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摘要基于P2P（Peer to Peer）模式构建的商业项目有一个必然的需求——为用户搭建一个即时交流平台，方便用户即时沟通，从而促成用户在P2P产品中完成沟通、交易闭环。因为P2P模式的商业项目核心是一种分享型经济，用户在将自己的产品分享出来后，当有其他用户对自己的分享感兴趣，那么他们之间就需要一个即时沟通交流的平台，特别是在当前隐私信息不会被轻易公布的前提下，两个完全陌生的人产生联系的第一步便是P2P产品中的即时交流系统。必要的交流是完成交易闭环必须经过的一个步骤。27221
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本文以为P2P模式下的商业应用实现一个网页即时聊天系统为研究目的，在分析现有聊天系统的基础上，设计并实现网页即时聊天系统，主要的工作有如下几点：
首先从分析 了网页即时聊天系统对P2P商业项目的必要性，然后调查研究现有的即时聊天系统，特别是网页即时聊天系统，从多个文度分析了它们的存在必要性、功能完备性和使用的各项技术，详细列举了其中的技术难点以及本人对这些难点的思考，对自己即将实现的产品有一个总体的把握。
然后分析整理了网页即时聊天中常用的功能，并以此为基础设计数据库，为进一步编码实现做好准备。
最后根据前面工作的分析总结，进行产品的系统架构设计、核心算法设计以及数据库的设计实现，实现针对P2P项目的网页即时通讯系统并投入使用，在实践中检验产品的稳定性，并根据检测的结果对现有的网页即时通讯系统提出改进的方法。
关键词 P2P模式 即时通讯 网页即时通信 直接网页远程控制（DWR）
毕业论文外文摘要
Title P2P mode of instant messaging system design
Abstract
The P2P （Peer to Peer）model has an inevitable requirement , which for users to build an instant communication platform, the convenient user instant communication, to enable users to complete communication, transaction closed loop in peer-to-peer (P2P) products. Because core commercial project of the P2P model is a kind of sharing economy, after users share their products come out, when there are other users interested in their own share, so they will need a real-time communication platform, especially in the current privacy information will not be easily released under the premise of two complete strangers into contact is the first step in P2P instant communication system of product. Necessary communication to finish the transaction closed loop is must a step to undergo.
This article thought that the commercial application of P2P mode to implement a web page instant messaging system for research purposes, on the basis of analyzing the existing chat system, was designed and implemented of instant messaging system, the main work is as follows:
First mentioned from P2P model, has been clear about the web pages the necessity of instant messaging system for P2P commercial projects, and then the investigation and study of the existing instant messaging system, especially the website live chat system, analyzes the necessity of their existence from multiple dimensions, functionality, completeness and use of the technology, detailed technical difficulties of them, and I think of these difficulties, for their products to achieve a general grasp.
Then analyzed the function of web page that is commonly used in instant messaging, and on this basis, design of database, to be prepared for the further implement.
According to the work in front of the analysis summary, system architecture design, the core algorithm of product design and database design implementation, realize the web instant messaging system for P2P project and put into use, in practice, test the stability of the products, and according to the test results for instant messaging system to improve the existing web page.
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