server { listen 80; server_name qianguo.com www.qianguo.com; rewrite ^(.*)$ https://$host$1 permanent; }
https://www.cnblogs.com/yun007/p/3739182.html
更新新的语法
server { listen 80; server_name qianguo.com www.qianguo.com; return 301 https://$server_name$request_uri; }
https://segmentfault.com/q/1010000006994159