JPA自定义内涵JDBC批次大小不起作用-英雄云拓展知识分享

我尝试配置JDBC批量大小，如@vlad Mihalcea博客中所述 https://vladmihalcea.com/how-to-customize-the-jdbc-batch-size-for-persistence-comtistence-context-with-hibernate/

EntityManager entityManager =  entityManagerFactory.createEntityManager();
entityManager.getTransaction().begin();
entityManager.unwrap(Session.class).setJdbcBatchSize(5);
for(int i = 0;i<10;i++){
Charge c = new Charge();
c.setAccountNumber("acct"+i);
entityManager.persist(c);
}
entityManager.getTransaction().commit();
<bean id="entityManagerFactoryDefault"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="charg" />
<property name="persistenceUnitName" value="MaterializedView" />
<property name="persistenceXmlLocation" value="classpath*:META-INF/jpa-persistence.xml" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="generateDdl" value="false" />
<property name="showSql" value="true"/>
<property name="database">
<util:constant static-field="org.springframework.orm.jpa.vendor.Database.ORACLE" />
</property>
</bean>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.default_batch_fetch_size">500</prop>
<prop key="hibernate.jdbc.fetch_size">10</prop>
<prop key="hibernate.jdbc.batch_versioned_data">true</prop>
<prop key="hibernate.order_updates">true</prop>
<prop key="hibernate.order_inserts">true</prop>
<prop key="hibernate.jdbc.batch_size">30</prop>
<prop key="hibernate.id.new_generator_mappings">false</prop>
</props>
</property>
</bean>

但它触发了10个插入查询。

我得到此查询Hibernate：Select Charge.NextVal，来自Dual Hibernate：insert in Compart（accountnumber charding_id）valution（？，？，？）Hibernate：insert opcoment opcomen（accountnumber charding_id）valution（？，？）hibernate hibernate：insert incomeart（？） ）值（？，？）Hibernate：插入电荷（accountnumber charded_id）values（？，？）Hibernate：insert opcomen（accountnumber carued_id）value（？，？）hibernate：inceert：inceant carlation（councelnumber churome_id）值（？ ？）Hibernate：插入（accountnumber charding_id）值（？，？）Hibernate：插入负责（accountnumber charding_id）valution（？，？）Hibernate：insert opcoriant opcomen（accountnumber charding_id）valution（？，？，？）hibernate：insert：insert：insert：负责（accountNumber chardy_id）值（？，？）

我正在使用Hibernate 5.2.10。终究版本和序列作为策略。如果我的代码中有问题，有人可以纠正我吗