| Test is the key of e-Learaing key; a good test can better reflect the student's condition and the level of grasping knowledge in the study process. In view of problems that it is unable to realize study object reuse and mutually operation between systems because test question resources in the test system are lack the standard specification. The domestic and foreign scholars have formulated certain related standards one after another.This paper is based "the long-distance education in primary and secondary schools and key technology demonstrations" and "domestic infrastructure software based on the B / S structure multimedia system development and demonstration project " of the fifth science and technology research projects. It major researches the key technology of networks Examination System involved in the process of achieving. We design and implement a network examination system based on the QTI standardized. The architecture used in this system is based on J2EE lightweight structure. The three-tier structure is view layer, business layer and data persistence layer. It is loosely coupled between layers so it is easy to maintain and has a good scalability and flexibility. It can be greatly reduced development costs and the using costs because of using the lightweight open-source framework. So it has great practical significance for promotion of the network examination in the western underdeveloped areas. The storing of item is strictly compliance with IMS QTI standards. So data bank resources in different learning management system, content development systems and resources, such as the interoperability between break distance education, campus network, LAN "resources isolated island" of residents can be shared. XML standard definition supports greater scalability and versatility. Using XMLBeans to analysis XML files, it can map the XML data to the underlying structure of the JavaBean style object. We can use the way to deal with JavaBean to operate XML element. Different networks examination platform, can be imported using local resources data bank by providing the QTI standard XML engine; External data bank can also import data bank of resources, experience with certification for the QTI standardized test into local data bank, so as to continuously expansion of the local data bank. In addition, the import and export data bank of this examination system use IMS CP packaging specifications.The study content conforms to the content packing specification can be exchanged and reused between many applications and the learning environment. The CP specification can make education resources between the different educational institutions sharing, and can reduce resources the expenses of manufacture. |
