【作者】 王伟；

【导师】 高世臣；

【作者基本信息】 中国地质大学（北京） ， 计算机应用技术， 2008， 硕士

【摘要】 远程教育是将计算机多媒体和Internet技术应用到现代教学领域的一种产物,对我国教育结构的变化产生了重大而又深远的影响。目前国家大力支持远程教育的推广和发展。基于计算机网络的远程教育系统是现代远程教育的发展方向,支持网上教学的远程教育平台在其中占据着重要角色。设计实现安全、易用、高效的工作平台,对网上教学、在线答疑、虚拟试验、实时讨论、协同工作、在线考试和教务管理都是必不可少的。本论文主要探讨了如何构建和实现一个Web应用系统,论文由绪论,需求分析,系统设计,系统实现及总结四部分组成。需求分析章节介绍了远程教育系统的主要功能。从功能上来划分,远程教育系统分为:学习系统和教授系统,其中学习系统是面向各学科学生,为学生提供在线课堂,作业答疑等功能;教授系统是为各学科的教师服务,教师可以使用此系统进行考核测试,在线答疑等。系统设计章节介绍了整个系统的设计思想,包括:系统的体系结构,界面设计,系统的后台设计和数据库设计。系统采用的体系结构是当今最流行的B/S三层体系结构,即:浏览器/Web服务器/数据库服务器。三层体系结构将系统划分为视图层,事务逻辑层,数据存取层三部分,事务逻辑,用户界面,和数据存取完全分离,极大的改善了应用程序的可维护性。系统实现是本论文的重点,详细的介绍了系统中主要功能是如何实现的,系统的界面采用html,javascript和JSP实现,后台的功能模块采用Structs框架,与数据库的连接则是采用JDBC技术。本系统采用了JSP,Structs框架等当今比较流行的各种Web技术,为学生和老师提供了一种新的学习和教学方式,实现了教学手段信息化。更多还原

【Abstract】 Distance learning comes with the computer multimedia and network communications being applying to education. It takes a significant effect on all of the education structure. The government provides the support for the development of distance learning. Distance learning based on Internet is one way of modern education. The basis platform is indispensable for teaching, FAQ, virtual experiment, real time talking, cooperating working, online test, affair manage.The paper mainly discusses how to design and realize a Web application system. The paper is composed of introduction, demand analysis, system design, system realization and so on.The chapter of demand analysis introduces the main function of long-distance Education system. LDES(long-distance Education System) can be divided into two part of the learning subsystem and teaching subsystem according to function. The learning is for students, which provides learning online, downloading courseware and so on. The teaching subsystem is for teacher, which provides testing online, .answering online.The chapter of system design introduces the design thought of the system, including: system structure, interface design, function design and database design. The system adopts the most popular B/S system structure, namely: Browser /web server/database server; B/S divides the system into three layers: The view layer, the business logic layer and the data access layer, and realizes to separate business logic, user interface and data access, which improves the maintance of application system. The chapter of system realization introduces how to realize the system. In general, the view layer uses html javascript to realize; the business logic layer apply structs frame and the data access layer uses jdbc technology .LDES applys very popular technologies such as JSP, Structs, which provides a new learning and teaching way for students and teacher and makes teaching way information-based.更多还原