Question

使用hibernate / jpa时，我无法在spring中自动创建表。

以下是我的配置文件：

<?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>

context.xml中

   <?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" />
      <property name="password" value="" />
     </bean>

     <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
      <property name="dataSource" ref="dataSource" />
      <property name="loadTimeWeaver">
       <bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
      </property>
      <property name="jpaVendorAdapter">
       <bean id="jpaAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
        <property name="generateDdl" value="true" />
        <property name="databasePlatform" value="org.hibernate.dialect.HSQLDialect" />
        <property name="showSql" value="true" />
       </bean>
      </property>
     </bean>

     <bean id="PictureBean" class="de.navero.server.bl.PictureBean">
      <property name="entityManagerFactory"><ref local="entityManagerFactory" /></property>
     </bean>

    </beans>

任何想法可能有什么不对？感谢您的帮助:)。

Answer 1

尝试以下方法：


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


<?xml version="1.0" encoding="UTF-8"?>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
    </property>
    <property name="jpaProperties">
        <props>
...
            <prop key="hibernate.hbm2ddl.auto">create-drop</prop>
        </props>
    </property>
    <property name="dataSource" ref="dataSource" />
</bean>

这适合我。

Answer 2

我有完全相同的问题...

评论财产

    <!--property name="generateDdl" value="true"--> in the JpaAdapter,

但设置

<property name="hibernate.hbm2ddl.auto" value="create"/> in persistence.xml

为我工作。我正在使用hsqldb。

我在日志中注意到，无论我设置什么，模式都设置为更新 persistence.xml中。

实际上拾取了persistence.xml中的值但从未应用过。我使用的是Spring 3.0.6和Hibernate 4

Answer 3

您可以尝试在spring配置文件中的HibernateJpaVendorAdapter上将generateDdl属性更改为false。

似乎与hibernate hibernate.hbm2ddl.auto属性冲突

有关详细信息，请参阅https://jira.springframework.org/browse/SPR-6836。

Answer 4

在我使用的hibernate-default.cfg.xml中

   <property name="hibernate.hbm2ddl.auto">update</property>

它完美无缺，所以配置文件如下

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory>
    <property name="dialect">
      org.hibernate.dialect.MySQLDialect
    </property>
    <property name="current_session_context_class">thread</property>
    <!-- When an HQL statement declares a true/false, replace with the standard Y/N -->
    <property name="hibernate.query.substitutions">true 'Y', false 'N'</property>
    <!-- A useful property do debugging queries.  Besure sure it is false or commented out when going PROD -->
    <!--        <property name="hibernate.show_sql">true</property>   -->
    <!-- Format the printed out SQL generated by Hibernate -->
    <property name="hibernate.format_sql">false</property>
    <!-- If enabled, Hibernate will collect statistics useful for performance tuning - JMX -->
    <property name="hibernate.generate_statistics">false</property>

    <property name="hibernate.hbm2ddl.auto">update</property>

    <mapping class=....

Answer 5

遗憾的是，这两个解决方案对我都不起作用:(。“hibernate.hbm2ddl.auto = update”也可以，因为它应该创建表格，如果它们不存在。

似乎persistence.xml中的所有属性设置都被识别为用户名，并且数据库提供程序已正确设置。遗憾的是，在启动时不会创建表，这会导致我的测试用例失败，因为SELECT语句会抛出错误...

如您所见，我已将连接URL设置为使用本地文件数据库，这允许我在测试运行后查看数据库日志。但是测试运行后日志文件仍然是空的，即使没有写入错误：（。

Answer 6

这对我有用

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="org.hsqldb.jdbcDriver" />
        <property name="url" value="jdbc:hsqldb:mem://productDb" />
        <property name="username" value="sa" />
        <property name="password" value="" />
    </bean>
<property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <property name="generateDdl" value="true" />
                <property name="showSql" value="true" />
            </bean>
        </property>

如果我将<property name="generateDdl" value="false" />更改为false，那么我会得到SqlExceptionHelper:144 - Table not found in statement

Answer 7

也许到了晚了，但今天我在为遗留应用程序编写测试时遇到了同样的问题。

我使用的是gradle test，spring 2.5和hibernate3数据库。

要解决此问题，我将数据库从HSQL更改为HSQL，将数据源从H2更改为org.springframework.jdbc.datasource.DriverManagerDataSource。

spring-context.xml如下所示：

org.apache.commons.dbcp.BasicDataSource

persistence.xml如下所示：

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

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="org.h2.Driver"/>
        <property name="url" value="jdbc:h2:mem:test"/>
        <property name="username" value="sa"/>
        <property name="password" value=""/>
    </bean>

    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
        </property>
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="dataSource" ref="dataSource"/>
        <property name="entityManagerFactory" ref="entityManagerFactory"/>
    </bean>

    <tx:annotation-driven/>
...
</beans>

我希望它有所帮助。

Answer 8

在我的情况下，没有创建表，因为使用@Table注释的对象未注释为@Entity

如何在spring / hibernate / jpa中创建自动表创建？

8 个答案: