毕业设计（论文）-基于Web的IM即时通信系统的设计与实现.doc

基于Web的IM即时通信系统的设计与实现
摘要
即时通信(Instant messaging,简称IM)是一个终端连往一个即时通讯网路的终端服务。本文首先简单给出了及时通信系统的设计背景和意义,并介绍了系统开发所用到的开发工具和语言,然后在进行了需求分析的基础上,说明了系统功能模块的划分及各模块之间的相互关系,然后着重论述了系统功能的一些重要的技术实现过程。
本文从实际工程应用角度出发,以计算机网络原理为指导,结合当前常用技术,运用C#、Microsoft(R) Visual Studio 2008编程实现基于Web的IM即时通信系统,也保证了系统开发简单,但功能强大,扩展性能好的优势。设计内容包括WEB通信、身份验证、注册登录、建立连接服务器以及数据接口的实现等。系统优势在于通过初步开发和应用,本系统实现了注册用户、在线聊天、离线信息传送和查询聊天记录等功能。
关键词 WEB,C#,VS 2008,IM
Abstract
IM (Instant messaging, referred to as IM) is a terminal connected to an instant work terminal paper gives a simple and munication systemdesign background and significance,and describes the development of systemdevelopment tools and languages used, and then conducting a needs analysis based on, describes the division of function modules and the modules The relationship between the system and then focuses on some important technical features of the implementation process.
From the practical engineering point of view, work theory as a guide, combined with the monly used technique, using C #, Microsoft (R) Visual Studio 2008 programming-based Web-IM instant messaging system, but also to ensure the system to develop simple, yet powerful Expand the good performance advantage. WEB design elements munications, authentication, registration registry, established connection to the server and data implementation of the interface and so on. System advantage is through the initial development and application of the registered users of the system implementation, online chatting, offline messaging and chat features such as query.
Key words WEB,C#,VS 2008,IM
目录
1 绪论 2
2
web介绍 2
2
课题的研究目的和意义 2
论文的主要研究内容 3
2系统概况 3
3
3
开发工具和语言 4
核心技术 4
Ajax 5
5
3系统开发 10
10
11
11
11
11
11
12
12
(E-R图) 12
13
14
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16