nginx解决跨域问题

server{
listen 80;
server_name localhost;
location /test {
          root   html;
            proxy_read_timeout  3600;
          index  index.html index.html;
          proxy_set_header Host $host;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header X-Forwarded-Host $http_host;
          proxy_set_header X-Forwarded-Port $server_port;
          proxy_set_header X-Forwarded-Proto $scheme;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_pass http://127.0.0.1:8281/test;
         }
}