具有两个角色的一个用户的输出

I have two entities User and Role. They have a unidirectional ManyToMany connection. But when calling the list of Users, for some reason the User is returned several times with several roles.

下面我提供了代码和结果。

结果

Дебаг

使用HQL查询进行编码

 public List<User> listUsers() {
     List resultList = manager.createQuery("SELECT u FROM User u LEFT JOIN FETCH u.roles").getResultList();
     return resultList;
 }

UPD：

我找到了这个解决方案：

public List<User> listUsers() {
    List resultList = manager.createQuery("SELECT u FROM User u LEFT JOIN FETCH u.roles")
            .unwrap(org.hibernate.Query.class).setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY)
            .getResultList();
    return resultList;
}

But the criteria API is slow, it is not recommended to use it, and it is deprecated.

如何显示一个具有两个角色的用户？？？