.htaccess无法将URL重写为HTTPS

Question

I have this code in my .htaccess to rewrite my URL from http://123domain.com to https://www.123domain.com but it's not working?

RewriteCond %{HTTPS} !=on
RewriteCond %{HTTP_HOST} !^www\..+$ [NC]
RewriteCond %{HTTP_HOST} (.+)$ [NC]
RewriteRule ^(.*)$ https://www.%1/$1 [R=301,L]

Answer 1

The internet is full of solutions for this. None of all those examples answered your question?

You cannot do both rewritings in a single step in a reliable manner. Instead you need two steps:

RewriteEngine on
RewriteCond %{HTTPS} off
RewriteRule .* https://%{HTTP_HOST}%{REQUEST_URI} [END,R=301]
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule .* https://www.%{HTTP_HOST}%{REQUEST_URI} [END,R=301]

Note: in case you are using a very old http server version you have to replace the END flags with L flags, should work the same in this case.

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And a general hint: you should always prefer to place such rules inside the http servers host configuration instead of using dynamic configuration files (".htaccess"). Those files are notoriously error prone, hard to debug and they really slow down the server. They are only provided as a last option for situations where you do not have control over the host configuration (read: really cheap hosting service providers) or if you have an application that relies on writing its own rewrite rules (which is an obvious security nightmare).