如何使用 Nginx 將 domain.com 重定向到 www.domain.com？

我想將 domain.com 重定向到我的 Nginx 伺服器上的 www.domain.com。但我的配置不起作用，並在 Internet 瀏覽器中顯示錯誤消息：

頁面未正確重定向

我添加了這一行來進行重定向：

return 301 $scheme://www.s1biose.com$request_uri;

如何糾正這個錯誤？這是我的配置：

server {
   #listen 80;
   #listen [::]:80 ipv6only=on;
   server_name s1biose.com www.s1biose.com;
   return 301 $scheme://www.s1biose.com$request_uri;
   root /var/www/www-s1biose-com/web;

   location = /favicon.ico {
       log_not_found off;
       access_log off;
   }

   location = /robots.txt {
       allow all;
       log_not_found off;
       access_log off;
   }

   location ~* \.(txt|log)$ {
       allow 192.168.0.0/16;
       deny all;
   }

   location ~ \..*/.*\.php$ {
       return 403;
   }

   location ~ ^/sites/.*/private/ {
       return 403;
   }

   location ~ ^/sites/[^/]+/files/.*\.php$ {
       deny all;
   }

   location ~* ^/.well-known/ {
       allow all;
   }

   location ~ (^|/)\. {
       return 403;
   }

   location / {
       try_files $uri /index.php?$query_string;
   }

   location @rewrite {
       rewrite ^/(.*)$ /index.php?q=$1;
   }

   location ~ /vendor/.*\.php$ {
       deny all;
       return 404;
   }

   location ~ '\.php$|^/update.php' {
       fastcgi_split_path_info ^(.+?\.php)(|/.*)$;
       include fastcgi_params;
       fastcgi_param HTTP_PROXY "";
       fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
       fastcgi_param PATH_INFO $fastcgi_path_info;
       fastcgi_param QUERY_STRING $query_string;
       fastcgi_intercept_errors on;
       fastcgi_pass unix:/var/run/php/php7.3-fpm.sock;
   }

   location ~ ^/sites/.*/files/styles/ {
       try_files $uri @rewrite;
   }

   location ~ ^(/[a-z\-]+)?/system/files/ {
       try_files $uri /index.php?$query_string;
   }

   location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
       try_files $uri @rewrite;
       expires max;
       log_not_found off;
   }

   listen [::]:443 ssl http2 ipv6only=on;
   listen 443 ssl http2;
   ssl_certificate /etc/letsencrypt/live/s1biose.com/fullchain.pem;
   ssl_certificate_key /etc/letsencrypt/live/s1biose.com/privkey.pem;
   include /etc/letsencrypt/options-ssl-nginx.conf;
   ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
}

server {
   if ($host = www.s1biose.com) {
       return 301 https://$host$request_uri;
   }


   if ($host = s1biose.com) {
       return 301 https://$host$request_uri;
   }

   listen 80;
   listen [::]:80;
   server_name s1biose.com www.s1biose.com;
   return 404;
}

無論是否使用 www 訪問該站點，您的“return 301”行都在執行，導致瀏覽器無休止地重定向。要只為 site.com 返回 301，請從主伺服器塊中刪除“返回 301”，只讓它監聽 www.site.com，並為 site.com 創建一個單獨的伺服器塊。

server {
   #listen 80;
   #listen [::]:80 ipv6only=on;
   server_name www.s1biose.com;
   root /var/www/www-s1biose-com/web;

   location = /favicon.ico {
       log_not_found off;
       access_log off;
   }

   location = /robots.txt {
       allow all;
       log_not_found off;
       access_log off;
   }

   location ~* \.(txt|log)$ {
       allow 192.168.0.0/16;
       deny all;
   }

   location ~ \..*/.*\.php$ {
       return 403;
   }

   location ~ ^/sites/.*/private/ {
       return 403;
   }

   location ~ ^/sites/[^/]+/files/.*\.php$ {
       deny all;
   }

   location ~* ^/.well-known/ {
       allow all;
   }

   location ~ (^|/)\. {
       return 403;
   }

   location / {
       try_files $uri /index.php?$query_string;
   }

   location @rewrite {
       rewrite ^/(.*)$ /index.php?q=$1;
   }

   location ~ /vendor/.*\.php$ {
       deny all;
       return 404;
   }

   location ~ '\.php$|^/update.php' {
       fastcgi_split_path_info ^(.+?\.php)(|/.*)$;
       include fastcgi_params;
       fastcgi_param HTTP_PROXY "";
       fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
       fastcgi_param PATH_INFO $fastcgi_path_info;
       fastcgi_param QUERY_STRING $query_string;
       fastcgi_intercept_errors on;
       fastcgi_pass unix:/var/run/php/php7.3-fpm.sock;
   }

   location ~ ^/sites/.*/files/styles/ {
       try_files $uri @rewrite;
   }

   location ~ ^(/[a-z\-]+)?/system/files/ {
       try_files $uri /index.php?$query_string;
   }

   location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
       try_files $uri @rewrite;
       expires max;
       log_not_found off;
   }

   listen [::]:443 ssl http2 ipv6only=on;
   listen 443 ssl http2;
   ssl_certificate /etc/letsencrypt/live/s1biose.com/fullchain.pem;
   ssl_certificate_key /etc/letsencrypt/live/s1biose.com/privkey.pem;
   include /etc/letsencrypt/options-ssl-nginx.conf;
   ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
}

server {
   # redirect to www
   listen [::]:443;
   listen 443;
   ssl_certificate /etc/letsencrypt/live/s1biose.com/fullchain.pem;
   ssl_certificate_key /etc/letsencrypt/live/s1biose.com/privkey.pem;
   include /etc/letsencrypt/options-ssl-nginx.conf;
   ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
   server_name s1biose.com;
   return 301 https://www.s1biose.com$request_uri;
}

server {
   # force https
   listen [::]:80 ipv6only=on;
   listen 80;
   server_name s1biose.com www.s1biose.com;
   return 301 https://www.s1biose.com$request_uri;
}

引用自：https://serverfault.com/questions/956088