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问题mod_rewrite

当谈到 Apache 的mod_rewrite. 我已经就此事发布了一个问题，并且已经澄清，但我继续收到错误，我在配置中看不到任何逻辑错误。任何帮助将不胜感激！

.htaccess我正在使用的是以下内容：

# Begin Rewrite Module for http://*.example.com/
# ==============================================
<IfModule mod_rewrite.c>

    # Turn the rewrite engine on and set the base path.
    RewriteEngine On
    RewriteBase /

    # Map subdomains to their respective directories.
    RewriteCond %{HTTP_HOST} ^([^\.]+)\.example\.com$ [NC]
    RewriteRule ^(.*)$ public_subdomains/%1/$1 [L]

</IfModule>

由于内部重定向太多，这不起作用，导致500 Internal Server Error- 这是它的调试日志：

[Fri Feb 15 16:49:30.318509 2013] [core:error] [pid 2316:tid 1708] [client 127.0.0.1:9141] AH00124: Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace.
[Fri Feb 15 16:49:30.318509 2013] [core:debug] [pid 2316:tid 1708] core.c(3502): [client 127.0.0.1:9141] AH00121: r->uri = /public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/index.php
[Fri Feb 15 16:49:30.318509 2013] [core:debug] [pid 2316:tid 1708] core.c(3508): [client 127.0.0.1:9141] AH00122: redirected from r->uri = /public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/index.php
[Fri Feb 15 16:49:30.318509 2013] [core:debug] [pid 2316:tid 1708] core.c(3508): [client 127.0.0.1:9141] AH00122: redirected from r->uri = /public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/index.php
[Fri Feb 15 16:49:30.318509 2013] [core:debug] [pid 2316:tid 1708] core.c(3508): [client 127.0.0.1:9141] AH00122: redirected from r->uri = /public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/index.php
[Fri Feb 15 16:49:30.318509 2013] [core:debug] [pid 2316:tid 1708] core.c(3508): [client 127.0.0.1:9141] AH00122: redirected from r->uri = /public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/index.php
[Fri Feb 15 16:49:30.318509 2013] [core:debug] [pid 2316:tid 1708] core.c(3508): [client 127.0.0.1:9141] AH00122: redirected from r->uri = /public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/index.php
[Fri Feb 15 16:49:30.318509 2013] [core:debug] [pid 2316:tid 1708] core.c(3508): [client 127.0.0.1:9141] AH00122: redirected from r->uri = /public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/index.php
[Fri Feb 15 16:49:30.318509 2013] [core:debug] [pid 2316:tid 1708] core.c(3508): [client 127.0.0.1:9141] AH00122: redirected from r->uri = /public_subdomains/sub1/public_subdomains/sub1/public_subdomains/sub1/index.php
[Fri Feb 15 16:49:30.318509 2013] [core:debug] [pid 2316:tid 1708] core.c(3508): [client 127.0.0.1:9141] AH00122: redirected from r->uri = /public_subdomains/sub1/public_subdomains/sub1/index.php
[Fri Feb 15 16:49:30.318509 2013] [core:debug] [pid 2316:tid 1708] core.c(3508): [client 127.0.0.1:9141] AH00122: redirected from r->uri = /public_subdomains/sub1/index.php
[Fri Feb 15 16:49:30.318509 2013] [core:debug] [pid 2316:tid 1708] core.c(3508): [client 127.0.0.1:9141] AH00122: redirected from r->uri = /

我找到了一种解决方案，通过替换 RewriteRule 上的[L]标志的[END]标志，它完美地将请求 URI 映射到子域目录中的相应文件。

不幸的是，它工作得太完美了。当它应该重写为（假设设置为 DirectoryIndex）时，调用subdomain.example.com/folder/interally rewritesexample.com/public_subdomains/subdomain/folder/而不考虑DirectoryIndex。example.com/public_subdomains/subdomain/folder/index.phpindex.php

如果有人可以帮助我阐明这一点，我将永远感激不尽！

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1 回答 1

4

好吧，有一个逻辑错误好吧。让我向您推荐文档中精彩的控制流程图：

关于 mod_rewrite 工作的控制流程图

你看，内部重定向也是一个请求，所以它再次被任何和所有重写规则处理。因此，假设用户请求 something.example.com/x: RewriteRule macthes，RewriteCond 已完成，因此进行了到 public_subdomains/something/x 的内部重定向。新的请求是到something.example.com/public_subdomains/something/x：RewriteRule 匹配，RewriteCond 已经完成......你有无限循环。

[L] 标志仅停止处理当前请求：无论如何，该请求将在第二遍中处理。[END] 标志确实停止了循环，但它是一个蛮力的事情，因为你已经注意到它有副作用，所以最好加入一个停止递归的条件。像这样的东西：

RewriteCond %{HTTP_HOST} ^([^\.]+)\.example\.com$ [NC]
RewriteCond %{REQUEST_URI} !^/public_subdomains/%1
RewriteRule ^(.*)$ public_subdomains/%1/$1 [L]

添加的 RewriteCond 将检查请求的 uri 是否已经以“public_subdomains/something”开头。

它未经测试，因此可能存在问题，但这是基本思想。

于 2013-02-15T17:50:52.710 回答