当多个用户使用系统时，依赖项注入冲突

Question

I made a single Java Application using Tomcat(Prod) and Jetty(Dev) + Hibernate + Spring + Spring MVC + Fremarker I have a issue to solve, 'cause the users are reporting that only one user can do login without conflict. If a user does login and tries to create a new entity Payment, he have a successfull transaction. But when another user does login, since then, nobody can create a new Payment.

There is no exception, a POST is executed, but seems like the Controller is not able for delivery the form to services classes.

@MappedSuperclass
@Getter
@Setter
public abstract class AbstractEntity implements Persistable, Cloneable {

//code...

}

@Entity
@Getter
@Setter
public class Pagamento extends AbstractEntity{

//code...

}

@Component
@Transactional
public class PagamentoService {

//code...

}

@Controller
@RequestMapping("/payments")
public class PagamentosController {

//code...

}

Is everything okay about Annotations and CDI? What could to be happening?

Answer 1

A common use case for that is using attributes of controller (or service, dao, etc.) classes. All those beans are singleton beans and are shared between all requests and sessions. You should only use local variables in all those singleton beans - except of course for attributes that are common for the whole application ...

Answer 2

可能是因为您使用的是单连接数据源，所以一旦一个请求建立了连接，那么在第一个释放单个数据库连接之前，没有其他请求可以访问它。