Video: Dab tsi yog Joinpoint nyob rau lub caij nplooj ntoos hlav nrog piv txwv?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Koom tes yog lub ntsiab lus ntawm kev ua tiav ntawm qhov kev zov me nyuam, xws li kev ua tiav ntawm txoj kev lossis kev tuav ntawm qhov kev zam. Hauv Caij nplooj ntoos hlav AOP, ib koom tes ib txwm sawv cev rau txoj kev ua tiav. Cov lus qhia yog txuam nrog ib qho kev qhia pointcut thiab khiav ntawm ib qho twg koom point matched los ntawm pointcut.
Tsis tas li ntawd, dab tsi yog Joinpoint nyob rau lub caij nplooj ntoos hlav?
Koom tes : A koom tes yog tus neeg sib tw taw tes rau hauv Txoj Haujlwm Kev Ua Haujlwm ntawm daim ntawv thov qhov twg ib qho tuaj yeem txuas rau. Qhov no tuaj yeem yog ib txoj hauv kev hu ua, kev zam raug pov tseg, lossis txawm tias qhov chaw raug hloov kho. Cov lus qhia tuaj yeem siv rau ntawm ib qho twg koom tes txhawb nqa los ntawm AOP lub moj khaum.
Ib yam li ntawd, AOP yog dab tsi nyob rau lub caij nplooj ntoos hlav nrog piv txwv? AOP nrog Caij nplooj ntoos hlav Lub moj khaum. Ib qho ntawm cov khoom tseem ceeb ntawm Caij nplooj ntoos hlav Framework yog Aspect oriented programming ( AOP ) lub moj khaum. Spring AOP module muab interceptors los cuam tshuam ib daim ntawv thov. Rau piv txwv , thaum ib txoj kev raug tua, koj tuaj yeem ntxiv kev ua haujlwm ntxiv ua ntej lossis tom qab txoj kev ua tiav.
Kuj nug, dab tsi yog nam nyob rau hauv lub caij nplooj ntoos hlav piv txwv?
Yam : Ib yam yog ib chav kawm uas siv cov kev txhawj xeeb txog kev lag luam uas txiav hla ntau chav kawm, xws li kev tswj hwm kev lag luam. Yam tuaj yeem yog chav kawm ib txwm teeb tsa los ntawm Caij nplooj ntoos hlav XML configuration lossis peb tuaj yeem siv Caij nplooj ntoos hlav AspectJ kev koom ua ke los txhais cov chav kawm li Yam siv @ Yam lus piav qhia.
Dab tsi yog cov lus qhia thaum caij nplooj ntoos hlav?
Tswv yim yog ib qho kev nqis tes ua los ntawm ib qho ntawm ib qho kev koom tes tshwj xeeb. Ntau hom lus qhia suav nrog "ib puag ncig," "ua ntej" thiab "tom qab" lus qhia . Lub hom phiaj tseem ceeb ntawm kev sib tw yog los txhawb cov kev txhawj xeeb hla hla, xws li kev txiav, profileing, caching, thiab kev tswj kev lag luam.
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
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