Spring 中的事務(wù)管理

官方文檔：http://mybatis.org/spring/zh/transactions.html

• 聲明式事務(wù)：AOP
• 編程式事務(wù)：需要在代碼中進(jìn)行事務(wù)管理

如果不配置事務(wù), 可能存在數(shù)據(jù)提交不一致的情況

如果不在Spring中去配置聲明式事務(wù), 我們就需要在代碼中手動配置事務(wù)

事務(wù)在項目開發(fā)中十分重要, 涉及到數(shù)據(jù)的一致性和完整性問題, 不容馬虎

<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:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        https://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        https://www.springframework.org/schema/tx/spring-tx.xsd">

    
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useSSL=true&useUnicode=true&characterEncoding=utf8"/>
        <property name="username" value="root"/>
        <property name="password" value="123456"/>
    bean>

    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        
        <property name="mapperLocations" value="classpath:com/pro/mapper/*.xml"/>
    bean>

    
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
        
        <constructor-arg index="0" ref="sqlSessionFactory"/>
    bean>

    
    
    
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <constructor-arg ref="dataSource" />
    bean>

    
    
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        
        
        <tx:attributes>
            <tx:method name="add" propagation="REQUIRED"/>
            <tx:method name="delete" propagation="REQUIRED"/>
            <tx:method name="update" propagation="REQUIRED"/>
            <tx:method name="query" read-only="true"/>
            <tx:method name="*" propagation="REQUIRED"/>
        tx:attributes>
    tx:advice>

    
    <aop:config>
        
        <aop:pointcut id="txPointCut" expression="execution(* com.pro.mapper.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
    aop:config>
beans>