spring boot创建bean失败.

Error creating bean with name 'demo': Lookup method resolution failed

2022-05-21 23:37:44.156  WARN 8188 --- [           main] ConfigServletWebServerA
pplicationContext : Exception encountered during context initialization - cancel
ling refresh attempt: org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'demo': Lookup method resolution failed; nested exc
eption is java.lang.IllegalStateException: Failed to introspect Class [com.abc.c
loud.rest.DemoRest] from ClassLoader [org.springframework.boot.loader.LaunchedUR
LClassLoader@6433a2]
2022-05-21 23:37:44.160  INFO 8188 --- [           main] o.apache.catalina.core.
StandardService   : Stopping service [Tomcat]
2022-05-21 23:37:44.219  INFO 8188 --- [           main] ConditionEvaluationRepo
rtLoggingListener :

引起这个问题的原因:

1. 可能是没有写对@RestController,@Service之类;

2. 也有可能是对应的类引用了一些类,是用<systemPath>引入的,在spring boot打包时,没有包含进去.然后创建bean的时候就报错.

我碰到的诡异之处在于，

在eclipse运行不报错。在dos运行就报错了。

将<systemPath>引入的包打进jar, 可参考：

https://blog.csdn.net/abckingaa/article/details/124914722