JSP技术外文文献.docx
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JSP技术外文文献.docx
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JSPandWEBtechnology
KathySierra,BertBates
1JSPIntroduction
JSP(JavaServerPages)isaJava-basedscriptingtechnology.IsadvocatedbySunMicrosystemsInc.,togetherwithanumberofcompaniesinvolvedinthe
establishmentofadynamicwebpagetechnologystandards.JSPtechnologyis
somewhatsimilartoASPtechnology,ItisatraditionalHTMLpagefile(*.htm,*.html)toinsertJavaprogramsegment(Scriptlet)andJSPtag(tag),ToformtheJSPfile(*jsp).WebdevelopmentwithJSPisacross-platformapplicationsthatcanrununderLinux,butalsoinotheroperatingsystems.IntheJSPofthemanyadvantages,oneofwhichisthatitwillbeHTMLencodedWebpagefromthebusinesslogic
separatedeffectively.JSPaccesswithreusablecomponents,suchasServlet,
JavaBeanandJava-basedWebapplications.JSPalsosupportsdirectlyintheWebpageembeddedJavacode.JSPcanbeusedtwowaystoaccessdocuments:
JSPdocumentssentbythebrowserrequest,therequestsenttotheServlet.JSP
technologyusesJavaprogramminglanguage,XML-typetagsandscriptlets,tohaveapackagedealwiththelogicofdynamicpages.Pagetagsandscriptletscanalso
existintheserveraccesstotheresourcesoftheapplicationlogic.JSPlogicandWebpagedesignanddisplayisolatedandsupportreusablecomponent-baseddesign,
Web-basedapplicationsmorequicklyandeasilydeveloped.
TheWebserverwhenmeetsvisitstheJSPhomepagetherequest,firstcarriesoutsegment,willthencarryouttheresultcodetoreturntogetherwithJSPinthedocumentHTMLforthecustomer.TheinsertionJavasegmentmayoperatethe
database,againthedirectionalhomepageandsoon,realizesthefunctionwhichtheestablishmentdynamichomepageneeds.JSPandJavaServletarethesame,isintheserverendexecution,usuallyreturnstothisclientsideisaHTMLtext,therefore
clientside,solongashasthebrowsertobeabletoglanceover.
TheJSPpageiscomposedoftheHTMLcodeandtheinsertingJavacode.TheserverinthepagebytheclientsidewasrequestedthatlaterwillcarryonprocessingtotheseJavacode,willthenproducetheHTMLpagewillreturngivestheclientsidethebrowser.JavaServletistheJSPtechnologybase,moreoverthelarge-scaleWebapplicationprocedure'sdevelopmentneedsJavaServletandtheJSPcoordination
cancomplete.JSPhadtheJavatechnologysimplyeasytouse,complete
object-oriented,hadtheplatformindependency,andsafereliable,mainlyfacedInternet'sallcharacteristics.
2JSPcomputingtechnique
Tocarryonthedynamicwebsiteconvenientlyfastthedevelopment,JSPhasmadetheimprovementinthefollowingseveralaspects,causesittobecomebuildsthecrossplatformfastthedynamicwebsitefirstchoiceplan.
2.1carriesonthecontentproductionandthedemonstrationseparates
WiththeJSPtechnology,theWebpagedevelopmentpersonnelmayuseHTMLortheXMLmarkingdesignandtheformattedfinalpage,andusestheJSPmarkingorthetootsyproducesonpage'sdynamiccontentoriginally.Productioncontent's
logicissealedinmarksandintheJavaBeansmodule,andtiesupinthescript,allscriptsinserverendmovement.Becausecorelogicissealedinmarksandin
JavaBeans,thereforetheWebadministrativepersonnelsandthepagedesigner,caneditandusetheJSPpage,butdoesnotaffectthecontenttheproduction.Inthe
serverend,theJSPengineexplainedthattheJSPmarkingandthescript,producethecontentwhichrequested,and(orXML)page'sformtransmitstheresultbyHTML
thebrowser.Thisbotharehelpfulintheauthorprotectsowncode,andcanguaranteeanybasedontheHTMLWebbrowser'scompleteusability.
2.2mayentrustwithheavyresponsibilitythemodule
TheoverwhelmingmajorityJSPpagereliesonmayentrustwithheavy
responsibility,thecrossplatformmodule(JavaBeansorEnterprisetheJavaBeansmodule)carriesoutcomplexprocessingwhichtheapplicationprocedurerequests.
Thedevelopmentpersonnelcanshareandexchangetheexecutionordinaryoperationthemodule,orcausesthesemodulesusesformoreusersandthecustomer
association.Hasacceleratedtheoveralldevelopmentprocessbasedonmodule's
method,andcauseseachkindoforganizationobtainsbalancedintheirexistingskillandintheoptimizedresultdevelopmentendeavor.
2.3usesmarking
TheWebpagedevelopmentpersonnelwillnotbethefamiliarscriptlanguageprogrammers.TheJSPtechnologyhassealedmanyfunctions,thesefunctionsareeasytouse,markingtocarryonthedynamiccontentproductionwithJSPintherelatedXMLtoneed.ThestandardJSPmarkingcanvisitandtheinstantiation
JavaBeansmodule,theestablishmentortheretrievalmoduleattribute,downloadsApplet,aswellastheexecutiondifficultywithcodesandthetime-consuming
functionwithothermethods.
2.4adaptstheplatf
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