Spring Data JPA @Query找不到映射类

Question

我正在使用Spring Data JPA并尝试运行这样的查询：

@Query(value="select i.content from Item i where i.itemOrder = :order")
List<String> findContentByItemOrder(@Param("order")Integer itemOrder);

但它抛出异常： org.hibernate.hql.internal.ast.QuerySyntaxException：项目未映射[从项目i中选择i.content，其中i.itemOrder =：order]

所以当我运行时：

@Query(value="select i.content from package.name.Item i where i.itemOrder = :order")
List<String> findContentByItemOrder(@Param("order")Integer itemOrder);

一切都像预期的那样有效。我的配置：

@Bean
public EntityManagerFactory entityManagerFactory() {
    LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();

    HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
    vendorAdapter.setGenerateDdl(true);

    factory.setJpaVendorAdapter(vendorAdapter);
    factory.setPackagesToScan("package.name");
    factory.setDataSource(dataSource);
    factory.setJpaProperties(createProperties());
    factory.afterPropertiesSet();

    return factory.getObject();
}

private Properties createProperties(){
    Properties properties = new Properties();
    properties.setProperty("hibernate.dialect", "org.hibernate.dialect.PostgreSQLDialect");
    properties.setProperty("hibernate.show_sql", "true");
    properties.setProperty("hibernate.hbm2ddl.auto", "validate");

    return properties; 
}

我正在使用：Spring Data Jpa 1.3.1.RELEASE，Hiberante 4.2，Spring 3.2.1

问题是我不想在我的Query中为每个类名设置 package.name 。如何设置Spring Data JPA以自动查找映射类？