Nginx www重定向到具有子域的非www

问题描述：

对于该规则〜^(?\ w +).example.com，我如何从www重定向到非www?

How can i redirect from www to non www for this rule ~^(?\w+).example.com ?

server {
    listen 80;
    listen [::]:80 ipv6only=on;
    server_name ~^(?<subdomain>\w+)\.example\.com$;
}

我尝试单独的主域重定向和所有子域重定向，但是对主域具有递归重定向.

I try separate main domain redirect and all subdomains redirect but have recursive redirection for main domain.

server {
    server_name www.example.com;
    return 301 $scheme://example.com$request_uri;
}

server {
     server_name "~^www\.(.*)$" ;
     return 301 $scheme://$1$request_uri ;
}

然后我只能尝试

server {
     server_name "~^www\.(.*)$" ;
     return 301 $scheme://$1$request_uri ;
}

，并且适用于子域.但是在主域中，我可以重定向为$ request_uri，而没有域.

and that work for subdomains. But in main domain i have redirect for $request_uri without domain.

答

要记住的一件事是，如果nginx找不到匹配的server_name，它将使用默认服务器.而且，除非您定义default_server，否则它将使用第一个server块在适当的端口上进行侦听.有关详细信息，请参见本文档.

One thing to remember is that if nginx cannot find a matching server_name it will use the default server. And unless you define a default_server, it will use the first server block listening on the appropriate port. See this document for details.

很明显example.com与正则表达式~^(?<subdomain>\w+)\.example\.com$不匹配，但是，您当前的server块是有效的，因为它是隐式默认服务器.

Clearly example.com does not match the regular expression ~^(?<subdomain>\w+)\.example\.com$, however, your current server block works because it is the implicit default server.

正则表达式server块是按顺序求值的，因此请首先放置www.规则，以使www.example.com不被视为子域.

Regular expression server blocks are evaluated in order, so place the www. rule first so that www.example.com is not treated as a subdomain.

显式地将主server块设置为默认，以便其继续处理example.com.

Make the main server block default explicitly so that it continues to handle example.com.

server {
    server_name "~^www\.(.*)$" ;
    return 301 $scheme://$1$request_uri ;
}
server {
    listen 80 default_server;
    listen [::]:80 default_server ipv6only=on;
    server_name ~^(?<subdomain>\w+)\.example\.com$;
    ...
}

Nginx www重定向到具有子域的非www

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