我想为一个页面强制HTTP，即preview.php。其余网站可以使用HTTPS。因为preview.php有一个iframe，可以加载来自NON-Secured位置的内容。因此不要在安全的页面上显示。
我在Stack Overflow上尝试了几种解决方案但是没有用。任何建议将不胜感激。我的代码如下：
如果下面的代码有任何错误。请知道。：
我尝试过这里提到的以下解决方案：
Force HTTPS on certain URLs and force HTTP for all others
Force https for some pages and http for all others
How to force rewrite to HTTPS except for a few pages in Apache?
Using .htaccess to control HTTPS on certain pages
<FilesMatch "(?i)^.*\.(ico|flv|jpg|jpeg|png|gif|js|css)$">
ExpiresActive On
ExpiresDefault A432000
</FilesMatch>
Options +FollowSymLinks -MultiViews
# Turn mod_rewrite on
RewriteEngine On
RewriteBase /
SetEnvIfNoCase User-Agent "^libwww-perl*" block_bad_bots
Deny from env=block_bad_bots
# index.php to /
RewriteCond %{THE_REQUEST} ^GET\ /.*/index\.(php|html)\ HTTP
RewriteRule (.*)index\.(php|html)$ /$1 [R=301,L]
# force www.
RewriteCond %{HTTP_HOST} ^www\.domain\.co [NC]
RewriteRule ^(.*)$ http://domain.co/$1 [L,R=301]
RewriteCond %{HTTPS} ^off$
RewriteCond %{REQUEST_URI} !preview\.php$
RewriteRule ^.*$ https://%{HTTP_HOST}%{REQUEST_URI} [R,L]
#RewriteCond %{HTTPS} off
#RewriteCond %{REQUEST_URI} !/preview
#RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,NE,R=301]
# To externally redirect /dir/foo.php to /dir/foo
RewriteCond %{THE_REQUEST} ^[A-Z]{3,}\s([^.]+)\.php [NC]
RewriteRule ^ %1 [R=301,NE,L]
RewriteRule ^profile/(.+)$ profile.php?username=$1 [L,NC,QSA]
RewriteRule ^dashboard/(.+)$ dashboard.php?option=$1 [L,NC,QSA]
RewriteRule ^theme/([a-zA-Z0-9-/]+).html$ theme.php?themename=$1
RewriteRule ^theme/([a-zA-Z0-9-/]+).html/$ theme.php?themename=$1
RewriteRule ^preview/([a-zA-Z0-9-/]+).html$ preview.php?themename=$1
RewriteRule ^preview/([a-zA-Z0-9-/]+).html/$ preview.php?themename=$1
RewriteRule ^category/([0-9]+)$ category.php?page=$1
RewriteRule ^category/([0-9]+)/$ category.php?page=$1
RewriteRule ^category/([a-zA-Z0-9_-]+)$ category.php?cat=$1
RewriteRule ^category/([a-zA-Z0-9_-]+)/$ category.php?cat=$1
RewriteRule ^category/([a-zA-Z0-9_-]+)/([0-9]+)$ category.php?cat=$1&page=$2
RewriteRule ^category/([a-zA-Z0-9_-]+)/([0-9]+)/$ category.php?cat=$1&page=$2
RewriteRule ^category/([a-zA-Z0-9_-]+)/([a-zA-Z0-9_-]+)/([0-9]+)$ category.php?cat=$1&subcat=$2&page=$3
RewriteRule ^category/([a-zA-Z0-9_-]+)/([a-zA-Z0-9_-]+)/([0-9]+)/$ category.php?cat=$1&subcat=$2&page=$3
RewriteRule ^category/([a-zA-Z0-9_-]+)/([a-zA-Z0-9_-]+)$ category.php?cat=$1&subcat=$2
RewriteRule ^category/([a-zA-Z0-9_-]+)/([a-zA-Z0-9_-]+)/$ category.php?cat=$1&subcat=$2
RewriteRule ^header.php page-not-found.php [R=301,L]
RewriteRule ^footer.php page-not-found.php [R=301,L]
# To internally forward /dir/foo to /dir/foo.php
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}.php -f
RewriteRule ^(.+?)/?$ $1.php [L]
<ifModule mod_gzip.c>
mod_gzip_on Yes
mod_gzip_dechunk Yes
mod_gzip_item_include file .(html?|txt|css|js|php|pl)$
mod_gzip_item_include handler ^cgi-script$
mod_gzip_item_include mime ^text/.*
mod_gzip_item_include mime ^application/x-javascript.*
mod_gzip_item_exclude mime ^image/.*
mod_gzip_item_exclude rspheader ^Content-Encoding:.*gzip.*
</ifModule>
<IfModule mod_deflate.c>
# Compress HTML, CSS, JavaScript, Text, XML and fonts
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
AddOutputFilterByType DEFLATE application/x-font
AddOutputFilterByType DEFLATE application/x-font-opentype
AddOutputFilterByType DEFLATE application/x-font-otf
AddOutputFilterByType DEFLATE application/x-font-truetype
AddOutputFilterByType DEFLATE application/x-font-ttf
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE font/opentype
AddOutputFilterByType DEFLATE font/otf
AddOutputFilterByType DEFLATE font/ttf
AddOutputFilterByType DEFLATE image/svg+xml
AddOutputFilterByType DEFLATE image/x-icon
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/javascript
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/xml
# # Remove browser bugs (only needed for really old browsers)
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
Header append Vary User-Agent
</IfModule>
ErrorDocument 404 /page-not-found.php