-計(jì)算機(jī)專業(yè)開(kāi)題報(bào)告外文文獻(xiàn)及中文翻譯

--計(jì)算機(jī)專業(yè)開(kāi)題報(bào)告外文文獻(xiàn)及中文翻譯DEVELOPMENTHISTORYOFJSPBy:KathySierraandBertBatesSource:Servlet&JSPTheJavaServerPages(JSP)isakindofaccordingtowebofthescriptplaitdistancetechnique,similarcarriesthescriptlanguageofJavaintheserverofthescapepanyofserver-sideJavaScript(SSJS)andtheActiveServerPages(ASP)oftheMicrosoft、JSPparestheSSJSandASPtohavebettercanexpandsex,anditisnomoreexclusivethananyfactoryorsomeoneparticularserverofWeb、ThoughthenormofJSPistobedrawupbytheSunpanyof,anyfactorycancarryouttheJSPonownsystem、TheAfterSunreleasetheJSP(theJavaServerPages)formally,thethiskindofnewWebapplicationdevelopmenttechniqueveryquicklycausedthepeoplesconcern、JSPprovidedaspecialdevelopmentenvironmentfortheWebapplicationthatestablishesthehighdynamicstate、AccordingtotheSunparlance,theJSPcanadapttoincludetheApacheWebServer,IIS4、0onthemarketatinsideof85%serverproduct、ThischapterwillintroducetherelatedknowledgeofJSPandDatabases,andJavaBeanrelatedcontents,isallcertainlyrougherintroductionamongthembasiccontents,sayperhapstoisaGuideonly,ifthereaderneedsthemoredetailedinformation,pleasingthebookofconsultthehomologousJSP、1、1GENERALIZETheJSP(JavaServerPages)isfromthepanyofSunMicrosystemsinitiate,themanypaniestheparticipatetothebuildupthetogetheroftheakindtheofdynamicthestatewebthepagetechniquestandard,theithavetheitintheconstructiontheofthedynamicstatethewebpagethestrongbutthedonottheespeciallyofthefunction、JSPandthetechniqueofASPoftheMicrosoftisveryalike、Bothallprovidetheabilitythatmixeswithacertainprocedurecodeandisexplainbythelanguageenginetocarryouttheprocedurecodeinthecodeof、Underneathwearesimpleofcarryontheintroductiontoit、JSPpagesaretranslatedintoservlets、So,fundamentally,anytaskJSPpagescanperformcouldalsobeacplishedbyservlets、However,thisunderlyingequivalencedoesnotmeanthatservletsandJSPpagesareequallyappropriateinallscenarios、Theissueisnotthepowerofthetechnology,itistheconvenience,productivity,andmaintainabilityofoneortheother、Afterall,anythingyoucandoonaparticularputerplatformintheJavaprogramminglanguageyoucouldalsodoinassemblylanguage、Butitstillmatterswhichyouchoose、JSPprovidesthefollowingbenefitsoverservletsalone:?Itiseasiertowriteandmaintainthe、Yourstaticcodeisordinary:noextrabackslashes,nodoublees,andnolurkingJavasyntax、?YoucanusestandardWeb-sitedevelopmenttools、EventoolsthatknownothingaboutJSPcanbeusedbecausetheysimplyignoretheJSPtags、?Youcandivideupyourdevelopmentteam、TheJavaprogrammerscanworkonthedynamiccode、TheWebdeveloperscanconcentrateonthepresentationlayer、Onlargeprojects,thisdivisionisveryimportant、Dependingonthesizeofyourteamandtheplexityofyourproject,youcanenforceaweakerorstrongerseparationbetweenthestaticandthedynamiccontent、Now,thisdiscussionisnottosaythatyoushouldstopusingservletsanduseonlyJSPinstead、Bynomeans、Almostallprojectswilluseboth、Forsomerequestsinyourproject,youwilluseservlets、Forothers,youwilluseJSP、Forstillothers,youwillbinethemwiththeMVCarchitecture、YouwanttheapGFDGpropriatetoolforthejob,andservlets,bythemselves,donotpleteyourtoolkit、1、2SOURCEOFJSPThetechniqueofJSPofthepanyofSun,makingthepageofWebdevelopthepersonnelcanusetheperhapsmarkingofXMLtodesigntoturntheendpagewithformat、UsetheperhapssmallscriptfuturelifeofmarkingofJSPbeesthedynamicstateonthepagecontents、(thecontentschangesaccordingtotheclaimof)TheJavaServletisatechnicalfoundationofJSP,andthelargeWebappliesthedevelopmentoftheproceduretoneedtheJavaServlettomatchwithwiththeJSPandthencanplete,thisnameofServletesfromtheApplet,thelocaltranslationmethodofnowisalotof,thisbookinordernottomisconstruction,decidethedirectadoptionServletbutdontdoanytranslation,ifreaderwouldliketo,cancallitas"smallserviceprocedure"、TheServletissimilartotraditionalCGI,ISAPI,NSAPIetc、Webproceduredevelopmentthefunctionofthetoolinfact,atusetheJavaServlethereafter,thecustomerneednotuseagainthelowlymethodofCGIofefficiency,alsoneednotuseonlytheabilityetobornpageofWebofdynamicstateinthemethodofAPIthatacertainfixedWebserverterracecirculate、ManyserversofWeballsupporttheServlet,evennotsupporttheServletserverofWebdirectlyandcanalsopasstheadditionalappliedserverandthemoldpiecestosupporttheServlet、ReceivebenefitinthecharacteristicoftheJavacross-platform,theServletisalsoaterraceirrelevant,actually,aslongasmatchthenormofJavaServlet,theServletispletetohavenothingtodowithterraceandistohavenothingtodowithserverofWeb、BecausetheJavaServletisinternaltoprovidetheservicebythelinedistance,neednotstartaprogresstotheeachclaimses,andmakeuseofthemulti-threadingmechanismcanatthesametimeforseveralclaimservice,thereforetheefficiencyofJavaServletisveryhigh、ButtheJavaServletalsoisnottohasnoweakness,similartotraditionalCGI,ISAPI,theNSAPImethod,theJavaServletistomakeuseoftooutputthelanguagesentencetocarryoutthedynamicstatewebpageof,ifdevelopthewholewebsitewiththeJavaServlet,theintegrationprocessofthedynamicstatepartandthestaticstatepageisanevil-forebodingdreamsimply、ForsolvingthiskindofweaknessoftheJavaServlet,theSUNreleasedtheJSP、Anumberofyearsago,Martywasinvitedtoattendasmall20-personindustryroundtablediscussiononsoftwaretechnology、SittingintheseatnexttoMartywasJamesGosling,inventoroftheJavaprogramminglanguage、Sittingseveralseatsawaywasahigh-levelmanagerfromaverylargesoftwarepanyinRedmond,Washington、Duringthediscussion,themoderatorbroughtupthesubjectofJini,whichatthattimewasanewJavatechnology、Themoderatoraskedthemanagerwhathethoughtofit,andthemanagerrespondedthatitwastooearlytotell,butthatitseemedtobeanexcellentidea、Hewentontosaythattheywouldkeepaneyeonit,andifitseemedtobecatchingon,theywouldfollowhispanysusual"embraceandextend"strategy、Atthispoint,Goslinglightheartedlyinterjected"Youmeandisgraceanddistend、"Now,thegrievancethatGoslingwasairingwasthathefeltthatthispanywouldtaketechnologyfromotherpaniesandsubornitfortheirownpurposes、Butguesswhat?Theshoeisontheotherfoothere、TheJavamunitydidnotinventtheideaofdesigningpagesasamixtureofstaticanddynamiccodemarkedwithspecialtags、Forexle,ColdFusiondidityearsearlier、EvenASP(aproductfromtheverysoftwarepanyoftheaforementionedmanager)popularizedthisapproachbeforeJSPcamealonganddecidedtojumponthebandwagon、Infact,JSPnotonlyadoptedthegeneralidea,itevenusedmanyofthesamespecialtagsasASPdid、TheJSPisanestablishmentatthemodelofJavaservletsonoftheexpressionlayertechnique,itmakestheplaitwritethetobeemoresimple、BeliketheSSJS,italsoallowsyoucarrythestaticstatecontentsandserversthescriptmixtoputtogethertheborndynamicstateexportation、JSPthescriptlanguagethattheJavaisthetacitapproval,however,beliketheASPandcanuseotherlanguages(suchasJavaScriptandVBScript),thenormofJSPalsoallowstouseotherlanguages、1、3JSPCHARACTERISTICSIsaserviceaccordingtothescriptlanguageinsomeonelanguageofthestaturessystemthiskindofdiscuss,theJSPshouldbeseemakeisakindofscriptlanguage、However,beakindofscriptlanguage,theJSPseemedtobetoostrongagain,almostcanuseallJavasintheJSP、Beakindofaccordingtotextoriginallyof,takemanifestationasthecentraldevelopmenttechnique,theJSPprovidedalladvantagesoftheJavaServlet,and,whenbinewithaJavaBeanstogether,providingakindofmakecontentsandmanifestationthatsimplewaythatlogicseparate、Separatethecontentsandadvantageoflogicalmanifestationsis,thepersonnelwhorenewsthepageexternalappearanceneednotknowthecodeofJava,andrenewtheJavaBeanspersonnelalsoneednotbedesignthewebpageofexpertinhand,canusetotakethepageofJavaBeansJSPtodefinethetemplateofWeb,tobuildupafromhavethealikeexternalappearanceofthewebsitethatpageconstitute、JavaBeanspletesthedatatoprovide,havingnocodeofJavainthetemplatethus,thismeansthatthesetemplatescanbewrittenthepersonnelbyaplaittosupport、Certainly,canalsomakeuseoftheJavaServlettocontrolthelogicofthewebsite,adjustthroughtheJavaServlettousethewayofthedocumentofJSPtoseparatewebsiteoflogicandcontents、Generallyspeaking,inactualengineofJSP,thepageofJSPistheeditandtranslatetypewhilecarryout,notexplainthetypeof、Explainthedynamicstatewebpagedevelopmenttoolofthetype,suchasASP,PHP3etc、,becausespeedetc、reason,havealreadycantsatisfycurrentthelargeelectronicmerceneedsappliedly,traditionaldevelopmenttechniquesareallattoeditandtranslatetheexecutivewaychange,suchastheASP→ASP+;PHP3→PHP4、IntheJSPnormbook,didnotrequesttheprocedureintheJSPcodepart(becalledtheScriptlet)andmustwritewiththeJavadefinitely、Actually,havesomeenginesofJSPareadoptiveotherscriptlanguagessuchastheEMAC-Script,etc、,butactuallythisafewscriptlanguagesalsoaretosetupontheJava,editandtranslatefortheServlettocarryoutof、WriteaccordingtothenormofJSP,havenoScriptletofrelationwithJavaalsoiscanof,however,mainlylieintheabilityandJavaBeans,theEnterpriseJavaBeansesbecauseoftheJSPstrongfunctiontoworktogether,soevenistheScriptletpartnottousetheJava,editandtranslateofperformancecodealsoshouldisrelatedwithJava、1、4JSPMECHANISMToprehendtheJSPhowunitethetechnicaladvantagethatabovevariousspeakof,etocarryoutvariousresulteasily,thecustomermustunderstandthedifferentiationof"themoduledevelopsforthewebpageofthecenter"and"thepagedevelopsforthewebpageofthecenter"first、TheSSJSandASPareallinseveralyearagotorelease,theworkofthattimeisstillveryyoung,nooneknowstostillhaveinadditiontomakingallbusiness,datasandtheexpressionlogicentertheoriginalwebpageentirelyheapwhatbettersolvethemethod、Thiskindofmodelthattakepageasthecenterstudiesandgetstheveryfastdevelopmenteasily、However,alongwithchangeoftime,thepeopleknowthatthiskindofmethodisunwellinsetuplarge,theWebthatcanupgradeappliestheprocedure、Theexpressionlogicwriteinthescriptenvironmentwaslockinthepage,onlypassingtosheartosliceandgluetostickthencandriveheavyuse、Expressthelogictousuallymixtogetherwithbusinessandthedatalogics,whenthismakesbetheproceduremembertotrytochangeanexternalappearancethatappliestheprocedurebutdonotwanttobreakwithitslliedbusinesslogic,applytheprocedureofmaintenancebeliketowalkthesimilardifficultyontheeggshell、Infactinthebusinessenterprise,heavyusetheapplicationofthemodulealreadythroughverymature,noonewouldliketorewritethoselogicsfortheirappliedprocedure、andsketchthedesignerhandedovertotheimplementworkoftheirdesigntheWebplaittheonewhowrite,maketheyhavetodoublework-Usuallyisthehandicraftplaittowrite,becausehavenofittoolandcancarrythescriptandthecontentsknottotheservertoputtogether、Chienbutspeech,applytheplexityoftheprocedurealongwiththeWebtopromotecontinuously,thedevelopmentmethodthattakepageasthecenterlimitssextobeetogetupobviously、Atthesametime,thepeoplealwaysatlookforthebettermethodofbuilduptheWebapplicationprocedure,themodulespreadsincustomersmachine/servertherealm、JavaBeansandActiveXwerepublishedthepanytoexpandtoapplytheproceduredeveloperforJavaandWindowstousetoetodeveloptheplicatedprocedurequicklyby"thefastapplicationproceduredevelopment"(RAD)tool、Thesetechniquesmaketheexpertinthesomerealmbeabletowritethemodulefortheperpendicularapplicationplaitintheskillarea,butthedevelopercangofetchtheusagedirectlybutneednotcontroltheexpertiseofthisrealm、Beakindoftakemoduleasthecentraldevelopmentterrace,theJSPappeared、ItwiththeJavaBeansandEnterpriseJavaBeans(EJB)moduleincludesthemodelofthebusinessandthedatalogicforfoundation,providea