J2ee-based Web Database Application Technology,

In recent ten years, computer network develops rapidly. Network exists everywhere in society. Web is the hot spot, which interests people to develop and research. Web presents people with friendly and convenient user interface. But it can't complete large-scale enterprise computing. The main problem is that system requires HTTP and Web Server as agency to correspond the communication of application server and client. This must cause the flux bottleneck that will slower the response speed on Web Server. Presently, the software of network's applications developed all have characteristics, such as singular function, bad flexibility, difficult updating and maintenance, poor expansibility, etc. According to actual research status, this paper present the model of the platform's architecture based the technology of J2EE,which has excellent encapsulation, incompact coupling, high-integration and so on. Thus it greatly enhance the platform's flexibility, strengthen expansibility and maintainability.After research on the J2EE specification and Web application, a construction of Web system with JavaServlet on the base of J2EE specification was developed. If programmers want to invoke the objects, they only need to write the web page. By the contrast with other integration methods, this model will be a more powerful platform for developing web-based J2EE application.Last, this paper designs an distribute system on the Windows platform based on B/S architecture with four layers. The platform also presents the search function of the results and the evaluating function, which cater to the teaching demand.