Video: Dab tsi yog qhov lim dej hauv lub caij nplooj ntoo hlav?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Caij nplooj ntoos hlav Boot - Servlet Lim . Kev tshaj tawm. A lim yog ib yam khoom siv los cuam tshuam HTTP thov thiab cov lus teb ntawm koj daim ntawv thov. Los ntawm kev siv lim , peb tuaj yeem ua ob txoj haujlwm ntawm ob qho piv txwv - Ua ntej xa daim ntawv thov mus rau tus maub los.
Ib yam li ntawd, siv cov lim dej hauv Spring MVC yog dab tsi?
Nyob rau hauv lub nutshell, ib tug servlet lim cia koj cuam tshuam cov lus thov thiab cov lus teb ntawm koj lub vev xaib daim ntawv thov.
Tsis tas li ntawd, Spring Security filter chain yog dab tsi? Cov Kev ruaj ntseg lim saw . Caij nplooj ntoos hlav Security tuav a lim saw internally qhov twg txhua tus lim muaj lub luag haujlwm tshwj xeeb thiab lim raug ntxiv lossis tshem tawm ntawm qhov kev teeb tsa nyob ntawm seb cov kev pabcuam twg yuav tsum tau ua. Ordering ntawm lub lim yog ib qho tseem ceeb vim tias muaj kev vam meej ntawm lawv.
Kuj paub, qhov txawv ntawm interceptor thiab lim hauv caij nplooj ntoos hlav yog dab tsi?
Qhov sib txawv ntawm Interceptor thiab Lim hauv Caij Nplooj Hlav MVC. Raws li kuv nkag siab los ntawm docs, Interceptor yog run nruab nrab thov. Ntawm qhov tod tes Lim yog khiav ua ntej rendering saib, tab sis tom qab Controller rendered teb.
Dab tsi yog cov lim dej hauv Java?
javax.servlet pej xeem interface Lim . A lim yog ib yam khoom uas ua lim kev ua haujlwm ntawm ob qho kev thov rau cov peev txheej (servlet lossis cov ntsiab lus zoo li qub), lossis ntawm cov lus teb los ntawm cov peev txheej, lossis ob qho tib si. Cov lim ua lim hauv txoj kev doFilter.
Pom zoo:
Dab tsi yog qhov tsim nyog rau lub caij nplooj ntoo hlav?
Lub @Qualifier annotation yog siv los daws qhov teeb meem autowiring, thaum muaj ntau taum ntawm tib hom. Cov lus piav qhia @Qualifier tuaj yeem siv rau ntawm txhua chav kawm sau nrog @Component lossis ntawm txoj kev sau nrog @Bean. Cov lus piav qhia no tseem tuaj yeem siv rau ntawm tus tsim cov lus sib cav lossis cov txheej txheem tsis
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
Dab tsi yog Qhov Chaw Tso Khoom Hauv Caij Nplooj Ntoos Hlav?
Caij nplooj ntoos hlav ntsiab lus: khoom vaj khoom tsev-placeholder. Cov ntsiab lus: khoom vaj khoom tsev-qhov chaw cim npe yog siv los tsim cov khoom ntiag tug hauv cov ntaub ntawv cais. Nws cia li configures PropertyPlaceholderConfigurer, uas hloov lub ${} placeholder, uas yog daws tawm tsam ib tug tshwj xeeb cov ntaub ntawv (raws li lub caij nplooj ntoos hlav resource chaw)
Dab tsi yog kev siv ntawm @repository annotation nyob rau lub caij nplooj ntoo hlav?
Spring @Repository Annotation. Caij nplooj ntoos hlav @Repository annotation yog siv los qhia tias cov chav kawm muab cov txheej txheem rau kev khaws cia, rov qab, tshawb nrhiav, hloov kho thiab rho tawm haujlwm ntawm cov khoom
Dab tsi yog qhov txawv ntawm byType thiab byName hauv caij nplooj ntoos hlav?
Qhov sib txawv ntawm byType thiab byName autowiring yog raws li hauv qab no: Autowire byType yuav tshawb nrhiav taum hauv cov ntaub ntawv teeb tsa, uas nws tus id phim nrog cov cuab yeej cuab tam yuav raug xaim whereas autowire byName yuav tshawb rau taum uas nws tus id yog txuam nrog cov cuab yeej lub npe. siv kab