将部分但不是全部域重定向到 https
我试图说服 mod-rewrite 将 http://example.com 重定向到 https://example.com 但不重定向 http:// subdomain.example.com
我已将以下内容添加到站点根目录中的 .htaccess 文件中，
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
并且（正如我所想的那样）重定向所有内容，所以然后我尝试了，
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^http://example(.*)$ https://%{HTTP_HOST}%{REQUEST_URI}
但这似乎也重定向了所有内容？
I'm trying to convince mod-rewrite to redirect http://example.com to https://example.com but not redirect http://subdomain.example.com
I've added the following to the .htaccess file in the sites root,
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
and that (as I thought it would) redirects everything, so then I tried
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^http://example(.*)$ https://%{HTTP_HOST}%{REQUEST_URI}
but that also appears to redirect everything?
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RewriteRule 仅匹配 URL 中主机和之后的部分端口（在 VirtualHost 上下文中）或相对文件系统路径（在 Directory/htaccess 上下文中）；因此尝试在 RewriteRule 中匹配主机名是行不通的。
但是
%{HTTP:Host}将为您提供HostHTTP 标头，以便 RewriteCond 可以与之匹配：缺点是 mod_rewrite 会注意到您有条件重写，具体取决于HTTP 标头，并将添加
Vary: Host标头。如果您不想这样做，可以先将其存储到一个变量中，然后对该变量执行 RewriteCond：RewriteRule only matches on the part of the URL after the host and port (in VirtualHost context) or on the relative filesystem path (in Directory/htaccess context); so trying to match a hostname in a RewriteRule will not work.
However
%{HTTP:Host}will give you theHostHTTP header, so that RewriteCond can match against it:The drawback is that mod_rewrite will notice that you rewrite conditionally depending on an HTTP header, and will add a
Vary: Hostheader. If you don't want that, you may store it to a variable first, and do the RewriteCond on that variable: