基于URL中参数的代理 [英] Proxy based on parameter in the URL

问题描述

我想使用Apache HTTPd作为代理服务器:

I want to use the Apache HTTPd as a proxy server:

如果用户请求http://xxx?st=yyy，则所选的后端服务器应为server1.如果用户请求http://xxx(无st参数)，则后端服务器应为server2.

If a user requests http://xxx?st=yyy the chosen backend server should be server1. If a user requests http://xxx (no st parameter) then the backend server should be server2.

我想知道我需要如何配置Apache来实现这一目标.

I want to know how I need to configure Apache to achieve this.

推荐答案

看看

Have a look at http://httpd.apache.org/docs/current/mod/mod_rewrite.html and the examples; specifically you are helped by the fact that:

• REQUEST_URI 所请求URI的路径部分，例如"/index.html". 尤其是排除查询字符串，该查询字符串可以作为其自己的名为QUERY_STRING的变量来使用.

• REQUEST_URI The path component of the requested URI, such as "/index.html". This notably excludes the query string which is available as as its own variable named QUERY_STRING.

然后让您做类似的事情

RewriteCond  %{QUERY_STRING}  ^$
RewriteRule ^/foo/(.*)$ http://server2/$1 [P,L]

RewriteRule ^/foo/(.*)$ http://server1/$1 [P,L]

，依此类推.如果是整个服务器-删除/foo/，在$ 1之前/，如果它是服务器特定的，则在其前面放一个额外的RewriteCond以限制到特定的主机，依此类推.

and so on. If it is the entire server - remove /foo/ and the / before $1 - if it is server specific - put an extra RewriteCond in front of it to limit to a specific host and so on.

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