外文文獻-java family account management system家庭收支管理系統(tǒng)

畢業(yè)設計外文文獻原文及譯文JAVAFAMILYACCOUNTMANAGEMENTSYSTEM家庭收支管理系統(tǒng)學生姓名學號系別計算機系專業(yè)計算機科學與技術指導教師2015年5月JAVAFAMILYACCOUNTMANAGEMENTSYSTEMIFJAVAIS,INFACT,YETANOTHERCOMPUTERPROGRAMMINGLANGUAGE,YOUMAYQUESTIONWHYITISSOIMPORTANTANDWHYITISBEINGPROMOTEDASAREVOLUTIONARYSTEPINCOMPUTERPROGRAMMINGTHEANSWERISNTIMMEDIATELYOBVIOUSIFYOURECOMINGFROMATRADITIONALPROGRAMMINGPERSPECTIVEALTHOUGHJAVAISVERYUSEFULFORSOLVINGTRADITIONALSTANDALONEPROGRAMMINGPROBLEMS,ITISALSOIMPORTANTBECAUSEITWILLSOLVEPROGRAMMINGPROBLEMSONTHEWORLDWIDEWEB1CLIENTSIDEPROGRAMMINGTHEWEBSINITIALSERVERBROWSERDESIGNPROVIDEDFORINTERACTIVECONTENT,BUTTHEINTERACTIVITYWASCOMPLETELYPROVIDEDBYTHESERVERTHESERVERPRODUCEDSTATICPAGESFORTHECLIENTBROWSER,WHICHWOULDSIMPLYINTERPRETANDDISPLAYTHEMBASICHTMLCONTAINSSIMPLEMECHANISMSFORDATAGATHERINGTEXTENTRYBOXES,CHECKBOXES,RADIOBOXES,LISTSANDDROPDOWNLISTS,ASWELLASABUTTONTHATCANONLYBEPROGRAMMEDTORESETTHEDATAONTHEFORMOR“SUBMIT”THEDATAONTHEFORMBACKTOTHESERVERTHISSUBMISSIONPASSESTHROUGHTHECOMMONGATEWAYINTERFACECGIPROVIDEDONALLWEBSERVERSTHETEXTWITHINTHESUBMISSIONTELLSCGIWHATTODOWITHITTHEMOSTCOMMONACTIONISTORUNAPROGRAMLOCATEDONTHESERVERINADIRECTORYTHATSTYPICALLYCALLED“CGIBIN”IFYOUWATCHTHEADDRESSWINDOWATTHETOPOFYOURBROWSERWHENYOUPUSHABUTTONONAWEBPAGE,YOUCANSOMETIMESSEE“CGIBIN”WITHINALLTHEGOBBLEDYGOOKTHERETHESEPROGRAMSCANBEWRITTENINMOSTLANGUAGESPERLISACOMMONCHOICEBECAUSEITISDESIGNEDFORTEXTMANIPULATIONANDISINTERPRETED,SOITCANBEINSTALLEDONANYSERVERREGARDLESSOFPROCESSOROROPERATINGSYSTEMMANYPOWERFULWEBSITESTODAYAREBUILTSTRICTLYONCGI,ANDYOUCANINFACTDONEARLYANYTHINGWITHITHOWEVER,WEBSITESBUILTONCGIPROGRAMSCANRAPIDLYBECOMEOVERLYCOMPLICATEDTOMAINTAIN,ANDTHEREISALSOTHEPROBLEMOFRESPONSETIMETHERESPONSEOFACGIPROGRAMDEPENDSONHOWMUCHDATAMUSTBESENT,ASWELLASTHELOADONBOTHTHESERVERANDTHEINTERNETONTOPOFTHIS,STARTINGACGIPROGRAMTENDSTOBESLOWTHEINITIALDESIGNERSOFTHEWEBDIDNOTFORESEEHOWRAPIDLYTHISBANDWIDTHWOULDBEEXHAUSTEDFORTHEKINDSOFAPPLICATIONSPEOPLEDEVELOPEDFOREXAMPLE,ANYSORTOFDYNAMICGRAPHINGISNEARLYIMPOSSIBLETOPERFORMWITHCONSISTENCYBECAUSEAGIFFILEMUSTBECREATEDANDMOVEDFROMTHESERVERTOTHECLIENTFOREACHVERSIONOFTHEGRAPHANDYOUVENODOUBTHADDIRECTEXPERIENCEWITHSOMETHINGASSIMPLEASVALIDATINGTHEDATAONANINPUTFORMYOUPRESSTHESUBMITBUTTONONAPAGETHEDATAISSHIPPEDBACKTOTHESERVERTHESERVERSTARTSACGIPROGRAMTHATDISCOVERSANERROR,FORMATSANHTMLPAGEINFORMINGYOUOFTHEERROR,ANDTHENSENDSTHEPAGEBACKTOYOUYOUMUSTTHENBACKUPAPAGEANDTRYAGAINNOTONLYISTHISSLOW,ITSINELEGANTTHESOLUTIONISCLIENTSIDEPROGRAMMINGMOSTMACHINESTHATRUNWEBBROWSERSAREPOWERFULENGINESCAPABLEOFDOINGVASTWORK,ANDWITHTHEORIGINALSTATICHTMLAPPROACHTHEYARESITTINGTHERE,JUSTIDLYWAITINGFORTHESERVERTODISHUPTHENEXTPAGECLIENTSIDEPROGRAMMINGMEANSTHATTHEWEBBROWSERISHARNESSEDTODOWHATEVERWORKITCAN,ANDTHERESULTFORTHEUSERISAMUCHSPEEDIERANDMOREINTERACTIVEEXPERIENCEATYOURWEBSITETHEPROBLEMWITHDISCUSSIONSOFCLIENTSIDEPROGRAMMINGISTHATTHEYARENTVERYDIFFERENTFROMDISCUSSIONSOFPROGRAMMINGINGENERALTHEPARAMETERSAREALMOSTTHESAME,BUTTHEPLATFORMISDIFFERENTAWEBBROWSERISLIKEALIMITEDOPERATINGSYSTEMINTHEEND,YOUMUSTSTILLPROGRAM,ANDTHISACCOUNTSFORTHEDIZZYINGARRAYOFPROBLEMSANDSOLUTIONSPRODUCEDBYCLIENTSIDEPROGRAMMINGTHERESTOFTHISSECTIONPROVIDESANOVERVIEWOFTHEISSUESANDAPPROACHESINCLIENTSIDEPROGRAMMING2PLUGINSONEOFTHEMOSTSIGNIFICANTSTEPSFORWARDINCLIENTSIDEPROGRAMMINGISTHEDEVELOPMENTOFTHEPLUGINTHISISAWAYFORAPROGRAMMERTOADDNEWFUNCTIONALITYTOTHEBROWSERBYDOWNLOADINGAPIECEOFCODETHATPLUGSITSELFINTOTHEAPPROPRIATESPOTINTHEBROWSERITTELLSTHEBROWSER“FROMNOWONYOUCANPERFORMTHISNEWACTIVITY”YOUNEEDTODOWNLOADTHEPLUGINONLYONCESOMEFASTANDPOWERFULBEHAVIORISADDEDTOBROWSERSVIAPLUGINS,BUTWRITINGAPLUGINISNOTATRIVIALTASK,ANDISNTSOMETHINGYOUDWANTTODOASPARTOFTHEPROCESSOFBUILDINGAPARTICULARSITETHEVALUEOFTHEPLUGINFORCLIENTSIDEPROGRAMMINGISTHATITALLOWSANEXPERTPROGRAMMERTODEVELOPANEWLANGUAGEANDADDTHATLANGUAGETOABROWSERWITHOUTTHEPERMISSIONOFTHEBROWSERMANUFACTURERTHUS,PLUGINSPROVIDEA“BACKDOOR”THATALLOWSTHECREATIONOFNEWCLIENTSIDEPROGRAMMINGLANGUAGESALTHOUGHNOTALLLANGUAGESAREIMPLEMENTEDASPLUGINS3SCRIPTINGLANGUAGESPLUGINSRESULTEDINANEXPLOSIONOFSCRIPTINGLANGUAGESWITHASCRIPTINGLANGUAGEYOUEMBEDTHESOURCECODEFORYOURCLIENTSIDEPROGRAMDIRECTLYINTOTHEHTMLPAGE,ANDTHEPLUGINTHATINTERPRETSTHATLANGUAGEISAUTOMATICALLYACTIVATEDWHILETHEHTMLPAGEISBEINGDISPLAYEDSCRIPTINGLANGUAGESTENDTOBEREASONABLYEASYTOUNDERSTANDAND,BECAUSETHEYARESIMPLYTEXTTHATISPARTOFANHTMLPAGE,THEYLOADVERYQUICKLYASPARTOFTHESINGLESERVERHITREQUIREDTOPROCURETHATPAGETHETRADEOFFISTHATYOURCODEISEXPOSEDFOREVERYONETOSEEANDSTEALGENERALLY,HOWEVER,YOUARENTDOINGAMAZINGLYSOPHISTICATEDTHINGSWITHSCRIPTINGLANGUAGESSOTHISISNOTTOOMUCHOFAHARDSHIPTHISPOINTSOUTTHATTHESCRIPTINGLANGUAGESUSEDINSIDEWEBBROWSERSAREREALLYINTENDEDTOSOLVESPECIFICTYPESOFPROBLEMS,PRIMARILYTHECREATIONOFRICHERANDMOREINTERACTIVEGRAPHICALUSERINTERFACESGUISHOWEVER,ASCRIPTINGLANGUAGEMIGHTSOLVE80PERCENTOFTHEPROBLEMSENCOUNTEREDINCLIENTSIDEPROGRAMMINGYOURPROBLEMSMIGHTVERYWELLFITCOMPLETELYWITHINTHAT80PERCENT,ANDSINCESCRIPTINGLANGUAGESCANALLOWEASIERANDFASTERDEVELOPMENT,YOUSHOULDPROBABLYCONSIDERASCRIPTINGLANGUAGEBEFO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