JSP技术外文文献.docx

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