Question

我在Maven项目中使用Hibernate。 DBMS是MySQL。库按如下方式导入到pom中：

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>4.2.7.Final</version>
    </dependency>            
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>4.2.7.Final</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-commons-annotations</artifactId>
        <version>3.2.0.Final</version>
    </dependency>
    <dependency>
        <groupId>javax.transaction</groupId>
        <artifactId>jta</artifactId>
        <version>1.1</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.27</version>
    </dependency>

现在，当我尝试使用Netbeans运行简单的HQL查询（即from User）时，我收到以下错误：

org.hibernate.HibernateException: could not instantiate QueryTranslatorFactory: org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory
    at org.hibernate.cfg.SettingsFactory.createQueryTranslatorFactory(SettingsFactory.java:436)
    at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:258)
    at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2863)
    at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2859)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1870)
Caused by: java.lang.ClassCastException: org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory cannot be cast to org.hibernate.hql.QueryTranslatorFactory
    at org.hibernate.cfg.SettingsFactory.createQueryTranslatorFactory(SettingsFactory.java:433)
    ... 7 more

最奇怪的是我看到了ClassCastException org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory。我从here看到hibernate.cfg.xml hibernate.query.factory_class的正确配置是：

<property name="hibernate.query.factory_class">org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory</property>

此外，我的hibernate.cfg.xml配置文件是：

<hibernate-configuration>
  <session-factory>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/datadb?zeroDateTimeBehavior=convertToNull</property>
    <property name="hibernate.connection.username">root</property>
    <property name="hibernate.connection.password">root</property>
    <property name="hibernate.show_sql">true</property>
    <property name="hibernate.query.factory_class">org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory</property>
    <mapping resource="edu/project/entities/User.hbm.xml"/>
    <mapping resource="edu/project/entities/Code.hbm.xml"/>
    <mapping resource="edu/project/entities/Incident.hbm.xml"/>
  </session-factory>
</hibernate-configuration>

怎么了？

PS：MySQL服务器在线。此外，我尝试了其他查询，例如select u from User。

用于QueryTranslatorFactory的Hibernate中的ClassCastException

0 个答案: