A simple Spring Boot application which demonstrates a use of @Transactional in @PostConstruct method
Demonstrates a solution to a problem of running Spring Transaction inside of a Spring Bean's method annotated with @PostConstruct, discussed in Stack Overflow question #17346679 @Transactional on @PostConstruct method.
The suggested solution injects a proxied version of itself (self variable), and calls through this instance a method that should be executed inside of Transaction.
The presence of Spring Transaction is proved by the examining of a flag returned by TransactionSynchronizationManager.isActualTransactionActive - the common practice for the subclasses of AbstractPlatformTransactionManager, including JpaTransactionManager, used by default in Spring Boot applications, e.g. this one, but please check an actual implementation of PlatformTransactionManager you are using in your project.
See TransactionalOnPostConstructService.java for the details.
Spring Boot environment is chosen for simplicity only, the solution should work for any Spring Bean-based application.