在我们的应用程序中，使用hibernate过滤器可以很容易地实现多租户，甚至可以实现行级ACL。您可以使用AOP和数据库中可配置的不同过滤器来代替discriminator。在调用基于访问用户的请求方法之前，应用启用休眠会话过滤器的过滤器并执行请求，在成功处理请求之后，禁用过滤器。就是这样。使用这种方式，你可以添加任何数量的过滤器到任何数量的实体，这些实体将由当前用户操作，你可以用它来做完美的资源（实体和CRUD）管理。

您可以使用Spring HandlerInterceptor沿着Spring的Open Session in View来实现这一点：

确保打开View中的Open Session

application.yml

spring:
  jpa:
    open-in-view: true

添加HandlerInterceptor

@Component
public class HibernateInterceptor implements HandlerInterceptor {

    @Autowired
    private EntityManager entityManager;

    @Override
    @Transactional
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Session session = entityManager.unwrap(Session.class);
        session.enableFilter("multi-tenant")
               .setParameter("tenant", "my-tenant-value");

        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        Session session = entityManager.unwrap(Session.class);
        session.disableFilter("multi-tenant");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        // This method is called after the response has been sent to the client
    }
}

配置HandlerInterceptor

@Configuration
public class WebConfig implements WebMvcConfigurer {

    @Autowired
    private HibernateInterceptor hibernateInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(hibernateInterceptor).order(Ordered.LOWEST_PRECEDENCE);
    }
}

关键是确保HandlerInterceptor在Spring的OpenEntityManagerInViewInterceptor之后运行-这可以通过将顺序设置为Ordered.LOWEST_PRECEDENCE来实现