JSP技术 ---外文文献.docx
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JSP技术 ---外文文献.docx
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外文文献
JSPTechnologyandServlets
JSPprofile
JSP(JavaServerPages)isinitiatedbySunMicrosystems,Inc.,withmanycompaniestoparticipateintheestablishmentofadynamicwebpagetechnicalstandards.JSPtechnologysomewhatsimilartoASPtechnology,itisinthetraditionalHTMLwebpagedocument(*・htm,*.html)toinserttheJavaprogrammingparagraph(Scriptiet)andJSPtag(tag),thusJSPdocuments(*.jsp).UsingJSPdevelopmentoftheWebapplicationiscrossthatcanrunonLinux,isalsoavailableforotheroperatingsystems.
JSPtechnologytousetheJavaprogramminglanguagepreparedbythecategoryofXMLtagsandscriptlets,toproducedynamicpagespackageprocessinglogic.Pagealsovisitbytagsandsciptletsexistintheservicessideoftheresourcesoflogic.JSPpagelogicandwebpagedesignanddisplayseparation,supportreusablecomponent-baseddesign,Web-basedapplicationdevelopmentisrapidandeasy.
WebserverinthefaceofvisitsJSPpagerequest,thefirstinpiementationoftheproceduresof,andthentogetherwiththeresultsoftheimplementationofJSPdocumentsinHTMLcodewiththereturntothecustomer.InserttheJavaprogrammingoperationofthedatabasecanbereorientedwebsites,inordertoachievetheestablishmentofdynamicpagesneededtofunction.JSPandJavaServlet,isintheimplementationoftheserver,usuallyreturnedtotheclientisanHTMLtext,aslongastheclientbrowserwillbeabletovisit.
JSP1.0specificationofthefinalversionislaunchedinSeptember1999,Decemberhasintroduced1.1specifications.AtpresentrelativelynewisJSP1.2norms,JSP2.0normsofthedrafthasalsobeenintroduced.JSPpagesfromHTMLcodeandJavacodeembeddedinoneoftheconq)onents.
JSscriptlanguagesynopsis
JSisjavascrip,JavascriptisonekindthesciptlanguagewhichcomesbytheNetscapeLiveScrq)tdevelopment,themainpurposeistosolvetheserverterminallanguage,forinstancePerl,carry-overspeedquestion.Atthattimeservedtheendtoneedtocarryontheconfirmationtothedata,becausethenetworkspeedwasquiteslow,onlythen28.8kbps?
theconfirmationstepwaste'stimeweretoomany.ThereforeNetscapebrowserNavigatorhasjoinedJavascipt,hasprovidedthedataconfirmationbasicfunction.
TheJavaScriptofficialnameis"ECMAScript".ThisstandardbyECMAorganizationdevelopmentandmaintenance.ECMA262istheofficialJavaSciptstandard.ThisstandardbasedonJavaScript(Netscape)andJScipt(Microsoft).Netscape(Navigator2.0)BrendanEichhasinventedthislanguage,startedfrom1996,alreadyappearedinallNetscapeandintheMicrosoftbrowser.TheECMA262developmentbeganin1996,in1997July,theECMAgeneralmeetinghasaccq)teditsfirstedition.
Thesciptusesonespecificdescriptivelanguage,restsoncertainformcompilationtobepossibletheexecutiondocument,isalsocalledasgreatorthebatchrundocument.Thesciptusuallymaytransfertemporarilybytheapplicationprocedureandcarryout.Eachkindofsciptpresentwidelyisappliedinthehomepagedesign,becausethesciptnotonlymayreducethehomepagethescaleandraisesthehomepagebrowsingspeed,moreovermayenrichthehomepageperformance,likeanimation,soundandsoon.Citesamostcommonexample,whenweclickinthehomepagetheEmailaddresscantransferOutlookExpressortheFoxmailthiskindofmailsoftwareautomatically,isrealizesthroughthesciptfunction.Alsobecauseofscriptthesecharacteristics,thehumanwhoharborsulteriormotivesbysomeareoftenusing.Forexamplejoinssomedestructioncomputersystem'sorderinthescript,likethisworksastheuserbrowsinghomepage,oncetransfersthiskindofscript,willthencausetheuserthesystemtocomeundertheattack.Thereforetheusershouldactaccordingtovisitshomepagethetrustdegreeselectivesecurityrank,speciallyregardingtheseitselfcontentontheillegalhomepage,donotpermittheusescripteasily.Through"thesafeestablishment95thedialogbox,thechoice"thescript”imderoptioneachkindofestablishmentmaywitheaserealizetosciptbeingforbidandbeginsusing.
JSPandServlets
ThetechnologyofJSPandServletisthemostimportanttechnologywhichuseJava
technologytoexploitrequestofserver,anditisalsothestandardwhichexploitbusinessapplication.Javadevelopersprefertouseitforavarietyofreasons,oneofwhichisalreadyfamiliarwiththeJavalanguageforthedevelopmentofthistechnologyareeasytolearnJavatotheotherisnapreparation,runeverywhere"tobringtheconceptofWebapplications,Toachievea“one-preparedeverywhererealized.nAndmoreimportantly,iffollowedsomeoftheprinc»lesofgooddesign,itcanbesaidofsq)aratingandcontenttocreatehigh-quality,reusable,easytomaintainandmodifytheapplication.Forexanple,i
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