Apache的伪静态规则.htaccess实现301跳转的方法
首先，我们看以下.htaccess文件的伪静态规则，用于实现访问不带www的域名自动跳转到www域名。
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
Order Deny,Allow
Deny from 47.114.182.24
RewriteCond %{HTTP_HOST} ^toyean.com [NC]
RewriteRule ^(.*)$ https://www.toyean.com/$1 [L,R=301]
RewriteCond %{SERVER_PORT} !^443$
RewriteRule ^.*$ https://%{SERVER_NAME}%{REQUEST_URI} [L,R=301]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>其中的“Order Deny,Allow Order from IP地址”这两行规则会禁止指定的IP访问网站，被设置的IP访问网站会显示：
Forbidden
You don't have permission to access / on this server.
若想要禁止多个IP，增加几行“Deny from IP地址”;
不需要禁止某个IP，手动去掉“Order Deny,Allow Order from IP地址”这两行即可。
番外篇总结：
不带www的域名自动跳转到www域名：
RewriteEngine On
RewriteCond %{HTTP_HOST} ^toyean.com [NC]
RewriteRule ^(.*)$ https://www.toyean.com/$1 [L,R=301]带www的域名自动跳转到不带www域名：
RewriteEngine On
RewriteCond %{HTTP_HOST} ^www.toyean.com [NC]
RewriteRule ^(.*)$ https://toyean.com/$1 [L,R=301]自动跳转到其他域名：
RewriteEngine On
RewriteCond %{HTTP_HOST} ^www.toyean.com [NC]
RewriteRule ^(.*)$ https://www.wulongmao.com/$1 [L,R=301] 
