//转账案例持久层接口    
public interface AccountDao {
    /**
     * @param out    :转出账号
     * @param money    :转账金额 
     */
    public void outMoney(String out,Double money);
    
    /**
     * @param in    :转入账号
     * @param money    :转账金额
     */
    public void inMoney(String in,Double money);
    
}

//转账案例持久层实现类
public class AccountDaoImpl extends JdbcDaoSupport implements AccountDao {

    /**
     * @param out    :转出账号
     * @param money    :转账金额 
     */
    @Override
    public void outMoney(String out, Double money) {
        String sql = "update account set money = money - ? where name = ?";
        this.getJdbcTemplate().update(sql,money,out);
    }

    /**
     * @param in    :转入账号
     * @param money    :转账金额
     */
    @Override
    public void inMoney(String in, Double money) {
        String sql = "update account set money = money + ? where name = ?";
        this.getJdbcTemplate().update(sql,money,in);
    }
}

//转账案例业务层接口
public interface AccountService {

    /**
     * @param out    :转出账号
     * @param in    ：转入账号
     * @param money    :转账金额
     */
    public void transfer(String out,String in,Double money);
}

//转账案例业务层实现类
@Transactional(propagation=Propagation.REQUIRED)//使用注解实现事务管理,根据需求使用不同的注解属性
public class AccountServiceImpl implements AccountService {

    //注入转账的Dao
    @Resource
    private AccountDao accountDao;

    /**
     * @param out    :转出账号
     * @param in    :转入账号
     * @param money    :转账金额 
     */
    @Override
    public void transfer( String out,  String in,  Double money) {
                //把业务操作放入内部类中----在一个事物里面(同成功，同失败)
                accountDao.outMoney(out, money);
                int i = 1/0;   //异常测试
                accountDao.inMoney(in, money);
    }
}

<?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:context="http://www.springframework.org/schema/context" 
       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-4.0.xsd
       http://www.springframework.org/schema/context 
       http://www.springframework.org/schema/context/spring-context-4.0.xsd
       http://www.springframework.org/schema/tx 
       http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
    
    <!-- 引入外部属性文件 -->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    
    <!-- 配置c3p0连接池 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value=http://www.mamicode.com/"${jdbc.driverClass}"></property>
        <property name="jdbcUrl" value=http://www.mamicode.com/"${jdbc.url}"></property>
        <property name="user" value=http://www.mamicode.com/"${jdbc.username}"></property>
        <property name="password" value=http://www.mamicode.com/"${jdbc.password}"></property>
    </bean>
           
     <!-- 配置业务层类 -->
     <bean id="accountService" class="cn.xl.spring.demo4.AccountServiceImpl">
     </bean>
     
     <!-- 配置持久层类 -->
     <bean id="accountDao" class="cn.xl.spring.demo4.AccountDaoImpl">
         <property name="dataSource" ref="dataSource"></property>
     </bean>
     
     <!-- 事物管理器配置 -->
     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
         <property name="dataSource" ref="dataSource"></property>
     </bean>
     
     <!-- 开启注解事物 -->
     <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

//spring声明式事物管理的方式二的测试类：基于AspectJ的XML配置
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext4.xml")
public class SpringDemo4 {
    //需注入业务层代理对象
    @Resource(name="accountService")
    private AccountService accountService;
    
    @Test
    public void demo4(){
        accountService.transfer("aaa", "bbb", 200d);
    }
}