使用实体管理器时，未为该名称定义查询

我有以下实体：

package com.server.models;
@Entity
@Table(name="users")
@NamedQueries({
    @NamedQuery(name=User.QUERY_FIND_USER,query="SELECT c FROM user c WHERE c.username = :username")
})
public class User {

    public static final String QUERY_FIND_USER = "LoginFindUser";
    //  ...
}

然后使用实体管理器（em）我正在执行以下操作：

package com.server.controllers;
@Service
@Transactional
@RestController
@RequestMapping("/user")
public class LoginController {
    @PersistenceContext
    private EntityManager em;
 // my code
    TypedQuery<User> queries = em.createNamedQuery(User.QUERY_FIND_USER,User.class).setParameter("username", username);
    List<User> users = queries.getResultList();
}

但是，我收到以下错误：

java.lang.IllegalArgumentException: No query defined for that name [LoginFindUser]

这是我的弹簧启动配置。这应该包括扫描实体。

package com.server.boot;

@Configuration
@ComponentScan({"com.server"})
@EnableAutoConfiguration
public class Starter {
    public static void main(String[] args){
        SpringApplication.run(Starter.class,args);
        System.out.println("started application");
    }

    @Bean
    public LoginController loginController(){
        return new LoginController();
    }

    @Bean
    public HibernateJpaSessionFactoryBean sessionFactory(EntityManagerFactory emf) {
         HibernateJpaSessionFactoryBean factory = new HibernateJpaSessionFactoryBean();
         factory.setEntityManagerFactory(emf);
         return factory;
    }

}