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外文翻译--ASP--网页制作新方法.doc

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外文翻译--ASP--网页制作新方法.doc

英文资料1ASPANewMethodtoMakeWebPagesAbstractThetechnologyofActiveServerPagesASPisspeedingtechnology.ThispaperprinciplemainlyintroducedthedifferencesbetweenthetechnologyofASPandthetechnologyofHTML,theworkprincipleofASPanditsapplicationinlineobject.TheapplicationofActiveXtechnologytoASP,andaconclusionaboutthecharacteristicsandfunctionsofASPwasdrawn.IntheendwelistedthesourceprogramofthetechnologyofASPappliedinactualprojectforreference.KeyWordsASP,HTML,WebServerASPisWebServersscriptenvironment,whichexplainsscriptinInternetandintranetstationsWebServer.Itcanexplainandexecuteeveryrequest,whicharesentbyIE,andthenresponsesandexecutesactive,interactiveandhighefficientWebServerappliedprogram.InconstructionanysuccessfulandpracticalstationWeb,ASPisessentialtoWebServer.1.ASPSandHTMLWhenitcomestoASP,wehavetotalkaboutanotherlanguage,inwhichweconstructionWebSiteneedHyperMetaTextLanguage,whichisshortforHTML.HTMLusuallydescribesapagesallbasicfactorsintextdescriptionlanguage.Allcontentandmodelshownbypagetousersareincludedinasmallerscriptfile.UsuallydesignersuseasseenasiscomplierssuchasFrontPage98,NetscapeGold3.0andsoondesignapageandthenuploadittoWebServer.AfterusingbrowserdownloadthisscriptfilefromWebServer,browserwillexplainscriptfileintocolorfulpage,whicharedesignedbyusers,itisenjoyedandreadbyusersautomatically.But,awebsiteonlyhavingHTMLpageisdull.Becauseusersbrowsethispageeverytime,theyseeallthesamethingsunlessdesignerrefreshesthispage.Atthesametime,asnothavinginterconnectedoperationwithusers.Nothavinginterfacedwithenoughdatabaseresource,thesewebstationscontentisverysingle.AlthoughWebappliedprogramwritteninCGItechnologycanbechangedintoactivewebpage,itcanonlybemadewithasingledataoperation,nothavinginterconnectioncapacity.Andhasveryhighandstrictrequesttodesigners.ItneedsmakingaCGIprogramforeveryacquirement,itsworkisverylargeanditsCodesarenotallsuccessfullyexecuted.WhenmanyusersvisitaCGIatthesametime,itwillmakesomeprogramcopyoperatedinserverpot,slowingdownserverasincreasingprogram,leadingtoslowdownusersvisiting.FortunatelyatpresentweownASP,usermaymakeselectedbrowsewithmuchpageinWebStation,anddesignsometableswiththispage,whicharefilledin英文资料2byuserthenobtainmoreinformationaboutuser,Ifwebserveranddatabaseserverinterfacehaveconnected,thenwecanseemoreandnewerinformation.ASPdesignsactivepage,itmayreceiveinformationwhichisreferredbyusers,andresponsesquickly.AmongthemdatacanchangedasactualstatementandnotneedpeoplerefreshWebPagebyselfcansatisfyapplicationrequest.ForexamplewhenwehavefilledintableandsendHTTPrequestinIE,itmayneedWebServerexecutesanappliedprogramdesignedbytable,notasimpleHTMLfile.Thisappliedprogramanalyzessomeinputteddata,andgetrespondedresultsusuallyareresultssetofdatabasesearchingbasedondifferentdataintobrowseinformofHTML.Dataindatabaseisvariableanytimebuttheappliedprogramsexecutedinserverneednotbechanged,webpageinformationobtainedbyvisitorwillkeepfreshallthesame.2.TheworkprincipleandconfigurationASPInservermachine,wemayapplyanASPhomepagewebservershouldresponsesthisHTTPrequestandexplainsthisappliedfile.WhenitmeetsanycompatiblescriptwithActiveXScriptingforexampleVBScriptandJavaScript,ASPcanaskproperscripttodealwithit.Ifscriptinstructionincludesrequestofvisitingdatabase,itcanconnectwiththebehinddatabasebyADOPBandODBC.Itmayexecutevisitingdatabasebydatabasevisitedmachine.ASPscriptisexplainedandexecutedinWebSite,itmaymakeproperHTMLhomepagebasedonvisiteddatabaseautomaticallytoresponsesusersrequest.WebServerresponsiveinallsendingandreceiving.Inpracticalapplication,whenASPmeetsscriptcommandofvisitingdatabase.itcantalkwithdatabaseADOActiveXDataObjectsandmakeexecuteresultscreateaHTMLpageavertedtoserverpottoresponseIEsapply.WhatwecanseepageinusersIEisshowninsingleHTML,forexample,contentofbehinddatabaseexpressedinformoftable.AsASPcombinatedwithJavaScriptandVBScript.itcanvisitActiveXcomponentbyprogrammingandhasthecapacityofproducedHTMLautomatically,soitisanefficientwayinconstructingactivewebsite.Instructure,ASPcommunicateddatabasebyODBCorADO,soitcanbeupcompatiblewithmuchdifferentdatabasesystem.Fordownlayer,HTMLproducedbyASPhaswideappliedforClientIE.ButWebserversupportedbyASPisverylittle,anditconfinetoseveralMicrosoftWebServer.TheirlowestversionsareWindowsNTServer4.0MicrosoftIISInternetInformationServer3.0WindowsNTWorkstation4.0MicrosoftPeerWebServices3.0Windows95MicrosoftPWSPersonalWebServer1.0,Win95ofChineseversionshouldsuitablewithPWSofChinese.3.ASPssixinsideobjectsandtheirapplicationASPisselfprovidewithsixinsideobjects,whicharecandirectlyusedby英文资料3ASPscript.TheyarerequestwaitingforusersinformationresponsedeliverinformationtouserserveprovidemethodandcharacterizesofvisitingservercookiesattachtosetobjectofRequestobjectandResponseobjectapplicationpreserveandusesomecommoninformationamongmanyhomepagesinanapplicationprogram.SessionpreserveandusesomecommoninformationamongmanyhomepagesinauserAmongthem,usinginsideobjectoneandtwocanrealizeWebsinteractivefunction,usinginsideobjectfiveandsixcansolvecompatibleapplicationproblem.OnemainlycharacteristicofASPiscomplierablecoherentapplicationprogram,whichcanshareinformationbetweensomepages.UsinginsideApplicationandSessionobjectcanrealizethesefunctions.Applicationobjectkeepsthesameinformationinanappliedprogramallcomponentsofthisappliedprogramcanshare.Inordertopreventitchangedbymanyusers,itprovideslockandunlockstwomethods.ForexampleApplication.Lockforbidsotheruserstochangeapplicationinformation.Application.Unlockpermitotheruserstochangeapplicationinformation.WecanuseSessionobjecthasanarrowerusagerangethanApplicationobject.Itkeepsonlyoneapplicationinformation,whichbelongstoonlyoneuser.ASPsapplicationprogrammayhaveonlyonehomepage,andmayalsohaveseveralhomepages.Allfileslieinonefalselocation.Sessionobjectcanletausershareallinformationinonehomepage.Whenuserfirstappliesforan.aspinanappliedprogram.ASPwillgivethisuseraSessionIDwhichcanidentityusersolo,thencanidentitydifferentusersinthesameappliedprogram.Cookiesobjectmainlyrecordsomedatainputbyuser.ItsmemorylocationisusersIE,andithasuseexpire,certainlydesignerscancontrolit.4.ASPandACTIVEXWhenwemakeWebwithASPtechnology,wehavetofollowwiththisprinciple.Itisthat,onlyincoherebetweenASPServerscriptandcomponentobjectmodel,canwemakeoutpracticalandusefulinformationsoftware.ASPscriptisaconnection,canconnectsomecomponentobjectswithsomecertaincharacteristicfunctionobjectstoformfinishsoftware.Thisindustrialprincipleissimilartotheprocessofhardwarefactoryproducingboardcard,thesecomponentobjectsareequivalenttochiphaveextendcircuit,butASPonlyconnectwithchip,thuscomponentobjectplayacentralrole.COM,whichisWindowssoftwarestandardbasedonbinary,developed,basedonOLEtechnologygradually.WecancommunicatebasedonCOMstandard英文资料4whenwritecomponentobjectindifferentlanguage.COMistechnologyandstandard.ItisnamedafterACTIVEXinbusiness.InmakingWeb,themostimportantisusingADOobjecttovisitdatabase.AfteruserloginonWeb,WebServerexecutesprogramofdatabaseservereloigningprogramautomatically,thenforsomelatterandcomplexrequestoccasionally,WebServerexplainsandexecutesVBScriptandJavaScriptstatementsinsideASPpagesautomatically,thenoperateSQLinquireandbackwardtheinquiredresultstousers.ADOActiveXDataObjectswhichisagoodspecialobjectsetofvisitingdatabaseprovideASPwithawholestationsitedatabasevisitingmethodand.Itcanserveforserverandofferhomepagecontentwithdatabaseinformation.ByexecutingSQLcommand,userscaninput,refreshanddeleteWebServersdatabaseinformationinIE.ADOusesinsideRecordSetsobjectasdatasmaininterface.ADOcanuseVBScriptandJavaScriptstatementtocontrolvisitingdatabase,andinputandseeinquireresults.ADOcanconnectmuchdatabasesupportbyODBC,forexample,SQLServer,oracleInformixandsoon.Inusing,atfirst,weneedmakeproperDSNdatasourcenameinODBCofcontrolboard.andchoicesystemdatasourcename,specifydriveprogramofuse,forexample,SQLServerinputDSN.Indatasourcenameandspecifyserveranddatabase.TheflowchartofWEBdatabasevisitingisshowninfollowingchartoneDesignerscanmakesomecharacteristiccomponentobjectthemselvesinrequiretofinishsomespecialjob,wecanwriteinVisualBasic,VisualC,Delphi,Javaandsoon.TherearetwoclassifyofcomponentobjectselfmakingOneis.dllfileproducedbyclassify.aftermachineregistered,itcanbeusedbySetobjectname"inASPscript.Inthisusingprocessobjectisworkinbehindserver.TheresultofprocessplaysfrontIEbyHTML,whichisproducedbysystemautomobile.Anotheris.ocxfile.UsuallytheseeableobjectActiveXcandirectlyimbeddedin.asphomepage,itneedsusingofHTMLtoinsertpage.Usuallyafterfinishproducecomponentproducedtoproducedto.cabfileinunloadedrequest.Inthisusingwayobjectshoulddownloadfromseveratfirst,andthenoperateinfrontIEofclient.Whendownloadingfirsttime,theirrelative.Dlland.ocxfilesshouldsetupandregisteratlocal.Reuselatter,wecanabstaindirectlywithoutdownloading.ThisiswhatActiveXisbetterthanJavaApplet.Fromthefarsight,thecombinationusingofASPandCOMobjectiscertainlyanewandcharacteristictechnology.Itismoreimportantthatgiveoutanewsoftwaredesignmethod.Hardwaretechnologymethodiswellappliedinto

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