blocks|key|1593982|text|使用重写引擎是解决此问题的一种非常重要的方法。这里有一个更简单的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1593983|<VirtualHost+*:80>
++++ServerName+example.com
++++Redirect+permanent+/+http://www.example.com/
</VirtualHost>

<VirtualHost+*:80>
++++ServerName+www.example.com
++++#+real+server+configuration
</VirtualHost>|code-block|syntax|javascript|1593984|然后，您将拥有另一个包含ServerName+www.example.com的部分，用于您的实际服务器配置。在使用Redirect+directive时，Apache会自动保留/之后的任何内容，这是对此方法不起作用的常见误解(实际上它确实起作用了)。|offset|length|style|CODE|1593985|entityMap|0|LINK|mutability|MUTABLE|url|https://httpd.apache.org/docs/2.4/mod/mod_alias.html#redirect^0|0|0|C|Q|1L|8|2G|1|1L|I|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@$I|X|J|Y|K|L]|$I|Z|J|10|K|L]|$I|11|J|12|K|L]]|9|@$I|13|J|14|1|15]]|A|$]]|$1|M|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

Using the rewrite engine is a pretty heavyweight way to solve this problem. Here is a simpler solution:

<pre><code>&lt;VirtualHost *:80&gt;
 ServerName example.com
 Redirect permanent / http://www.example.com/
&lt;/VirtualHost&gt;

&lt;VirtualHost *:80&gt;
 ServerName www.example.com
 # real server configuration
&lt;/VirtualHost&gt;
</code></pre>

And then you'll have another <a href="https://httpd.apache.org/docs/2.4/vhosts/" rel="noreferrer"><code>&lt;VirtualHost&gt;</code></a> section with <code>ServerName www.example.com</code> for your real server configuration. Apache automatically preserves anything after the <code>/</code> when using the <a href="https://httpd.apache.org/docs/2.4/mod/mod_alias.html#redirect" rel="noreferrer"><code>Redirect</code> directive</a>, which is a common misconception about why this method won't work (when in fact it does).

blocks|key|1808702|text|http://example.com/subdir/?lold=13666+=>+http://www.example.com/subdir/?lold=13666|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1808703|RewriteEngine+On
RewriteCond+%25{HTTP_HOST}+!%5Ewww\.+[NC]
RewriteRule+%5E(.*)$+http://www.%25{HTTP_HOST}%25{REQUEST_URI}+[R=301,L]|code-block|syntax|javascript|1808704|entityMap^0|0|11|15|15|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

<code>http://example.com/subdir/?lold=13666</code> => <code>http://www.example.com/subdir/?lold=13666</code>

<pre><code>RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
</code></pre>

blocks|key|1593991|text|<VirtualHost+*:80>
++++ServerAlias+example.com
++++RedirectMatch+permanent+%5E/(.*)+http://www.example.com/$1
</VirtualHost>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1593992|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>&lt;VirtualHost *:80&gt;
 ServerAlias example.com
 RedirectMatch permanent ^/(.*) http://www.example.com/$1
&lt;/VirtualHost&gt;
</code></pre>

blocks|key|1808672|text|要从URL网站中删除www，请在.htaccess文件中使用以下代码：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1808673|RewriteEngine+On
RewriteCond+%25{HTTP_HOST}+%5Ewww\.(.%2B)$+[NC]
RewriteRule+%5E(.*)$+http://%251$1+[R=301,L]|code-block|syntax|javascript|1808674|1808675|RewriteEngine+On
RewriteBase+/
RewriteCond+%25{HTTP_HOST}+%5EYourSite.com$
RewriteRule+%5E(.*)$+http://www.yourSite.com/$1+[R=301]
RewriteCond+%25{REQUEST_fileNAME}+!-d
RewriteCond+%25{REQUEST_fileNAME}+!-f
RewriteRule+%5E(([%5E/]%2B/)*[%5E./]%2B)$+/$1.html+[R=301,L]|1808676|其中YourSite.com必须替换为您的URL。|1808677|entityMap^0|2|3|A|3|G|9|0|0|0|0|2|C|L|3|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]|$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]|$1|L|3|M|5|H|7|10|8|@]|D|@]|E|$I|J]]|$1|N|3|O|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|P|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|Q|$]]

To remove <code>www</code> from your <code>URL</code> website use this code in your <code>.htaccess</code> file:

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

To force <code>www</code> in your website <code>URL</code> use this code on <code>.htaccess</code>

<pre><code>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]
</code></pre>

Where <code>YourSite.com</code> must be replaced with your <code>URL</code>.

blocks|key|1808746|text|++++<VirtualHost+*:80>
+++++++DocumentRoot+"what/ever/root/to/source"
+++++++ServerName+www.example.com

+++++++<Directory+"what/ever/root/to/source">
+++++++++Options+FollowSymLinks+MultiViews+Includes+ExecCGI
+++++++++AllowOverride+All
+++++++++Order+allow,deny
+++++++++allow+from+all
+++++++++<What+Ever+Rules+You+Need.>
++++++</Directory>

++++</VirtualHost>

++++<VirtualHost+*:80>
++++++ServerName+example.com
++++++ServerAlias+*.example.com
++++++Redirect+permanent+/+http://www.example.com/
++++</VirtualHost>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1808747|这就是上面的代码发生的事情。第一个虚拟主机块检查请求是否为www.example.com，并在该目录中运行您的网站。|unstyled|1808748|如果失败，则转到第二虚拟主机部分。在这里，除www.example.com之外的任何内容都被重定向到www.example.com。|1808749|这里的顺序很重要。如果您首先添加第二个virtualhost指令，它将导致重定向循环。|1808750|此解决方案会将任何请求重定向到您的域或www.yourdomain.com。|1808751|干杯!|1808752|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|F|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|F|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|F|7|W|8|@]|9|@]|A|$]]]|P|$]]

<pre><code> &lt;VirtualHost *:80&gt;
 DocumentRoot "what/ever/root/to/source"
 ServerName www.example.com

 &lt;Directory "what/ever/root/to/source"&gt;
 Options FollowSymLinks MultiViews Includes ExecCGI
 AllowOverride All
 Order allow,deny
 allow from all
 &lt;What Ever Rules You Need.&gt;
 &lt;/Directory&gt;

 &lt;/VirtualHost&gt;

 &lt;VirtualHost *:80&gt;
 ServerName example.com
 ServerAlias *.example.com
 Redirect permanent / http://www.example.com/
 &lt;/VirtualHost&gt;
</code></pre>

This is what happens with the code above. The first virtual host block checks if the request is www.example.com and runs your website in that directory.

Failing which, it comes to the second virtual host section. Here anything other than www.example.com is redirected to www.example.com.

The order here matters. If you add the second virtualhost directive first, it will cause a redirect loop.

This solution will redirect any request to your domain, to www.yourdomain.com.

Cheers!

blocks|key|1808582|text|RewriteCond+%25{HTTP_HOST}+%5E!example.com$+[NC]
RewriteRule+%5E(.*)$+http://www.example.com/$1+[R=301,L]|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1808583|这从HTTP_HOST变量开始，它只包含传入URL+(example.com)的域名部分。假设域名不包含www.，并且与您的域名完全匹配，则RewriteRule开始起作用。模式%5E(.*)$将匹配REQUEST_URI中的所有内容，这是在HTTP+request+(foo/blah/index.html)中请求的资源。它将其存储在反向引用中，然后使用该引用用新域名(以www开头的域名)重写URL。|unstyled|offset|length|style|CODE|1808584|[NC]表示不区分大小写的模式匹配，[R=301]表示使用代码301的外部重定向(资源永久移动)，[L]停止所有进一步的重写，并立即重定向。|1808585|entityMap^0|0|2|9|R|B|1G|4|2H|6|2Q|B|3P|J|55|3|0|0|4|I|7|1D|3|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|P|8|@$G|Q|H|R|I|J]|$G|S|H|T|I|J]|$G|U|H|V|I|J]|$G|W|H|X|I|J]|$G|Y|H|Z|I|J]|$G|10|H|11|I|J]|$G|12|H|13|I|J]]|9|@]|A|$]]|$1|K|3|L|5|F|7|14|8|@$G|15|H|16|I|J]|$G|17|H|18|I|J]|$G|19|H|1A|I|J]]|9|@]|A|$]]|$1|M|3|-4|5|F|7|1B|8|@]|9|@]|A|$]]]|N|$]]

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

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

<code>[NC]</code> indicates case-insensitive pattern matching, <code>[R=301]</code> indicates an external redirect using code 301 (resource moved permanently), and <code>[L]</code> stops all further rewriting, and redirects immediately.

blocks|key|1808993|text|如果您使用的是Apache2.4，则无需启用重写Apache模块，您可以使用如下内容：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1808994|#+non-www+to+www
<If+"%25{HTTP_HOST}+=+'domain.com'">
++Redirect+301+"/"+"http://www.domain.com/"
</If>|code-block|syntax|javascript|1808995|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If you are using Apache 2.4 ,without the need to enable the rewrite apache module you can use something like this:

<pre><code># non-www to www
&lt;If "%{HTTP_HOST} = 'domain.com'"&gt;
 Redirect 301 "/" "http://www.domain.com/"
&lt;/If&gt;
</code></pre>

blocks|key|1808696|text|我运行了这个..。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1808697|+RewriteEngine+on
+RewriteCond+%25{HTTP_HOST}+!%5Ewww.*$+[NC]
+RewriteRule+%5E/.%2Bwww\/(.*)$+http://www.%25{HTTP_HOST}/$1+[R=301,L]|code-block|syntax|javascript|1808698|我需要它对我们新服务器上的25%2B域是通用的，所以这个指令在我的virtual.conf文件中的一个标记中。(dir是所有文档根目录的父目录)|1808699|我不得不在重写规则上做了一些修改，因为完整的文档根在模式匹配中被执行，尽管http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html说它只是主机和端口之后的东西。|offset|length|1808700|entityMap|0|LINK|mutability|MUTABLE|url|http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html^0|0|0|0|11|1H|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

I ran this...

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

I need this to be universal for 25+ domains on our new server, so this directive is in my virtual.conf file in a &lt;Directory> tag. (dir is parent to all docroots)

I had to do a bit of a hack on the rewrite rule though, as the full docroot was being carried through on the pattern match, despite what <a href="http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html" rel="noreferrer">http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html</a> says about it only being stuff after the host and port.

blocks|key|1594596|text|这很简单！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1594597|RewriteEngine+On
RewriteCond+%25{HTTP_HOST}+!%5Ewww\.+[NC]
RewriteRule+%5E(.*)$+http://www.%25{HTTP_HOST}%25{REQUEST_URI}+[R=301,L]|code-block|syntax|javascript|1594598|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is simple!

<pre><code>RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
</code></pre>

blocks|key|1593987|text|试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1593988|RewriteEngine+on
RewriteCond+%25{HTTP_HOST}+%5Eexample.com$+[NC]
RewriteRule+%5E(.*)+http://www.example.com$1+[R=301]|code-block|syntax|javascript|1593989|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this: 

<pre><code>RewriteEngine on
RewriteCond %{HTTP_HOST} ^example.com$ [NC]
RewriteRule ^(.*) http://www.example.com$1 [R=301]
</code></pre>

blocks|key|1809025|text|RewriteEngine+On+RewriteCond+%25{HTTP_HOST}+%5Eyourdomain.com+[NC]+RewriteRule+%5E(.*)$+http://www.yourdomain.com/$1+[L,R=301]|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1809026|查看这个完美的作品|1809027|entityMap^0|0|3C|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

<code>RewriteEngine On
RewriteCond %{HTTP_HOST} ^yourdomain.com [NC]
RewriteRule ^(.*)$ http://www.yourdomain.com/$1 [L,R=301]</code>

check this perfect work

blocks|key|1809286|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1809287|1809288|1809289|这将避免双重重定向(http://non+www到http://www，然后到https://www)|offset|length|1809290|<VirtualHost+*:80>
RewriteEngine+On
RewriteCond+%25{HTTP_HOST}+%5E(?:www\.)?(.%2B)$+[NC]
RewriteRule+%5E(.*)$+https://www.%251$1+[R=301,L]
</VirtualHost>|code-block|syntax|javascript|1809291|和|1809292|<VirtualHost+*:443>
RewriteEngine+On
RewriteCond+%25{HTTP_HOST}+!%5Ewww\.+[NC]
RewriteRule+%5E(.*)$+https://www.%25{HTTP_HOST}$1+[R=301,L]
</VirtualHost>|1809293|您应该将重定向代码301更改为最方便的代码|1809294|entityMap|0|LINK|mutability|MUTABLE|url|http://non/|1|http://www/|2|https://www/^0|0|0|0|A|A|0|P|A|1|13|B|2|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|13|7|@]|8|@]|9|$]]|$1|A|3|-4|4|5|6|14|7|@]|8|@]|9|$]]|$1|B|3|-4|4|5|6|15|7|@]|8|@]|9|$]]|$1|C|3|D|4|5|6|16|7|@]|8|@$E|17|F|18|1|19]|$E|1A|F|1B|1|1C]|$E|1D|F|1E|1|1F]]|9|$]]|$1|G|3|H|4|I|6|1G|7|@]|8|@]|9|$J|K]]|$1|L|3|M|4|5|6|1H|7|@]|8|@]|9|$]]|$1|N|3|O|4|I|6|1I|7|@]|8|@]|9|$J|K]]|$1|P|3|Q|4|5|6|1J|7|@]|8|@]|9|$]]|$1|R|3|-4|4|5|6|1K|7|@]|8|@]|9|$]]]|S|$T|$4|U|V|W|9|$X|Y]]|Z|$4|U|V|W|9|$X|10]]|11|$4|U|V|W|9|$X|12]]]]

-If you host multiple domain names (Optional)
-If all those domain names are using https (as they should)
-if you want all those domain names to use www dot domainName
This will avoid doble redirection (http://non www to http://www and then to https://www)
<pre><code>&lt;VirtualHost *:80&gt;
RewriteEngine On
RewriteCond %{HTTP_HOST} ^(?:www\.)?(.+)$ [NC]
RewriteRule ^(.*)$ https://www.%1$1 [R=301,L]
&lt;/VirtualHost&gt;
</code></pre>
And
<pre><code>&lt;VirtualHost *:443&gt;
RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^(.*)$ https://www.%{HTTP_HOST}$1 [R=301,L]
&lt;/VirtualHost&gt;
</code></pre>
You should change the redirection code 301 to the most convenient one

blocks|key|1594929|text|要301将所有直接向域发出的请求重定向到www，您可以使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1594930|RewriteEngine+On

RewriteCond+%25{HTTP_HOST}+!%5E([%5E.]%2B\.[%5E.]%2B){2,}$+[NC]
RewriteRule+%5E(.*)$+http://www.%25{HTTP_HOST}%25{REQUEST_URI}+[R=301,L]|code-block|syntax|javascript|1594931|这样做的好处是，这将工作，如果你有任何有效的子域，例如|1594932|example.com重定向至www.example.com|offset|length|1594933|foo.example.com无重定向|1594934|bar.example.com无重定向|1594935|entityMap|0|LINK|mutability|MUTABLE|url|http://www.example.com/^0|0|0|0|F|F|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|11|8|@]|9|@$K|12|L|13|1|14]]|A|$]]|$1|M|3|N|5|6|7|15|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|16|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

To 301 redirect all requests made directly to the domain to www you can use:
<pre><code>RewriteEngine On

RewriteCond %{HTTP_HOST} !^([^.]+\.[^.]+){2,}$ [NC]
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
</code></pre>
The benefit of this is that this will work if you have any valid subdomains, e.g.
example.com REDIRECTED TO <a href="http://www.example.com" rel="nofollow noreferrer">www.example.com</a>
foo.example.com NO REDIRECT
bar.example.com NO REDIRECT

blocks|key|1808754|text|我使用的代码是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1808755|RewriteEngine+On
RewriteBase+/
RewriteCond+%25{HTTP_HOST}+%5Ewww\.(.*)$+[NC]
RewriteRule+%5E(.*)$+http://%251/$1+[R=301,L]|code-block|syntax|javascript|1808756|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The code I use is:

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

blocks|key|1594307|text|我也有同样的问题。但是用这个解决了|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1594308|RewriteEngine+On+RewriteCond+%25{HTTP_HOST}+!%5Ewww\.+RewriteRule+%5E(.*)$+http://www.%25{HTTP_HOST}/$1+[R=301,L]|offset|length|style|CODE|1594309|此规则将非www重定向到www。|1594310|以及将www重定向到非www的规则|1594311|RewriteEngine+On+RewriteCond+%25{HTTP_HOST}+!%5Emy-domain\.com$+[NC]+RewriteRule+%5E(.*)$+http://my-domain.com/$1+[R=301,L]|1594312|引用自http://dense13.com/blog/2008/02/27/redirecting-non-www-to-www-with-htaccess/|1594313|entityMap|0|LINK|mutability|MUTABLE|url|http://dense13.com/blog/2008/02/27/redirecting-non-www-to-www-with-htaccess/^0|0|0|2X|0|0|0|0|39|0|3|24|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Y|8|@$D|Z|E|10|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|11|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|12|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|13|8|@$D|14|E|15|F|G]]|9|@]|A|$]]|$1|N|3|O|5|6|7|16|8|@]|9|@$D|17|E|18|1|19]]|A|$]]|$1|P|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|W]]]]

I've just have a same problem. 
But solved with this

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

This rule redirecting non-www to www.

And this rule to redirecting www to non-www

<code>RewriteEngine On
RewriteCond %{HTTP_HOST} !^my-domain\.com$ [NC]
RewriteRule ^(.*)$ http://my-domain.com/$1 [R=301,L]</code>

Refer from <a href="http://dense13.com/blog/2008/02/27/redirecting-non-www-to-www-with-htaccess/" rel="nofollow">http://dense13.com/blog/2008/02/27/redirecting-non-www-to-www-with-htaccess/</a>

blocks|key|1809082|text|这对我来说很有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1809083|RewriteCond+%25{HTTP_HOST}+%5E(?!www.domain.com).*$+[NC]
RewriteRule+%5E(.*)$++http://www.domain.com$1++[R=301,L]|code-block|syntax|javascript|1809084|在将所有域重定向到Apache子域时，我使用了先行模式(?!www.domain.com)来排除www子域，以避免在www中出现无限重定向循环。|offset|length|style|CODE|1809085|entityMap^0|0|0|R|I|1C|3|1M|3|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]|$I|T|J|U|K|L]|$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|N|$]]

This works for me:

<pre><code>RewriteCond %{HTTP_HOST} ^(?!www.domain.com).*$ [NC]
RewriteRule ^(.*)$ http://www.domain.com$1 [R=301,L]
</code></pre>

I use the look-ahead pattern <code>(?!www.domain.com)</code> to exclude the <code>www</code> subdomain when redirecting all domains to the <code>www</code> subdomain in order to avoid an infinite redirect loop in Apache.

blocks|key|1594994|text|如果您只想加载www的https版本，请使用apache虚拟主机文件中的以下配置。所有这些都可以放在一个文件中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1594995|将所有http重定向到www的https：|1594996|<VirtualHost+*:80>
++++ServerName+example.com
++++ServerAlias+www.example.com
++++Redirect+permanent+/+https://www.example.com/
</VirtualHost>|code-block|syntax|javascript|1594997|将https非www重定向到https+www：|1594998|<VirtualHost+*:443>
++++ServerName+example.com
++++Redirect+permanent+/+https://www.example.com/
</VirtualHost>|1594999|实时服务器配置|1595000|<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>|1595001|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

If you want to load only the https version of www, use the below configurations in apache virtual host file. all these can have in a single file.
redirecting all http to https of www:
<pre><code>&lt;VirtualHost *:80&gt;
 ServerName example.com
 ServerAlias www.example.com
 Redirect permanent / https://www.example.com/
&lt;/VirtualHost&gt;
</code></pre>
redirecting https non-www to https www:
<pre><code>&lt;VirtualHost *:443&gt;
 ServerName example.com
 Redirect permanent / https://www.example.com/
&lt;/VirtualHost&gt;
</code></pre>
real server configuration
<pre><code>&lt;VirtualHost *:443&gt;
 ServerAdmin hostmaster@example.com
 DocumentRoot &quot;/path/to/your/sites/.htaccess-file-folder&quot;
 SetEnv APPLICATION_ENV &quot;production&quot;

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

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

blocks|key|1595132|text|这是我自己网站的配置，工作起来很棒。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1595133|<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+%25{HTTP_HOST}+!%5Ewww\.+[NC]
++++RewriteRule+%5E(.*)$+https://www.%25{HTTP_HOST}%25{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>|code-block|syntax|javascript|1595134|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is my own site's configuration, and works like a charm.
<pre><code>&lt;IfModule mod_ssl.c&gt;
 &lt;VirtualHost *:443&gt;
 ServerAdmin admin@domain.com

 ServerName www.domain.com
 ServerAlias domain.com

 DocumentRoot /var/www/html/domain

 &lt;Directory /var/www/html/domain/&gt;
 Options FollowSymLinks
 AllowOverride All
 Require all granted
 &lt;/Directory&gt;

 # 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
 &lt;/VirtualHost&gt;
&lt;/IfModule&gt;
</code></pre>

blocks|key|1808929|text|我在WP+Multisite上有一个类似的任务，重定向规则必须是通用的(对于我添加到网络中的任何给定域)。我首先解决了将通配符添加到域(停留域)的问题。请注意。在.com之后。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1808930|CNAME+*+domain.com.|code-block|syntax|javascript|1808931|然后，我将以下代码行添加到multisite的根目录下的.htaccess文件中。我猜它适用于任何网站。|1808932|RewriteEngine+On
RewriteBase+/
RewriteCond+%25{HTTP_HOST}+%5Ewww\.(.*)$+[NC]
RewriteRule+%5E(.*)$+http://%251/$1+[R=301,L]|1808933|希望这能有所帮助。|1808934|ps。如果您想从not+www重定向到www，请将最后一行更改为|1808935|RewriteRule+%5E(.*)$+http://www.%251/$1+[R=301,L]|1808936|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

I had a similar task on a WP Multisite, where the redirection rule had to be generic (for any given domain I'd add to the network). I solved first adding a wildcard to the domain (parked domain). Note the . after .com.

<pre><code>CNAME * domain.com.
</code></pre>

And then I added the following lines to the .htaccess file at the root of my multisite. I guess it'd work for any site.

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

Hopefully this will help.

ps. If you'd like to redirect from not www to www, change the last line into

<pre><code>RewriteRule ^(.*)$ http://www.%1/$1 [R=301,L]
</code></pre>

blocks|key|1594360|text|我发现在使用多个vhost时，使用ServerAlias更容易(也更有用)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1594361|<VirtualHost+x.x.x.x:80>
++++ServerName+www.example.com
++++ServerAlias+example.com
++++....
</VirtualHost>|code-block|syntax|javascript|1594362|这也适用于https+vhosts。|1594363|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I found it easier (and more usefull) to use ServerAlias when using multiple vhosts.

<pre><code>&lt;VirtualHost x.x.x.x:80&gt;
 ServerName www.example.com
 ServerAlias example.com
 ....
&lt;/VirtualHost&gt;
</code></pre>

This also works with https vhosts.

I have a website that doesn't seem to redirect from non-www to www.

My Apache configuration is as follows:

<pre><code>RewriteEngine On
### re-direct to www
RewriteCond %{http_host} !^www.example.com [nc]
RewriteRule ^(.*)$ http://www.example.com/$1 [r=301,nc] 
</code></pre>

What am I missing?

apache redirect from non www to www

虚拟主机

服务器

我有一个网站，似乎不会从非www重定向到www。我的Apache配置如下：RewriteEngine On### re-direct to wwwRewriteCond %{http_host} !^www.example.com [nc]RewriteRule ^(.*)$ http://www.example.com/$1 [r=301,nc] 我遗漏了什么？

问apache从非www重定向到www
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