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>