基于局域网聊天软件设计与实现.doc

安徽工业大学 毕业设计（论文）说明书 基于局域网的聊天软件的设计与实现 专 业 计算机科学与技术专业 班 级 计 姓 名 -- 学 号 指导教师 二〇一六 年 六 月 十 日 摘 要 如今网络的飞速发展，网络世界这一概念早已不再陌生，正是因为即时通讯软件的诞生，网络世界才蓬勃发展。即时通讯软件给人们提供了一个交流的平台，这种平台逐渐衍生发展成为一种特殊的社区，但是脱离这样的社区就会影响到人们的正常生活，工作和学习。随着通信，网络的整合，即时通讯软件将进一步发展成为新一代的通讯软件，有着巨大的发展前景。Na局域网聊天软件正是介于这样的发展背景之下开发而成。 本论文所设计的局域网聊天程序将采用软件工程学的设计流程，其所涉及专业技术主要包含socket网络编程，ODBC数据库编程技术，Windows MFC 程序设计技术，多线程机制。本程序将以VS 2012作为系统开发工具。此聊天程序将采用C/S模式即客户端/服务器模式。客户端和服务器、客户端和客户端之间均采用UDP进行通信。服务器主要负责储存局域网内所有用户的信息，当用户信息发生变化时通知所有客户端。此外服务器还要负责分配用户的惟一标识id。除此之外，服务器还能注销用户和群发系统消息。客户端具有用户注册、用户登录和向局域网内任何一个用户发送信息的功能。 关键词：局域网聊天；即时通讯；通信；群聊天。 Abstract Today, the rapid development of the network, the concept of the online world is no longer strange, it is because of the birth of instant messaging software, the online world was booming. Instant messaging software to provide people with a communication platform that gradually rise to become a special kind of community, but from such communities will affect peoples normal life, work and study. With the integration of communications, networking, and instant messaging software will be further developed into a new generation of communications software, it has great prospects for development. Na LAN chat software it is under this context of development between developed. This paper is designed LAN chat program using software engineering design process, they involve expertise mainly comprises socket network programming, ODBC database programming technology, Windows MFC programming technology, multi-threading mechanism. This program will VS 2012 as a development tool. This chat program using C / S mode is a client / server model. It is used between the client and the server, client, and client UDP communication. The main server is responsible for storing information for all users within the LAN, to inform all clients when user information changes. In addition the server also responsible for assigning user unique identifier Uid. In addition, the server can log off users an