Video: SQLException yog dab tsi hauv Java?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ib qho kev zam uas muab cov ntaub ntawv ntawm kev nkag mus rau database yuam kev lossis lwm yam yuam kev. Txhua SQLException muab ntau yam ntaub ntawv: ib txoj hlua piav txog qhov yuam kev. Qhov no yog siv raws li tus Java Cov lus tshwj xeeb, muaj nyob ntawm txoj kev getMesasge. Qhov no tuaj yeem siv los muab cov ntaub ntawv yuam kev ntxiv.
Ib yam li ntawd, SQL kev zam yog dab tsi?
Ib kev zam yog ib qho kev ua yuam kev thaum lub sijhawm ua haujlwm. PL/ SQL ntawv txhawb cov programmer kom ntes cov xwm txheej zoo li no siv TXOJ CAI thaiv nyob rau hauv qhov kev pab cuam thiab ib qho kev txiav txim tsim nyog raug coj tawm tsam qhov kev ua yuam kev.
Ib tug kuj yuav nug, thaum SQL kev zam tshwm sim hauv Java? SQLException Methods Ib SQLException ua tau tshwm sim ob qho tib si nyob rau hauv tus tsav tsheb thiab lub database. Thaum zoo li no kev zam tshwm sim , ib yam khoom ntawm hom SQLException yuav raug xa mus rau lub catch clause. Tau txais tus lej yuam kev cuam tshuam nrog rau kev zam.
Yog li ntawd, puas yog SQLException kuaj lossis tsis tau txheeb xyuas?
Lawv tshwm sim feem ntau cuam tshuam nrog cov peev txheej sab nraud / cov peev txheej hauv network xws li. teeb meem database, network kev twb kev txuas yuam kev, tsis muaj ntaub ntawv thiab lwm yam. Tshawb xyuas Exception yog subclasses ntawm Exception class. Piv txwv ntawm kuaj Exceptions yog: ClassNotFoundException, IOException, SQLException thiab lwm yam.
Dab tsi yog qhov kev zam JDBC?
- Java.sql. BatchUpdateException.
- java.sql. SQLException.
- java.sql. DataTruncation.
- java.sql. SQLWarning.
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