mybatis错误记录

1.UserMapper is not known to the MapperRegistry.

错误缘由：a.mapperxml　　

<mapper namespace="name">

　　　　　b.主配置没添加mapperxml　　

<!-- 加载映射文件 -->
    <mappers>
        <mapper resource="cn/itming/mybatis/mapper/User.xml"/>
    </mappers>