【正文】 義，它能實(shí)現(xiàn)快速人際交流、數(shù)據(jù)共享，從而提高效率和生產(chǎn)力。 Network munications。 needs of munication. This system has some characteristic as follows : simplify operation, friendly interface, single function. This paper introduced the process of the system39。 關(guān)鍵詞 :聊天系統(tǒng)；網(wǎng)絡(luò)通信；網(wǎng)絡(luò)編程 Abstract Along with the rapid development of puter work technology, the ways of people’s munication are increased rapidly. The traditional means of munication has beevery difficult to meet people39。該系統(tǒng)具有操作簡(jiǎn)單、界面友好 、功能專一等特點(diǎn)。自從它誕生以來(lái)，以實(shí)時(shí)交互、資費(fèi)低廉等優(yōu)點(diǎn)，受到廣大個(gè)人用戶的喜愛，已經(jīng)成為網(wǎng)絡(luò)生活中不可或缺的一部分。畢業(yè)設(shè)計(jì) (論文 ) Java聊天系統(tǒng)的開發(fā) 和研究 摘要 隨著計(jì)算機(jī)網(wǎng)絡(luò)技術(shù)的快速發(fā)展，人們的交流方式越來(lái)越多，傳統(tǒng)的通信方式在速度和可靠性方面已經(jīng)很難滿足人們的需要，即時(shí)通信系統(tǒng)已成為人們的新寵。同時(shí)，即時(shí)通信系統(tǒng)對(duì)現(xiàn)代企業(yè)也有著重大意義，它為諸企業(yè)開拓了網(wǎng)絡(luò)應(yīng)用的新領(lǐng)域。本著學(xué)以致用的原則，本人開發(fā)了這套多點(diǎn)聊天系統(tǒng)，以滿足網(wǎng)絡(luò)用戶的通訊需求。本論文就系統(tǒng)的開發(fā)過(guò)程做了詳細(xì)的介紹，并對(duì)系統(tǒng)的原理、總體設(shè)計(jì)等方面做了深入細(xì)致的討論。s needs in speed and reliability. Instant munication system has bee the new darlings of the people. Meanwhile, Instant munication system is also of great importance to the modern enterprises. It exploits a new domain for the enterprise. It has been enjoyed by the majority of individual users for its realtime interaction between the advantages of low rates since its bored. It has been an integral part of work life. In apply of the principle of practice, I developed the set of multipoint chatting system to meet the work users39。s exploitment in detail, and deeply discussed the principle of system、 collectivity design. Keywords: Chatting system。 Network programming 目 錄 ......................................................................................................................................................................6 ....................................................................................................................................................7 ......................................................................................................................................................7 ..................................................................................................................................................7 ................................................................................................................................................9 ..................................................................................................................................................9 ............................................................................................................................................... 10 ............................................................................................................................................... 10 通信原理 ........................................................................................................................................ 12 ............................................................................................................................................... 12 客戶端套接字 .................................................................................................................................. 13 服務(wù)器端套接字 .............................................................................................................................. 14 數(shù)據(jù)報(bào)通信 .............................................................................................................................................. 14 無(wú)連接的客戶 /服務(wù)器程序工作流程 ................................................................................................... 17 多線程編程 .............................................................................................................................................. 18 ......................................................................................................................................................... 20 系統(tǒng)通信模型與拓?fù)浣Y(jié)構(gòu)設(shè)計(jì) ............................................................................................................. 20 即時(shí)通訊系統(tǒng)的一般模型 ............................................................................................................. 20 即時(shí)通訊系統(tǒng)服務(wù)的拓?fù)淠Ｐ? ..................................................................................................... 21 5． 2 功能設(shè)計(jì) ............................................................................................................................................... 21 服務(wù)器端功能設(shè)計(jì) .......................................................................................................................... 21 客戶端功能設(shè)計(jì) .............................................................................................................................. 22 5． 3 界面設(shè)計(jì) ............................................................................................................................................... 23 服務(wù)器端界面設(shè)計(jì) .......................................................................................................................... 23 客戶器端界面設(shè)計(jì) .......................................................................................................................... 24 ......................................................................................................................................................... 26 服務(wù)器端詳細(xì)設(shè)計(jì) ................................................................................................................................. 26 界面設(shè)計(jì) .......................................................................................................................................... 26 功能模塊的實(shí)現(xiàn) .............................................................................................................................. 26 客戶端詳細(xì)設(shè)計(jì) ...................................................................................................................................... 27 界面設(shè)計(jì) ...........