FastAdmin 关于跨域问题解决

之前很久之前收集到社区的问题。 https://forum.fastadmin.net/thread/277

今天又有人问到，无法打开，估计是网络问题。

以下为完整配置 ^1

1#
2# CORS header support
3#
4# One way to use this is by placing it into a file called "cors_support"
5# under your Nginx configuration directory and placing the following
6# statement inside your **location** block(s):
7#
8#   include cors_support;
9#
10# As of Nginx 1.7.5, add_header supports an "always" parameter which
11# allows CORS to work if the backend returns 4xx or 5xx status code.
12#
13# For more information on CORS, please see: http://enable-cors.org/
14# Forked from this Gist: https://gist.github.com/michiel/1064640
15#
16
17set $cors '';
18if ($http_origin ~ '^https?://(localhost|www\.yourdomain\.com|www\.yourotherdomain\.com)') {
19        set $cors 'true';
20}
21
22if ($cors = 'true') {
23        add_header 'Access-Control-Allow-Origin' "$http_origin" always;
24        add_header 'Access-Control-Allow-Credentials' 'true' always;
25        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
26        add_header 'Access-Control-Allow-Headers' 'Accept,Authorization,Cache-Control,Content-Type,DNT,If-Modified-Since,Keep-Alive,Origin,User-Agent,X-Requested-With' always;
27        # required to be able to read Authorization header in frontend
28        #add_header 'Access-Control-Expose-Headers' 'Authorization' always;
29}
30
31if ($request_method = 'OPTIONS') {
32        # Tell client that this pre-flight info is valid for 20 days
33        add_header 'Access-Control-Max-Age' 1728000;
34        add_header 'Content-Type' 'text/plain charset=UTF-8';
35        add_header 'Content-Length' 0;
36        return 204;
37}