Mybatis报错——Mapped Statements collection already contains value for

解决办法:

看看你的mybatis-config.xml

<mappers>
    <mapper resource="mapper/SeckillDao.xml"/>
</mappers>

这个删掉。和spring-dao 的配置重复了

原文地址:https://www.cnblogs.com/linliquan/p/11759225.html