Redirect / Remap in Apache with possibility to get POST data

Question

I'm trying to redirect my https address to http localhost. I'm getting response with SAMLart on page https://site.local/callback and want to change it to http://localhost:8080/web/login. To achive it I wrote something like this in system hosts file:

127.0.0.1 site.local

Then in Apache httpd.conf file I wrote:

<VirtualHost *:443>
RewriteEngine On
RewriteCond %{HTTP_HOST} ^localhost$ [NC]
RewriteCond %{HTTPS} on
RewriteRule ^(.*)$ http://%{HTTP_HOST}/$1 [L,R]
</VirtualHost>

<VirtualHost *:80>
ServerName localhost
RedirectMatch permanent ^ http://localhost:8080/web/login
</VirtualHost>

<VirtualHost *:443>
ServerName https://site.local
RedirectMatch permanent ^ https://localhost
</VirtualHost>

I'm getting good redirect and I see page that i want to see, but in dev tolls I see that SAMLart is on https://site.local request URL when I'm actually on http://localhost:8080/web/login and I can't get this parameter from HttpServletRequest (I'm using Java).

Is there any option to get it from another request URL or to change it in Apache?