java网络文件传输系统.doc

摘要
当今,迅猛发展,人们可以方便的在互联网上面交流、传输文字、图片、语音、音乐、动画等各种信息。上面的资源共享,其主要意义之一,就是指磁盘文件的传输与共享。现在的FTP基本满足用户需求,但是功能还不是很完善,研究文件传输系统有着很好的前景。
网络上进行信息共享或文件传输,都是基于某种协议而进行的,FTP是人们在网络中进行文件传输普遍采用的一种协议。论文阐述了FTP的工作原理及java网络编程原理,设计了一个基于FTP协议的文件传输系统,使用流行的Java作为系统的开发语言,并采用C/S结构作为文件传输系统的网络结构。系统竭力提供一个安全、透明、快捷的环境来进行文件传输。论文首先介绍了文件传输的基本概念,对JBuilder 2006开发平台和Java语言做了简要说明,然后详细介绍了文件传输的基本原理,最后全面的给出了网络文件传输系统服务器端和客户端的设计、技术特点及实现。
关键词:套接字,多线程,文件传输,断点续传
ABSTRACT
Today, rapid development, people can facilitate exchange on the , transmission text, image, voice, music, animation and other information. The sharing of resources, one of its main significance, is that disk file transfer and sharing. Now the FTP to meet the basic needs of users, but the function is not perfect, research file transmission system has very good prospects.
Sharing information on work or file transfer, are based on some kind of agreement are carried out by, FTP was which the people widely adopted for file transfer protocol in work. Papers described the working principle of FTP and work programming theory, design a file transfer system based on FTP, use the popular Java language as a system development and use of C / S structure as a document transmission work structure. System efforts to provide a safe, transparent, efficient environment for file transfer. First of all, papers introduced the concept of the basic file transfer, give a brief de