前端访问console报错信息
Access to XMLHttpRequest at 'http://...' from origin 'http://....' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Access to XMLHttpRequest at 'http://...' from origin 'http://....' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.