java - What exception would be thrown in a @Transactional method if a database connection is unavailable?

Question

Using @org.springframework.transaction.annotation.Transactional with

<bean class="org.springframework.orm.jpa.JpaTransactionManager" id="txMgr">
    <property name="entityManagerFactory" ref="emFactory"/>
</bean>

and

<tx:annotation-driven mode="aspectj" transaction-manager="txMgr"/>

What exception would be thrown upon entering the @Transactional method, if any?

Answer 1

它将成为 RuntimeException 的子类。

这必须在比您的服务更高的级别上进行管理。如果数据库是 KO，回滚是无关紧要的^^。