@transcational 注解配置的基本方法
http://openwares.net/java/spring_mybatis_transaction.html
http://docs.spring.io/spring/docs/3.2.4.RELEASE/spring-framework-reference/html/transaction.html
http://blog.youkuaiyun.com/bao19901210/article/details/41724355
Spring NoSuchBeanDefinitionException
其中最后一个异常和@transcational事务添加后的注入有关
记录一下,忘得太快。