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java自測(cè)在線考試系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)畢業(yè)論文(存儲(chǔ)版)

  

【正文】 e Java code to generate entire trees of tags in an XML document. The code must simply print out the tags in addition to the data. This is what lines 1517 do.Adding JavaBeans ponentsThe JSP syntax supports adding JavaBeans ponents to the page and accessing them like any other Java object. The special jsp:useBean tag is used to declare and instantiate the bean. The page piler will use the attributes of the jsp:useBean tag to build the Java code in the page servlet, which is necessary to instantiate the bean and populate it with data from the request. Because JavaBeans ponents are generically meant to perform a task, it39。例如,您可以使用 Java 代碼生成兩個(gè) XML 標(biāo)記之間的數(shù)據(jù),生成 XML 文檔樹的各個(gè)部分(標(biāo)記和數(shù)據(jù)),甚至可以生成整個(gè)文檔。頁(yè)面的擴(kuò)展名 .jsp(不是 .html)向應(yīng)用程序服務(wù)器暗示了這些標(biāo)記的存在。過一會(huì)兒我們將考慮如何使用以上的特性。在包含 XML 的 JSP 頁(yè)面的請(qǐng)求者(可能是一個(gè)瀏覽器,也可能是某個(gè)企業(yè)對(duì)企業(yè)的應(yīng)用程序)看到 XML 之前,Java 代碼被剝離 JSP 頁(yè)面并用來(lái)生成其他內(nèi)容,生成的內(nèi)容被插入到 JSP 標(biāo)記原來(lái)所在的頁(yè)面位置。這些標(biāo)記使設(shè)計(jì)人員能夠?qū)?Java 代碼(不是 JavaScript)嵌入到頁(yè)面中。為了生成文檔的動(dòng)態(tài)部分,您既可以使用直接編寫在 JSP 頁(yè)面中的 Java 代碼,也可以使用從該頁(yè)面外部調(diào)用的 Java 代碼。s service() method regardless of its placement in the page. For readability, though, you may want to consider adding it as the second line, like this:Add the Java codeNow all that is left is to add the Java code to customize some of the content of the XML. We add the Java code to the file between scriptlet tags (%...%). The page piler will interpret anything between these tags as pure Java code and will add it, unchanged, to the service() method of the resulting page servlet. All code within the scriptlet tags is added to the service() method in the order that it appears within the JSP page. The scope of the code added is the entire page, and thus the entire service() method. So if you define a variable in one set of scriptlet tags at the beginning of the file, you can reference it later in the file using a pletely different set of scriptlet tags. You can impose a scope by adding your own sets of curly braces ({...}) around variable definitions. These braces can even begin and end in different sets of scriptlet tags.In the following example, I replace a few of the static dates in the original XML file with some Java code using the Calendar class. The code uses the current date and adds hours and minutes along the way to create the appropriate time entries for several of the XML tags. The Java code is boldfaced. Line numbers are added for reference later.Here39。s tipped off to their existence by the page39。一個(gè)管理信息系統(tǒng)的設(shè)計(jì),不可能一步到位,還需要不斷的完善和補(bǔ)充。而在軟件開發(fā)的總成本中,用在測(cè)試上的開銷要占30%到50%。問題在于我們?nèi)绾稳ケ苊忮e(cuò)誤的產(chǎn)生和消除已經(jīng)產(chǎn)生的錯(cuò)誤,使程序中的錯(cuò)誤密度達(dá)到盡可能低的程度。 數(shù)據(jù)庫(kù)中表的設(shè)計(jì)(1)數(shù)據(jù)庫(kù)名稱為 db_exam(2)數(shù)據(jù)庫(kù)中的關(guān)鍵數(shù)據(jù)庫(kù)表格設(shè)置 t_admin序號(hào)字段名稱類型長(zhǎng)度標(biāo)志描述1userIdInt4主鍵2userNamevarchar503userPwvarchar50 t_stu序號(hào)字段名稱類型長(zhǎng)度標(biāo)志描述1stu_idint4主鍵2stu_xuehaovarchar503stu_realnamevarchar504stu_sexvarchar505stu_agevarchar506stu_cardvarchar507stu_zhengzhimianmaovarchar508login_namevarchar509login_pwvarchar5010delvarchar50 t_tea序號(hào)字段名稱類型長(zhǎng)度標(biāo)志描述1tea_idint4主鍵2tea_bianhaovarchar503tea_realnamevarchar504tea_sexvarchar505tea_agevarchar506login_namevarchar507login_pwvarchar508delvarchar504 系統(tǒng)界面展示 系統(tǒng)登錄界面 系統(tǒng)登錄界面 管理員登錄主界面 管理員登錄主界面 課程管理主界面 課程管理 題庫(kù)管理主界面 試卷管理 試卷管理主界面 學(xué)生登錄主界面 學(xué)生登錄主界面 老師登錄主界面 老師登錄主界面5 軟件測(cè)試測(cè)試是開發(fā)時(shí)期最后一個(gè)階段,是保證軟件質(zhì)量的重要手段。此應(yīng)用程序可廣泛運(yùn)行于國(guó)際互聯(lián)網(wǎng)即Internet,也可適用于內(nèi)部的局域網(wǎng)。針對(duì)考生角色:☆ 在線自測(cè):考試選擇試題進(jìn)行自測(cè)。然后,考生需要自測(cè)科目和題庫(kù)的來(lái)源,所以管理者需要對(duì)考試科目和試題庫(kù)進(jìn)行維護(hù),最后自測(cè)者需要選擇試卷進(jìn)行自測(cè)。數(shù)據(jù)庫(kù)服務(wù)器SQL數(shù)據(jù)庫(kù),它能夠處理大量數(shù)據(jù),同時(shí)保持?jǐn)?shù)據(jù)的完整性并提供許多高級(jí)管理功能。 可行性分析可行性分析(Feasibility Analysis)也稱為可行性研究,是在系統(tǒng)調(diào)查的基礎(chǔ)上,針對(duì)新系統(tǒng)的開發(fā)是否具備必要性和可能性,對(duì)新系統(tǒng)的開發(fā)從技術(shù)、經(jīng)濟(jì)、社會(huì)的方面進(jìn)行分析和研究,以避免投資失誤,保證新系統(tǒng)的開發(fā)成功。而這種新增的網(wǎng)上信息發(fā)布功能恰是現(xiàn)代企業(yè)所需的。 再次,它使用戶的操作變得更簡(jiǎn)單。其次,它簡(jiǎn)化了系統(tǒng)的開發(fā)和維護(hù)。 第二層Web服務(wù)器將啟動(dòng)相應(yīng)的進(jìn)程來(lái)響應(yīng)這一請(qǐng)求,并動(dòng)態(tài)生成一串HTML代碼,其中嵌入處理的結(jié)果,返回給客戶機(jī)的瀏覽器。 B/S模式是一種以Web技術(shù)為基礎(chǔ)的新型的MIS系統(tǒng)平臺(tái)模式。程序員可只編寫一遍應(yīng)用程序或只更新一次,然后將它放到服務(wù)器上,隨后任何人就都可得到最新版本的應(yīng)用程序。而 JDBC 正是作為此種用途的機(jī)制。JDBC對(duì)Java程序員而言是API,對(duì)實(shí)現(xiàn)與數(shù)據(jù)庫(kù)連接的服務(wù)提供商而言是接口模型。Statement主要實(shí)現(xiàn)兩個(gè)功能:執(zhí)行SQL語(yǔ)句以及取得執(zhí)行結(jié)果。它提供了三項(xiàng)服務(wù)功能:一、與數(shù)據(jù)庫(kù)建立連接。 使用中間件的數(shù)據(jù)庫(kù)訪問三層結(jié)構(gòu)用戶對(duì)數(shù)據(jù)庫(kù)的存取權(quán)限認(rèn)證是中間件中完成,對(duì)數(shù)據(jù)庫(kù)的查詢、插入、更新和刪除操作等都封裝在中間件中,該中間件位于服務(wù)器端,中間件對(duì)數(shù)據(jù)庫(kù)進(jìn)行操作后,再將處理結(jié)果通過Web服務(wù)器返回到瀏覽器端用戶。簡(jiǎn)單地說(shuō),JDBC能完成下列三件事:1. 同一個(gè)數(shù)據(jù)庫(kù)建立連接;2. 向數(shù)據(jù)庫(kù)建立連接;3. 處理數(shù)據(jù)庫(kù)返回的結(jié)果。 5.具有很好的伸縮性,可跨越從運(yùn)行Windows 95/98的膝上型電腦到運(yùn)行Windows 2000的大型多處理器等多種平臺(tái)使用。例如,利用request對(duì)象,可以很容易地接收用戶在HTML表單中提交的信息。3. 硬件平臺(tái)和服務(wù)器無(wú)關(guān)性。而JavaBeans對(duì)應(yīng)的是Model,實(shí)現(xiàn)各個(gè)具體的應(yīng)用邏輯與功能。因?yàn)镴SP所有程序操作都在服務(wù)器端執(zhí)行,網(wǎng)絡(luò)上傳送給客戶端的僅是得到的結(jié)果。在傳統(tǒng)的網(wǎng)頁(yè)HTML文件(*.htm,*.html)中加入腳本片段和JSP標(biāo)記(Tag),構(gòu)成JSP網(wǎng)頁(yè)(*.jsp)。 系統(tǒng)開發(fā)方法目前,網(wǎng)絡(luò)應(yīng)用軟件運(yùn)行的模式主要有二類:Client/server模式,Browser/Web模式。它為廣大學(xué)生提供了一個(gè)自我測(cè)試和評(píng)價(jià)的環(huán)境?;贗nternet的自測(cè)考試系統(tǒng)正成為國(guó)內(nèi)外教育機(jī)構(gòu)的研究熱點(diǎn)之一。本科題的研究需要結(jié)合實(shí)踐,理解網(wǎng)頁(yè)開發(fā)技術(shù)和數(shù)據(jù)庫(kù)的基本知識(shí),學(xué)習(xí)相關(guān)開發(fā)工具和應(yīng)用軟件,熟悉網(wǎng)站建設(shè)的過程,熟練掌握網(wǎng)絡(luò)數(shù)據(jù)庫(kù)編程方法。JSP;My EclipseThe Implement and Design of records management system Java Enterprise pen questionsTesting SystemAbstractHigh technology and rapid development of puters, to bring more convenience. Coming era of widespread use of puters and network technology has gradually improved the lives of people already undergoing important changes. Information age, the structure of the quality of talent made newer and higher requirements, conduct business document questions facing education in selftest approach is an inevitable choice for the information age. Based on increased demand for education in selftest, the paper design and implement a corporate document JAVA Test System Test. This system enables system management, curriculum management, exam management, student management, paper management, teacher management, and other basic functions. At the same time, the system has three registry permissions are administrators, candidates and teachers. System uses the B / S development models to My Ecipse as a development platform, bined with JSP, JavaScript, Html and other languages ??to Tomcat as the server and the SQL Server 20
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