MyBatis报错：Expected one result (or null) to be returned by selectOne(), but found: 2

Mybatis报错问题

一次项目在使用MyBatis进行高级查询的时候，如果传入的值为空报错：Expected one result (or null) to be returned by selectOne(), but found: 2

Mapper.xml如下：
MyBatis报错：Expected one result (or null) to be returned by selectOne(), but found: 2

不要在意查询的语句，我给出的思路是，如果传进来的name为空，就查询所有，不然就进行模糊查询，但是在name为空和查询出结果有多个的时候，报错:Expected one result (or null) to be returned by selectOne(), but found: 2

网上查了许久，才明白是因为返回类型对应不上

我的Mapper类
MyBatis报错：Expected one result (or null) to be returned by selectOne(), but found: 2
我给出的返回结果是一个实体类，而查询出的结果可能是多条数据，所以对应不上

修改为List集合

MyBatis报错：Expected one result (or null) to be returned by selectOne(), but found: 2

然后运行即可

自己总结了一下，出现这个错误还是因为自己对MyBatis的理解不够深