HTTP响应标题：多个链接值 [英] HTTP response headers: multiple Link values
问题描述
我正在为Rails应用程序开发SEO。
I'm working on SEO for a Rails App.
该网站完全本地化，我遵循此Google文章为网页添加 hreflang备用链接。
The website is fully localized, and I'm following this google article to add hreflang alternate links to the pages.
< head> 中的HTML链接都可以。
The HTML links in the <head> are ok.
I在响应标题中遇到麻烦。
据我所知，我应该为每个备选版本的页面提供值，但我不确定如何设置多个值。
I understand that I'm supposed to provide values for each alternative version of the page, but I'm not sure about how to set multiple values.
我试图将它们作为逗号分隔列表传递。浏览器似乎可以正确接收它，但是由于各个值包含分号，因此它看起来错误。
I tried to pass them as a comma separated list. Browsers seem to receive it correctly, but since individual values contain semi-colons it looks wrong.
是否有任何参考？
即使是已知正确实现它的示例网页也会有所帮助。
Is there any reference on it? Even an example webpage that is known to implement it correctly would help.
推荐答案
我没有这方面的经验，但根据同一RFC中的示例，它们以逗号分隔：
I have no experience with this, but according to the examples in the same RFC they get separated by comma:
Link: </TheBook/chapter2>;
rel="previous"; title*=UTF-8'de'letztes%20Kapitel,
</TheBook/chapter4>;
rel="next"; title*=UTF-8'de'n%c3%a4chstes%20Kapitel
a href =http://tools.ietf.org/html/rfc5988#section-5.3> 5.3 （强调我的）：
It’s indirectly confirmed by 5.3 (emphasis mine):
请注意，扩展关系类型必须是链接标题中的绝对URI，并且如果它们包含分号（;）或逗号（，）（，因为使用这些字符时必须加引号作为标题本身的分隔符）。
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