Spring Cloud Openfeign @RequestMapping(value = "") is not supported Nullpointer

Describe the bug My rest interface is automatically generated with basePath "/" this results in a @RequestMapping(value = ""). When my spring boot application starts the bean creation fails because of a nullpointer exception:

Caused by: java.lang.NullPointerException: null at org.springframework.cloud.openfeign.support.SpringMvcContract.processAnnotationOnClass(SpringMvcContract.java:179) ~[spring-cloud-openfeign-core-3.0.0.jar:3.0.0]

It seems that the processAnnotationOnClass function can not handle empty paths

Comment From: OlgaMaciaszek

Please provide a minimal, complete, verifiable example that reproduces the issue.

Comment From: florianmack

You just need a RestController with the annotation in the title and a feignClient of this restcontroller. Wehn spring boot starts up the error will occure. I'll provide an example when I have time but let me know if you can not reproduce it

Comment From: OlgaMaciaszek

Can your please provide that Rest Controller sample code?

Comment From: spring-cloud-issues

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Comment From: spring-cloud-issues

Closing due to lack of requested feedback. If you would like us to look at this issue, please provide the requested information and we will re-open the issue.