org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘appController’: Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [cn.speedit.extend.controller.AppController] from ClassLoader [org.springframework.boot.loader.LaunchedURLClassLoader@21b8d17c]
Start jar to report this error, the reason may be as follows:
If you restart idea, clear the idea cache or report this problem, you have to consider whether some invalid packages have been introduced (introduced unused packages)
My problem here is because a useless package is introduced in appController,
just remove this introduction
Later, after testing, the following is the cause of this error
