java基于java的网络教学通信系统.docVIP

摘 要 随着互联网的飞速发展，知识经济初见端倪，人才竞争日益激烈，社会的进步对教育提出了新的要求，也为教育工作者满足这些需求提供了新的工具。网络教育这种新式工具越来越普遍运用于现代教育中，推动着教育体制走向新方向。 本文主要是围绕研究现代网络教育技术的开发而展开的。文中共设计了五个功能模块。分别为实时教学模块，文件下载模块，文件上传模块，文本编辑器模块和个人通信录模块。其中实时教学模块用到了IP组播技术，用于组播组内文字、图片的传送。为了解决批量传输文件的功能，文中用到FTP文件传输。FTP是Internet上使用非常广泛的一种通讯协议，可以完成文件的上传和文件的下载。最后，为了辅助教学中文本的编辑，本文还扩展了文本编辑器和个人通信录模块，可以方便组播组内用户对文本的编辑以及对组播组内成员信息的记录。 本文系统设计完成后，进行了初步的测试，系统基本可以实现预期的目标。在总结本体系设计后，对基于Java的网络教学系统作了整体的探讨。 ABSTRACT Along with Internet develops rapidly, the knowledge economy is just beginning, talent competition creases fiercely, the progress of the society also puts forward new requirements for education, and provides a new tool to meet these requirements. Network education is used more and more commonly in the modern education, to promote the education system to a new direction. This paper is mainly on modern education technology. It has 5 function parts: Real-time teaching module, download file module, file upload module, the text editor module and personal communication recording module. IP multicast technique is used in the Real-time teaching modules to send words and pictures in the multicast groups. In order to solve the problem of sending the batch files, it uses FTP to transmit files. FTP is a very common communication protocols in Internet, which can upload and download files. Finally, in order to assist the text editor, this paper also expands the text editor module and personal communication module. So it is easy to editor text and record the information of the members who is in the multicast groups. After the completion of basic system, this system can realize the desired objectives. In summary, it researches the whole system which is based on Java and designed on the network teaching. Keywords: The network teaching, IP multicast, FTP 目 录 第1章 引言 1 1.1网络教学系统概述 1 1.1.1 网络教学系统的意义 1 1.1.2网络教学系统发展历史 2 1.2关键技术简介 3 1.2.1 IP技术简介 3 1.2.2 FTP技术简介 6 第2章 系统分析 8 2.1本课题的设计目标与分析 8 2.1.1系统的特点分析 8 2.1.2系统的设计目标 9 2.1.3系统的可行性分析 9 2.2