spring-transaction-auto.

自动配置

@EnableTransactionManagement
-> @Import(TransactionManagementConfigurationSelector.class)
-> ProxyTransactionManagementConfiguration

ProxyTransactionManagementConfiguration
@Bean
-> BeanFactoryTransactionAttributeSourceAdvisor
->setTranactionAttributeSource (TransactionAttributeSource())
->setAdvice(TransactionInterceptor()->ref->TransactionManager)

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