Question

我是hibernate的新手，我写了一个简单的bean：User。虽然我可以在我的java代码中使用configuration.addResource("User.hbm.xml")直接配置它，但是当我通过hibernate.cfg.xml配置它时：

<hibernate-configuration>

<session-factory>

    <!-- Database connection settings -->
    <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="connection.url">jdbc:mysql://localhost:3306/test</property>
    <property name="connection.username">root</property>
    <property name="connection.password">1234</property>

    <!-- JDBC connection pool(use the built-in) -->
    <property name="connection.pool_size">1</property>
    <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="show_sql">true</property>
    <property name="hbm2ddl.auto">none</property>

    <!-- List of XML mappings -->
    <mapping resource="User.hbm.xml"/>

</session-factory>

应用程序未配置User实体，它运行时出现错误：

Exception in thread "main" org.hibernate.MappingException: Unknown entity: com.philip.fin.test.User
at org.hibernate.internal.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:781)
at org.hibernate.internal.SessionImpl.getEntityPersister(SessionImpl.java:1520)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:100)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:192)
at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:38)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:177)
at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:32)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:73)
at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:679)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:671)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:666)
at com.philip.fin.test.TestHibernate.main(TestHibernate.java:37)

下面粘贴的User.hbm.xml文件：

<hibernate-mapping>
     <class name="com.philip.fin.test.User" table="User_table" catalog="test">
         <id name="userId" column="User_Id">
             <generator class="increment"/>
         </id>
         <property name="userName" column="User_Name" type="string"/>
         <property name="userMessage" column="User_Message type="string"/>
      </class>
</hibernate-mapping>

hibernate不能通过* .hbm.xml配置POJO

0 个答案: