区别处理虚拟主机 http 和 https答案

【问题标题】：Difference handling virtualhost http and https区别处理虚拟主机 http 和 https
【发布时间】：2016-07-28 22:04:47
【问题描述】：

我有这个 VirtualHost 文件：

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

<VirtualHost *:443>
    DocumentRoot /var/www/dir
    ServerName www.example.com
    SSLEngine on
    SSLCertificateFile /etc/ssl/certs/example.crt
    SSLCertificateKeyFile /etc/ssl/private/example.key
    <Directory /var/www/dir>
        AllowOverride All
    </Directory>
</VirtualHost>

当我浏览到以下示例链接时，我得到了这个结果：

1. URL http://www.example.com loads fine.
2. URL http://example.com loads incorrect.
3. URL https://www.example.com loads fine.
4. URL https://example.com loads fine.

现在，我知道如何更正项目符号2了。我的问题是：为什么子弹 2 需要像这样一个单独的 VirtualHost，

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

但在 SSL 下它可以正常加载。

【问题讨论】：

标签： http ssl https virtualhost

【解决方案1】：

改变

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

<VirtualHost *:443>
DocumentRoot /var/www/dir
ServerName www.example.com
SSLEngine on
SSLCertificateFile /etc/ssl/certs/example.crt
SSLCertificateKeyFile /etc/ssl/private/example.key
<Directory /var/www/dir>
    AllowOverride All
</Directory>
  </VirtualHost>

到

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

<VirtualHost *:443>
DocumentRoot /var/www/dir
ServerName example.com
ServerAlias www.example.com
SSLEngine on
SSLCertificateFile /etc/ssl/certs/example.crt
SSLCertificateKeyFile /etc/ssl/private/example.key
<Directory /var/www/dir>
    AllowOverride All
</Directory>
 </VirtualHost>

【讨论】：

感谢您的回答，我知道这种技术有效，但是如果我访问链接 hhttps://example.com，为什么“ServerName www.example.com”仍然适用于 ssl 虚拟主机？