Question

每个人！组态： 1.春季启动：Web，JPA，H2

应用程序：

@SpringBootApplication
public class BankApplication {

public static void main(String[] args) {
    SpringApplication.run(BankApplication.class, args);
}

}

BankAccountDaoImpl：

@Repository
public class BankAccountDaoImpl implements BankAccountDao {

@Autowired
private EntityManagerFactory entityManagerFactory;

@Override
public void saveBankAccount(BankAccount bankAccount) {
    Session currentSession = entityManagerFactory.unwrap(SessionFactory.class).openSession();

    currentSession.save(bankAccount);
}

@Override
public BankAccount getBankAccount(int id) {
    Session currentSession = entityManagerFactory.unwrap(SessionFactory.class).openSession();

    BankAccount bankAccount = currentSession.get(BankAccount.class, id);

    return bankAccount;
}
}

ClientAccountDaoImp：

@Repository
public class ClientAccountDaoImp implements ClientAccountDao{

@Autowired
private EntityManagerFactory entityManagerFactory;

@Override
public void saveClientAccount(ClientAccount clientAccount) {
    Session currentSession = entityManagerFactory.unwrap(SessionFactory.class).openSession();

    currentSession.saveOrUpdate(clientAccount);
}

@Override
public ClientAccount getClientAccount(int id) {
    Session currentSession = entityManagerFactory.unwrap(SessionFactory.class).openSession();

    return currentSession.get(ClientAccount.class, id);
}

BankAccountServiceImpl和ClientAccountServiceImpl： aitowired BankAccountDaoImpl和ClientAccountDaoImp

所有方法都具有@Transactional批注：

@Override
@Transactional
public void saveClientAccount(ClientAccount clientAccount) {
    clientAccountDao.saveClientAccount(clientAccount);
}

@Override
@Transactional
public ClientAccount getClientAccount(int id) {
    return clientAccountDao.getClientAccount(id);
}

我有@RestController：

   @GetMapping("/buy/{accountId}/sum/{money}")
   public ClientAccount chargeAccount(@PathVariable int accountId, 
   @PathVariable int money) {

    BankAccount bankAccount = bankAccountService.getBankAccount(1);
    int mn = bankAccount.getAmount() - money;
    bankAccount.setAmount(mn);
    bankAccountService.saveBankAccount(bankAccount);
    ClientAccount clientAccount = clientAccountService.getClientAccount(accountId);
    clientAccount.setAmount(money);

    clientAccountService.saveClientAccount(clientAccount);

    return clientAccount;
}

在方法中 clientAccountService.saveClientAccount(clientAccount); 我有一个例外：

org.hibernate.HibernateException：非法尝试关联具有两个打开的会话的代理[com.sustavov.bank.entity.Client＃1]

如果在Dao课堂中，我会做getCurrentSession()，但openSession()除外。我有一个错误：

javax.persistence.TransactionRequiredException：没有事务在进度

SpringBoot @RestController再一个@Transactional方法

0 个答案: