Nginx利用CORS 解决跨域

一、* 所有

Access-Control-Allow-Origin: *

二、某一个网址

add_header 'Access-Control-Allow-Origin' 'http://a.com';
add_header 'Access-Control-Allow-Credentials' 'true';
add_header 'Access-Control-Allow-Methods' 'GET';

三、判断来源

if ($http_referer ~* (a.com|b.com|c.com)  ) { 
    Access-Control-Allow-Origin: *
}

四、多个网址

set $origin "";
if ($http_origin ~* "^http://127.0.0.1$") {
        set $origin $http_origin;
}
if ($http_origin ~* "^http://localhost$") {
        set $origin $http_origin;
}
if ($request_method = 'OPTIONS') {
    add_header 'Access-Control-Allow-Origin' $origin;
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
    add_header 'Access-Control-Max-Age' 1728000;
    add_header 'Content-Type' 'text/plain charset=UTF-8';
    add_header 'Content-Length' 0;
    return 204;
}

if ($request_method = 'POST') {
    add_header 'Access-Control-Allow-Origin' $origin;
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
    add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
}

if ($request_method = 'GET') {
    add_header 'Access-Control-Allow-Origin' $origin;
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
    add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
}