解决Caused by: org.apache.ibatis.executor.ExecutorException: A query was run and no Result Maps.....报错

Caused by: org.apache.ibatis.executor.ExecutorException: A query was run and no Result Maps were found for the Mapped Statement 'dao.IUserDao.findOne'.  It's likely that neither a Result Type nor a Result Map was specified.
	at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.validateResultMapsCount(DefaultResultSetHandler.java:283)
	at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:189)
	at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:64)
	at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79)
	at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63)
	at org.apache.ibatis.executor.baseExecutor.queryFromDatabase(baseExecutor.java:324)
	at org.apache.ibatis.executor.baseExecutor.query(baseExecutor.java:156)
	at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109)
	at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148)
	... 27 more

根据报错分析可知，报错的大概意思就是没有返回结果集被发现。
大概率就是配置文件有问题，如图为错误的配置文件：

只要在select标签中加上resultType标签，既：resultType=“domain.User”，引号中本人放的是对象地址，这里需要根据个人的查询需求来定，如查询出来是String类型的数据，那么引号中就该是java.long.String，既是返回类型所在的包的名称，其它类型的数据同理。
如图为正确的配置：

重新运行错误消失，程序没有报错了：