Java学习路线-61：MyBatis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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans.xsd
      http://www.springframework.org/schema/aop
      http://www.springframework.org/schema/aop/spring-aop.xsd
      http://www.springframework.org/schema/tx
      http://www.springframework.org/schema/tx/spring-tx.xsd
">
    <!-- 配置数据源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://127.0.0.1:3306/data"/>
        <property name="username" value="root"/>
        <property name="password" value="123456"/>
    </bean>
    <!-- 配置 sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="mybatis-config.xml"/>
    </bean>
    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg index="0" ref="sqlSessionFactory"/>
    </bean>
    <bean id="StudentDao" class="com.pengshiyu.mybatis.dao.impl.StudentDaoImpl">
        <property name="sqlSession" ref="sqlSessionTemplate"/>
    </bean>
    <!--  声明式事务管理-->
    <!--  配置事务管理器-->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!-- 配置事务通知-->
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <!-- 配置事务的传播特性-->
        <tx:attributes>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:pointcut id="pointcut"
        expression="execution(* com.pengshiyu.mybatis.dao.impl.*.* (..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/>
    </aop:config>
</beans>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <settings>
        <!-- 打印sql日志 -->
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>
    <typeAliases>
        <package name="com.pengshiyu.mybatis.entity"/>
    </typeAliases>
    <mappers>
        <mapper resource="StudentMapper.xml"/>
    </mappers>
</configuration>

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.pengshiyu.mybatis.entity.StudentMapper">
    <select id="getById" resultType="Student">
        select * from students where id = #{id}
    </select>
    <select id="selectAll" resultType="Student">
        select * from students
    </select>
    <update id="updateById" parameterType="Student">
        update students set age = #{age} where id = #{id}
    </update>
    <delete id="deleteById" parameterType="Student">
        <!-- 故意将sql写错，触发事务管理-->
        deletes from students where id = #{id}
    </delete>
</mapper>

package com.pengshiyu.mybatis.dao.impl;
import com.pengshiyu.mybatis.dao.StudentDao;
import com.pengshiyu.mybatis.entity.Student;
import org.mybatis.spring.SqlSessionTemplate;
public class StudentDaoImpl implements StudentDao {
    private SqlSessionTemplate sqlSession;
    @Override
    public Student getById(int id) {
        return sqlSession.selectOne("com.pengshiyu.mybatis.entity.StudentMapper.getById", id);
    }
    @Override
    public void update(Student studentA, int id) {
        sqlSession.update("com.pengshiyu.mybatis.entity.StudentMapper.updateById", studentA);
        sqlSession.delete("com.pengshiyu.mybatis.entity.StudentMapper.deleteById", id);
    }
    public void setSqlSession(SqlSessionTemplate sqlSession) {
        this.sqlSession = sqlSession;
    }
}

package com.pengshiyu.mybatis.test;
import com.pengshiyu.mybatis.dao.StudentDao;
import com.pengshiyu.mybatis.entity.Student;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import java.io.IOException;
public class Demo {
    public static void main(String[] args) throws IOException {
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        StudentDao studentDao = (StudentDao) context.getBean("StudentDao");
        Student studentA = studentDao.getById(1);
        studentA.setAge(25);
        studentDao.update(studentA, 3);
    }
}