重写文件路径中的 RewriteRule 检查文件是否存在 [英] RewriteRule checking file in rewriten file path exists

问题描述

如何使用ModRewrite来检查缓存文件是否存在，如果存在，则重写到缓存文件，否则重写为动态文件.

例如我有以下文件夹结构:

<前>页面.php缓存/页数/1.html2.htmltextToo.html等等.

您将如何为此设置 RewriteRules，以便可以像这样发送请求:

<前>example.com/pages/1

如果缓存文件存在则重写缓存文件，如果缓存文件不存在则重写pages.php?p=1

应该是这样的:(注意这行不通，否则我不会问这个)

<前>RewriteRule ^pages/([^/\.]+) cache/pages/$1.html [NC,QSA]RewriteCond %{REQUEST_FILENAME} -f [NC,OR]RewriteCond %{REQUEST_FILENAME} -d [NC]RewriteRule cache/pages/([^/\.]+).html pages.php?p=$1 [NC,QSA,L]

我可以使用 PHP 粗略地做到这一点，但我认为它必须使用 mod_rewrite 才能实现.

解决方案

RewriteRule ^pages/([^/\.]+) cache/pages/$1.html [NC,QSA]# 此时，我们已经将 pages/4 重写为 cache/pages/4.htmlRewriteCond %{REQUEST_FILENAME} !-f# 如果上面的 RewriteCond 成功了，我们就没有缓存，所以重写为# pages.php URI，否则我们会掉线并使用# 缓存/页面/4.htmlRewriteRule ^cache/pages/([^/\.]+).html pages.php?p=$1 [NC,QSA,L]

关闭 MultiViews 也很重要(如果您启用了它们).

选项 -MultiViews

否则初始请求 (/pages/...) 将在 mod_rewrite 启动之前自动转换为/pages.php.您也可以将 pages.php 重命名为其他名称(并更新最后的重写规则)避免多视图冲突.

我最初包括 RewriteCond ... !-d 但它是无关紧要的.

How can you use ModRewrite to check if a cache file exists, and if it does, rewrite to the cache file and otherwise rewrite to a dynamic file.

For example I have the following folder structure:

pages.php
cache/
  pages/
   1.html
   2.html
   textToo.html
   etc.

How would you setup the RewriteRules for this so request can be send like this:

example.com/pages/1

And if the cache file exists rewrite tot the cache file, and if the cache file does not exists, rewrite to pages.php?p=1

It should be something like this: (note that this does not work, otherwise I would not have asked this)

RewriteRule ^pages/([^/\.]+) cache/pages/$1.html [NC,QSA]
RewriteCond %{REQUEST_FILENAME} -f [NC,OR] 
RewriteCond %{REQUEST_FILENAME} -d [NC] 
RewriteRule cache/pages/([^/\.]+).html pages.php?p=$1 [NC,QSA,L]

I can off coarse do this using PHP but I thought it had to be possible using mod_rewrite.

解决方案

RewriteRule ^pages/([^/\.]+) cache/pages/$1.html [NC,QSA]

# At this point, we would have already re-written pages/4 to cache/pages/4.html
RewriteCond %{REQUEST_FILENAME} !-f

# If the above RewriteCond succeeded, we don't have a cache, so rewrite to 
# the pages.php URI, otherwise we fall off the end and go with the
# cache/pages/4.html
RewriteRule ^cache/pages/([^/\.]+).html pages.php?p=$1 [NC,QSA,L]

Turning off MultiViews is crucial (if you have them enabled) as well.

Options -MultiViews

Otherwise the initial request (/pages/...) will get automatically converted to /pages.php before mod_rewrite kicks in. You can also just rename pages.php to something else (and update the last rewrite rule as well) to avoid the MultiViews conflict.

Edit: I initially included RewriteCond ... !-d but it is extraneous.

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