Expected one result (or null) to be returned by selectOne(), but found: 2问题完美解决
2016-09-17 16:14
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遇到这个问题好久了,以前以为是创建表的时候命名不规范,今天才发现是在配置文件中定义resultmap时,里边的column中的值与表中的字段不一致(当我改为一致并且和property一致后完美解决了),如果前面这样后还不能解决,那就有可能是select语句有问题,别以为在数据库中能完美得到你想要的答案,在这里是不一定行的,反正,我把select后面要查询的字段改为“*“就可以了。虽然我的问题解决了,但是我才发现我的查询语句是有逻辑错误的,虽然在数据库中能得到我要的结果。表达得不是很清楚,也是接触mybaits没多久,在这里做个记录,我也是碰到这个问题百度了好久,大都说是查询的是2个但接受的是一个实体,在接口中返回值改为LIST就行了,但是这并不能解决我的问题,因为,在我的实体中有一个list,所以记录下。
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