spring学习(十)—事务管理（配置文件方式实现）

转载自传智博客学习视频

配置文件方式实现事务管理的步骤：
1.在配置文件中配置事务管理器
2.配置事务增强（增强的逻辑）
3.配置切面
(1)配置切入点（实际被增强的方法）
(2)配置切面，指定把哪个增强用到哪个切入点上。

1.代码组织结构

2.服务层类

package service;import dao.OrderDao;public class OrdersService {    public OrderDao orderDao;    public void setOrderDao(OrderDao orderDao) {        this.orderDao = orderDao;    }    public void accountMoney(){        orderDao.lessMoney();        int i = 10/0;        orderDao.moreMoney();    }}

3.数据库层类

package dao;import org.springframework.jdbc.core.JdbcTemplate;public class OrderDao {    public JdbcTemplate jdbcTemplate;    public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {        this.jdbcTemplate = jdbcTemplate;    }    public void lessMoney() {        String sql="update account set salary=salary+? where username=?";        jdbcTemplate.update(sql,-1000,"xiaowang");    }    public void moreMoney() {        String sql="update account set salary=salary+? where username=?";        jdbcTemplate.update(sql,1000,"xiaoma");    }}

4.测试类

package service;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class TestService {    @Test    public void testService(){        ApplicationContext context = new ClassPathXmlApplicationContext("bean.xml");        OrdersService ordersService = (OrdersService) context.getBean("ordersService");        ordersService.accountMoney();    }}

5.配置文件

<?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        http://www.springframework.org/schema/context         http://www.springframework.org/schema/context/spring-context.xsd">    <!-- 配置c3p0连接池 -->    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">        <!-- 注入属性值 -->        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>        <property name="jdbcUrl" value="jdbc:mysql:///springlearn"></property>        <property name="user" value="root"></property>        <property name="password" value="root"></property>    </bean>    <!-- 配置事务管理器 -->    <bean id="transactionManager"        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <!-- 注入dataSource -->        <property name="dataSource" ref="dataSource"></property>    </bean>    <!-- 配置事务的增强，transactionManager是上面的事务管理器的id -->    <tx:advice id="txadvice" transaction-manager="transactionManager">        <!-- 做事务操作 -->        <tx:attributes>            <!-- 设置进行事务操作的方法匹配规则 -->            <tx:method name="account*" propagation="REQUIRED"></tx:method>        </tx:attributes>    </tx:advice>    <!-- 配置切面 -->    <aop:config>        <!-- 切入点 -->        <aop:pointcut expression="execution(* service.OrdersService.*(..))"            id="pointcut1"></aop:pointcut>        <!-- 切面 -->        <aop:advisor advice-ref="txadvice" pointcut-ref="pointcut1"></aop:advisor>    </aop:config>    <bean id="ordersService" class="service.OrdersService">        <property name="orderDao" ref="orderDao"></property>    </bean>    <bean id="orderDao" class="dao.OrderDao">        <property name="jdbcTemplate" ref="jdbcTemplate"></property>    </bean>    <!-- 创建jdbc模板对象 -->    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">        <property name="dataSource" ref="dataSource"></property>    </bean></beans>