如何强制我的网站在整个网站中使用https：//？我的网站是使用CodeignITer,MySQL和& amp;在CentOS上的apache,任何人都可以请赐教.

编辑：

我正在使用CodeIgniter,它有.htaccess.正如我在下面的评论中提到的,我想做相反的事情(在网站的某些部分强制使用https)：

我系统上的.htaccess：

Options -indexes
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /

    #Removes access to the system folder by users.
    #Additionally this will allow you to create a System.PHP controller,#prevIoUsly this would not have been possible.
    #'system' can be replaced if you have renamed your system folder.
    RewriteCond %{REQUEST_URI} ^system.*
    rewriterule ^(.*)$/index.PHP?/$1 [L]

    #When your application folder isn't in the system folder
    #This snipPEt PRevents user access to the application folder
    #Submitted by: Fabdrol
    #Rename 'application' to your applications folder name.
    RewriteCond %{REQUEST_URI} ^application.*
    RewriteRule ^(.*)$/index.PHP?/$1 [L]

    #Checks to see if the user is attempting to access a valid file,#such as an image or css document,if this isn't true it sends the
    #request to index.PHP
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^(.*)$index.PHP?/$1 [L]
</IfModule>

<IfModule !mod_rewrite.c>
    # If we don't have mod_rewrite installed,all 404's
    # can be sent to index.PHP,and everything works as normal.
    # Submitted by: ElliotHaughin

    ErrorDocument 404 /index.PHP
</IfModule>

如果我添加@Dale建议的内容：

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteCond ^(LOGin|register|userportal)
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

我得到回应500.有什么想法吗？

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

RewriteCond %{HTTP_HOST} ^www\.(.+)
RewriteCond %{HTTPS}s/%1 ^(on(s)|offs)/(.+)
RewriteRule ^ http%2://%3%{REQUEST_URI} [L,R=301]

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

RewriteCond %{HTTP_HOST} ^www\.(.+)
RewriteCond %{HTTPS}s/%1 ^(on(s)|offs)/(.+)
RewriteRule ^ http%2://%3%{REQUEST_URI} [L,R=301]

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteCond ^(login|register|userportal)
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

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