The Research And Implementation Of Network Testing System Based On J2EE

With the rapid development of internet and computer technology, today the demand of talents becomes very urgent. Various training exams, certificates exams, and entrance exams emerge numerously. The traditional paper exam form can't satisfy the demand. So the examination through the network to select talents has become an inevitable trend.First, the article specifies aspects of the network testing system, such as requirement, design in totality, design in detail and other key technologies. Then, the thought of genetic algorithm and the mathematical model of genetic algorithm are studied, the algorithm of the intelligent-generating test paper is designed based on the improved genetic algorithm. Finally, about the automatic marking system of subjective questions in the network testing system, the article illustrates two methods to carry it out, such as the algorithm based on the theory of fuzzy mathematics and automatic marking algorithm based on XML.The system uses the advanced technology such as JSP, Servlet, JavaBean, etc. to realize the functions like the item pool management, the paper created manually-automatically, the teachers and examinees' information management, the examining process control, and the inquiry of results of examination. In the system design process, use the JSP and Servlet to handle the user interaction to realize the links, shifts and security among web pages. The JDBC is used to realize the organization of backstage supporter's database. The system adopts B/S structure, uses the JavaBean to encapsulate complex logic data, through the Servlet processing and MVC design to separate show layer from business logic layer.The server system adopts Windows Server 2000, and database platform SQL Server 2000, which is conveniently used, and well scalability, and integrated highly with related software. The client system is based on the web platform, as long as you have a Web browser you can login on exams, which is concisely and easily used. The system uses the J2EE technology to design the user interface, which reflects the Java language platform-independent characteristics and good safety.