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使用hibernate/jpa时,我无法在spring中自动创建表.

这是我的配置文件:

<?xml version="1.0" encoding="UTF-8"?>
<persistence 
   xmlns="http://java.sun.com/xml/ns/persistence"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://java.sun.com/xml/ns/persistence 
   http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
   version="1.0">

    <persistence-unit name="naveroTest">
     <provider>org.hibernate.ejb.HibernatePersistence</provider>
     <class>xxx</class>
        ...


        <properties>
            <property name="hibernate.archive.autodetection" value="class, hbm"/>
            <property name="hibernate.show_sql" value="true"/>
            <property name="hibernate.connection.driver_class" value="org.hsqldb.jdbcDriver"/>
   <property name="hibernate.connection.url" value="jdbc:hsqldb:file:/tmp/naveroTestDB"/>
            <property name="hibernate.connection.username" value="sa"/>
            <property name="hibernate.connection.password" value=""/> 
            <property name="hibernate.hbm2ddl.auto" value="create"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/>
        </properties>
    </persistence-unit>
</persistence>

的context.xml

   <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns:tx="http://www.springframework.org/schema/tx"
        xmlns="http://www.springframework.org/schema/beans" 
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
                            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
                           http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-2.0.4.xsd">

     <!-- For auto creation of tables -->
     <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
      <property name="driverClassName" value="org.hsqldb.jdbcDriver" />
      <property name="url" value="jdbc:hsqldb:file:/tmp/naveroTestDB" />
      <property name="username" value="sa" …