事务不回滚 JPA 保存在 spring 启动

Question

I am working on a spring boot app where I am using transactional and its not rolling back its changes when I throw a exception:

My method:

private BtoBWalletTransactionResponseModel doWalletOperation(BtoBWalletTransactionTypes transactionType, BtoBWalletTransactionRequestModel transactionRequest) {
            // DB Operation
            BtoBWalletTransaction savedTransaction = commonTransactionalService.finishWalletTransaction(userWallet, btoBWalletTransaction);
            log.info("wallet {} txn of amount {} for user {}",transactionType.name(),txnAmount,userId);
            // throwing a exception to rollback
            throw new RuntimeException("Time to Rollback");
            
        } catch(Exception e){
            log.error(e.getMessage());
            log.error("error while doing wallet operations for user {}",userId);
            throw new WalletException(e.getMessage());
        }

    }

My common TransactionalService Interface:

public interface CommonTransactionalService {

    BtoBWalletTransaction finishWalletTransaction(BtoBUserWallet userWallet,BtoBWalletTransaction btoBWalletTransaction);

}

My Interface Impl:

import javax.transaction.Transactional;

@Service
public class CommonTransactionalServiceImpl implements CommonTransactionalService {

    @Autowired
    private BtoBWalletTransactionRepo btoBWalletTransactionRepo;

    @Transactional
    @Override
    public BtoBWalletTransaction finishWalletTransaction(BtoBUserWallet userWallet, BtoBWalletTransaction walletTransaction) {
        BtoBWalletTransaction savedTransaction = btoBWalletTransactionRepo.save(walletTransaction);
        btoBUserWalletRepo.save(userWallet);
        return savedTransaction;
    }

}

Now even when I am sending a RuntimeException the DB record is not getting rolled back. Can someone help? stuck since hours here.

Answer 1

Transactional is scoped, if you anotate a method (or class) as @Transactional all the methods this class calls wil also be transactional. and if within this transaction an exception occurs things wil be rolled back.

If however like in you example a non-transactional method calls a transactional one and after that call throws an exception the previous transactioned function wil not be rolled back as it's outside of the transactions scope.