毕业设计-即时通信软件的开发与设计

本科毕业设计（论文）

即时通信软件的开发与设计

摘要

随着计算机互联网技术的不断发展，国家对互联网的不断重视，各种各样的社交软件层出不穷，使用通信软件交流成为了人们生活中必不可少的一部分。即时通讯工具作为未来跨越互联网与移动互联网的业务，其发展的潜力是十分巨大的，同时，其商业模式的发展将是未来要关注的焦点。免费与收费相结合的发展策略将是IM的主要发展模式。

本论文实现一个运行于windows平台的基于局域网的即时聊天系统。该聊天软件包括服务器端和客户端两个模块，客户端向服务器端发送服务请求服务器端向客户端提供相应的服务。客户端主要实现用户登录、注册、聊天等功能。该软件采用多线程技术、tcp通信技术、udp通信技术，并在传输数据时对消息实现序列化和数据的还原。

该软件能实现企业员工内部聊天交流，避免企业内部员工使用类似QQ等软件泄露内部信息，但是该软件只实现了登录、注册、聊天等基本功能，还有很多不足之处需要改进。

关键字客户端,服务器,c/s,即时通信,套接字.

ABSTRACT

With the continuous development of computer technology, the Internet, the state continues to pay attention to the Internet, a variety of social software after another, using communication software exchange has become an indispensable part of people's lives. Instant messaging as the future across the Internet and mobile Internet business, its development potential is enormous, while the development of its business model will be the focus of the future to pay attention. Free and fee development strategy will be a combination of IM's main development model.

In this paper, the realization of a run on LAN-based instant messaging system windows platform. The chat software includes server and client of two modules, the client sends a service request to the server to the client to provide appropriate services to the server. Client main implement user login, registration, chat and other functions. The software uses multi-threading technology, tcp communication technology, udp communications technology, and in the transmission of data to achieve reduction message serialization and data.

The software enables employees chat internal communication and to avoid internal staff use similar software QQ leaked inside information, but the software only to realize the login, registration, chat, and other basic functions, there are many deficiencies need to be improved.

Keywords client, server, c / s, instant messaging, sockets

目录

摘要 ........................................................................................................................................ I ABSTRACT .............................................................................................................................. II

1 前言 (1)

1.1课题背景及意义 (1)

1.2国内现状及发展趋势 (1)

1.3现行系统的不足 (2)

1.4 解决方案 (2)

2 系统开发关键技术及开发环境 (3)

2.1 qt及qtcreator开发环境 (3)

2.1.1 qt简介 (3)

2.1.2 Qt Creator简介 (3)

2.2 mysql数据库介绍 (4)

2.3 socket套接字介绍 (5)

2.4 IP (5)

2.5 TCP (6)

2.5 udp协议简介 (6)

2.6 c/s 模式介绍 (7)

2.7多线程技术介绍 (8)

3.系统设计 (10)

3.1 系统分析 (10)

3.1.1 功能需求分析 (10)

3.1.2 性能需求分析 (11)

3.1.3 数据需求分析 (11)

3.2系统设计 (13)

3.2.1工作流程 (13)

3.2.2服务器设计 (13)

3.2.3客户端设计 (14)

4 系统关键技术实现 (15)

4.1服务器实现 (15)

4.2客户端实现 (18)

5系统测试 (32)