Java org.hibernate.HibernateException:找到多个具有给定标识符的行

org.hibernate.HibernateException:找到多个具有给定标识符的行：578，用于类：com.hibernate.query.performance.persistence.model.Store

数据库没有标识符为578的重复存储行。已使用SQL对其进行检查：

SELECT * 
FROM store
WHERE store.store_id = 578;

它返回了0条记录

关于的其他问题指出，问题可能与OneTONE映射本身有关。门店和员工实体之间有OneToOne关系，我的映射如下：

员工：

@OneToOne(mappedBy = "manager_staff", cascade = CascadeType.ALL, orphanRemoval = true)
    public Store getStore() {
        return store;
    }

@OneToOne
    @JoinColumn(name = "manager_staff_id", referencedColumnName = "staff_id", nullable = false)
    public Staff getManager_staff() {
        return manager_staff;
    }

商店：

@OneToOne(mappedBy = "manager_staff", cascade = CascadeType.ALL, orphanRemoval = true)
    public Store getStore() {
        return store;
    }

@OneToOne
    @JoinColumn(name = "manager_staff_id", referencedColumnName = "staff_id", nullable = false)
    public Staff getManager_staff() {
        return manager_staff;
    }

如何修复它

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更新：

将查询修改为以下内容时，异常发生了一些变化：

Query query = session.createQuery("select c " +
                        " from Rental r, Customer c join fetch c.address address join fetch address.store store join fetch address.city city " +
                        " where r.customer = c " +
                        " and r.returnDate is null");

例外情况：

org.hibernate.HibernateException: More than one row with the given identifier was found: 2951, for class: com.hibernate.query.performance.persistence.model.Store

---

对数据库没有任何修改。我不确定HQL是否正确，因为JProfiler无法捕获任何JPA/Hibernate记录。唯一被捕获的指标是运行的JDBC连接。

您的数据有错误，

OneToOne

意味着您必须拥有该链接，因此请确保查询返回一条记录。如果需要可选，则必须将其设置为“OneToMany”