restful访问出现This application has no explicit mapping for /error, so you are seeing this as a fallback

项目中访问测试restful，http://localhost:8080/nes4/test出现如下错误

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.

如图

解决：发现是springboot 注解未将controller扫描，添加扫描如下

 

再次启动springboot，测试http://127.0.0.1:8080/test ,成功