mod_rewrite的意外行为了L位 [英] Mod_Rewrite unexpected behavior L flag
问题描述
我的Web应用程序的结构是：
my web application structure is:
/var/www/myapp/
- www/
- index.php
- css.php
- .htaccess
虚拟主机被配置为：
the virtual host is configured as:
<VirtualHost *:80>
ServerName www.example.org
DocumentRoot /var/www/myapp/www
DirectoryIndex index.php index.html
<Directory /var/www/myapp/www>
Options Indexes FollowSymLinks MultiViews
AllowOverride All
Order allow,deny
allow from all
</Directory>
</VirtualHost>
在/var/www/myapp/www/.htaccess有：
In /var/www/myapp/www/.htaccess there is:
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteBase /
RewriteRule css css.php [L,NC]
RewriteRule .* index.php
</IfModule>
现在，如果我叫www.example.org我正确地重定向到的index.php，但如果我叫www.example.org/css我还是始终重定向到的index.php。
Now, if I call www.example.org I'm correctly redirected to index.php, but if I call www.example.org/css I'm still redirected always to index.php.
如果我放弃行重写规则。*的index.php，然后调用www.example.org/css，我正确地重定向到css.php。
If I drop the line "RewriteRule .* index.php" and then call www.example.org/css, I'm correctly redirected to css.php.
有什么不对？
感谢所有非常
What's wrong? Thanks all very much
========编辑=========
======== EDIT =========
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b7080058/initial] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] add path info postfix: /var/www/sviluppo/mattia_dev/example/www/DEV_2 -> /var/www/sviluppo/mattia_dev/example/www/DEV_2/css/example1/test.css
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b7080058/initial] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] strip per-dir prefix: /var/www/sviluppo/mattia_dev/example/www/DEV_2/css/example1/test.css -> DEV_2/css/example1/test.css
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b7080058/initial] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] applying pattern '^(DEV|TEST|PROD)\_[0-9]+\/(css|js|image|static)\/(.+)$' to uri 'DEV_2/css/example1/test.css'
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b7080058/initial] (2) [perdir /var/www/sviluppo/mattia_dev/example/www/] rewrite 'DEV_2/css/example1/test.css' -> 'css/example1/test.css'
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b7080058/initial] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] add per-dir prefix: css/example1/test.css -> /var/www/sviluppo/mattia_dev/example/www/css/example1/test.css
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b7080058/initial] (2) [perdir /var/www/sviluppo/mattia_dev/example/www/] trying to replace prefix /var/www/sviluppo/mattia_dev/example/www/ with /
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b7080058/initial] (5) strip matching prefix: /var/www/sviluppo/mattia_dev/example/www/css/example1/test.css -> css/example1/test.css
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b7080058/initial] (4) add subst prefix: css/example1/test.css -> /css/example1/test.css
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b7080058/initial] (1) [perdir /var/www/sviluppo/mattia_dev/example/www/] internal redirect with /css/example1/test.css [INTERNAL REDIRECT]
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b63188e8/initial/redir#1] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] strip per-dir prefix: /var/www/sviluppo/mattia_dev/example/www/css/example1/test.css -> css/example1/test.css
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b63188e8/initial/redir#1] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] applying pattern '^(DEV|TEST|PROD)\_[0-9]+\/(css|js|image|static)\/(.+)$' to uri 'css/example1/test.css'
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b63188e8/initial/redir#1] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] strip per-dir prefix: /var/www/sviluppo/mattia_dev/example/www/css/example1/test.css -> css/example1/test.css
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b63188e8/initial/redir#1] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] applying pattern '.*' to uri 'css/example1/test.css'
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b63188e8/initial/redir#1] (2) [perdir /var/www/sviluppo/mattia_dev/example/www/] rewrite 'css/example1/test.css' -> 'index.php'
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b63188e8/initial/redir#1] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] add per-dir prefix: index.php -> /var/www/sviluppo/mattia_dev/example/www/index.php
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b63188e8/initial/redir#1] (2) [perdir /var/www/sviluppo/mattia_dev/example/www/] trying to replace prefix /var/www/sviluppo/mattia_dev/example/www/ with /
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b63188e8/initial/redir#1] (5) strip matching prefix: /var/www/sviluppo/mattia_dev/example/www/index.php -> index.php
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b63188e8/initial/redir#1] (4) add subst prefix: index.php -> /index.php
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b63188e8/initial/redir#1] (1) [perdir /var/www/sviluppo/mattia_dev/example/www/] internal redirect with /index.php [INTERNAL REDIRECT]
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b6310db8/initial/redir#2] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] strip per-dir prefix: /var/www/sviluppo/mattia_dev/example/www/index.php -> index.php
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b6310db8/initial/redir#2] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] applying pattern '^(DEV|TEST|PROD)\_[0-9]+\/(css|js|image|static)\/(.+)$' to uri 'index.php'
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b6310db8/initial/redir#2] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] strip per-dir prefix: /var/www/sviluppo/mattia_dev/example/www/index.php -> index.php
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b6310db8/initial/redir#2] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] applying pattern '.*' to uri 'index.php'
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b6310db8/initial/redir#2] (2) [perdir /var/www/sviluppo/mattia_dev/example/www/] rewrite 'index.php' -> 'index.php'
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b6310db8/initial/redir#2] (3) [perdir /var/www/sviluppo/mattia_dev/example/www/] add per-dir prefix: index.php -> /var/www/sviluppo/mattia_dev/example/www/index.php
192.168.1.8 - - [14/Jul/2012:19:07:21 +0200] [www.example.org/sid#b747b6c0][rid#b6310db8/initial/redir#2] (1) [perdir /var/www/sviluppo/mattia_dev/example/www/] initial URL equal rewritten URL: /var/www/sviluppo/mattia_dev/example/www/index.php [IGNORING REWRITE]
似乎发生了第一次重定向，但mod_rewrite的不会停止引起内部重定向。然后，更改URL，传递到mod_rewrite的另一个时间和发生第二重定向，但现在符合第二条规则。
Seems that a first redirect occurs but the mod_rewrite doesn't stop causing an internal redirect. Then, the changed url, is passed to mod_rewrite another time and a second redirect occured but now matching the second rule.
我不明白，因为我已经放在了[L]标志只是为了确保mod_rewrite的停止。
I can't understand it because I've placed the [L] flag just to ensure that the mod_rewrite stops.
由于其他时间
推荐答案
您缺少一个重要的事实有关的 →标志：
You are missing an important fact about the L flag:
这是非常重要的，如果你使用<一个href=\"http://httpd.apache.org/docs/current/mod/mod_rewrite.html#rewriterule\"><$c$c>RewriteRule在其中的一个指令[的.htaccess ，＆LT;目录＆GT; ]背景，即您采取明确的步骤避免循环的规则，而不是在[L]标志仅数终止了一系列执行规则
It is therefore important, if you are using
RewriteRuledirectives in one of these [.htaccess,<Directory>] contexts, that you take explicit steps to avoid rules looping, and not count solely on the [L] flag to terminate execution of a series of rules
的来源：大号|最后（标志）;由我粗体的
From: L|last (Flag); bold by me
这意味着，只有通过使用→不必prevent的INTERAL重定向你想要的效果。在内部重定向在这里是因为它一定会发生的，你们用自己的的.htaccess 配置中指定它。在→标志的不的右旗至prevent的内部重定向。
That means, only by using the L does not have your desired effect to prevent the interal redirect. The INTERNAL REDIRECT happens here because it must happen, you have specified it with your .htaccess configuration. The L flag is not the right flag to prevent the INTERNAL REDIRECT.
让我们看看你的问题密切，实际上发生了什么：
Let's look closer at your question and what actually happens:
我不明白，因为我已经放在了[L]标志只是为了确保mod_rewrite的停止。
I can't understand it because I've placed the [L] flag just to ensure that the mod_rewrite stops.
只是，你有→标记的错误undestanding。它只会停止当前重写，这意味着，它下面的重写规则指令不会在本轮（内环）进行处理。
Is just that you have the wrong undestanding of the L flag. It will only stop for the current rewriting, meaning, the RewriteRule directives beneath it are not going to be processed in the current round (the inner loop).
如果URI改变→将重新注入到下一轮（外循环），如下面的技术细节流程图显示：
If the URI changed L will re-inject into the the next round (the outer loop) as the following technical details flowchart shows:
要突出显示在→标志踢和，其中内部重定向情况发生，这是相同的图形与一些注释为您specfic（第一个）URI改写：
To highlight where the L flag kicks in and where the INTERNAL REDIRECT happens, this is the same graphic with some annotations for your specfic (first) URI rewrite:
这表明，→标记只退出内部循环，但如果URI已被重写（改变） - 在你的情况 - 外环负责的改URI会通过的再次的你的所有重写规则。
It shows that the L flag only exits the inner loop but if the URI has been rewritten (changed) - as in your case - the outer loop takes care that the changed URI will be passed again to all your rewrite rules.
相反，你可能要制定一个条件从手动显示的那部分下面的例子：
Instead you might want to formulate a condition as the following example from that part of the manual shows:
RewriteBase /
RewriteCond %{REQUEST_URI} !=/index.php
RewriteRule ^(.*) /index.php?req=$1 [L,PT]
（ PT 都有自己的手册进入，是或多或少不解决方案的一部分，只是指出，因为我引用这个例子原样）
(PT has it's own manual entry, is is more or less not part of the solution, just noting because I quoted the example as-is)
您真的想使用什么是 END 标记：
What you actually want to use is the END flag:
RewriteRule css css.php [END,NC]
不过与系统管理员联系，如果你有这方面需要的Apache的版本（可在2.3.9或更高版本）。如果没有，你需要运行<一个href=\"http://httpd.apache.org/docs/current/mod/mod_rewrite.html#rewritecond\"><$c$c>RewriteCond.
这篇关于mod_rewrite的意外行为了L位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！
