nginx访问http80端口跳转https443端口

    在配置文件中加入下面代码

server {

    ...

    if ($server_port = 80){ 

return 301 https://$server_name$request_uri;} 

if ($scheme = http){ 

return 301 https://$server_name$request_uri;} 

error_page 497 https://$server_name$request_uri;

    ....

}