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This article shows you the springboot initialization error Failed to instantiate [XXX]: what to do with Specified class is an interface, the content is concise and easy to understand, it will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

Org.springframework.beans.BeanInstantiationException: Failed to instantiate [XXX]: Specified class is an interface

The following error occurred in my work today. At first, I thought it was due to carelessness and lack of annotations (the blogger project is springboot+mybatis architecture, all configured with annotations)

Some of the errors are as follows

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [cn.com.depeng.yan.product.dao.PrpdProductDao]: Specified class is an interface at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate (SimpleInstantiationStrategy.java:68) ~ [spring-beans-4.3.17.RELEASE.jar:4.3.17.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean (AbstractAutowireCapableBeanFactory.java:1155) ~ [spring-beans-4.3.17. RELEASE.jar:4.3.17.RELEASE]... 43 common frames omitted

It turned out that there was a sysUserDao class with the same name in another package, and it worked well after renaming. But the console error report is too misleading, isn't it?

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