VB+ACESS 即时通讯软件论文

即时通讯软件

李宁

（浙江海洋学院 数理与信息学院，浙江舟山 316004）

摘 要

关于即时通讯系统（Instant Messaging System）的研究目前是互联网中一个热门方向，尤其是关于企业级的即时通讯系统更为国内外应用的热点。企业版的即时通讯软件的诞生，给企业的管理带来了新的思路和手段。推动了企业工作效率的提高，办公费用的降低，引起了工程应用领域的研究热潮。

即时通信中最基本的功能就是通过计算机之间的文本数据的互换的形式实现思想的交流和沟通，它的优点是方便快捷，为人们之间创建了一种新型的、廉价的、快速的、简便的沟通方式。目前即时通讯系统不仅是娱乐聊天工具，更是影响着局域网内部的管理及其交流方式。

局域网即时通讯系统为企业员工之间的交流又提供了一个新的手段，它是一个可以自定义的网络信息传递软件，能即时发送信息。

本即时通讯软件系统采用了客户机/服务器（C/S）模式，软件的主体开发环境选择的是Visual Basic 6.0(SP6)，搭配的是ADO技术调用Access数据库。

关键词：即时通讯软件系统 服务器 客户端 局域网 ADO技术 Visual Basic

Instant Messaging Software

Ning Li

(School of mathematics, physics and information, Zhejiang Ocean University 316004)

Abstract

The research about the Instant Messaging System is a hot direction of the internet industry at present, it is especially a focus studied both at home and abroad even more about the instant messaging system of enterprise customer. The birth of the instant messaging software of the enterprise edition has brought the new thoughts and means to management of enterprises. Having promoted the improvement of enterprise's working efficiency, the reducing of the official bossiness cost, has caused the research upsurge of the project application.

The most fundamental function of IM is the data exchange between the computer. IM's merit is to rapid , to have established one kind between conduct conveniently to link way up late-model , low-priced , speedy , simple and convenient. At present,IM is an entertainment chat implement not only , also is the internal administration being affecting a local area network and their exchange way.

LAN IM has provided a new means to the exchange between enterprise employee. One can receive and send imformation immediately.

The instant messaging system has adopted the client/server (C/S) mode. The software exploitation environment is Visual Basic 6.0(SP6).The data base mode is Access.

Key words：Instant Messaging System Server Client Local Area Network(LAN) ADO Visual Basic

目录

摘 要 ................................................................................................................................. I Abstract ............................................................................................................................. II

1概述 ............................................................................................................................... 1

1．1即时通讯软件的发展历程 .............................................................................. 1

1．2 国内外即时通讯研究的现状 ......................................................................... 1

1．3 本文的研究内容和意义 ................................................................................. 2

2系统设计与选型 ........................................................................................................... 3

2．1了解用户需求 .................................................................................................. 3

2．2软件工具的选型 .............................................................................................. 4

2．3服务器模块的功能分析 .................................................................................. 4

2．4客户端模块的功能分析 .................................................................................. 4

3数据环境的设计 ........................................................................................................... 6

3．1服务器端Users.mdb的结构 .......................................................................... 6

3．2客户端Data.Mdb的结构 ................................................................................ 7

3．3客户端Users.ini的结构 .............................................................................. 7

4网络协议的设计 ........................................................................................................... 8

4．1网络协议概述 .................................................................................................. 8

4．2网络协议的设计 .............................................................................................. 8

5服务器模块的创建 ..................................................................................................... 10

5．1服务器端的主窗体frmServer ..................................................................... 10

5．2服务器的初始化 ............................................................................................. 11

5．3接受客户端的连接 ........................................................................................ 12

5．4服务器与客户端的数据交互 ........................................................................ 12

5．5客户端断开连接 ............................................................................................ 13

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