Video: Puas yog lub caij nplooj ntoos hlav backend lossis frontend?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Caij nplooj ntoos hlav yog lub Web Application moj khaum uas ua hauj lwm raws li ib tug inversion ntawm tswj (IOC) thawv rau Java. Muaj cov extensions siv Caij nplooj ntoos hlav nyob rau sab saum toj ntawm J2EE thiab koj technically tuaj yeem tsim ib qho pem hauv ntej kawg siv Caij nplooj ntoos hlav , tab sis feem ntau Caij nplooj ntoos hlav tsuas yog siv los sau koj li qab kawg kev pabcuam.
Hais txog qhov no, puas yog SQL backend lossis frontend?
Muaj ntau ntau cov ntaub ntawv sib txawv uas tau siv dav, xws li MySQL, SQL ntawv Server, PostgresSQL, thiab Oracle. Koj lub app tseem yuav muaj pem hauv ntej code, tab sis nws kuj yuav tsum tau tsim los siv ib hom lus uas lub database tuaj yeem paub. Qee yam thaub qab Cov lus yog Ruby, PHP, Java,. Net, thiab Python.
Ib tug kuj yuav nug, qhov txawv ntawm frontend thiab backend yog dab tsi? Frontend hais txog tus neeg siv khoom sab, whereas thaub qab hais txog server-sab ntawm daim ntawv thov. Ob leeg yog qhov tseem ceeb rau kev txhim kho lub vev xaib, tab sis lawv lub luag haujlwm, lub luag haujlwm thiab ib puag ncig lawv ua haujlwm yog tag nrho. txawv . Frontend yog qhov pib dab tsi cov neeg siv pom qhov twg thaub qab yog li cas txhua yam ua haujlwm.
Ib sab saum toj, yog Swift frontend lossis backend?
Kitura enables txoj kev loj hlob ntawm mobile pem hauv ntej kawg thiab qab kawg nyob rau hauv tib hom lus. Yog li ib lub tuam txhab IT loj siv Swift raws li lawv thaub qab thiab pem hauv ntej lus nyob rau hauv ntau lawm ib puag ncig. Qhov feem ntau xav tau technology. Raws li qhov chaw ua haujlwm pub dawb Toptal, Swift yog cov lus programming uas xav tau tshaj plaws.
Puas yog JSON pem hauv ntej kawg lossis backend?
Pem hauv ntej - kawg tsis tshua siv XML vim nws nyuaj heev los txheeb xyuas cov ntaub ntawv XML nrog JS. Ua ntej JSON tsis muaj ntau hom ntaub ntawv uas cov neeg tsim khoom tuaj yeem tso siab rau. JSON yog ib txoj hauv kev kom dhau cov ntaub ntawv los ntawm thaub qab rau pem hauv ntej - kawg.
Pom zoo:
Dao chav kawm nyob rau lub caij nplooj ntoos hlav yog dab tsi?
Nws yog tus qauv tsim nyob rau hauv uas cov ntaub ntawv nkag mus siv khoom (DAO) yog ib yam khoom uas muab qhov kev paub daws teeb meem rau qee hom database lossis lwm yam kev ua haujlwm ruaj khov. Lub caij nplooj ntoos hlav cov ntaub ntawv nkag mus rau lub moj khaum yog muab los koom ua ke nrog cov txheej txheem sib txawv xws li JDBC, Hibernate, JPA, iBatis thiab lwm yam
@ResponseBody annotation nyob rau lub caij nplooj ntoos hlav yog dab tsi?
Cov lus siv: Java, JSON
Cron kev qhia yog dab tsi nyob rau lub caij nplooj ntoos hlav?
Ib qho Cron qhia muaj rau qhov ua ntu zus - thib ob, feeb, teev, hnub ntawm lub hli, hli, hnub (s) ntawm lub lim tiam.thiab tau tshaj tawm raws li hauv qab no @Scheduled(cron = '* * * * **')
Lub ntsiab lus configuration nyob rau lub caij nplooj ntoos hlav yog dab tsi?
Lub Caij Nplooj Ntoos Zeeg yog dab tsi? Caij nplooj ntoos hlav ntsiab lus tseem hu ua Spring IoC ntim, uas yog lub luag hauj lwm rau instantiating, configuring, thiab assembling taum los ntawm kev nyeem configuration metadata los ntawm XML, Java annotations, thiab / los yog Java code nyob rau hauv cov ntaub ntawv configuration
Koj puas tuaj yeem ua kom sov thiab khoov lub caij nplooj ntoos hlav steel?
Caij nplooj ntoos hlav steel yog hardened carbon steel, tsis yog li tshwj xeeb. Tab sis vim lub hardening nws tseem nyob rau hauv nws daim ntawv. Yog tias koj xav khoov nws koj yuav tsum tau ua kom sov kom liab glowing thaum nws yuav xoob nws hardness. Yog li koj tsis tuaj yeem khoov nws, raws li nws yuav rov qab