声明式事务

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


    <import resource="spring-dao.xml"/>

    <bean id="userMapper" class="cn.com.codingce.mapper.UserMapperImpl">
        <property name="sqlSession" ref="sqlSession"/>
    </bean>

    <bean id="userMapper2" class="cn.com.codingce.mapper.UserMapperImpl2">
        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
    </bean>
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <!--给那些方法配置事务   事务传播propagation="REQUIRED"默认是这个-->
        <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:attributes>
    </tx:advice>

    <!--配置事务切入-->
    <aop:config>
        <aop:pointcut id="txPointCut" expression="execution(* cn.com.codingce.mapper.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
    </aop:config>


</beans>

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd">

    <!--
        遇到的问题以及解决方案
        https://blog.csdn.net/weixin_43874301/article/details/107732178
    -->

    <!--DateSource:使用Spring的数据源替换Mybatis的配置  c3p0 dbcp druid
        我们这里使用Spring提供的JDBC org.springframework.jdbc.datasource
    -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://cdb-q9atzwrq.bj.tencentcdb.com:10167/mybatis?useSSL=true"/>
        <property name="username" value="root"/>
        <property name="password" value="123456"/>
    </bean>

    <!--sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--绑定Mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <property name="mapperLocations" value="classpath:cn/com/codingce/mapper/*.xml"/>
    </bean>


    <!--SqlSessionTemplate 这就是我们使用的sqlSession-->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
        <!--只能使用构造器注入sqlSessionFactory, 因为它没有set方法-->
        <constructor-arg index="0" ref="sqlSessionFactory"/>
    </bean>

<!--    <bean id="userMapper" class="cn.com.codingce.mapper.UserMapperImpl">-->
<!--        <property name="sqlSession" ref="sqlSession"/>-->
<!--    </bean>-->

    <!--配置声明式事务-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <constructor-arg name="dataSource" ref="dataSource" />
    </bean>

    <!--结合AOP实现事务的织入-->
    <!--配置事物的类:-->

</beans>

public interface UserMapper {
    public List<User> selectUser();

    public int addUser(User user);

    public int deleteUser(int id);
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.com.codingce.mapper.UserMapper">
    <select id="selectUser" resultType="user">
        select * from user;
    </select>

    <insert id="addUser" parameterType="user">
        insert into mybatis.user (id, name, pwd) values (#{id}, #{name}, #{pwd})
    </insert>

    <delete id="deleteUser" parameterType="int">
        delete from user where id = #{id}
    </delete>
</mapper>

public class UserMapperImpl implements UserMapper {

    //我们所有操作, 都使用sqlSession来执行, 在原来, 现在都是用SqlSessionTemplate
    private SqlSessionTemplate sqlSession;

    public void setSqlSession(SqlSessionTemplate sqlSession) {
        this.sqlSession = sqlSession;
    }

    public List<User> selectUser() {
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        List<User> userList = mapper.selectUser();
        return userList;
    }

    public int addUser(User user) {
        return sqlSession.getMapper(UserMapper.class).addUser(user);
    }

    public int deleteUser(int id) {
        return sqlSession.getMapper(UserMapper.class).deleteUser(id);
    }
}

public class MyTest {

    @Test
    public void test1() throws IOException {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserMapper userMapper = context.getBean("userMapper", UserMapper.class);
        for (User user : userMapper.selectUser()) {
            System.out.println(user);
        }
    }

    @Test
    public void Test2() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserMapper userMapper = context.getBean("userMapper", UserMapper.class);
        System.out.println(userMapper.deleteUser(10));
    }

    @Test
    public void Test3() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserMapper userMapper = context.getBean("userMapper", UserMapper.class);
        User user = new User(11, "事务", "123456");
        System.out.println(userMapper.addUser(user));

    }

}