【正文】 try { if (()) { int flag = (flag)。 } catch (IllegalAccessException e2) { (訪問異常 )。 2. 數(shù)據(jù)庫表的設(shè)計(jì)，不太合理，如系別、專業(yè)、班級等表，不必要分開，可以設(shè)計(jì)一張自身關(guān)聯(lián)的表來存儲(chǔ)就行了。動(dòng)態(tài)測試是通過輸入一組預(yù)先按照一定的測試準(zhǔn)則構(gòu)造的實(shí)例數(shù)據(jù)動(dòng)態(tài)運(yùn)行軟件，而達(dá)到發(fā)現(xiàn)程序錯(cuò)誤的過程，其包括白盒測試與黑盒測試。如圖 59 所示 圖 59 查看結(jié)果圖 學(xué)生查看完成績后可以對自己答過的試卷再次查看，查看正確的答案。 具體如圖 51 所示。 使用方面的可行性 : “在線考試系統(tǒng)”是針對企業(yè)內(nèi)部要對員工考核的需求進(jìn)行開發(fā)的一個(gè)在線系統(tǒng)。學(xué)生可根據(jù)自己的情況，選擇科目、試卷進(jìn)行考試。 數(shù)據(jù)庫連接 JDBC（ Java Data Base Connectivity， java 數(shù)據(jù)庫連接 ）是一種用于執(zhí)行 SQL 語句的Java API，可以為多種關(guān)系數(shù)據(jù)庫提供統(tǒng)一訪問，它由一組用 Java 語言編寫的類和接口組成。由于這些智能化家電的市場需求沒有預(yù)期的高， Sun 放棄了該項(xiàng)計(jì)劃。 contentType 規(guī)定了生成內(nèi)容的類型。通常返回給客戶端的就是一個(gè) HTML 文本，因此客戶端只要有瀏覽器就能瀏覽。投入實(shí)際使用的例子有， 1993 年美國教育考試中心（ Eraduade Record examination 簡稱 ETS）考試；從 1994 年開始，美國護(hù)理證書考試完全在計(jì)算機(jī)上進(jìn)行，等等。例如通過瀏覽器進(jìn)行大量的數(shù)據(jù)輸入或進(jìn)行報(bào)表的應(yīng)答、專用性打印輸出都比較困難和不便。TOMCAT 陜西理工學(xué)院畢業(yè)設(shè)計(jì) 第 III 頁 共 41 頁 The Design and Implement of The Logistics Management System Based on B/S Model Liu Xu (Grade11,Class02,Information and puting science Major, Mathematics and Computing Science Dept., Shaanxi University of Technology, Hanzhong 723000,Shaanxi) Tutor: Zhaohui Abstract: With the development of puter technology and the Inter era, it has entered an information age which is also known as the digital age. In this digital work environment, students prefer personalized munication space to meet, to learn according to their own situation, and also needs a scientific evaluation. The teachers want to effectively improve the current test model to increase the examination efficiency. Education institutions want to give students a more prehensive flexible service to more accurately track and evaluate students. Online examination system is developed to meet this demand targeting to an Interbased test model. With this new model, schools can create a new test environment for the successful test management and to improve the effectiveness and examination standard level, so that school administrators, teachers and students can work anytime, anyw here via the Inter test. In this paper, an online examination system is developed based on JSP. The system includes subsystem modules of students, teachers and administrators submodules. The student module features include: student login, student exams, check grades, student messages and personal information management functions. The teacher module features include: teacher registration, adding courses, paper management, exam management, test management, online marking, performance management, message management, announced management and personal information management. The manager module features include: bulletin management, other management systems, professional management, class management, student management, teacher management and password change functionality. The system uses JSP and MySql as the development tools which are more extensible. Key Words: Online Exem System, JAVA, JSP, MySql 陜西理工學(xué)院畢業(yè)設(shè)計(jì) 第 IV 頁 共 41 頁 目 錄 1 引言 ................................................ 6 研究背景 ............................................. 6 研究意義 ............................................. 6 研究現(xiàn)狀 ............................................. 7 國外研究現(xiàn)狀 ...................................... 7 國內(nèi)研究現(xiàn)狀 ....................................... 7 研究的主要內(nèi)容 ........................................ 7 本文的組織 ........................................... 7 2 系統(tǒng)相關(guān)技術(shù) ........................................ 8 JSP 技術(shù) .............................................. 8 JAVA 語言 ............................................. 9 數(shù)據(jù)庫連接 ........................................... 10 MYSQL數(shù)據(jù)庫 .......................................... 10 SERVLET 技術(shù) ........................................... 10 3 系統(tǒng)需求分析 ........................................................................................ 11 系統(tǒng)概述 .................................................................. 11 可行性分析 ............................................................... 11 技術(shù)可行性 ............................................................... 11 操作可行性 ............................................................... 11 社會(huì)可行性 ............................................................... 11 4 系統(tǒng)概要設(shè)計(jì) ....................................... 12 系統(tǒng)功能模塊圖 ....................................... 12 學(xué)生子系統(tǒng)模塊 ................................... 12 教師子系統(tǒng)模塊 ................................... 14 數(shù)據(jù)庫設(shè)計(jì) ........................................... 16 數(shù)據(jù)字典 ......................................... 16 數(shù)據(jù)表結(jié)構(gòu) ....................................... 16 數(shù)據(jù)表關(guān)系圖 ..................................... 19 5 系統(tǒng)詳細(xì)設(shè)計(jì) ....................................... 20 數(shù)據(jù)庫連接 ........................................... 20 系統(tǒng)架構(gòu)搭建 ......................................... 20 系統(tǒng)目錄結(jié)構(gòu) ..................................... 20 系統(tǒng)訪問權(quán)限設(shè)置 .................................. 21 系統(tǒng)主要功能實(shí)現(xiàn) .................................. 21 系統(tǒng)功能模塊的設(shè)計(jì)與實(shí)現(xiàn) .............................. 22 系統(tǒng)登錄界面 ..................................... 22 系統(tǒng)子模塊 ....................................... 22 6 系統(tǒng)部分功能測試 .................................... 27 系統(tǒng)運(yùn)行環(huán)境 ......................................... 27 ...................................... 27 陜西理工學(xué)院畢業(yè)設(shè)計(jì) 第 V 頁 共 41 頁 7 總結(jié) ............................................... 31 總結(jié) ................................................. 31 未來工作展望 ......................................... 31 參考文獻(xiàn) ............................................. 32 致 謝 ............................................... 33 陜西理工學(xué)院畢業(yè)設(shè)計(jì) 第 6 頁 共 41 頁 1 引言 研究背景 傳統(tǒng)的考試從出題、組卷、印刷，到試卷分發(fā)、答題、收卷，再評卷、公布成績，整個(gè)過程都完全靠人工完成，周期長，工作量大， 容易出錯(cuò)，還要有適當(dāng)?shù)谋Ｃ芄ぷ鳎沟谜麄€(gè)考試的成本較大。老師希望有效改進(jìn)現(xiàn)有的考試模式，提高考 試工作的效率，教育機(jī)構(gòu)也希望給網(wǎng)上的學(xué)生提供更全面靈活的服務(wù)，以更準(zhǔn)確地對學(xué)生進(jìn)行跟蹤和評價(jià)。在線考試系統(tǒng)中題目的生成、試卷的提交、成績的批閱等都在網(wǎng)絡(luò)上自動(dòng)完成。 基于上述考慮，用 B/S 模式來設(shè)計(jì)考試系統(tǒng)比較合適，服務(wù)器端我們采用 MySql 數(shù)據(jù)庫系統(tǒng)