外文翻译JSP及其WEB技术.docx

外文翻译JSP及其WEB技术.docx

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外文翻译JSP及其WEB技术

外文翻译原文及译文

JSPandWEBtechnolog

1JSPIntroduction

JSP（JavaServerPages）isaJava-basedscriptingtechnology.IsadvocatedbySunMicrosystemsInc.,togetherwithanumberofcompaniesinvolvedintheestablishmentofadynamicwebpagetechnologystandards.JSPtechnologyissomewhatsimilartoASPtechnology,ItisatraditionalHTMLpagefile（*.htm,*.html）toinsertJavaprogramsegment（Scriptlet）andJSPtag（tag）,ToformtheJSPfile（*jsp）.WebdevelopmentwithJSPisacross-platformapplicationsthatcanrununderLinux,butalsoinotheroperatingsystems.IntheJSPofthemanyadvantages,oneofwhichisthatitwillbeHTMLencodedWebpagefromthebusinesslogicseparatedeffectively.JSPaccesswithreusablecomponents,suchasServlet,JavaBeanandJava-basedWebapplications.JSPalsosupportsdirectlyintheWebpageembeddedJavacode.JSPcanbeusedtwowaystoaccessdocuments:

JSPdocumentssentbythebrowserrequest,therequestsenttotheServlet.JSPtechnologyusesJavaprogramminglanguage,XML-typetagsandscriptlets,tohaveapackagedealwiththelogicofdynamicpages.Pagetagsandscriptletscanalsoexistintheserveraccesstotheresourcesoftheapplicationlogic.JSPlogicandWebpagedesignanddisplayisolatedandsupportreusablecomponent-baseddesign,Web-basedapplicationsmorequicklyandeasilydeveloped.

TheWebserverwhenmeetsvisitstheJSPhomepagetherequest,firstcarriesoutsegment,willthencarryouttheresultcodetoreturntogetherwithJSPinthedocumentHTMLforthecustomer.TheinsertionJavasegmentmayoperatethedatabase,againthedirectionalhomepageandsoon,realizesthefunctionwhichtheestablishmentdynamichomepageneeds.JSPandJavaServletarethesame,isintheserverendexecution,usuallyreturnstothisclientsideisaHTMLtext,thereforeclientside,solongashasthebrowsertobeabletoglanceover.

TheJSPpageiscomposedoftheHTMLcodeandtheinsertingJavacode.TheserverinthepagebytheclientsidewasrequestedthatlaterwillcarryonprocessingtotheseJavacode,willthenproducetheHTMLpagewillreturngivestheclientsidethebrowser.JavaServletistheJSPtechnologybase,moreoverthelarge-scaleWebapplicationprocedure'sdevelopmentneedsJavaServletandtheJSPcoordinationcancomplete.JSPhadtheJavatechnologysimplyeasytouse,completeobject-oriented,hadtheplatformindependency,andsafereliable,mainlyfacedInternet'sallcharacteristics.

2JSPcomputingtechnique

Tocarryonthedynamicwebsiteconvenientlyfastthedevelopment,JSPhasmadetheimprovementinthefollowingseveralaspects,causesittobecomebuildsthecrossplatformfastthedynamicwebsitefirstchoiceplan.

2.1carriesonthecontentproductionandthedemonstrationseparates

WiththeJSPtechnology,theWebpagedevelopmentpersonnelmayuseHTMLortheXMLmarkingdesignandtheformattedfinalpage,andusestheJSPmarkingorthetootsyproducesonpage'sdynamiccontentoriginally.Productioncontent'slogicissealedinmarksandintheJavaBeansmodule,andtiesupinthescript,allscriptsinserverendmovement.BecausecorelogicissealedinmarksandinJavaBeans,thereforetheWebadministrativepersonnelsandthepagedesigner,caneditandusetheJSPpage,butdoesnotaffectthecontenttheproduction.Intheserverend,theJSPengineexplainedthattheJSPmarkingandthescript,producethecontentwhichrequested,and（orXML）page'sformtransmitstheresultbyHTMLthebrowser.Thisbotharehelpfulintheauthorprotectsowncode,andcanguaranteeanybasedontheHTMLWebbrowser'scompleteusability.

2.2mayentrustwithheavyresponsibilitythemodule

TheoverwhelmingmajorityJSPpagereliesonmayentrustwithheavyresponsibility,thecrossplatformmodule（JavaBeansorEnterprisetheJavaBeansmodule）carriesoutcomplexprocessingwhichtheapplicationprocedurerequests.Thedevelopmentpersonnelcanshareandexchangetheexecutionordinaryoperationthemodule,orcausesthesemodulesusesformoreusersandthecustomerassociation.Hasacceleratedtheoveralldevelopmentprocessbasedonmodule'smethod,andcauseseachkindoforganizationobtainsbalancedintheirexistingskillandintheoptimizedresultdevelopmentendeavor.

2.3usesmarking

TheWebpagedevelopmentpersonnelwillnotbethefamiliarscriptlanguageprogrammers.TheJSPtechnologyhassealedmanyfunctions,thesefunctionsareeasytouse,markingtocarryonthedynamiccontentproductionwithJSPintherelatedXMLtoneed.ThestandardJSPmarkingcanvisitandtheinstantiationJavaBeansmodule,theestablishmentortheretrievalmoduleattribute,downloadsApplet,aswellastheexecutiondifficultywithcodesandthetime-consumingfunctionwithothermethods.

2.4adaptstheplatform

NearlyallplatformssupportJava,JSP+JavaBeanstobepossibletopassunimpedednearlyunderallplatforms.Transplantsfromaplatformtootherplatform,JSPandJavaBeansdoesnotevenneedtotranslate,becausetheJavabytecodeisstandardhasnothingtodowiththeplatform.

2.5databaseconnection

InJavaconnectsthedatabasethetechnologyistheJDBC,JavaprocedureisconnectedthroughtheJDBCdriverandthedatabase,operationsandsoonexecutioninquiry,extractiondata.SunCorporationhasalsodevelopedJDBC-ODBCbridge,usesthistechnicalJavaproceduretobepossibletovisithastheODBCdriverdatabase,atpresentthemajoritydatabasesystemshavetheODBCdriver,thereforetheJavaprocedurecanvisitsuchasOracle,Sybase,MSSQLServeranddatabasesandsoonMSAccess.Inaddition,throughthedevelopmentmarkingstorehouse,theJSPtechnologymayfurtherexpand.Thethirdpartydevelopmentpersonnelandotherpersonnelmayfoundtheirmarkingstorehouseforthecommonlyusedfunction.ThisenablestheWebpagedevelopmentpersonneltobeabletousethefamiliartoolandtobesimilartomarkingsamecarriesoutthespecificfunctioncomponenttocarryonthework.TheJSPtechnologyveryeasyconformitytomanykindsofapplicationarchitecture,tousetheextanttoolandtheskill,andcanexpandtothesupportenterprisedistributionalapplication.

3Eclipsefunctionsynopsis

MoreandmoreJavadevelopmentpersonnelalreadystartedtheproductivitywhichandthequalityincomeappreciatesEclipseJDTtoprovide.ItwastheJavaeditorprovidesgrammarGaoLiangtodemonstratethattheformatting,thefold,thecontentwereauxiliary,codetemplateandsoonmanyfunctions.Itgrowsunceasinglyavailablerestructuringandthecodegenerationfunctionsetpermitsyouinahigherranktheoperationcode,andautomatedusualcodeintensitydutyandeasywrongduty.Moreover,indevelopsthecodeandusesJDTtocompileandtocarryouttheJUnittestbuilt-insupportcarriesontheunittestingafterthecode,mayuseEclipsethefirst-classJavadebuggerdebuggingwhenthemovementmeetsanyquestion.BesidesJDT,EclipseSDK-themostpopularEclipse.orgdownloading-alsocontainsPlug-inDevelopmentEnvironment（PDE）.PDEusedthespecificfunctiontoexpandJDTtoconstructtheEclipseplug-inunit-basedontheEclipseapplicationprocedurebasicconstructionagglomeration.Infact,usesthetoolwhichprovidesbyEclipseitselftobeabletosurmounttheJavadevelopment,mayexpandtheexistingEclipseapplicationprocedure,orevenfoundsthebrand-newapplicationprocedure.

Eclipsebyascriptlevelconstitution,containsinmanyfunctionalmodulesortheEclipseterminologyso-called“theplug-inunit”.Theplug-inunitisprovidesallfunctionsintheEclipseapplicationprocedurethemodule.TheycooperatethroughitsAPItopaythefinaloutcometogether.InEclipse,eventhemostfoundation'sfunction,forinstancethesearchandthestartinstallment'splug-inunit,sealsintheplug-inunit.InordertoexpandtheexistingEclipsefunctionorcarryontheconstructioninabove,theplug-inunittheconcreteexpansioncontributionfortheexpansionspotwhichwillexposebyotherplug-inunits.Usually,theplug-inunitconcentratesthespecificregionresponsibility,andgivesthroughoramanyexpansionwayotherresponsibilitydesignationotherplug-inunits.Forexample,aplug-inunitallowsyouparalleltocomparetwodocumentsvisiblythecontents,butitwillnotcarehowtoreadthesedocumentsevenhowtoexplainthesedocumentstructure;Thisisotherplug-inunit'swork.Whencomparedwithtwodocuments,thisplug-inunitfirstinspectswhethertohaveanotherplug-inunittobepossibletoexplainthesedocumentstructure.Iffoundone,ittotheplug-inunitinquiryrelatedfileorganizationinformationwhichfound,andusedthisinformationinthecomparisonprocess.

MayseethatthemodularconstructionwasEclipsehasprovidedthehugeflexibility,andprovidedonetobepossibletosupportthemassiveapplicationprocedureplatformwhichtheoriginaldesignhasnotexpected.

4Structsfunctionsynopsis

StrutsisaMVCframe（Framework）,usesindevelopingJavafasttheWebapplication.StrutsrealizesthekeypointinC（Controller）,Actionwhichandwehavecustom-madeincludingActionServlet/RequestProcessor,wasalsoV（View）providesaseriesofrowstohavecustom-madethelabel（CustomTag）.Springisalightvessel（light-weightcontainer）,itscoreistheBeanfactory（BeanFactory）,withconstructsM（Model）whichweneed.Abovethisfoundation,SpringhasprovidedAOP（Aspect-OrientedProgramming,facestratificationplaneprogramming）realization,providesunderthenon-managementenvironmentwithittodeclareservicesandsoonwaybusiness,security;IsmoreconvenienttoBeanfactoryexpansionApplicationContextwetorealizetheJ2EEapplication;DAO/ORMrealizesfa