问题检测空REQUEST_URI与Apache的mod_rewrite [英] Problem detecting empty REQUEST_URI with Apache mod_rewrite

问题描述

我运行的Apache重定向难熬这样的规则：

I am running Apache witha redirect rule like this:

RewriteCond %{HTTP_HOST} ^1st-domain\.com
RewriteRule ^(.*)$ http://2nd-domain.com$1 [R=permanent,L]

这成功重定向 http://1st-domain.com 来的 http://2nd-domain.com
然而，当REQUEST_URI是空的，我想重定向到第三个域。

This successfully redirects http://1st-domain.com to http://2nd-domain.com However, when the REQUEST_URI is empty, I want to redirect to a third domain.

RewriteCond %{HTTP_HOST} ^1st-domain\.com$
RewriteCond %{QUERY_STRING} ^$
RewriteRule ^(.*)$ http://3rd-domain.com$1 [R=permanent,L]

但是，这并不工作，而不是重定向到2nd-domain.com

But this does not work and instead redirects to 2nd-domain.com

我的规则是有顺序是这样的：

My rules are ordered like this:

RewriteCond %{HTTP_HOST} ^1st-domain\.com$
RewriteCond %{QUERY_STRING} ^$
RewriteRule ^(.*)$ http://3rd-domain.com$1 [R=permanent,L]

RewriteCond %{HTTP_HOST} ^1st-domain\.com
RewriteRule ^(.*)$ http://2nd-domain.com$1 [R=permanent,L]

有什么建议？谢谢你在前进。

Any suggestions? Thank you in advance.

更新

1. 空REQUEST_URI：HTTP：/1st-domain.com


2. 非空REQUEST_URI： http://1st-domain.com/something

1. Empty REQUEST_URI: http:/1st-domain.com
2. Non-empty REQUEST_URI: http://1st-domain.com/something

第一条规则应该直接空REQUEST_URI到3rd-domain.com，第二条规则应该引导非空REQUEST_URI到2nd-domain.com

The first rule should direct an empty request_uri to 3rd-domain.com, the second rule should direct the non-empty request_uri to 2nd-domain.com

有用的珍闻
您可以在mod_rewrite的调试打开这个片段：

USEFUL TIDBIT You can turn on mod_rewrite debug with this snippet:

<IfModule mod_rewrite.c>
RewriteLog "/home/domain.com/logs/rewrite.log"
RewriteLogLevel 3
</IfModule>

我还不知道非常有用的调试选项。

Very useful debug option I hadn't known.

推荐答案

这应该工作：

RewriteCond %{HTTP_HOST} ^1st-domain\.com
RewriteRule ^$ http://3rd-domain.com [R=permanent,L]

RewriteCond %{HTTP_HOST} ^1st-domain\.com
RewriteRule ^(.+)$ http://2nd-domain.com/$1 [R=permanent,L]

希望它帮助！

请注意：REQUEST_URI之间的httpd.conf和的.htaccess略有不同，它在httpd.conf一个额外的反斜杠开始。这意味着，在httpd.conf中的第一个重写规则应该是 ^ \\ / $ ，而不仅仅是 ^ $ 。

Note: REQUEST_URI is slightly different between httpd.conf and .htaccess, it starts with an extra backslash in httpd.conf. This means that in httpd.conf the first rewrite rule should be ^\/$, not just ^$.

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