我发现在使用多个vhost时使用ServerAlias更容易(也更有用)。

<VirtualHost x.x.x.x:80>
    ServerName www.example.com
    ServerAlias example.com
    ....
</VirtualHost>

这也适用于https vhosts。

如果你只想加载www的https版本，在apache虚拟主机文件中使用下面的配置。所有这些都可以放在一个文件中。

重定向所有HTTP到www的HTTPS:

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

重定向HTTPS非www到HTTPS www:

<VirtualHost *:443>
    ServerName example.com
    Redirect permanent / https://www.example.com/
</VirtualHost>

实服务器配置

<VirtualHost *:443>
    ServerAdmin hostmaster@example.com
    DocumentRoot "/path/to/your/sites/.htaccess-file-folder"
    SetEnv APPLICATION_ENV "production"

    <Directory "/path/to/your/sites/.htaccess-file-folder">
            Options Indexes FollowSymLinks
            DirectoryIndex index.php index.html
            AllowOverride All
            Order allow,deny
            Allow from all
    </Directory>
    ServerName www.example.com
    
    SSLEngine ON
    SSLCertificateFile "/path/to/your/example.cert.pem"
    SSLCertificateKeyFile "/path/to/your/example.key.pem"

    ErrorLog /path/to/your/example.com-error.log
    CustomLog /path/to/your/example.com-access.log combined
    #Your other configurations if you have
</VirtualHost>

要从你的URL网站中删除www，请在。htaccess文件中使用以下代码:

RewriteEngine On
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^(.*)$ http://%1$1 [R=301,L]

要在你的网站URL中强制使用。htaccess上的这段代码

RewriteEngine On
RewriteBase /
RewriteCond %{HTTP_HOST} ^YourSite.com$
RewriteRule ^(.*)$ http://www.yourSite.com/$1 [R=301]
RewriteCond %{REQUEST_fileNAME} !-d
RewriteCond %{REQUEST_fileNAME} !-f
RewriteRule ^(([^/]+/)*[^./]+)$ /$1.html [R=301,L]

YourSite.com必须替换为您的URL。

RewriteCond %{HTTP_HOST} ^!example.com$ [NC]
RewriteRule ^(.*)$ http://www.example.com/$1 [R=301,L]

This starts with the HTTP_HOST variable, which contains just the domain name portion of the incoming URL (example.com). Assuming the domain name does not contain a www. and matches your domain name exactly, then the RewriteRule comes into play. The pattern ^(.*)$ will match everything in the REQUEST_URI, which is the resource requested in the HTTP request (foo/blah/index.html). It stores this in a back reference, which is then used to rewrite the URL with the new domain name (one that starts with www).

[NC]表示不区分大小写的模式匹配，[R=301]表示使用代码301进行外部重定向(资源永久移动)，[L]停止所有进一步重写，并立即重定向。

我也有同样的问题。 但是用这个解决了

RewriteEngine上 重写HTTP_HOST} ! RewriteRule ^ (. *) http://www.% {HTTP_HOST} / 1美元(R = 301 L)

将non-www重定向到www。

这个规则将www重定向到非www

RewriteEngine上 ^my-domain\.com$ [NC] RewriteRule ^ (. *) http://my-domain.com/ 1美元(R = 301 L)

参考http://dense13.com/blog/2008/02/27/redirecting-non-www-to-www-with-htaccess/

这是我自己网站的配置，工作起来很有魅力。

<IfModule mod_ssl.c>
  <VirtualHost *:443>
    ServerAdmin admin@domain.com

    ServerName www.domain.com
    ServerAlias domain.com

    DocumentRoot /var/www/html/domain

    <Directory /var/www/html/domain/>
      Options FollowSymLinks
      AllowOverride All
      Require all granted
    </Directory>

    # Redirect non-www to www
    RewriteEngine On

    RewriteCond %{HTTP_HOST} !^www\. [NC]
    RewriteRule ^(.*)$ https://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    Include /etc/letsencrypt/options-ssl-apache.conf
    SSLCertificateFile /etc/letsencrypt/live/domain.com/fullchain.pem
    SSLCertificateKeyFile /etc/letsencrypt/live/domain.com/privkey.pem
  </VirtualHost>
</IfModule>