Online Marking System Design Based On J2ee Architecture And Realization

With the fast development of network technology, computer technology, digitized information technology,image processing technology, Marking online System based on the network appeared in recent years. Now education examination requires more on creativity and practice capability of thecandidates, and provides more subjective questions than objective ones. However, as the grading for subjective questions can be affected by many factors, justice may not be assured. Marking Online System store examination papers in the computer through digitizing them, cut apart them and isolate single one. When the teachers go over examination papers that are revealed on computer screen, they can read and score directly them. And under control principle of multi-error, it get final score from Average value of teachers, therefore realizes the justness and fairness.Firstly,this paper shows the advantages of marking-online system and analyses the domestic status of using marking-online system. In view of Guizhou Province online marking system status and its shortcomings, points out that the development of a Guizhou independent intellectual property rights marking-online system is necessary. Secondly,descripes how to build worknet architure and database.The main work done in this paper as fellows:1.Based on system requirement,offers the integrated design,including system frame work based on J2EE multi-layer system structure, function module and database structure.2.Designs and implements marking function module of subjective item with various design patterns.In Statistic and analysis module,we inprove the algorithms to get better performance.3.In order to make sure the safty and reliability of data,use RAID10 technology in disk, and config web server as a cluster.finally, we optimize database server using connection pool.