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 >
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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
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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 >
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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 >
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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 >
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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 >
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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 >
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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());
}
}
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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();
}
}
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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 >
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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 >
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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