JSP技术 ---外文文献Word格式文档下载.docx

JSP技术 ---外文文献Word格式文档下载.docx

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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