spring-data-jpa中save不触发数据库insert语句的问题

最近学习spring mvc，用到jpa简化DAO层代码，发现save死活不触发SQL语句，找了好久才解决这个问题，实在是坑。、

<!-- 关键是这个bean，一定要设置正确才行 -->
<bean id="transactionManager">

二话不说了，直接贴配置文件：

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xmlns:jpa="http://www.springframework.org/schema/data/jpa"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/jdbc
        http://www.springframework.org/schema/jdbc/spring-jdbc-4.0.xsd
        http://www.springframework.org/schema/data/jpa
        http://www.springframework.org/schema/data/jpa/spring-jpa-1.0.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
        http://www.springframework.org/schema/security
        http://www.springframework.org/schema/security/spring-security-4.0.xsd" >  

        <context:annotation-config/>
        <context:component-scan base-package="edu.zipcloud.cloudstreetmarket.core" />  

        <jpa:repositories base-package="edu.zipcloud.cloudstreetmarket.core.daos" />

<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close">
        <property name="driverClassName">
            <value>com.mysql.jdbc.Driver</value>
        </property>
        <property name="url">
            <value>jdbc:mysql://localhost:3306/testdb</value>
        </property>
        <property name="username">
            <value>root</value>
        </property>
        <property name="password">
            <value>123456</value>
        </property>
    </bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="persistenceUnitName" value="jpaData"/>
        <property name="dataSource" ref="dataSource" />
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
        </property>
        <property name="jpaProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.format_sql">true</prop>
                 <prop key="hibernate.hbm2ddl.auto">update</prop>
                <!--  <prop key="hibernate.hbm2ddl.auto">create</prop> -->
                <!-- <prop key="hibernate.hbm2ddl.auto">create-drop</prop>  -->
                <prop key="hibernate.hbm2ddl.auto">none</prop>
                <prop key="hibernate.default_schema">testdb</prop>
            </props>
        </property>
</bean>

    <!-- 密码编码器，如果不加这个，spring不知道要用哪一个 -->
    <bean id="passwordEncoder" class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder"/>

    <!-- 当容器启动时，执行SQL -->
    <jdbc:initialize-database data-source="dataSource" enabled="false">
        <jdbc:script location="classpath:/META-INF/db/init.sql"/>
    </jdbc:initialize-database>

    <!-- 事务 就是这里有问题啦 -->
    <!--  Since you're using JPA,
        the transaction manager should be a JpaTransactionManager,
        not a DataSourceTransactionManager.  -->
    <!-- <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>   -->
    <!-- fuck off !!! -->
    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <tx:annotation-driven transaction-manager="transactionManager"
        proxy-target-class="true" />
</beans>

stackoverflow上找到了原因，就是这个JPA，有一个专用的事务管理器，org.springframework.jdbc.datasource.DataSourceTransactionManager，如果用DataSourceTransactionManager就不行了。终于解决了，下次研究一下两者有什么不同。

（未完待续…………）