Nginx变量用于子域?

问题描述

我需要一个大师的建议.

I need a Guru's advice.

在Nginx的conf文件上，我想将子域作为变量，以便按如下方式重定向访问.

On Nginx's conf file, I would like to get the subdomain as a variable in order to redirect accesses as follow.

• 访问:http://userX.example.com/?hoo=bar
• 重定向:http://example.com/userX/?hoo=bar

• ACCESS: http://userX.example.com/?hoo=bar
• REDIRECT: http://example.com/userX/?hoo=bar

但我明白了

• 重定向:http://example.com/userX.example.com/?hoo=bar

我当前的_http.conf设置如下.显然，它是如此.

My current _http.conf settings are like below. So obviously it works so.

## default HTTP
server {
    listen       80;
    server_name  default_server;
    return       301 http://example.com/$host$request_uri;
}

下面有没有其他类似的物品或方式?

Are there any vaiables or ways to do like below?

## default HTTP
server {
    listen       80;
    server_name  default_server;
    return       301 http://example.com/$subdomain$request_uri;
}

我知道子域部分是否受限制，可以对其进行重定向，但是我每次都必须添加它们，并且我希望它保持尽可能简单.

I know if the subdomain part is limited it can be redirected, but I have to add them each time and I want it to keep as simple as possible.

有什么简单的方法吗?

[ENV] :CentOS:7.3.1611，nginx:nginx/1.13.3，*.example.com在NS设置中定位到同一服务器.

[ENV]: CentOS:7.3.1611, nginx: nginx/1.13.3, *.example.com is targetted to the same server in NS settings.

使用正则表达式:

server {
    listen       80;
    server_name  ~^(?<subdomain>.+)\.example\.com$;
    return       301 http://example.com/$subdomain$request_uri;
}

参考:评论，文档

推荐答案

您可以在server_name中使用正则表达式提取所需的部分作为命名捕获.例如:

You can use a regular expression in the server_name to extract the part you need as a named capture. For example:

server {
    listen       80;
    server_name  ~^(?<name>.+)\.example\.com$;
    return       301 http://example.com/$name$request_uri;
}

有关更多信息，请参见此文档.

See this document for more.

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