A query was run and no Result Maps were found for the Mapped Statement _Statement

一身转战三千里，一剑曾百万师。这篇文章主要讲述A query was run and no Result Maps were found for the Mapped Statement相关的知识，希望能为你提供帮助。
Cause: org.apache.ibatis.executor.ExecutorException: A query was run and no Result Maps were found for the Mapped Statement ‘com.shadow.foretaste.UserInfoDao.getPhoneNum‘. It‘s likely that neither a Result Type nor a Result Map was specified.
导致这个错误的原因是:
mapper.xml中没有指定返回值类型

< select id="getPhoneNum" > select phone_num from user_info where id = #{id} < /select>

修改后:

< select id="getPhoneNum" resultType="String"> select phone_num from user_info where id = #{id} < /select>

【A query was run and no Result Maps were found for the Mapped Statement】本文出自 “数据挖掘工程师的成长历程” 博客，请务必保留此出处http://qianqiansun.blog.51cto.com/13271301/1965502