How to ensure MySQL connection of Spring @Transactional annotation use is the same with the one in method?

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How to ensure MySQL connection of Spring @Transactional annotation use is the same with the one in method?



If use @Transactional to annotate a method, the method will be transactional. If use DataSourceTransactionManager as transactionManager, JDBC connections will be managed.


DataSourceTransactionManager



Example:


@Transactional
public void insertOrder()
//insert log info
//insertOrder
//updateAccount



It seems that @Transactional help a DB connection start a transaction, insertOrder and updateAccount will use the same connection to modify data.


@Transactional


insertOrder


updateAccount



How does it do this?









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