java - 即使调试正常，Hibernate 也不删除对象？

Question

我正在尝试使用 Hibernate 删除一个对象，但没有删除。

我调试了程序以确保对象正确并且确实如此，所以我猜测问题可能出在我不知道它是什么的地方......注释，配置？也许有人可以帮忙!

这是程序:

Controller :

// Erased the imports to make it simpler

@RestController
public class Controlador {

    @Autowired
    private FisicHostDao fisicHostDao;
    @Autowired
    private CredentialService credentialService;

    @RequestMapping(value = "/fisicHost/{id}/credentials", method = RequestMethod.GET, produces = APPLICATION_JSON_UTF8_VALUE)
    public List<Credential> credentialsByFisicHost(@PathVariable(value = "id") final Long fisicHostId, ModelMap modelMap){
        FisicHost optionalFisicHost = fisicHostDao.findById(fisicHostId);

        if (optionalFisicHost == null) {
            // Responder con 404
        }
        FisicHost fisicHost = optionalFisicHost;
        return fisicHost.getCredentials();
    }

    // This is the method handling the request / response

    @RequestMapping(value = "/fisicHost/{id}/credentials", method = RequestMethod.POST)
    public String deleteCredential(@PathVariable(value = "id") String credId){
        String[] parts = credId.split("-");
        int id = Integer.parseInt(parts[1]);
        Credential c = credentialService.getCredentialById(id);
        credentialService.delete(c);
        return "justreturnsomething";
    }
}

正如您在图片中看到的，该对象不为空，并且它确实与我要删除的对象匹配......

那为什么不删除呢？

Answer 1

我猜您需要提交一个事务，以便删除实际上被提交到数据库。

参见Transaction

例如:

Session session = sessionFactory.openSession();
try {
   session.beginTransaction();
   try {   
      doHibernateStuff(session);
      session.getTransaction().commit(); 
   } catch (Exception e) {
      session.getTransaction().rollback();
      throw e;
   } 
} finally {
   session.close();
}