无法访问后端？

[tiexi]

前端发起请求后报这个错误是什么原因？ Access to XMLHttpRequest at 'http://localhost:8080/authentication/login' from origin 'http://localhost:8081' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: Redirect is not allowed for a preflight request. 想问下这个怎么解决， 谢谢

[nnn149]

你确认下后端WebSecurity类中的corsFilter有没有在。然后别删除https，全局替换成你本机的ip再试试