Spring以註解方式配置事物：

@Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=true)//類上配置的註解會對所有方法生效

public class AccountServiceImpl implements AccountService {

private AccountDao ad ;

private TransactionTemplate tt;

@Override

@Transactional(isolation=Isolation.REPEATABLE_READ

public void transfer(final Integer from,final Integer to,final Double money) {

}

}