<?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: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.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"><!-- 配置自动扫描的包 --><context:component-scan base-package="com.atguigu.jpa"></context:component-scan><!-- 配置 C3P0 数据源 --><context:property-placeholder location="classpath:db.properties"/><bean id="dataSource"class="com.mchange.v2.c3p0.ComboPooledDataSource"><property name="user" value="${jdbc.user}"></property><property name="password" value="${jdbc.password}"></property><property name="driverClass" value="${jdbc.driverClass}"></property><property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>    <!-- 配置其他属性 --></bean><!-- 配置 EntityManagerFactory --><bean id="entityManagerFactory"class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"><property name="dataSource" ref="dataSource"></property><!-- 配置 JPA 提供商的适配器. 可以通过内部 bean 的方式来配置 --><property name="jpaVendorAdapter"><bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"></bean></property>    <!-- 配置实体类所在的包 --><property name="packagesToScan" value="com.atguigu.jpa.spring.entities"></property><!-- 配置 JPA 的基本属性. 例如 JPA 实现产品的属性 --><property name="jpaProperties"><props><prop key="hibernate.show_sql">true</prop><prop key="hibernate.format_sql">true</prop><prop key="hibernate.hbm2ddl.auto">update</prop></props></property></bean><!-- 配置 JPA 使用的事务管理器 --><bean id="transactionManager"class="org.springframework.orm.jpa.JpaTransactionManager"><property name="entityManagerFactory" ref="entityManagerFactory"></property>    </bean><!-- 配置支持基于注解是事务配置 --><tx:annotation-driven transaction-manager="transactionManager"/></beans>

jdbc.user=root
jdbc.password=1230
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql:///jpa