(十七)Hibnernate 和 Spring 整合
一、Hibnernate 和 Spring结合方案:
- 方案一: 框架各自使用自己的配置文件,Spring中加载Hibernate的配置文件。
- 方案二: 统一由Spring的配置来管理。(推荐使用)
二、结合步骤
2.1 加载框架的jar包
2.2 框架的配置文件
hibernate.cfg.xml
<session-factory>
<property name="myeclipse.connection.profile">
com.jdbc.mysql.Driver
</property>
<property name="connection.url">
jdbc:mysql://127.0.0.1:3306/test
</property>
<property name="connection.username">root</property>
<property name="connection.password"></property>
<property name="connection.driver_class">
com.p6spy.engine.spy.P6SpyDriver
</property>
<property name="dialect">
org.hibernate.dialect.MySQLDialect
</property>
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<property name="current_session_context_class">thread</property>
<mapping class="bean.StudentBean" />
<mapping class="bean.ClassBean" />
<mapping class="bean.BlobBEAN" /> </session-factory>
spring.xml:
<?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:util="http://www.springframework.org/schema/util"
xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd "> <context:component-scan base-package="service"></context:component-scan> <!-- 自动扫描,把 service包里带有@Component注解的类注册为spring上下问的bean--> <bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="configLocation" value="classpath:hibernate.cfg.xml"></property> <!-- 在spring中加载hiberntae的配置 -->
</bean> </beans>
StudentService .java 测试在spring中通过DI方式注入SessionFactory
package service; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service; import bean.StudentBean; @Component("studentService")
public class StudentService { @Autowired
private SessionFactory sessionFactory; public void save(){ Session session=null;
Transaction tran=null; try {
session=sessionFactory.getCurrentSession();
tran=session.beginTransaction();
StudentBean stu=new StudentBean();
stu.setStuId(3);
stu.setClassId("3");
stu.setStuName("admin3");
session.save(stu); tran.commit();
} catch (Exception e) {
e.printStackTrace();
tran.rollback();
}finally{
//getCurrentSession无须手动关闭
} } /**
* 测试在spring中通过DI方式注入SessionFactory
* 本类的save方法的事务是由Hibernate管理的,所以要在hibernate配置文件的设置
* <property name="current_session_context_class">thread</property>
* @param args
*/
public static void main(String[] args) {
ApplicationContext context=new ClassPathXmlApplicationContext("spring.xml");
StudentService stuService=(StudentService)context.getBean("studentService");
stuService.save();
} }
- Test_Transaction.java测试在spring管理事务。(Hibernate不再参与事务的提交与回滚)
package test; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Controller; import service.TransactionService; /**
* 测试在spring管理事务。(Hibernate不再参与事务的提交与回滚)
* @author 半颗柠檬、
*
*/ @Controller(value="tranTest")
public class Test_Transaction { @Autowired
private TransactionService tranService; public static void main(String[] args) throws Exception {
ApplicationContext context=new ClassPathXmlApplicationContext("spring.xml"); Test_Transaction stuTest=(Test_Transaction)context.getBean("tranTest");
stuTest.tranService.save_a(); }
}
- TransactionService .java
package service; import javax.transaction.Transactional; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service; import dao.StudentDao; @Service
@Transactional
public class TransactionService {
@Autowired
private StudentDao stuDao; public void save_a() throws Exception{
stuDao.save_1();
stuDao.save_2(); } }
StudentDao .java
package dao; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository; import bean.StudentBean; @Repository(value = "stuDao")
public class StudentDao { @Autowired
private SessionFactory sessionFactory; public void save_1() throws Exception {
Session session = null; try {
session = sessionFactory.getCurrentSession();
StudentBean stu = new StudentBean();
stu.setStuId(15);
stu.setClassId("3");
stu.setStuName("admin3");
session.save(stu);
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e);
} } public void save_2() throws Exception {
Session session = null;
try { session = sessionFactory.getCurrentSession();
StudentBean stu = new StudentBean();
stu.setStuId(1);
stu.setClassId("3");
stu.setStuName("admin3");
session.save(stu); } catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e);
} } }
- spring.xml修改为如下:
<?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:util="http://www.springframework.org/schema/util"
xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd "> <context:component-scan base-package="service"></context:component-scan> <!-- 自动扫描,把 service包里带有@Component注解的类注册为spring上下问的bean -->
<context:component-scan base-package="dao"></context:component-scan>
<context:component-scan base-package="test"></context:component-scan> <bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="configLocation" value="classpath:hibernate.cfg.xml"></property> <!-- 在spring中加载hiberntae的配置 -->
</bean> <bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<constructor-arg index="0" name="url"
value="jdbc:mysql://127.0.0.1:3306/user?useUnicode=true&characterEncoding=UTF-8"></constructor-arg>
<constructor-arg index="1" name="username" value="root"></constructor-arg>
<constructor-arg index="2" name="password" value=""></constructor-arg>
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
</bean> <!-- 第一种方式:使用xml配置来配置声明式事务 -->
<bean name="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="dataSource" ref="dataSource"></property>
<property name="sessionFactory" ref="sessionFactory"></property>
</bean> <tx:advice id="advice_1" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="*" propagation="SUPPORTS" />
</tx:attributes>
</tx:advice> <aop:config>
<!-- Pointcut 是指那些方法需要被执行"AOP",是由"Pointcut Expression"来描述的. -->
<aop:pointcut expression="execution(* service.*.*(..))"
id="point_1" />
<aop:advisor advice-ref="advice_1" pointcut-ref="point_1" />
</aop:config> <!-- 第一种方式结束 --> <!-- 第二种方式:使用事务注解来配置声明式事务 --> <bean name="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="dataSource" ref="dataSource"></property>
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager" /> <!-- 第二种方式结束 --> </beans>
- hibernate.cfg.xml修改如下:
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<!-- Generated by MyEclipse Hibernate Tools. -->
<hibernate-configuration> <session-factory>
<property name="myeclipse.connection.profile">
com.jdbc.mysql.Driver
</property>
<property name="connection.url">
jdbc:mysql://127.0.0.1:3306/test
</property>
<property name="connection.username">root</property>
<property name="connection.password"></property>
<property name="connection.driver_class">
com.p6spy.engine.spy.P6SpyDriver
</property>
<property name="dialect">
org.hibernate.dialect.MySQLDialect
</property>
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<property name="current_session_context_class">org.springframework.orm.hibernate4.SpringSessionContext</property>
<mapping class="bean.StudentBean" />
<mapping class="bean.ClassBean" />
<mapping class="bean.BlobBEAN" /> </session-factory> </hibernate-configuration>
- 注意: 如果把hibernate的事务交给spring管理,那么配置必须修改为<property name="current_session_context_class">org.springframework.orm.hibernate4.SpringSessionContext</property> ,如果事务还是在hibernate里管理,则<property name="current_session_context_class">thread</property>
全部代码在: 链接
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