spring+JPA 事务管理

最新推荐文章于 2024-12-30 03:52:36 发布

chengyue2007

最新推荐文章于 2024-12-30 03:52:36 发布

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分类专栏： JPA 文章标签： JPA Spring 配置管理 Bean AOP

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本文介绍了如何在Spring中配置JPA事务管理器，并详细展示了applicationContext.xml文件和persistence.xml文件的具体配置方法，包括使用AOP实现事务的声明式管理。

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在使用Spring提供的JpaDaoSupport提供的支持时的事务配置问题:

1.applicationContext.xml文件的配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:aop="http://www.springframework.org/schema/aop"
 xmlns:tx="http://www.springframework.org/schema/tx"
 xsi:schemaLocation="
       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">

 <bean id="entityManagerFactory"
  class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
  <property name="persistenceUnitName" value="testjpaPU" />
  <property name="jpaVendorAdapter">
   <bean
    class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
    <property name="showSql" value="true"></property>
    <property name="generateDdl" value="true"></property>
   </bean>
  </property>
 </bean>
 <bean id="transactionManager"
  class="org.springframework.orm.jpa.JpaTransactionManager">
  <property name="entityManagerFactory"
   ref="entityManagerFactory" />
 </bean>
 <aop:config>
  <aop:pointcut id="crudMethos"
   expression_r="execution(* com.testjpa.service.impl.*.*(..))" />

<!-- 第一个*号代表可以是任意返回类型,第二个*代表包下的所有类,第三个*代表类下的所有方法,之后的(..)代表任意的参数 -->
  <aop:advisor advice-ref="txAdvice" pointcut-ref="crudMethos" />
 </aop:config>
 <tx:annotation-driven transaction-manager="transactionManager" />
 <tx:advice id="txAdvice" transaction-manager="transactionManager">
  <tx:attributes>
   <tx:method name="add*" propagation="REQUIRED" />
   <tx:method name="edit*" propagation="REQUIRED" />
   <tx:method name="delete*" propagation="REQUIRED" />
   <tx:method name="*" read-only="true"/>
  </tx:attributes>
 </tx:advice>
 <bean id="studentDao" class="com.testjpa.dao.impl.StudentDaoImpl">
  <property name="entityManagerFactory">
   <ref bean="entityManagerFactory" />
  </property>
 </bean>
 <bean id="studentService"
  class="com.testjpa.service.impl.StudentServiceImpl">
  <property name="dao">
   <ref bean="studentDao" />
  </property>
 </bean>
</beans>

2.持久单位persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence 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_1_0.xsd" version="1.0">
   
 <persistence-unit name="testjpaPU"
  transaction-type="RESOURCE_LOCAL">
  <provider>org.hibernate.ejb.HibernatePersistence</provider>
  <class>com.testjpa.bean.Stu</class>
  <properties>
   <property name="hibernate.connection.driver_class"
    value="com.mysql.jdbc.Driver" />
   <property name="hibernate.connection.url"
    value="jdbc:mysql://localhost:3306/blog" />
   <property name="hibernate.connection.username" value="root" />
   <property name="hibernate.connection.password" value="root" />
  </properties>
 </persistence-unit>

</persistence>