外文翻譯 - 基于mvc模式的圖書(shū)館信息管理系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)_第1頁(yè)
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1、0外文原文TheDesignRealizationofLibraryMISBasedonMVCKeywds:MVCmodelJSPServletsJavabeansAbstract.MVCisatypicalsoftwarearchitecturemodelThepaperstatesthedevelopmentprincipleadvantagesoftheMVCpatterndiscussesthesoftwaredevelopme

2、ntprocessbasedontheMVCpatterndesignsaWebapplication—librarymanagementsystem.OnthebasisofintroducingbooksmanagementsystemthispaperdescribesthesystemdesignimplementationmethodbasedonMVCpattern.TheuseofMVCmodelimprovesmaint

3、ainabilityreusabilityofthesystem.INTRODUCTIONWiththerapidincreaseofthewkapplicationsMVCparadigmisaveryadvanceddesignideafWebapplicationdevelopment.Nomatterwhichlanguageyouchoosenomatterhowcomplextheapplicationsareitcanpr

4、ovidethemostbasicanalysismethodftheapplicationmodelstructuralprovideacleardesigningfproductsprovidecanonicalreferencefsoftwareengineering.ThisarticleraisesmanagementsystembasedonMVCparadigmonthebasisofresearchonlibraryma

5、nagementsystem.MVCseparatestheinputprocessingoutputofanapplicationaccdingtotheModelViewControllerthatisthreetierdesignmode(namelymodellayerviewlayercontrollayer).Itisnowwidelyusedinsoftwarearchitecturemodel.Thepaperusest

6、heJSPJavaBeansServletJDBCtechnologiestorealizetheMVCarchitecture.DisplayingWebpagesisusingJSPrealizingbusinessmodelsisusingJavaBeansControllingthedatatransmissionfunctioncallbetweenfegroundbackgroundisusingServletAccessi

7、ngdatabaseisusingJDBCstingdataisusingthedatabase.MVCDESIGNMODELMVCwasfirstdescribedin1979byTrygveReenskaugthenwkingonSmalltalkatXeroxPARC.Model–View–Controller(MVC)isasoftwarearchitecturecurrentlyconsideredanarchitectura

8、lpatternusedinsoftwareengineering.Thepatternisolates“domainlogic“(theapplicationlogicftheuser)fromtheuserinterface(inputpresentation)2B.thecontrolflowofMVCThoughMVCcomesindifferentflavscontrolflowisgenerallyasfollows:(1)

9、Theuserinteractswiththeuserinterfaceinsomeway(usuallytheviewbutnotnecessarily)fexamplepressesamousebutton.(2)Thecontrollerhlestheinputeventfromtheuserinterfaceoftenviaaregisteredhlercallbackconvertstheeventintoappropriat

10、euseractionunderstablefthemodel.(3)Thecontrollernotifiesthemodeloftheuseractionpossiblyresultinginachangeinthemodelsstate.(Fexamplethecontrollerupdatestheusersshoppingcart.)(4)Aviewqueriesthemodelindertogenerateanappropr

11、iateuserinterface(fexampletheviewliststheshoppingcartscontents).(5)Theviewgetsitsowndatafromthemodel.Insomeimplementationsthecontrollermayissueageneralinstructiontotheviewtorenderitself.Inotherstheviewisautomaticallynoti

12、fiedbythemodelofchangesinstate(Observer)whichrequireascreenupdate.Theuserinterfacewaitsffurtheruserinteractionswhichrestartsthecycle.C.theadvantagesofMVC(1)Benefittodivisiondeployment.TodevelopapplicationusingMVCdesignpa

13、tternpersonneldivisionofthedifferentfunctionsisveryclear.TousetheexampleofthedevelopmentofWebapplicationinJAVAlanguageJavaprogrammersfocusonbusinesslogicinterfaceprogrammer(HTMLJSPdevelopers)willjustconcentrateonthepagep

14、erfmancefms.(2)Increasethereuseoftheapplication.FthesameWebapplicationtheclientsmayusemultiplewaystoaccess.TheycanaccessnotonlybyHTMLbrowserofthecomputerbutalsobyWAPbrowserofthemobiletelephone.Butnomatterbywhatkindofacce

15、ssmodethebusinesslogicbusinessprocessoftheapplicationisthesameyouneedtochangetheconcreteimplementationwayofthepresentationlayer.MVCcansolvethisproblemeasilybecauseitrealizedtheseparationofthebusinessview.(3)Reducecouplin

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