当执行proxy_pass到Tomcat时，Nginx如何将子域添加为参数 [英] How can Nginx add the Subdomain as parameter when a proxy_pass to Tomcat is executed

问题描述

我想要实现的目标

Web应用程序应该能够支持多个子域，而无需在每次新的子域都对nginx或tomcat进行任何更改时用过的。 （我已经对DNS进行了必要的更改以支持通配符子域）

What I am trying to achieve
The web application should be able to support multiple subdomains without having to make any changes on the nginx or tomcat every time a new subdomain is used. (I have already done the required changes to DNS to support wild card subdomains)

Nginx侦听端口80.它在端口8080处对tomcat执行proxy_pass。
nginx应该能够支持多个子域。

Nginx listens to port 80. It does a proxy_pass to tomcat at port 8080. nginx should be able to support multiple subdomain.

我当前的设置基于这个答案。但它没有传递参数

Nginx proxy_pass：是否可以向URL添加静态参数？

每个可能的子域

dynamic_subdomain_1.localhost

dynamic_subdomain_2.localhost

Every possible subdomain
dynamic_subdomain_1.localhost
dynamic_subdomain_2.localhost

nginx设置

server {
    listen 80 default_server;

    server_name ~^(?<subdomain>.+)\.localhost$;

    location / {
        set $args ?$args&site=$subdomain;
        proxy_pass http://127.0.0.1:8080;
    }
}

Nginx在调用时应将子域作为参数附加Tomcat。

Nginx should append the subdomain as a parameter when it invokes Tomcat.

每个子域名对Tomcat的调用应如下所示

http://127.0.0.1:8080?site=dynamic_subdomain_1
http://127.0.0.1:8080?site=dynamic_subdomain_2

我已尝试过上述设置，但查询参数始终显示为空。

I have tried the above setup but the query parameter always shows up as null.

我应该在nginx中做些什么才能使这成为可能呢？

What should I change in nginx to make this possible?

推荐答案

答案比这简单一点。只需获取子域的子字符串并将其用作proxy_pass的参数：

The answer is little bit simpler than that. Just get the substring with the subdomain and use it as a parameter for proxy_pass:

server {                                                         
  # this matches every subdomain of domain.
  server_name .domain;                                           

  location / {                                                   
    set $new_request_uri "";                                     
    set $subdomain "";

    if ($host ~* "^(.+)\.domain$") {                             
      set $subdomain $1;                                         
      # lets assume there are args...
      set $new_request_uri "$request_uri&subdomain=$subdomain";  
    }                                                            
    # if there are no args add a question mark and the subdomain argument
    if ($args = '') {                                            
      set $new_request_uri "$request_uri?subdomain=$subdomain";  
    }                                                            

    proxy_pass http://127.0.0.1:8080$new_request_uri;              
  }                                                              
} 

我考虑了带或不带args的请求。我认为它解决了你的问题。

I considered the request with or without args. I think it solves yout problem.

Alfredo

这篇关于当执行proxy_pass到Tomcat时，Nginx如何将子域添加为参数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！