spring oracle 注解

<?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/tx
     http://www.springframework.org/schema/tx/spring-tx.xsd
     http://www.springframework.org/schema/aop
     http://www.springframework.org/schema/aop/spring-aop.xsd
     http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">
        
    
    <!-- 数据源配置 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><!-- 注意ID为固定写法，否则会报错 -->
        <property name="driverClass" value="oracle.jdbc.driver.OracleDriver"></property>
        <property name="jdbcUrl" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl"></property>
        <property name="user" value="gao"></property>
        <property name="password" value="1"></property>
        <property name="initialPoolSize" value="3"></property>
        <property name="maxPoolSize" value="10"></property>
        <property name="maxStatements" value="100"></property>
        <property name="acquireIncrement" value="2"></property>
    </bean>
    <!-- JdbcTemplate工具类实例 -->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <context:component-scan base-package="cn.test.anno"></context:component-scan>
    <!-- ##################配置事务########################### -->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <tx:annotation-driven transaction-manager="txManager"/>
</beans> 
   

package cn.test.anno;

import javax.annotation.Resource;

import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

/**
 * 逻辑控制层
 * @author Gaozc
 *
 */
@Component
public class DeptService {
    @Resource
    private DeptDao deptDao;

    @Transactional
    public void save(Dept dept){
        deptDao.save(dept);
        int i=1/0;
        deptDao.save(dept);
    }
}