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In vere,@TransactionalProcessus annotationum varias partes clavium involvit, inter quasAdvisor、Target、ProxyFactory manere. Infra accuratam explicationem et exemplum codicis explicandum est quomodo haec elementa cooperantur.

1. Ad clavem components

1.1 Advisor

Advisor Fons AOP conceptus est, quae punctum et consilium includit. In rem lorem,TransactionAttributeSourceAdvisorConsiliario amet est.

1.2 Target

TargetAgitur de objecto scopo proxi- mato, id est, objecto quod actu perficit negotium logicum.

1.3 ProxyFactory

ProxyFactory Classis officinas est a Spring praeparata ad res procuratores creandas. Potest creare procuratores usus JDK dynamicos procuratores vel CGLIB.

2. @Transactional processus flow

1. Parse annotationes: Ver scan@Transactionalannotationem.
2. Crea Advisor: crea in negotio dispensando rationeAdvisor。
3. Create procuratorem objectum: ususProxyFactoryFacere procuratorem obiectum scopum objectum adduntAdvisorProcuratori adjecit objectum.

3. Codicis exempla

3.1 configurationis genus

Primum, pass@EnableTransactionManagementAdmitte procuratio transactionis.

import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement
public class AppConfig {
    // DataSource, EntityManagerFactory, TransactionManager beans configuration
}

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