htaccess语言检测在无休止的重定向中返回-谁发现了错误

Question

我有一个有3种语言的调查社区，使用Wordpress的WPML插件来处理这些语言。不幸的是，语言检测只能通过php进行。我想使用htaccess，因为它更快，用户不会注意到延迟。

设置如下：

community.netigate.net/ (English, International)
community.netigate.net/de/ (German)
community.netigate.net/sv/ (Swedish)

我尝试了不同的方法，发现最好的方法是

http://tech-blog.borychowski.com/index.php/2009/03/htaccess/redirect-according-to-browser-language-mod-rewrite-and-http_accept_language/

由于大多数用户是德国人或瑞典人，我希望"英语"只是标准的后备语言。设置可以是这样的：

检查语言是否为瑞典语，然后重定向到瑞典语子页面
检查语言是否为德语，然后重定向到德语子页面
ELSE使用英语作为后备

不幸的是，下面的解决方案最终会导致无休止的重定向？我错过什么了吗

## Language Detection
#The 'Accept-Language' header starts with 'sv'
#and the test is case-insensitive ([NC])
RewriteCond %{HTTP:Accept-Language} ^sv [NC]
#Redirect user to /sv/hauptseite address
#sending 301 (Moved Permanently) HTTP status code
RewriteRule ^$ /sv/ [L,R=301]
#The 'Accept-Language' header starts with 'de'
#and the test is case-insensitive ([NC])
RewriteCond %{HTTP:Accept-Language} ^de [NC]
#Redirect user to /de/hauptseite address
#sending 301 (Moved Permanently) HTTP status code
RewriteRule ^$ /de/ [L,R=301]
#For every other language (including English :)) use English
RewriteRule ^$ / [L,R=301]

Answer 1

添加另一个重写条件，检查重定向是否已经发生

## Language Detection
#The 'Accept-Language' header starts with 'sv'
#and the test is case-insensitive ([NC])
RewriteCond %{HTTP:Accept-Language} ^sv [NC]
#If not already redirected
RewriteCond %{REQUEST_URI} !^/sv/ [NC]    # ADDED
#Redirect user to /sv/hauptseite address
#sending 301 (Moved Permanently) HTTP status code
RewriteRule ^$ /sv/ [L,R=301]
#The 'Accept-Language' header starts with 'de'
#and the test is case-insensitive ([NC])
RewriteCond %{HTTP:Accept-Language} ^de [NC]
#If not already redirected
RewriteCond %{REQUEST_URI} !^/de/ [NC]    # ADDED
#Redirect user to /de/hauptseite address
#sending 301 (Moved Permanently) HTTP status code
RewriteRule ^$ /de/ [L,R=301]
#For every other language (including English :)) use English
RewriteRule ^$ - [L]    # MODIFIED

Answer 2

此处的此行：

#For every other language (including English :)) use English
RewriteRule ^$ / [L,R=301]

正在将/重定向回/，导致重定向循环。你根本不需要这条线。