在服务器的NGINX配置文件中添加一下代码
add_header 'Access-Control-Allow-Methods' 'GET,OPTIONS,POST' always;
add_header 'Access-Control-Allow-Credentials' 'true' always;
add_header 'Access-Control-Allow-Origin' '$http_origin' always;
add_header 'Access-Control-Allow-Headers' 'Authorization, Content-Type, X-Requested-With, Cache-Control' always;
if ($request_method = OPTIONS ) { return 200; }
