Mapped Statements collection does not contain value for cn.itsource.crm.mapper.BaseMapper.selectAll

报错信息：Mapped Statements collection does not contain value for cn.itsource.crm.mapper.BaseMapper.selectAll
看了其它很多文章都不得行，最后发现是因为mapper这个父类没加泛型类型，下图已经加上。