一、整合目标
1.由IoC容器管理Hibernate的SessionFactory
2.让Hibernate使用Spring的声明式事务
二、整合步骤
先加入Hibernat,再加入Spring,再进行整合。
第一步:
配置Hibernate
1.加入Hibernate相关的包
Hibernate的必需包
c3p0包和数据库驱动包
AspectJWeaver.jar
数据库驱动包
2.添加Hibernate的配置文件hibernate.cfg.xml
a.Hibernate的数据源配置可以拿到Spring中去配置,所以无需在hibernate.cfg.xml中配置。
b.关联的.hbm.xml文件也可以在Spring配置文件中配置SessionFactory时进行配置。
c.在hibernate.cfg.xml中可以配置sql方言,sql显示,自动生成表,二级缓存等内容
3.编写实体类和对应的hbm.xml映射文件。
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<? 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"> < hibernate-configuration > < session-factory > <!-- 数据库连接用Spring配置 <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> <property name="hibernate.connection.url">jdbc:mysql://127.0.0.1:3306/mydb</property> <property name="hibernate.connection.username">root</property> --> < property name = "hibernate.dialect" >org.hibernate.dialect.MySQLDialect</ property > < property name = "show_sql" >true</ property > <!-- 类映射也可用Spring来配置 <mapping resource="com/itnba/maya/entities/Family.hbm.xml"/> <mapping resource="com/itnba/maya/entities/Info.hbm.xml"/> <mapping resource="com/itnba/maya/entities/Nation.hbm.xml"/> <mapping resource="com/itnba/maya/entities/Title.hbm.xml"/> <mapping resource="com/itnba/maya/entities/Work.hbm.xml"/> --> </ session-factory > </ hibernate-configuration > |
第二步:加入Spring
1.加入Spring包。
Spring的jar包
aspectjweaver.jar
2.加入Spring的配置文件。
配置数据源
1)建立db.properties的资源文件,配置数据源的连接信息。
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driverClass=com.mysql.jdbc.Driver jdbcUrl=jdbc:mysql://localhost:3306/mydb user=root password= minPoolSize=5 maxPoolSize=20 initialPoolSize=5 |
在Spring配置文件中导入db.properties <context:property-placehoder/>
配置实体化c3p0的数据源ComboPooledDataSource
(测试数据源配置成功)
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<!--加载资源对象 --> < context:property-placeholder location = "classpath:db.properties" /> <!-- 实例化c3p0数据源 --> < bean class = "com.mchange.v2.c3p0.ComboPooledDataSource" id = "dataSource" > < property name = "driverClass" value = "${driverClass}" ></ property > < property name = "jdbcUrl" value = "${jdbcUrl}" ></ property > < property name = "user" value = "${user}" ></ property > < property name = "password" value = "${password}" ></ property > < property name = "minPoolSize" value = "${minPoolSize}" ></ property > < property name = "maxPoolSize" value = "${maxPoolSize}" ></ property > < property name = "initialPoolSize" value = "${initialPoolSize}" ></ property > </ bean > |
2)配置Hibernate的SessionFactory——通过Spring提供的LocalSessionFactoryBean来配置
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<!-- 配置Hibernate的SessionFactory --> < bean class = "org.springframework.orm.hibernate5.LocalSessionFactoryBean" id = "factory" > <!--配置数据源属性--> < property name = "dataSource" ref = "dataSource" ></ property > <!--配置Hibernate配置文件的位置--> < property name = "configLocation" value = "classpath:hibernate.cfg.xml" ></ property > <!--配置Hibernate映射文件的位置,可以使用通配符--> < property name = "mappingLocations" value = "com/itnba/maya/entities/*.hbm.xml" ></ property > </ bean > |
3)配置Spring的声明式事务
配置事务管理器 -- HibernateTransactionManager
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<!-- 配置spring的事务管理器 --> < bean class = "org.springframework.orm.hibernate5.HibernateTransactionManager" id = "transactionManager" > <!-- 要根据hibernate的版本配置 --> < property name = "sessionFactory" ref = "factory" ></ property > </ bean > |
配置事务属性 -- 导入tx命名空间
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<!-- 配置事务属性 --> < tx:advice id = "txAdvice" transaction-manager = "transactionManager" > < tx:attributes > < tx:method name = "*" /> </ tx:attributes > </ tx:advice > |
配置事务切点,并把切点和事务属性关联起来。--导入aop命名空间
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<!-- 配置事务切入点 --> < aop:config > < aop:pointcut expression = "execution(* com.itnba.maya.entities.*.*(..))" id = "pointCut" /> < aop:advisor advice-ref = "txAdvice" pointcut-ref = "pointCut" /> </ aop:config > |
第三步:编写代码
1.在Spring配置文件中配置自动扫描的包
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<!-- 自动扫描 --> < context:component-scan base-package = "com.itnba.maya.entities" ></ context:component-scan > |
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package com.itnba.maya.entities; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Repository; @Repository //自动扫描 public class InfoDao { @Autowired //自动扫描 private SessionFactory factory; public Session getSession(){ return factory.getCurrentSession(); } public void select() { Info data = getSession().get(Info. class , "p005" ); System.out.println(data.getName()); } } |
用 main函数执行
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package com.itnba.maya.entities; import java.sql.Connection; import java.sql.SQLException; import javax.sql.DataSource; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Test { public static void main(String[] args) throws SQLException { ApplicationContext context = new ClassPathXmlApplicationContext( "beans.xml" ); InfoDao data=(InfoDao) context.getBean(InfoDao. class ); data.select(); } } |
结果:
完整的Spring配置文件
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<? 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:context = "http://www.springframework.org/schema/context" xmlns:tx = "http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd" > <!-- 自动扫描 --> < context:component-scan base-package = "com.itnba.maya.entities" ></ context:component-scan > <!--加载资源对象 --> < context:property-placeholder location = "classpath:db.properties" /> <!-- 实例化c3p0对象 --> < bean class = "com.mchange.v2.c3p0.ComboPooledDataSource" id = "dataSource" > < property name = "driverClass" value = "${driverClass}" ></ property > < property name = "jdbcUrl" value = "${jdbcUrl}" ></ property > < property name = "user" value = "${user}" ></ property > < property name = "password" value = "${password}" ></ property > < property name = "minPoolSize" value = "${minPoolSize}" ></ property > < property name = "maxPoolSize" value = "${maxPoolSize}" ></ property > < property name = "initialPoolSize" value = "${initialPoolSize}" ></ property > </ bean > <!-- 配置Hibernate的SessionFactory --> < bean class = "org.springframework.orm.hibernate5.LocalSessionFactoryBean" id = "factory" > < property name = "dataSource" ref = "dataSource" ></ property > < property name = "configLocation" value = "classpath:hibernate.cfg.xml" ></ property > < property name = "mappingLocations" value = "com/itnba/maya/entities/*.hbm.xml" ></ property > </ bean > <!-- 配置spring的声明性事务 --> < bean class = "org.springframework.orm.hibernate5.HibernateTransactionManager" id = "transactionManager" > <!-- 要根据hibernate的版本配置 --> < property name = "sessionFactory" ref = "factory" ></ property > </ bean > <!-- 配置事务属性 --> < tx:advice id = "txAdvice" transaction-manager = "transactionManager" > < tx:attributes > < tx:method name = "*" /> </ tx:attributes > </ tx:advice > <!-- 配置事务切入点 --> < aop:config > < aop:pointcut expression = "execution(* com.itnba.maya.entities.*.*(..))" id = "pointCut" /> < aop:advisor advice-ref = "txAdvice" pointcut-ref = "pointCut" /> </ aop:config > </ beans > |
另外:
Spring整合Hibernate,也可以不使用 Hibernate的配置文件,把Hibernate配置文件中的内容放在Spring的配置文件中。(一般不这么用)
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< property name = "hibernateProperties" > < props > < prop key = "hibernate.show_sql" >true</ prop > < prop key = "hibernate.dialect" >org.hibernate.dialect.MySQLDialect</ prop > .... </ props > </ property > |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.cnblogs.com/hq233/p/6671247.html