原因:IDEA有缓存,刷新一下项目就好了 解决办法: file --> Invalidate Caches /Restart. --> Invalidate and Restart 相关文章: 2021-09-18 2021-05-26 2021-05-19 2021-06-19 2022-12-23 2021-11-18 2022-12-23 2021-11-18