工程图学习题库远程共享研究

Discussions on Long-Distance Sharing of Engineering Drawing Exercises

土建制图的远程教育软件在作图练习方面提出了特殊的需求,从而引出了把作图习题库放在网络图形平台上共享的设计方案和实现方法,以及结合实例的详细介绍。在开发中,习题库的网络通讯设计采用的是服务器/客户机模式和套接字技术。但Java技术特殊的安全机制(沙箱模型)给方案交互性的实现增加了困难,因此,需要特别讨论有关的网络安全问题和现有可行方案的利弊。

Online drawing exercise is part of civil engineering drawing and computer graphics online courses. This kind of exercise requires an online exercise database so that students can share the resource through an online graphics software. When working out this database, server/client model and socket theory based on Java is adopted to achieve online communication. However, Java language has a particular security mechanism which is called sandbox, and it's a tough task to realize fully interactivity in the software. So some existing methods are discussed and compared with one another.