Spring and hibernate framework integration

Integration key points:

1. The data source dataSource is handed over to Spring

　　<!--Load properties file-->    
    <context:property-placeholder location="classpath:db.properties"/>
    <!-- Data source configuration -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driverClass}"></property>
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
        <property name="user" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

2. The object of sessionFactory is handed over to spring

<bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean" >
        <property name="dataSource" ref="dataSource"></property>
        <property name="configLocations" value="classpath:applicationContext.xml"></property>
</bean>

3. Transaction management

　　(1) Configure the platformTransationManager interface (the underlying interface)

　　　　Two implementation classes of platformTransationManager:

　　　　jdbc technology: DataSourceTransationManager (this needs to configure dataSource)

　　　　Hibernate technology: HibernateTransationManager (this needs to configure sessionFactory) (this time use this)

　　These two transaction managers are explained in detail later

　　(2) Configure the transaction manager

    <bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"></property>
    </bean>

　　(3) Management affairs

　　Method 1: Manage transactions in xml

　　　　1. Configure notifications

<!-- Specific enhancement logic--> 
<tx:advice id= " txAdvice " >
        <tx:attributes> 
　　　　　　　<!-- matches method names in business classes -->
            <tx:method name="save*"/>
            <tx:method name="update*"/>
            <tx:method name="delete*"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*" />
        </tx:attributes>
</tx:advice>

　　2. Configure aop aspect

<aop:config>
        <!-- Which methods of configuring the pointcut configuration need to be enhanced-->
        <aop:pointcut expression="execution(* cn.itcast.service.*.*(..))" id="cut"/>
        <!-- Configure aspect: apply enhanced logic to pointcut (notification + pointcut) -->
        <aop:advisor advice-ref="txAdvice" pointcut-ref="cut"/>
    </aop:config>

　　Method 2: Manage transactions by annotation

　　1. Configure the transaction manager as above

　　2. Start annotating the driver (scanning)

<tx:annotation-driven  transaction-manager="transactionManager"/>

　　3. Use annotations on service classes or methods

Spring and hibernate framework integration

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