springmvc + mybatis 事务管理（全注解式）

我的事务是配置在Controller层  测试中没用Service层，在springMVC的配置文档中开启事务

<?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"
  xmlns:context="http://www.springframework.org/schema/context"
  xmlns:mvc="http://www.springframework.org/schema/mvc" 
  xsi:schemaLocation="http://www.springframework.org/schema/beans 
  http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
  http://www.springframework.org/schema/aop 
  http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
  http://www.springframework.org/schema/tx
  http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
  http://www.springframework.org/schema/context
  http://www.springframework.org/schema/context/spring-context-4.1.xsd
  http://www.springframework.org/schema/mvc  
  http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">

   <!-- (事务管理)transaction manager  dataSource等其他数据库配置信息在spring-context.xml中配置过 根据启动顺序这里能够发现dataSource -->        
    <bean id="transactionManager"  class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
        <property name="dataSource" ref="dataSource" />  
    </bean>
    <tx:annotation-driven transaction-manager="transactionManager" /> 

@Controller
@Transactional
public class Test{

@Transactional  //可不添加
public void service(HttpServletRequest request,HttpServletResponse response) throws Exception{

}

}

注意点: 1. @Transactional注解起作用的方法必须是public类型  

      2.该方法必须抛出异常. 

      3.mysql数据库类型的选择(InnoDB）