JPA与Spring集成

persistence.xml

<?xml
version="1.0"
encoding="UTF-8"?>
<persistence
version="2.0"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_2_0.xsd">
<!-- 为持久化单元取名为jpa -->
<persistence-unit
name="template"transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
</persistence-unit>
</persistence>

spring配置文件

<context:property-placeholder location="classpath:jdbc.properties"/>

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${databaseDriver}"/>
<property name="url" value="${url}"/>
<property name="username" value="${username}"/>
<property name="password" value="${password}"/>
<!-- 配置连接池的初始值 -->
<property name="initialSize" value="1"/>
<!-- 连接池的最大值 -->
<!-- <property name="maxActive" value="500"/>-->
<!-- 最大空闲时，当经过一个高峰之后，连接池可以将一些用不到的连接释放，一直减少到maxIdle为止 -->
<!-- <property name="maxIdle" value="2"/>-->
<!-- 当最小空闲时，当连接少于minIdle时会自动去申请一些连接 -->
<property name="minIdle" value="1"/>
<property name="maxActive" value="100"/>

<property name="maxIdle" value="20"/>

<property name="maxWait" value="1000"/>

</bean>

<!--jpa-->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml"/>
<property name="persistenceUnitName" value="template"/>
<property name="packagesToScan" value="org.ssl.template.model"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true" />
<property name="generateDdl" value="true"/>
</bean>
</property>
</bean>

<!--事务管理-->
<bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>

<aop:config>
<aop:pointcut id="txMethod" expression="execution(*com.ssl.template.service.*.*(..))"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txMethod"/>
</aop:config>

<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="init*" propagation="REQUIRED" />
<tx:method name="*" propagation="REQUIRED" read-only="true"/>
</tx:attributes>
</tx:advice>

<!--注解管理事务-->
<!--
<tx:annotation-driventransaction-manager="txManager"/>
-->