Question

我正在尝试使用Hibernate持久保存数据，并且在运行时遇到了以下异常。

实体类

select *
from (select product, dept, (sump_1 + sump_2 + sump_3) /3 as avg_max,
             row_number() over (partition by product order by (sump_1 + sump_2 + sump_3) /3 desc) as seqnum
      from (select product, dept, date, sum(percentage) as sump,
                   lag(sum(percentage)) over (partition by product, dept order by date) as sump_1,
                   lag(sum(percentage, 2)) over (partition by product, dept order by date) as sump_2
            from TBO_POS pos join
                 TBL_MV mv
                 on pos.IV_ID = mv.IV_ID
            where Date = […] and TFC in […]
            group by product, dept, date
           ) t
      ) t
where seqnum = 1;

这是import javax.persistence.*; import java.util.Date; @Entity @Table(name="FINANCES_USER") public class User { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name="USER_ID") private Long userId; @Column(name="FIRST_NAME") private String firstName; @Column(name="LAST_NAME") private String lastName; @Column(name="BIRHT_DATE", nullable = false) private Date birthDate; @Column(name = "EMAIL_ADDRESS") private String emailAddress; @Column(name = "LAST_UPDATED_DATE") private Date lastUpdatedDate; @Column(name = "LAST_UPDATED_BY") private String lastUpdatedBy; @Column(name = "CREATED_DATE", updatable = false) private Date createdDate; @Column(name = "CREATED_BY",updatable = false) private String createdBy;：

hibernate.cfg.xml

这是我的主要内容：

<hibernate-configuration>

<session-factory>

    <!-- Database connection settings -->
    <property name="connection.driver_class">com.mysql.cj.jdbc.Driver</property>
    <property name="connection.url">jdbc:mysql://localhost:3306/ifinances</property>
    <property name="connection.username">root</property>
    <property name="connection.password">root</property>

    <!-- SQL dialect -->
    <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>


    <!-- Echo all executed SQL to stdout -->
    <property name="show_sql">true</property>

    <mapping class="com.codenogo.data.entities.User"/>

</session-factory>

我在public class Application { public static void main(String[] args){ Session session = HibernateUtil.getSessionFactory().openSession(); session.getTransaction().begin(); User user = new User(); user.setBirthDate(new Date()); user.setCreatedDate(new Date()); user.setCreatedBy("Arnold"); user.setEmailAddress("argo@mail.com"); user.setFirstName("Arod"); user.setLastName("Nogo"); user.setLastUpdatedBy("Arno"); user.setLastUpdatedDate(new Date()); session.save(user); session.getTransaction().commit(); session.close(); } }课程中导入了javax.persistence.*。尽管已将实体类映射到xml配置文件中，但我无法将数据持久保存到我的数据库中。我得到了这个例外：

Entity

对此有何帮助？

Answer 1

尝试从<mapping class="com.codenogo.data.entities.User"/>文件中删除此行：hibernate.cfg.xml，因为您使用的是Annotations来映射您的实体而不是xml映射模式

Hibernate org.hibernate.MappingException：未知的实体运行时错误

1 个答案: