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.

2.4adaptstheplatform

NearlyallplatformssupportJava,JSP+JavaBeanstobepossibletopass

unimpedednearlyunderallplatforms.Transplantsfromaplatformtootherplatform,

JSPandJavaBeansdoesnotevenneedtotranslate,becausetheJavabytecodeisstandardhasnothingtodowiththeplatform.

2.5databaseconnection

InJavaconnectsthedatabasethetechnologyistheJDBC,Javaprocedureis

connectedthroughtheJDBCdriverandthedatabase,operationsandsoonexecutioninquiry,extractiondata.SunCorporationhasalsodevelopedJDBC-ODBCbridge,usesthistechnicalJavaproceduretobepossibletovisithastheODBCdriver

database,atpresentthemajoritydatabasesystemshavetheODBCdriver,thereforetheJavaprocedurecanvisitsuchasOracle,Sybase,MSSQLServeranddatabasesandsoonMSAccess.Inaddition,throughthedevelopmentmarkingstorehouse,theJSPtechnologymayfurtherexpand.Thethirdpartydevelopmentpersonneland

otherpersonnelmayfoundtheirmarkingstorehouseforthecommonlyusedfunction.ThisenablestheWebpagedevelopmentpersonneltobeabletousethefamiliartoolandtobesimilartomarkingsamecarriesoutthespecificfunctioncomponentto

carryonthework.TheJSPtechnologyveryeasyconformitytomanykindsof

applicationarchitecture,tousetheextanttoolandtheskill,andcanexpandtothesupportenterprisedistributionalapplication.

3Eclipsefunctionsynopsis

MoreandmoreJavadevelopmentpersonnelalreadystartedtheproductivitywhichandthequalityincomeappreciatesEclipseJDTtoprovide.ItwastheJava

editorprovidesgrammarGaoLiangtodemonstratethattheformatting,thefold,thecontentwereauxiliary,codetemplateandsoonmanyfunctions.Itgrows

unceasinglyavailablerestructuringandthecodegenerationfunctionsetpermitsyouinahigherranktheoperationcode,andautomatedusualcodeintensitydutyand

easywrongduty.Moreover,indevelopsthecodeandusesJDTtocompileandtocarryouttheJUnittestbuilt-insupportcarriesontheunittestingafterthecode,

mayuseEclipsethefirst-classJavadebuggerdebuggingwhenthemovementmeetsanyquestion.BesidesJDT,EclipseSDK-themostpopularEclipse.orgdownloading

-alsocontainsPlug-inDevelopmentEnvironment（PDE）.PDEusedthespecific

functiontoexpandJDTtoconstructtheEclipseplug-inunit-basedontheEclipseapplicationprocedurebasicconstructionagglomeration.Infact,usesthetoolwhichprovidesbyEclipseitselftobeabletosurmounttheJavadevelopment,mayexpandtheexistingEclipseapplicationprocedure,orevenfoundsthebrand-newapplicationprocedure.

Eclipsebyascriptlevelconstitution,containsinmanyfunctionalmodulesor

theEclipseterminologyso-called“theplug-inunit”.Theplug-inunitisprovidesallfunctionsintheEclipseapplicationprocedurethemodule.Theycooperatethrough

itsAPItopaythefinaloutcometogether.InEclipse,eventhemostfoundation's

function,forinstancethesearchandthestartinstallment'splug-inunit,sealsintheplug-inunit.InordertoexpandtheexistingEclipsefunctionorcarryonthe

constructioninabove,theplug-inunittheconcreteexpansioncontributionfortheexpansionspotwhichwillexposebyotherplug-inunits.Usually,theplug-inunitconcentratesthespecificregionresponsibility,andgivesthroughoramany

expansionwayotherresponsibilitydesignationotherplug-inunits.Forexample,a

plug-inunitallowsyouparalleltocomparetwodocumentsvisiblythecontents,butitwillnotcarehowtoreadthesedocumentsevenhowtoexplainthesedocument

structure;Thisisotherplug-inunit'swork.Whencomparedwithtwodocuments,

thisplug-inunitfirstinspectswhethertohaveanotherplug-inunittobepossibletoexplainthesedocumentstructure.Iffoundone,ittotheplug-inunitinquiryrelatedfileorganizationinformationwhichfound,andusedthisinformationinthe

comparisonprocess.

MayseethatthemodularconstructionwasEclipsehasprovidedthehugeflexibility,andprovidedonetobepossibletosupportthemassiveapplicationprocedureplatformwhichtheoriginaldesignhasnotexpected.

4Structsfunctionsynopsis

StrutsisaMVCframe（Framework）,usesindevelopingJavafasttheWeb

application.StrutsrealizesthekeypointinC（Controller）,Actionwhichandwehavecustom-madeincludingActionServlet/RequestProcessor,wasalsoV（View）providesaseriesofrowstohavecustom-madethelabel（CustomTag）.Springisalight

vessel（light-weightcontainer）,itscoreistheBeanfactory（BeanFactory）,withconstructsM（Model）whichweneed.Abovethisfoundation,SpringhasprovidedAOP（Aspect-OrientedProgramming,facestratificationplaneprogramming）

realization,providesunderthenon-managementenvironmentwithittodeclareservicesandsoonwaybusiness,security;Ismoreco