我把spring-cloud版本降到Hoxton.SR9 及以下就不会出现这个问题，原文https://github.com/alibaba/Sentinel/issues/2065
Error creating bean with name 'com.example.demo.ProviderFacade': Requested bean is currently in creation: Is there an unresolvable circular reference?
原文：https://www.cnblogs.com/wangdongpython/p/14627179.html
