Spring事务管理之开启声明式事务

末蓝、 2021-09-21 16:02 490阅读 0赞

## Spring 中的事务管理 ##

官方文档：[http://mybatis.org/spring/zh/transactions.html][http_mybatis.org_spring_zh_transactions.html]

*  声明式事务：AOP
 *  编程式事务：需要在代码中进行事务管理

如果不配置事务, 可能存在数据提交不一致的情况

如果不在Spring中去配置声明式事务, 我们就需要在代码中手动配置事务

事务在项目开发中十分重要, 涉及到数据的一致性和完整性问题, 不容马虎

<?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: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>

[http_mybatis.org_spring_zh_transactions.html]: http://mybatis.org/spring/zh/transactions.html