nginx 配置允许跨域

当前端页面和后端应用的协议、IP、端口有任意一项不一样时，就会出现跨域问题，对于这种情况我们可以在后端应用前加一个nginx ，在server{location/{ …}}中配置可以跨域

完整配置文件如下：

worker_processes  1;
events {worker_connections  1024;
}
http {include       mime.types;default_type  application/octet-stream;sendfile        on;keepalive_timeout  65;server {listen       8090;server_name  localhost;location / {add_header 'Access-Control-Allow-Origin' '*';add_header 'Access-Control-Allow-Credentials' 'true';proxy_pass http://10.18.35.246:30001;if ($request_method = OPTIONS){add_header 'Access-Control-Allow-Origin' '*';add_header 'Access-Control-Allow-Credentials' 'true';add_header 'Access-Control-Max-Age' 1728000;add_header 'Access-Control-Allow-Credentials' 'true';add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, DELETE';add_header 'Access-Control-Allow-Headers' 'reqid, nid, host, x-real-ip, x-forwarded-ip, event-type, event-id, accept, content-type';proxy_pass http://10.18.35.246:30001;return 200;}}error_page   500 502 503 504  /50x.html;location = /50x.html {root   html;}}server {listen       8091;server_name  localhost;location / {add_header 'Access-Control-Allow-Origin' '*';add_header 'Access-Control-Allow-Credentials' 'true';proxy_pass http://10.18.35.246:31001;if ($request_method = OPTIONS){add_header 'Access-Control-Allow-Origin' '*';add_header 'Access-Control-Allow-Credentials' 'true';add_header 'Access-Control-Max-Age' 1728000;add_header 'Access-Control-Allow-Credentials' 'true';add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS, DELETE';add_header 'Access-Control-Allow-Headers' 'reqid, nid, host, x-real-ip, x-forwarded-ip, event-type, event-id, accept, content-type';proxy_pass http://10.18.35.246:31001;return 200;}}error_page   500 502 503 504  /50x.html;location = /50x.html {root   html;}}}