.htaccess仅当GET参数存在时才重定向 [英] .htaccess redirect only if GET parameter exists

问题描述

我的一个客户的网站很旧，没有漂亮的 URL。因此，目前看起来像这样：

I have a client with an old website without 'pretty' URLs. So currently it looks like this:

http://www.domain.com/?w=42&a=5&b=3

参数值仅是数字。

现在，他们希望将旧站点移至子域，而主（www）域将成为新站点（具有SEO友好URL的WP）的所在地。

Now they want to move the old site to a subdomain and main (www) domain would be home to a new website (WP with SEO friendly URLs).

现在我想做的是将所有来自 /？w =< num> （并且只有那些）到 sub.domain.com/?w=<num< ，这样，现有链接（大部分来自Google）就会重定向到子域页面，

Now what I would like to do is redirect all requests that come to the /?w=<num> (and ONLY those) to sub.domain.com/?w=<num>, so that existing links (mostly from Google) get redirected to the subdomain page, while the new page works serving new content thorough pretty URLs.

我尝试了以下操作：

# This works, but redirects the entire www.domain.com
# to sub.domain.com no mather what 
RewriteCond %{HTTP_HOST} ^www\.domain\.com$ [NC]
RewriteRule ^(.*)$ http://sub.domain.com/$1 [R=301,L]

# But this DOESN'T work
RewriteRule   ^/?w(.*)  http://sub.domain.com/?w$1  [R=301,L]

# Also tried to redirect 'by hand', but DIDN'T work either
Redirect 301 /?w=42 http://sub.domain.com/?w=42 

我在做什么错？我搜寻了很多东西，但总是得到这样的建议。或者也许我只是在搜索错误的关键字...

What am I doing wrong? I searched high and low but always end up with this kind of suggestions. Or maybe I'm just searching for wrong keywords ...

谢谢！

推荐答案

您无法与重写规则或重定向指令中的查询字符串匹配。您需要与％{QUERY_STRING} 变量匹配。尝试：

You can't match against the query string inside a rewrite rule or a redirect directive. You need to match against the %{QUERY_STRING} variable. Try:

RewriteCond %{QUERY_STRING} (^|&)w=[0-9]+(&|$)
RewriteRule ^(.*)$ http://sub.domain.com/$1 [L,R=301]

请注意，查询字符串会自动附加到规则目标的末尾。

Note that the query string gets automatically appended to the end of the rule's destination.

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