Question

使用JPA里怎么配置使运行时输出SQL语句

Answer 1

<bean id="propertyPlaceholderConfigurer" class="org.springframework.beans.factory.config.
PropertyPlaceholderConfigurer"
p:locations-ref="locations"
p:order="1" />
<util:list id="locations">

Answer 2

引用庆峰科技的回答：
<bean id="propertyPlaceholderConfigurer" class="org.springframework.beans.factory.config.
PropertyPlaceholderConfigurer"
p:locations-ref="locations"
p:order="1" />
<util:list id="locations">

<bean id="jpaDialect" class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />

<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="ds1" />
<property name="jpaDialect" ref="jpaDialect" />
<!-- 显示SQL语句配置 -->
<property name="jpaProperties">
<props>
<prop key="hibernate.max_fetch_depth">3</prop>
<prop key="hibernate.jdbc.fetch_size">18</prop>
<prop key="hibernate.jdbc.batch_size">10</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="javax.persistence.validation.mode">none</prop>
<prop key="hibernate.hbm2ddl.auto">none</prop>
</props>
</property>
</bean>