【正文】 the project to statistical tables, graphic statistics on the Source Fe JFreeChat is an open source J2EEbased projects, is a good solution. Fundamental to resolving the current needs of graphics. Including drawing the piechart (plane and threedimensional) Histogram, curves, timing plans Gantt, etc. The graphics can be exported into PNG and JPEG formats。在項目管理系統(tǒng)中，客戶要明確的知道項目階段的進展情況，能夠很直觀的看到項目的進度，可以明確的看出項目的計劃開始時間，計劃結束時間，實際結束時間，最主要的是可以看出項目中一個 階段的完成情況和計劃的差別，能很好的讓監(jiān)理人員作好下一步的工作 排。 監(jiān)理公司 通過系統(tǒng)可以控制每一個階段及檢查點的進度，合理的安排工作人員和分配資金，每 個階段的相關文檔和會議內容都會記錄在案方便以后的查閱，系統(tǒng)有相關的信息發(fā)布，讓工作人員能即時的了解最新的信息資訊。在系統(tǒng)的首欄有圖表可以詳細的表示出項目工程中各個階段的進度，讓工作人員登陸后就能準確的了解自己所在項目的進度情況。 本論文 實現(xiàn) 了 項目 管理 系統(tǒng) 和開源圖形統(tǒng)計庫在其中的應用 。 can also be associated with the PDF and EXCEL. In the project management system, customers must be clear that the phase of the project progress, can be very intuitive to see the progress of the project, and can clearly see that the project plans start time, the end of time, and the actual end of time. The most important thing is can be seen the difference in a phase of the project and plans to plete, it will be very good for the next missioner of staff for the anization of work. This thesis achieved a project management system and open source graphics library statistics in which the application. In this paper, system design and opensource statistical graphics library JFreeChat done a detailed introduction, and some of the graphics API done a detailed explanation on the future use of a lot of convenience. 湖南大學畢業(yè)論文 第 3 頁 The system design and development of the J2EE application development platform, database systems used in Mysql. Keyword: J2EE, Project Management System, Gantt, JFreeChat 湖南大學畢業(yè)論文 第 4 頁 目 錄 1 緒論 ........................................................................................................................................ 6 2 相關技術和開源圖形統(tǒng)計庫簡介 ........................................................................................ 8 J2EE 簡介 ........................................................................................................................ 8 平臺簡介 ................................................................................................................. 8 使用 J2EE 進行 WEB 開發(fā)的優(yōu)勢 ......................................................................... 10 常用的 J2EE 技術 ................................................................................................. 11 Struts 簡介 .......................................................................................................... 11 Struts+Hibernate3 的構架模式 ........................................................................ 13 開源圖形統(tǒng)計庫 ........................................................................................................... 14 開源圖形統(tǒng)計庫 JfreeChart 簡介 ...................................................................... 14 甘特圖簡介 ........................................................................................................... 15 3. 系統(tǒng)需求分析 .................................................................................................................... 17 系統(tǒng)目標 ....................................................................................................................... 17 系統(tǒng)功能分析 ............................................................................................................... 17 4. 系統(tǒng)分析與設計 ................................................................................................................ 19 系統(tǒng)功能模塊的設計 ................................................................................................... 19 項目流程管理設計 ............................................................................................... 19 文檔管理設計 ....................................................................................................... 20 資金管理設計 ....................................................................................................... 21 用戶管理設計 ....................................................................................................... 22 數(shù)據(jù)庫設計 ................................................................................................................... 24 系統(tǒng)模塊的詳細 設計 ................................................................................................... 28 項目流程管理 ....................................................................................................... 28 文檔管理 ............................................................................................................... 30 資金管理設計 ....................................................................................................... 31 5 統(tǒng)計圖及在模塊中的實現(xiàn) ............................................................................................... 32 系統(tǒng)模塊的編譯 ........................................................................................................... 32 HIBERNATE對數(shù)據(jù)庫的連接 ............................................................................................ 32 JFREECHART生成甘特圖 .................................................................................................. 35 JfreeChart 主要相關類 ...................................................................................... 35 甘特圖的生成 ....................................................................................................... 39 總結： ...................................................................................................................................... 40 致謝： ...................................................................................................................................... 41 參考文獻： .............................................................................................................................. 42 附錄 A：系統(tǒng)部分代碼 .......