Question

我有一个像这样的文件目录的网站

/index.php (home page)

/storage (file storage directory)
    /800 (800 pixel width dir)
        /800x200.png
        /800x350.png
        ....
    /200 (200 pixel width dir)
        /200x150.png
        /200x185.png
        ...
    ....

/css
    /style.css

/images
    /logo.png

/jscript
    /autoload.js

现在，用户将发出请求http://example.com/images/200x150或http://example.com/images/200x180。从两个网址我们知道第一张图片存在于/storage/200/200x150.png中，但不存在于第二张图片中。

所以，我想为此写.htaccess（理论上这里）。

Rewrite Condition /storage/{width}/{widthxheight}.png existed?
Rewrite Rule {output the image}
Rewrite Failed {go to /somedir/failed.php}

我该怎么做？

Answer 1

从您的示例中，图像请求的典型网址就像这样

http://example.com/images/WidthxHeight

其中Width和Height是变量而images是固定字符串。

典型的替换网址应该是这样的：

http://example.com/storage/Width/WidthxHeight.png

Width和Height是从传入网址传递的参数，而storage和png是固定字符串。

你可以试试这个：

Options +FollowSymlinks -MultiViews
RewriteEngine On
RewriteBase /

# Make sure the request is for an image file
RewriteCond %{REQUEST_URI}  ^/images/([^x]+)x([^/]+)/?   [NC]

# Don't want loops
RewriteCond %{REQUEST_URI}  !storage                     [NC]

# Make sure the file exists
RewriteCond %{REQUEST_FILENAME}    -f

# If all conditions are met, rewrite
RewriteRule .*   /storage/%1/%1x%2.png                   [L]

## Else, map to failed.php
RewriteCond %{REQUEST_URI}  !storage                     [NC]
RewriteCond %{REQUEST_URI}  !failed\.php                 [NC]
RewriteRule .*   /somedir/failed.php                     [L]

更新

对于带有一个参数且没有参数的传入URL，有2个附加规则。

Options +FollowSymlinks -MultiViews
RewriteEngine On
RewriteBase /

## New option 1
## Check if the request has any parameter
RewriteCond %{REQUEST_URI}  !storage                   [NC]
RewriteCond %{REQUEST_FILENAME}    -f
RewriteRule ^images/?$   /storage/200/200x200.png      [L,NC]

## New option 2
## Check if the request has only 1 parameter
RewriteCond %{REQUEST_URI}  !x                          [NC]
RewriteCond %{REQUEST_URI}  !storage                    [NC]
RewriteCond %{REQUEST_FILENAME}    -f
RewriteRule ^images/([^/]+)/?$   /storage/$1/$1x$1.png  [L,NC]

## Check if the request has 2 parameters
RewriteCond %{REQUEST_URI}  !storage                    [NC]
RewriteCond %{REQUEST_FILENAME}    -f
RewriteRule ^images/([^x]+)x([^/]+)/?  /storage/$1/$1x$2.png  [L,NC]

## Else, map to failed.php
RewriteCond %{REQUEST_URI}  !storage                     [NC]
RewriteCond %{REQUEST_URI}  !failed\.php                 [NC]
RewriteRule .*   /somedir/failed.php                     [L]

对于永久和可见的重定向，将[L，NC]替换为[R = 301，L，NC]

Answer 2

取决于.htaccess当前的设置方式，您可以将所有非现有文件路由到failed.php：

RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule . /failed.php [L]

Apache .htaccess图像存在检查和重定向

2 个答案:

更新