这对我来说很管用:

<IfModule mod_rewrite.c>
 RewriteEngine On
  RewriteCond %{HTTPS} !on
  RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
</IfModule>

例如，http://server/foo?email=someone%40example.com可以正常重定向，没有任何问题。 文件.htaccess位于网站根文件夹(例如名为public_html)。 它是可以使用的 重写%{SERVER_PORT} !^443$ instead of重写%{HTTPS} !on

如果你正在使用Apache, mod_rewrite是最简单的解决方案，网上有很多关于如何做到这一点的文档。例如:http://www.askapache.com/htaccess/http-https-rewriterule-redirect.html

更新:尽管这个答案在几年前就已经被接受了，但请注意，Apache文档现在不建议使用这种方法。改用重定向。请看这个答案。

RewriteEngine On
RewriteCond %{HTTPS} !on
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

Not only can you do this in your .htaccess file, you should be doing this period. You will also want to follow the steps here to get your site listed on the HSTS preload list after you implement this redirect so that any requests to the insecure http version of your website never make it past the user agent. Instead, the user agent checks the requested URI against a baked in list of https only websites and, if the requested URI is on that list, changes the protocol from http to https before transmitting the request to the server. Therefore, the insecure request never makes it out into the wild and never hits the server. Eventually when the internet changes over to https only the HSTS preload list will not be needed. Until then, every site should be using it.

为了执行重定向，我们需要启用重写引擎，然后将所有流量从http端口80重定向到https。

RewriteEngine On
RewriteCond %{SERVER_PORT} 80
RewriteRule ^(.*)$ https://yourwebsite.tld/$1 [L,R=301]

经过多次尝试，考虑没有www和有www，这是可行的

RewriteEngine on
RewriteCond %{HTTPS} off
RewriteCond %{HTTP_HOST} (www\.)?yourdomain.com
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

这对我来说很管用:

<IfModule mod_rewrite.c>
 RewriteEngine On
  RewriteCond %{HTTPS} !on
  RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
</IfModule>

例如，http://server/foo?email=someone%40example.com可以正常重定向，没有任何问题。 文件.htaccess位于网站根文件夹(例如名为public_html)。 它是可以使用的 重写%{SERVER_PORT} !^443$ instead of重写%{HTTPS} !on