第10講 接上一篇第10講 SpringBoot事物管理
阿新 • • 發佈：2018-11-16
9，在accountServiceImpl中的方法中設定異常程式碼 int num =1/0，測試，
| public void transferAccounts(int fromUser, int toUser, float account) { Account fromAccount = accountDao.findById(fromUser).get(); fromAccount.setBalance(fromAccount.getBalance()-account); accountDao.save(fromAccount); Account toAccount = accountDao.findById(toUser).get(); toAccount.setBalance(toAccount.getBalance()+account); int num= 1/0; accountDao.save(toAccount); } |
測試結果：
10，在accountServiceImpl中的方法上新增事物註解 @Transactional，測試，注意導哪個包
import javax.transaction.Transactional;
| @Transactional public void transferAccounts(int fromUser, int toUser, float account) { Account fromAccount = accountDao.findById(fromUser).get(); fromAccount.setBalance(fromAccount.getBalance()-account); accountDao.save(fromAccount); Account toAccount = accountDao.findById(toUser).get(); toAccount.setBalance(toAccount.getBalance()+account); int num= 1/0; accountDao.save(toAccount); } |