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我不擅长编写 modrewrite 访问规则，并希望实现以下场景：

virtual url /en/shop.php redirects to /shop.php?lang=en

已经知道了，但实际问题在 modrewrite 环境中：

if url is '/' (empty)     --> redirect to /en/  (/index.php?lang=en)
if url is '/en' or '/de'  --> redirect to /en/ or /de/ (add slash)
if an uri is "defined" like /en/shop.php -> redirect to /shop.php?lang=en

我尝试了几条规则，但最后一条导致无限循环，我无法弄清楚出了什么问题..：/请帮助

这是我的 .htaccess 文件：

RewriteEngine On
RewriteBase /   

# empty url -> redirect to en/
RewriteRule ^$ en/ [R=301,L]

# url is ONLY '/en' or '/de' -> redirect to /en/ or /de/ (adding slash)
RewriteRule ^(en|de)$  $1/ [R=301,L]

# now all urls have en/ de/ -> parse them
RewriteRule ^(en|de)/(.*)$  $2?lang=$1&%{query_STRING} [R=301,L]
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1 回答 1

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This is the line that is causing the redirect loop:

RewriteRule ^(en|de)/(.*)$  $2?lang=$1&%{query_STRING} [R=301,L]

Because it is redirecting the browser to /?lang=en (for example). Then the first rule:

RewriteRule ^$ en/ [R=301,L]

Redirects it to /en/?lang=en, then the last rule redirects it to /?lang=en, then the first rule, etc.

You probably meant the last rule to be internal, additionally, your first rule needs to check if there's already a query string parameter, "lang":

RewriteEngine On
RewriteBase /   

# empty url -> redirect to en/
RewriteCond %{QUERY_STRING} !lang=(en|de)
RewriteRule ^$ en/ [R=301,L]

# url is ONLY '/en' or '/de' -> redirect to /en/ or /de/ (adding slash)
RewriteRule ^(en|de)$  $1/ [R=301,L]

# now all urls have en/ de/ -> parse them
RewriteRule ^(en|de)/(.*)$  $2?lang=$1&%{query_STRING} [L]
# no "R=301" here --------------------------------------^
于 2013-07-04T16:59:18.373 回答