Java学习路线-61：MyBatis声明式事务
【摘要】 1、完整配置
（1）beans.xml
<?xml version="1.0" encoding="utf-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" x...
1、完整配置
（1）beans.xml
<?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>
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（2）mybatis-config.xml
<?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>
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（3）StudentMapper.xml
<?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>
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2、DAO
（1）接口
package com.pengshiyu.mybatis.dao;
import com.pengshiyu.mybatis.entity.Student;
public interface StudentDao { public void update(Student studentA, int id); public Student getById(int id);
}
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（2）实现
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; }
}
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3、测试
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); }
}
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文章来源: pengshiyu.blog.csdn.net，作者：彭世瑜，版权归原作者所有，如需转载，请联系作者。
原文链接：pengshiyu.blog.csdn.net/article/details/106895510
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