JPA配置详解之jpaProperties用法

<?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:aop="http://www.springframework.org/schema/aop"
	xmlns:jpa="http://www.springframework.org/schema/data/jpa"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">
	
	<!-- spring自动读取指定位置的配置为简到spring中 -->
	<context:property-placeholder location="classpath*:/application.properties"/>
	
	<context:component-scan base-package="com.shiroweb">
		<!-- 扫描com.shiroweb包下除去@Controller以外注解的类 -->
		<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
		<context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
	</context:component-scan>
	
	<!-- c3p0数据源配置 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="driverClass" value="${jdbc.driver}"/>
		<property name="jdbcUrl" value="${jdbc.url}" />
		<property name="user" value="${jdbc.username}"/>
		<property name="password" value="${jdbc.password}"/>
	</bean>
	
	<!-- Jpa Entity Manager 配置 关联hibernateJpaVendorAdapter -->
	<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> 
		<property name="dataSource" ref="dataSource"/>
		<property name="jpaVendorAdapter" ref="hibernateJpaVendorAdapter"/>
		<property name="packagesToScan" value="com.shiroweb"/>
		<!-- <property name="jpaProperties">
			<props>
				命名规则 My_NAME->MyName
				<prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>
				实体类对应数据库没有表 就生成一个表
				<prop key="hibernate.hbm2ddl.auto">update</prop>
			</props>
		</property> -->
		
		<!-- 指定JPA属性；如Hibernate中指定是否显示SQL的是否显示、方言等 -->
		<property name="jpaProperties">
           <props>
               <!-- <prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop> -->
               <prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>
               <!-- <prop key="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</prop> -->
               <prop key="hibernate.show_sql">true</prop>
               <prop key="hibernate.format_sql">true</prop>
               <!-- <prop key="hibernate.hbm2ddl.auto">validate</prop> -->
               <prop key="hibernate.hbm2ddl.auto">update</prop>
           </props>
       </property>
	</bean>
	
	<!-- 配置hibernateJpaVendorAdapter关联数据源 -->
	<bean id="hibernateJpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
		<property name="database" value="MYSQL" />  
        <property name="showSql" value="true" /> 
	</bean>
	
	<!-- Spring Data Jpa配置 -->
 	<jpa:repositories base-package="com.shiroweb"  transaction-manager-ref="transactionManager" entity-manager-factory-ref="entityManagerFactory"/>
   
	<!-- Jpa 事务配置 -->
	<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
		<property name="entityManagerFactory" ref="entityManagerFactory"/>
	</bean>
 
	<!-- 使用annotation定义事务 -->
	<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" />
</beans>

<!-- 指定JPA属性；如Hibernate中指定是否显示SQL的是否显示、方言等 -->
 <property name="jpaProperties">
           <props>
               <!-- <prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop> -->
               <prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>
               <!-- <prop key="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</prop> -->
               <prop key="hibernate.show_sql">true</prop>
               <prop key="hibernate.format_sql">true</prop>
               <!-- <prop key="hibernate.hbm2ddl.auto">validate</prop> -->
               <prop key="hibernate.hbm2ddl.auto">update</prop>
           </props>
       </property>

<prop key="hibernate.hbm2ddl.auto">update</prop>

import lombok.Data;
import javax.persistence.*; 
@Entity
@Data
public class Car{ 
    @Id
    @Column(name="id", nullable = false)
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
 
    @Column(nullable = false)
    private String price;
 
    @Column
    private String color;
 
    @Column
    private String brand;
}