The Research And Application Of Item Bank System Based On REST

With the development of educational informationization to speed up the application of item bank system, every kinds of item bank system had born. Then version is from a single version to C/S structure of LAN version and to B/S structure of the Internet version and to a Agent terminal based on. But these have different problems in these versions of software in varying degrees,such as communication difficulties between different version, the different of information sharing, the more of network consumption,the single form of generatin test paper and so on.It is the key issue of the item bank system that contains supporting for multi terminal,sharing information,low network communication,high efficiency of generating test paper.This paper is based on these problems. First of all,by comparing the traditional SOAP-RPC Web Service services and REST style about the design of software, uses the REST style architecture to solve the problem of multiterminal support system. Then, through the comparison of the current popular algorithm of generating test paper to find insufficiencies, uses the improving generating test paper algorithm to solve the problem of generating efficiency,And the advantages of the improved algorithm are illustrated by comparison experiments. Once again, through the REST style in the HTTP response design, adopts JSON unified data format to solve the problem of information sharing, network communication. Finally, the design and implementation of item bank system based on REST.Through the improved GA accommodation function is as ratio of four parts for the rights(the total score and the proportion of the total time for 9 to 1,the difficulty and the discrimination for 2 to 8),we can get the best effect in the experimental rights about 2:4:2:2,and find the adaptation degree value reduction of fluctuations with the local optimal solution,so remove it.And through about XML and JSON format of method,can get the using JSON format than using XML format for transmission to save more resources for more than 30%, small occupied bandwidth, and spending time in JSON format data than the data in XML format slightly better, at about 8%.