臺灣博碩士論文加值系統

　　在近年來，網路的應用越來越多樣化了，不論是寬頻的普及，或是無線網路與藍牙技術的興起，都帶給人們更多樣化的網路使用方式，但是在較低速網路上，連線的資源經常不能滿足使用者的需求；在過去的一些文獻中可以了解行動代理人技術可以有效地降低網路的負載，並且協助使用者進行更複雜的任務，因此本論文希望利用Java技術與特性設計一個行動代理人系統，並且可以應用在多種領域裡。
　　本論文所提出之行動代理人系統稱之為Mobile Agent Space System (MASS)，在實驗中以MASS為系統主體，以期因應不同的應用範例加以擴充，並加入了電子商務的實驗，將行動代理人與網頁服務結合，開展行動代理人應用的領域。
　　在本論文中尚提出一個新的代理人遷移模式，以較少的資源達到代理人狀態儲存與回復的功能，讓代理人能夠在不同的站台間移動，並視需要安排代理人的旅程，可使任務依序在各個站台間完成任務。

　　Following the proliferation of computing and networking, almost everyone’s desire to be interconnected, and the needs to make data accessible at any time anywhere, has caused modern information environments to become large, open, and heterogeneous. Recently, broadband, wireless, and blue tooth have been utilized popularly, that has led human more ways to use Internet. The resource of connection in Internet is insufficient for users to use low speed of networks. Some papers illustrate that technologies of Mobile Agent can reduce the overhead of network connection and assist user in solving complex tasks. For this reason, my thesis uses the technologies and characteristics of Mobile Agent to implement a Mobile Agent System, that can be applied in many fields.
　　In this thesis, we propose a Mobile Agent System called Mobile Agent Space System (MASS). We will also apply the MASS in different examples, that integrates Mobile Agent and Web service in E-Commerce environment.
　　Besides, we propose a new Agent Migration Model, it can provide the capabilities of storing and recovering Agent’s states and spend less resource. The capabilities can allow agents to migrate in different sites. The journey of Agent can be configures by the requirements of tasks.

摘要...........................................................I
Abstract.....................................................III
誌謝...........................................................V
目錄..........................................................VI
圖目錄........................................................IX
1.緒論.........................................................1
1.1研究背景與動機............................................1
1.2研究目標..................................................2
2.文獻探討.....................................................4
2.1行動代理人系統............................................4
2.2中介系統..................................................6
2.3技術與標準................................................6
2.3.1網路傳輸..............................................7
2.3.2代理人控制............................................7
2.3.3動態載入..............................................7
2.3.4遷移方式..............................................8
3.系統分析與設計..............................................10
3.1MASS的目標...............................................10
3.2技術的選擇...............................................11
3.3MASS的規劃與設計.........................................12
3.3.1分層式設計...........................................12
3.3.2群組設計.............................................15
3.3.3名稱對應(Naming)設計.................................16
3.3.4代理人生命週期設計...................................17
3.3.5代理人的遷移流程.....................................18
3.3.6狀態序列化式遷移(State-Stream Migration).............20
3.3.7MASS的訊息與事件傳遞模式.............................21
3.3.8事件處理模式.........................................22
4.系統實作架構................................................24
4.1MessagerServer...........................................24
4.2MASS Place...............................................25
4.3Service..................................................25
4.4Agent....................................................27
4.5Client...................................................28
5.實驗設計與結果..............................................31
5.1計數代理人實驗...........................................31
5.1.1啟動MessageServer....................................32
5.1.2啟動Place............................................32
5.1.3使用Client介面操作代理人.............................39
5.2電子商務交易代理人實驗...................................55
5.2.1啟動MASSPlace........................................55
5.2.2啟動網頁服務.........................................57
5.2.3使用TradeClient操作代理人............................58
5.2.4使用瀏覽器參與交易...................................69
6.結論........................................................78
參考文獻......................................................80
作者簡介......................................................87
圖目錄
圖3-1 MASS系統設計的概念三層式架構............................13
圖3-2 MASS系統設計的實際三層式架構............................14
圖3-3 MASS整體架構圖..........................................16
圖3-4 代理人的生命週期狀態圖..................................18
圖3-5 代理人遷移流程..........................................20
圖3-6 訊息傳遞模式............................................21
圖3-7 事件傳遞模式............................................22
圖3-8 事件處理模式............................................23
圖4-1 MASS中的一個Mobile Agent Space的架構....................30
圖4-2 Client與Mobile Agent Space的互動架構圖..................30
圖5-1 MessageServer啟動以及Service登錄的畫面..................32
圖5-2 MASS Place啟動後的畫面..................................33
圖5-3 ser1控制設定RMI的選單...................................33
圖5-4 設定RMIRegistry的對話盒.................................33
圖5-5 ser1設定完RMI...........................................34
圖5-6 ser1設定MessageServer的選單.............................35
圖5-7 設定MessageServer的對話盒...............................35
圖5-8 ser1設定完MessageServer.................................36
圖5-9 ser1加入新Service的選單.................................36
圖5-10 設定Service的對話盒....................................37
圖5-11 ser1加入Service之後....................................37
圖5-12 ser2的RMI設定對話盒....................................38
圖5-13 ser2的Service設定對話盒................................38
圖5-14 ser2設定完成後.........................................39
圖5-15 MyClient啟動後的起始畫面...............................40
圖5-16 MyClient設定MessageServer的選單........................40
圖5-17 MyClient連結MessageServer完成..........................41
圖5-18 以MyClient建立代理人的選單.............................42
圖5-19 建立代理人的對話盒.....................................42
圖5-20 以MyClient建立新的代理人...............................43
圖5-21 MyClient列出所有Service的選單..........................44
圖5-22 MyClient取回所有可登入Service的選單....................44
圖5-23 檢查並取回所有可登入Service的確認對話盒................44
圖5-24 以MyClient為Journey加入目的地選單......................45
圖5-25 加入新的目的地對話盒...................................45
圖5-26 以MyClient設定完代理人的Journey........................46
圖5-27 以MyClient啟動代理人開始旅程的選單.....................47
圖5-28 啟動旅程的提示對話盒...................................47
圖5-29 MyClient的代理人派出後，在ser2的狀態...................48
圖5-30 MyClient根據代理人的遠端事件，將原本的(RUNNING)變成(MIGRATED)....................................................49
圖5-31 MyClient觀察到代理人遷移到ser1的畫面改變...............50
圖5-32 MyClient遠端命令對話盒.................................51
圖5-33 遠端命令對話盒.........................................51
圖5-34 MyClient觀察到代理人因Suspend的命令所產生的狀態改變....52
圖5-35 MyClient觀察到代理人已經完成所有旅程...................53
圖5-36 MyClient發出Return命令的選單...........................53
圖5-37 回到出發點的代理人在DOS命令列顯示出所有的狀態細節......54
圖5-38 trade設定Service的對話盒...............................56
圖5-39 trade完成Service設定...................................56
圖5-40 JRun控制程式，網頁服務啟動前...........................57
圖5-41 JRun控制程式，網頁服務啟動後...........................58
圖5-42 client1啟動後的初始畫面................................59
圖5-43 client1加入的TradeAgent設定............................60
圖5-44 client1將trade Service加到代理人的Journey裡............60
圖5-45 client1加入交易項目的選單..............................61
圖5-46 client1第一個交易項目的設定............................61
圖5-47 client1加入第一個交易項目..............................62
圖5-48 client1加入第二個交易項目..............................63
圖5-49 client2加入兩個交易項目................................64
圖5-50 client3加入一個交易項目................................65
圖5-51 client1的CPU項目交易完成...............................67
圖5-52 client1的RAM項目尚未完成交易...........................68
圖5-53 client2的CPU項目交易完成...............................69
圖5-54 MASS-Trade Market首頁..................................70
圖5-55 新會員填寫個人資料的網頁...............................71
圖5-56 新會員加入成功.........................................72
圖5-57 會員從首業登入MASS-Trade Market........................73
圖5-58 MASS-Trade Market列出目前所有的交易項目................74
圖5-59 使用者與代理人達成交易.................................75
圖5-60 client1偵測並反應項目RAM已經完成交易...................76
圖5-61 電子商務實驗之交易結果示意圖...........................77

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