JSP与WEB技术文献翻译.docx
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JSP与WEB技术文献翻译.docx
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JSP与WEB技术文献翻译
JSPandWEBtechnology
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/ORMrealizesfacilitate
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