基于改進(jìn)型mvc設(shè)計(jì)模式的人力資源規(guī)劃系統(tǒng)的研發(fā)-畢業(yè)論文

1、基于改進(jìn)型MVC設(shè)計(jì)模式的人力資源規(guī)劃系統(tǒng)的研發(fā)摘要隨著Inter技術(shù)及人力資源規(guī)劃系統(tǒng)的快速發(fā)展與普及，構(gòu)建基于Web人力資源規(guī)劃系統(tǒng)的復(fù)雜度和規(guī)模都在不斷增加和擴(kuò)大，傳統(tǒng)的MVC（模型、視圖、控制器）設(shè)計(jì)模型已經(jīng)不能滿足大規(guī)模的web應(yīng)用系統(tǒng)的開(kāi)發(fā)，因此，高效靈活地實(shí)現(xiàn)愈來(lái)愈復(fù)雜的Web應(yīng)用，就需要一種靈活、能被復(fù)用的系統(tǒng)框架。設(shè)計(jì)基于MVC設(shè)計(jì)模式的改進(jìn)型系統(tǒng)框架已經(jīng)成為當(dāng)前大型企業(yè)在開(kāi)發(fā)Web應(yīng)用系統(tǒng)時(shí)的研究重點(diǎn)。首先討論當(dāng)前W

2、eb應(yīng)用開(kāi)發(fā)中最流行的框架之一——基于Struts實(shí)現(xiàn)的MVC設(shè)計(jì)框架。Struts是Apache軟件組織開(kāi)發(fā)的開(kāi)放源代碼的Web應(yīng)用程序框架，它的本質(zhì)就是在JSPModel2的基礎(chǔ)上實(shí)現(xiàn)的一個(gè)MVC框架，滿足J2EE規(guī)范。在Web應(yīng)用開(kāi)發(fā)中，Struts框架主要是針對(duì)表示層設(shè)計(jì)的，沒(méi)有在建立模型組件方面做深入研究，對(duì)于后端邏輯層的支持不是很強(qiáng)。其次，Web應(yīng)用程序的客戶端和服務(wù)器端以HTTP協(xié)議進(jìn)行通信，而HTTP協(xié)議是一種無(wú)狀態(tài)連接

3、協(xié)議，這種無(wú)狀態(tài)連接很難將更改通知視圖。為此在Struts框架的基礎(chǔ)上提出了一個(gè)合理整合Servlet、JSP和JavaBean多種技術(shù)的改進(jìn)型MVC（IMVC）應(yīng)用框架。IMVC應(yīng)用框架在具體設(shè)計(jì)和實(shí)現(xiàn)中，對(duì)業(yè)務(wù)層中的模型優(yōu)化細(xì)分為三層，即數(shù)據(jù)訪問(wèn)對(duì)象、業(yè)務(wù)對(duì)象Bean和業(yè)務(wù)代表，進(jìn)一步向客戶端隱藏模型的底層組件及其變化，降低模塊間的耦合度，提高模型組件的重用性，并通過(guò)對(duì)業(yè)務(wù)對(duì)象Bean的合理分類與設(shè)計(jì)，減少客戶端遠(yuǎn)程調(diào)用的數(shù)目，從而

4、提高網(wǎng)絡(luò)訪問(wèn)速度。采用Java映射配置類來(lái)實(shí)現(xiàn)Model與View的映射，視圖根據(jù)事務(wù)邏輯模塊處理的結(jié)果生成返回至客戶端的頁(yè)面。控制器采用主輔控制器的方法，主控制器使用Servlet技術(shù)實(shí)現(xiàn)，它只負(fù)責(zé)截獲客戶端的請(qǐng)求，并根據(jù)請(qǐng)求參數(shù)通過(guò)輔助控制器AbstractWiththerapiddevelopmentpopularizationoftheIntertechnologyHumanResourcePlanningManagementS

5、ystemthecomplexityscaleoftheResourcePlanningManagementSysteminconstructingWebapplicationisincreasing.ThetraditionalMVCdesignpatternhasnotsatisfiedthemultitierwebarchitecture.Soindertorealizethememewebarchitectureefficien

6、tlyflexiblyitisrequiredthatamatureflexiblereusablesystemframe.DesigningtheimprovedsystemframethatisbasedonMVCdesignpatternhasbecomeaheatedimptantareaintheresearchofcomputerapplicationamongthebigenterprises.Firstwediscuss

7、MVCdesignpatternbasedonstruts＿oneofthemostpopularframewksinWebapplicationdevelopmentatpresent.StrutsdevelopedbyApachesoftwareganizationisanopensourcecodefWebapplicationprogramframewk.ItisaMVCframewkthatisrealizedonthebas

8、isofJSPModel2whichmeetsthenmofJ2EE.IntheexploitationofWebapplicationstrutsframeismainlydesignedfviewlayers.Ithasnotdonedeepresearchonfmingmodelwhichcannotstronglysupptthebackendlogiclayer.Secondlythecommunicationbetweenc

9、lientserveroftheWebapplicationprogramisrealizedthroughtheHTTPprotocolwhiletheHTTPprotocolisanonstateconnectionwhichfindsitdifficulttoinfmtheviewlayer.TherefeonthestrutsframeIofferanIMVCapplicationframeintegratingseveralt

10、echnologiesi.e.ServletJSPJavaBean.InthedesignrealizationofIMVCthemodelpurificationinthebusinesslayersisdividedintothreelayersthatisdatabasethebusinessobjectbeans.businessrepresentative.Ithidesthegroundcomponentschangesof

11、themodeltotheclientreducesthecouplingdegreeamongmodelsincreasesthereuseofmodelcomponents.Togetherwiththereasonableclassificationdesignofthebusinessobjectbeans.itcutsthedatausedbyremoteclientsothatitspeedsthewetvisit.Them