以Jini為基礎達成協調工作的拍賣系統

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姓名

胡子奇(Tzu-Chi Hu) 查詢紙本館藏

畢業系所

資訊工程學系

論文名稱

以Jini為基礎達成協調工作的拍賣系統
(Coordinating a Jini-based Auction System on the WWW)

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摘要(中)

二十世紀網際網路的出現，帶給全球無與倫比的衝擊震撼，只要擁有一部能上網的電腦，任何生活資訊幾乎是垂手可得。慢慢地，網際網路成為所有企業無法抗拒的趨勢且利用頻繁的媒介，電子商務也因此漸漸蓬勃發展起來。
在本論文中，我們以目前在電子商務中較成熟的拍賣網站作為探討的主題，針對幾個著名著網站仔細地研究之後，我們希望加強網站不足之處：（1）線上競標－有主持人主持會場秩序，先在白板上告示拍賣商品，拍賣會開始就接受競標者舉牌競標，並即時更新白板目前最高競標價及競標者資訊，讓使用者有如臨現場的參與感。（2）代理人之設計－在現今的網站，使用者必須重複上網、競價、下網等動作以確保自己的競標價保持領先狀態，以致最後奪標。而這些機械化的重複程序其實可以交由使用者專屬代理人來處理的，如此的設計不僅可以減少使用者浪費在網際網路上查詢競標歷史及競標的時間，更可增加競標的效率。
為了要達成這兩個目的，我們必須做很多的協調工作，所以我們必須在設計網站時加入協調機制以利協調的運作。在此，我們採用了Sun Microsystem所推出，以Java實作且在協調機制上支援較為完善的Jini/JavaSpace作為拍賣時協調的工具。

摘要(英)

Due to the appearance of internet during the 20th century, we can get any information with a networked computer. Gradually, the internet becomes an irresistible trend and e-businesses also start growing faster and faster.
In this research, we choose auction web sites that are more mature in e-business as a subject. After studying some famous web sites, we hope to enhance two common disadvantages of the sites: (1) online bidding－we need an auctioneer to deal with the auction order. First, the auctioneer announces the information related to the auctioning product on the whiteboard. Second, he starts receiving bids made by participant bidders and updates the current highest bid and bidder’s name on the whiteboard so that the auction seems live for participants. (2) agent design－In current auction web sites, users have to repeat operations like connecting to the net, making bids, and disconnecting to ensure that their bids are taking the lead until the end. But actually, these mechanical procedures could be handled by agents that belong to users. By agent design, we can reduce the time of querying bidding statuses and making bids on the net and improve the bidding efficiency for users.
In order to achieve these two goals, we have to do a lot of coordination. Therefore, we need to apply a coordination mechanism while designing the auction web site. Here we adopt a coordination tool that is published by Sun Microsystem implemented with Java programming language, and that provides robust support in coordination－Jini/JavaSpaces－for the auction web site.

關鍵字(中)

★ 拍賣系統
★ 協調

關鍵字(英)

★ Auction
★ Coordination
★ Coordinating
★ Jini

論文目次

錄
第一章緒論………………………………………………………1
1.1 背景…………………………………………………………….1
1.2 動機…………………………………………………………….2
1.3 論文結構……………………………………………………….3
第二章 Jini/JavaSpaces的介紹………………………………4
2.1 Jini 的概說與遠景…………………………………………..4
2.2 Jini 五大主要概念…………………………………………..5
2.3 Jini運作程序………………………………………………...9
2.4 JavaSpaces 概說………………………………………………10
2.5 JavaSpaces的特性…………………………………………….11
2.6 JavaSpaces與Jini的關係…………………………………….12
2.7 結論…………………………………………………………...13
第三章拍賣網站實例…………………………………………..14
3.1 使用者需求分析……………………………………………...14
3.2 使用案例（use case）發展………………………… ……..14
3.2.1目標分析…………………………………………………… .15
3.2.2 發展使用案例……………………………………………… 15
3.2.3 使用案例之描述…………………………………………… 20
3.3 循序圖發展…………………………………………………...21
3.4 類別圖發展…………………………………………………...24
3.5 系統架構解析………………………………………………...27
3.6 系統運作圖解………………………………………………...31
第四章系統實作
4.1 Jini/JavaSpace執行模式……………………………… ……37
4.2實作客戶端……………………………………………… …….49
4.3 實作監控代理人………………………………………… ……56
第五章相關文獻探討……………………………………………….57
5.1 Linda簡介…………………………………………………… 60
5.2 T Spaces簡介……………………………………………… 62
5.3 PageSpace簡介……………………………………………… 64
5.4 一般網站的架構……………………………………………. .67
第六章問題討論…………………………………………………….69
6.1 選擇JavaSpaces作為協調機制的原因……………………. .69
6.2 以代理人協調和以JavaSpaces協調的比較………………. .70
6.3 設定系統架構為網路架構及JavaSpaces為協調機制以製作類別圖的原因…………………………………………………………………….72
6.4 以網路架構及JavaSpaces為協調機制製作類別圖對系統分析
造成的影響......………………………………………………….75
第七章結論....…………………………………………………….77
參考文獻…………………………………………………………….78

參考文獻

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指導教授

李允中(Jonathan Lee)

審核日期

2000-7-14

推文