【正文】
我們必須區(qū)別一個(gè)記錄和一個(gè)記錄的事例,當(dāng)談?wù)摰饺w人員的記錄時(shí)它是一個(gè)真正的記錄類型,而不是與它相結(jié)合的數(shù)據(jù)值。使用JSP技術(shù)可以很方便地將一大堆JSP頁面組合成為一個(gè)Web應(yīng)用程序。這樣,當(dāng)網(wǎng)站的訪問者請(qǐng)求一個(gè)JSP頁時(shí),在它不知道的情況下,一個(gè)已經(jīng)生成的、預(yù)編譯過的Servlet實(shí)際上將完成所有的工作,非常隱蔽而又高效。Java開發(fā)者不僅可以創(chuàng)建和使用JavaBeans,還能在JSP頁中使用Java語言來更精密地控制基于底層JavaBeans的表達(dá)邏輯。簡而言之,隨著Web應(yīng)用程序的復(fù)雜性不斷提升,以頁面為中心的開發(fā)方式的局限性變得明顯起來。C. JSP的機(jī)制要理解JSP怎樣聯(lián)合以上各種所提到的技術(shù)的優(yōu)點(diǎn),來輕而易舉地實(shí)現(xiàn)各種效果,用戶必須首先了解“組件為中心的網(wǎng)頁開發(fā)”和“頁面為中心的網(wǎng)頁開發(fā)”的區(qū)別。分開內(nèi)容和顯示邏輯的好處是,更新頁面外觀的人員不必懂得Java代碼,而更新JavaBeans類的人員也不必是設(shè)計(jì)網(wǎng)頁的行家里手,就可以用帶JavaBeans類的JSP頁面來定義Web模板,以建立一個(gè)由具有相似的外觀的頁面組成的網(wǎng)站。本文將介紹JSP相關(guān)的知識(shí),以及JavaBean的相關(guān)內(nèi)容,當(dāng)然都是比較粗略的介紹其中的基本內(nèi)容,或者說僅僅是一個(gè)Guide,如果讀者需要更詳細(xì)的信息,請(qǐng)參考相應(yīng)的JSP的書籍。 hand over with each other, and the manifestation result in dynamic state bornly, mixing with the HTML page of the static state HTML Beans can be JavaBeans or module of , the more plicated claim model can see make from is request other JSP pages of the page call sign or Java Servlets.The engine of JSP wants to chase the code of Java that the label of JSP, code of Java in the JSP page even all converts into the big piece together with the static state HTML contentses codes piece was organized the Java Servlet that customer can not see to go to by the engine of JSP, then the Servlet edits and translate them automatically byte code of , the visitant that is the website requests a JSP page, under the condition of it is not knowing, an already born, the Servlet actual full general that prepared to edit and translate pletes all works, very concealment but again and Servlet is to edit and translate of, so the code of JSP in the web page does not need when the every time requests that page is engine of JSP need to be edit and translate after Servlet the code end is modify only once, then this Servlet that editted and translate can be carry in view of the fact JSP engine auto is born to edit and translate the Servlet also, need not procedure member begins to edit and translate the code, so the JSP can bring vivid sex that function and fast developments need that you are efficiently.Compared with the traditional CGI, the JSP has the equal , on the speed, the traditional procedure of CGI needs to use the standard importation of the system to output the equipments to carry out the dynamic state web page born, but the JSP is direct is mutually the connection with say for the CGI, each interview needs to add to add a progress to handle, the progress build up and destroy by burning constantly and will be a not small burden for calculator of be the server of next in order, the JSP is specialized to develop but design for the Web of, its purpose is for building up according to the Web applied procedure, included the norm and the tool of a the whole the technique of JSP can bine a lot of JSP pages to bee a Web application procedure very expediently.Database Management SystemA database may be defined as a collection of interrelated data stored together with as little redundancy as possible to serve one or more applications in an optimal fashion。硬件平臺(tái):CPU:主頻 ;內(nèi)存:512MB以上。程序簡潔,算法可行,運(yùn)行情況 良好。6. 第14 周答辯,要求制作PPT。s machine/ server the and ActiveX were published the pany to expand to apply the procedure developer for Java and Windows to use to e to develop the plicated procedure quickly by the fast application procedure development( RAD) techniques make the expert in the some realm be able to write the module for the perpendicular application plait in the skill area, but the developer can go fetch the usage directly but need not control the expertise of this realm.Be a kind of take module as the central development terrace, the JSP with the JavaBeans and Enterprise JavaBeans( EJB) module includes the model of the business and the data logic for foundation, provide a great deal of label and a script terraces to use to e to show in the HTML page from the contents of JavaBeans creation or send a present in of the property that regards the module as the center of the JSP, it can drive Java and not the developer of Java uses the developer of Java can pass the JSP label( Tags) to use the JavaBeans that the deluxe developer of Java developer of Java not only can establish and use the JavaBeans, but also can use the language of Java to e to control more accurately in the JSP page according to the expression logic of the first floor JavaBeans. See now how JSP is handle claim of basic claim model, a claim directly was send to JSP page code of JSP controls to carry on hour of the logic processing and module of JavaBeanses39。按照Sun的說法,JSP能夠適應(yīng)市場上包括Apache WebServer、%的服務(wù)器產(chǎn)品。作為一種基于文本的、以顯示為中心的開發(fā)技術(shù),JSP提供了Java Servlet的所有好處,并且,當(dāng)與一個(gè)JavaBeans類結(jié)合在一起時(shí),提供了一種使內(nèi)容和顯示邏輯分開的簡單方式。按照J(rèn)SP規(guī)范書寫,和Java沒有任何關(guān)系的Scriptlet也是可以的,不過,由于JSP的強(qiáng)大功能主要在于能和JavaBeans、Enterprise JavaBeans一起工作,所以即使是Scriptlet部分不使用Java,編譯成的執(zhí)行代碼也應(yīng)該是與Java相關(guān)的。HTML和圖形設(shè)計(jì)師把它們的設(shè)計(jì)的實(shí)施工作交給了Web編寫者,使他們不得不加倍工作—— 常常是手工編寫,因?yàn)闆]有合適的工具可以把服務(wù)器端腳本與HTML內(nèi)容結(jié)合起來。非Java開發(fā)者可以通過JSP的標(biāo)簽(Tags)來使用高級(jí)Java開發(fā)者創(chuàng)建的JavaBeans。這些代碼塊被JSP引擎組織到用戶看不到的Java Servlet中去,然后Servlet自動(dòng)把它們編譯成Java字節(jié)碼。其次,JSP是專門為Web開發(fā)而設(shè)計(jì)的,其目的是為了建立基于Web的應(yīng)用程序,包含了一整套的規(guī)范和工具。邏輯數(shù)據(jù)庫的描述叫做一個(gè)模式。在關(guān)系模型中,實(shí)體和他們的關(guān)系用二維表格表示,每一個(gè)表格代表一個(gè)實(shí)體,其值是有一定范圍,最終用戶被提供一個(gè)簡單數(shù)據(jù)模型,他或她需求由信息內(nèi)容的描述而明確的表達(dá),不用表示面向系統(tǒng)的各方面復(fù)雜的情況,關(guān)系數(shù)據(jù)模型似乎用戶所看到的,但不必知道物理的實(shí)現(xiàn)。帶有數(shù)據(jù)庫的計(jì)算機(jī)系統(tǒng),除具備一般的硬件、軟件外,必須有用以存儲(chǔ)大量數(shù)據(jù)的直接存取存儲(chǔ)設(shè)備、管理并控制數(shù)據(jù)庫的軟件——數(shù)據(jù)庫管理系統(tǒng)(DBMS)、管理數(shù)據(jù)庫的人員——數(shù)據(jù)庫管理員 (DBA)。與此同時(shí),信息化社會(huì)中電子通知和郵件的形式也正逐步替代口頭通知、開會(huì)談?wù)摰刃实拖碌男问健R簿褪钦f,基于計(jì)算機(jī)的系統(tǒng)的工作流程直接借簽了人工系統(tǒng)的工作流程。在每個(gè)社會(huì)團(tuán)體的每個(gè)專業(yè)領(lǐng)域都能發(fā)現(xiàn)數(shù)據(jù)處理系統(tǒng)或信息系統(tǒng)的潛力。大學(xué)和學(xué)院包括入學(xué)管理,注冊(cè)和分班,計(jì)算機(jī)輔助教學(xué),發(fā)展校友,安置服務(wù),寄宿管理和財(cái)務(wù)補(bǔ)助等等。在與設(shè)計(jì)組交換意見時(shí),用戶管理人員必須十分清楚應(yīng)該使信息滿足哪一級(jí)的管理要求。事務(wù)級(jí)事務(wù)級(jí)的人員主要關(guān)心一個(gè)信息管理系統(tǒng)的事務(wù)處理部分。這種信息要求通常是定期的,但有時(shí)也有隨時(shí)的,經(jīng)理們要求“如果…則…”一類的報(bào)告。3 研究目標(biāo)及內(nèi)容通過調(diào)查,根據(jù)人事管理的基本需求,一個(gè)大公司中運(yùn)作的完整的系統(tǒng)需要完成以下功能:詳細(xì)的企業(yè)的員工信息管理;企業(yè)員工獎(jiǎng)懲信息管理;企業(yè)員工人員調(diào)動(dòng)信息管理;企業(yè)員工考勤管理;設(shè)置企業(yè)員工薪酬管理;人才招聘管理及企業(yè)人才庫管理功能;企業(yè)員工培訓(xùn)管理;提供系統(tǒng)用戶管理功能。它是功能豐富的J2EE集成開發(fā)環(huán)境,包括了完備的編碼、調(diào)試、測試和發(fā)布功能,完整支持HTML, Struts, JSF, CSS, Javascript, SQL, Hibernate。這里的訣竅是,當(dāng)配置正確時(shí),Apache 為HTML頁面服務(wù),而Tomcat 實(shí)際上運(yùn)行JSP 頁面和Servlet。除了具有許多其它數(shù)據(jù)庫所不具備的功能和選擇之外,MySQL數(shù)據(jù)庫是一種完全免費(fèi)的產(chǎn)品,用戶可以直接從網(wǎng)上下載.MySQL數(shù)據(jù)庫主要有以下特點(diǎn)。MySQL強(qiáng)大的數(shù)據(jù)加密和解密功能,可以保證敏感數(shù)據(jù)不受未經(jīng)授權(quán)的訪問。通過對(duì)系統(tǒng)進(jìn)行一系列的需求分析、設(shè)計(jì)、編碼、測試等工作,使系統(tǒng)實(shí)現(xiàn)了對(duì)企業(yè)員工信息的查看,添加,修改,刪除,以及搜索的功能