Mod rewrite, redirect all to https except specific URI and redirect that URI from https to http

Question

So I've been hitting a wall have have tried many different options, and configurations. I'm trying to redirect my site to https with the exception of one specific URI which I want to be redirected from https to http and then remain http. I would greatly appreciate any help. This is being done from the virtualhost configuration. Below are the settings I have tried in pairs with ssl.conf and mysite.conf. However I keep either getting a redirect loop or a page that doesn't load.

mysite.conf

RewriteEngine on
RewriteCond %{SERVER_PORT} 80
RewriteCond %{REQUEST_URI} !/example
RewriteRule ^(.*)$ https://my.site.com$1 [R,L]

or

RewriteCond %{HTTPS} !=on
RewriteCond %{REQUEST_URI} ^(/|page1|page2)
RewriteRule ^(.*)$ https://my.site.com$1 [R,L]

or

RewriteCond %{HTTPS} !=on
RewriteCond %{REQUEST_URI} !=/example
RewriteRule ^(.*)$ https://my.site.com$1 [R,L]

or

RewriteCond %{REQUEST_URI} =/example
RewriteRule ^(.*)$ http://my.site.com$1 [R,L]

Plus one of the above.

Then in ssl.conf

RewriteEngine on
RewriteCond %{REQUEST_URI} =/example
RewriteRule ^(.*)$ http://my.site.com$1 [R,L]

Answer 1

This should do it for you. Place the most specific rule (that for /example) first.

RewriteEngine on

RewriteCond %{HTTPS} =on
RewriteRule ^/?example$ http://my.site.com/example [R=301,L]

RewriteCond %{HTTPS} !=on
RewriteCond %{REQUEST_URI} !^/?example$
RewriteRule ^/?(.*)$ https://my.site.com/$1 [R=301,L]

This should work in either server (.conf) or directory (.htaccess) context.