按照楼主说的nginx已经配置好，显示登录页，但是会报错，这怎么解决 XMLHttpRequest cannot load http://localhost:8000/api/v1/userInfo. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost' is therefore not allowed access. 20login:1 XMLHttpRequest cannot load http://localhost:8000/api/v1/user/login. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost' is therefore not allowed access.