报错 Type interface *** is not known to the MapperRegistry. 的解决方案

Posted 2021-10-24 manor的大数据奋斗之路

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报错 Type interface *** is not known to the MapperRegistry. 的解决方案
今天我在学习mybatis时碰到了这个报错：org.apache.ibatis.binding.BindingException: Type interface *** is not known to the MapperRegistry.

通过搜索引擎找了很久之后都没能找到解决方案，网上流传的比较多的解决方案是：mapper.xml文件放置到跟接口DAO.java不同名，或者是mapper.xml的namespace没有写对。但是我的错误都不是上述问题。

后来我想了想，我在写完mapper.xml后，还没在config.xml将该mapper.xml配置进来。

在config.xml中配置好mapper.xml后，项目报错的问题就解决了。

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