Apache 页面加载时将https设为默认值

我正在运行一个网站，来自运行在AWSEC2上的Ubuntu16LTS服务器。我在AWS上为我的安全组设置了以下输入规则

Type    Protocol    Port Range    Source
HTTP    TCP            80        0.0.0.0/0
SSH     TCP            22        72.81.131.89/32
HTTPS   TCP            443       0.0.0.0/0 

在我的Ubuntu服务器上，我已经按照描述设置了SSL。我还对/etc/apache2/ports.conf进行了如下编辑

# If you just change the port or add more ports here, you will likely also
# have to change the VirtualHost statement in
# /etc/apache2/sites-enabled/000-default.conf

Listen 80
Listen 8080

<IfModule mod_ssl.c>
    # If you add NameVirtualHost *:443 here, you will also have to change
    # the VirtualHost statement in /etc/apache2/sites-available/default-ssl
    # to <VirtualHost *:443>
    # Server Name Indication for SSL named virtual hosts is currently not
    # supported by MSIE on Windows XP.
    NameVirtualHost *:443
    Listen 443
</IfModule>

<IfModule ssl_module>
    Listen 443
</IfModule>

<IfModule mod_gnutls.c>
        Listen 443
</IfModule>

# vim: syntax=apache ts=4 sw=4 sts=4 sr noet

这一程序没有出错

我进去的时候

sudo a2enmod ssl

我明白了

当我打开浏览器并输入

https://example.com

我的网页以绿色锁打开，表明该网站是安全的。然而，当我刚进去的时候

example.com

我得到一个常规的http连接，并收到一条消息说与该站点的连接不安全

当用户刚进入时，如何将https设置为默认值

example.com

---

当用户访问非SSL站点时，需要强制重定向到SSL站点。 我将添加如下一节：

<VirtualHost *:80>
   ServerName www.example.com
   Redirect / https://www.example.com/
</VirtualHost>

有关更多信息，请参阅

example.com

example.com

<VirtualHost *:80>
   ServerName www.example.com
   Redirect / https://www.example.com/
</VirtualHost>

RewriteEngine On
# This will enable the Rewrite capabilities

RewriteCond %{HTTPS} !=on
# This checks to make sure the connection is not already HTTPS

RewriteRule ^/?(.*) https://%{SERVER_NAME}/$1 [R,L]