背景说明：服务器是centOS7.4 七牛申请的免费ssl证书

apache目录 /usr/local/apache/

vim conf/httpd.conf

再 Listen 80下面添加一行

找到 #LoadModule ssl_module modules/mod_ssl.so 和 #Include conf/extra/httpd-ssl.conf，去掉前面的#号注释；

先将要修改的文件备份是个好习惯。

编辑Apache根目录下 conf/extra/httpd-ssl.conf 文件，修改如下内容：

<VirtualHost 0.0.0.0:443>

    DocumentRoot "/data/www/default"

    ServerName ding.com

    ServerAlias www.ding.com

    <Directory /data/www/default>

            #AllowOverride伪静态

            AllowOverride All

            Require all granted

        </Directory>

    SSLEngine on

    SSLCertificateFile /usr/local/apache/conf/ssl/www.ding.com.cer

    SSLCertificateKeyFile /usr/local/apache/conf/ssl/www.ding.com.key

    SSLCertificateChainFile /usr/local/apache/conf/ssl/www.ding.com_ca.crt

</VirtualHost>

配置完成后，重新启动 Apache 就可以使用https://www.domain.com来访问了。

若是腾讯云的免费ssl证书是，对应修改如下内容：

SSLCertificateFile /usr/local/apache/conf/2_www.domain.com_cert.crt

SSLCertificateKeyFile /usr/local/apache/conf/3_www.domain.com.key

SSLCertificateChainFile /usr/local/apache/conf/1_root_bundle.crt

如果要强制网站使用HTTPS，httpd-vhost.conf文件配置如下：

<VirtualHost *:80>

ServerName localhost

ServerAlias localhost

DocumentRoot /data/www/default

<Directory /data/www/default>

    SetOutputFilter DEFLATE

    Options FollowSymLinks

    AllowOverride All

    Order Deny,Allow

    Require all granted

    DirectoryIndex index.php index.html index.htm

</Directory>

#强制http转向为https

RewriteEngine on

RewriteCond   %{HTTPS} !=on

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

</VirtualHost>