Research And Development Of J2ee-based Collaborative Learning System

Along with the fast development of our country's network education, The CSCL has become one of hot topics in the network education studies. Although the network distance learning has acquired much achievement, simultaneously it also has many defects. Firstly, the investigation demonstrated that, all network courses basically has not the cooperated study design. One of network biggest superiority lies in exchanges and communicates. But the mostly network courses only pauses in the theoretical analysis and the elaboration stage in the cooperation study support. How does the CSCL designs and realizes? The CSCL is realized through the network course, or belongs to the platform function? These all are the questions that need to ponder. Secondly,a complete architecture that based on the web teaching platform has not a strict standard now. In domestic many experts and the platform exploiters proposed their own architectures. That Cause difficult in the platform's own promotion. How to solve the problem that the platform's modulation and disassemble in technology also needs to ponder.This article mainly discussed the system concrete performance history as well as the design concept. In the first two chapters it simply introduced the background, tendencies, design environment, rationale and analyzed with emphasis the construction of the student model and the realization of the grouping strategy in the CSCL system. In the latter three chapters. It introduced the design of system, the technology that system used, the main function of system, the realization process of system and so on, In which acts according to the object-oriented development flow to narrate various chapters specifically. In the third chapter, it carried on the analysis of the software design pattern,the CSCL system function structure and the system technology frame. on the side ,it used the UML tools to make the example analyzes, the smooth chart analysis, the state diagram analysis, the kind of diagram analysis and so on. In the fourth chapter, it founded the tables of the relation database and completed the lasting level, the model level, the key-course, the expression level's code compilation in the database table foundation. In this chapter it with emphasis introduced the model level service logic flow as well as the key-course flow control. The technical that the system mainly used is: J2EE, Struts, Hibernate and Network database technology MySql. In the Last chapter, it summarized the mainly completing work in the period, and pointed out the place that still need to improve.