如何在 css URL 中使用相对/绝对路径？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/5815452/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to use relative/absolute paths in css URLs?
提问by danidacar
I have a production and development server. The problem is the directory structure.
我有一个生产和开发服务器。问题是目录结构。
Development:
发展：
http://dev.com/subdir/images/image.jpghttp://dev.com/subdir/resources/css/style.css
http://dev.com/subdir/images/image.jpghttp://dev.com/subdir/resources/css/style.css
Production:
生产：
http://live.com/images/image.jpghttp://live.com/resources/css/style.css
http://live.com/images/image.jpghttp://live.com/resources/css/style.css
How can I have a style.cssin cssfolder that uses on both servers the same path for the background: urlproperty? Is there a trick I can use with relative paths?
怎样才可以有一个style.css在css文件夹中两台服务器的相同的路径上使用background: url的财产？我可以使用相对路径的技巧吗？
回答by Kobi
The URL is relative to the location of the CSS file, so this should work for you:
URL 是相对于 CSS 文件的位置，所以这应该适合你：
url('../../images/image.jpg')
The relative URL goes two folders back, and then to the imagesfolder - it should work for both cases, as long as the structure is the same.
相对 URL 返回两个文件夹，然后返回到images文件夹 - 只要结构相同，它应该适用于两种情况。
From https://www.w3.org/TR/CSS1/#url:
来自https://www.w3.org/TR/CSS1/#url：
Partial URLs are interpreted relative to the source of the style sheet, not relative to the document
部分 URL 相对于样式表的源进行解释，而不是相对于文档
回答by Garison Piatt
Personally, I would fix this in the .htaccess file. You should have access to that.
就个人而言，我会在 .htaccess 文件中解决这个问题。你应该可以访问它。
Define your CSS URL as such:
像这样定义你的 CSS URL：
url(/image_dir/image.png);
In your .htacess file, put:
在您的 .htacess 文件中，输入：
Options +FollowSymLinks
RewriteEngine On
RewriteRule ^image_dir/(.*) subdir/images/
or
或者
RewriteRule ^image_dir/(.*) images/
depending on the site.
取决于网站。
回答by pleasedontbelong
i had the same problem... every time that i wanted to publish my css.. I had to make a search/replace.. and relative path wouldnt work either for me because the relative paths were different from dev to production.
我遇到了同样的问题......每次我想发布我的 css.. 我必须进行搜索/替换......并且相对路径对我不起作用，因为相对路径从开发到生产不同。
Finally was tired of doing the search/replace and I created a dynamic css, (e.g. www.mysite.com/css.php) it's the same but now i could use my php constants in the css. somethig like
最后厌倦了搜索/替换，我创建了一个动态 css，（例如 www.mysite.com/css.php）它是一样的，但现在我可以在 css 中使用我的 php 常量。类似的东西
.icon{
background-image:url('<?php echo BASE_IMAGE;?>icon.png');
}
and it's not a bad idea to make it dynamic because now i could compress it using YUI compressor without loosing the original format on my dev server.
让它动态化并不是一个坏主意，因为现在我可以使用 YUI 压缩器来压缩它，而不会丢失我的开发服务器上的原始格式。
Good Luck!
祝你好运！
