我可以在 URL 中使用 at 符号 (@) 吗? [英] Can I use an at symbol (@) inside URLs?
问题描述
作为用户的一部分使用 @ 符号是否安全?例如，一个可能的 URL 是 http://example.com/@dave.
Is it safe to use an @ symbol as part of a user? For example, a possible URL would be http://example.com/@dave.
这个想法是，现在用户通常被称为@user"，那么为什么不将用户页面设为@username"呢?
The idea is that, nowadays, users are commonly called "@user", so why not make the user page "@username"?
推荐答案
百分比编码……
如果您percent，您可以在 HTTP URI 路径中使用 @ 字符- 编码为%40.
许多浏览器仍将其显示为 @，但例如当您将 URI 复制并粘贴到文本文档中时，它将是 %40.
Many browsers would display it still as @, but e.g. when you copy-and-paste the URI into a text document, it will be %40.
您可以直接在 HTTP URI 路径中使用 @ 代替百分比编码.
Instead of percent-encoding it, you may use @ directly in the HTTP URI path.
查看 URI 的路径的语法.除了各种不相关的子句，路径可能由 segment、segment-nz 或 segment-nz-nc 集合中的字符组成.segment 和 segment-nz 由 pchar 集合中的字符组成，定义为:
See the syntax for the path of an URI. Various unrelated clauses aside, the path may consist of characters in the segment, segment-nz, or segment-nz-nc set. segment and segment-nz consist of characters from the pchar set, which is defined as:
pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
如您所见，@ 已明确列出.
As you can see, the @ is listed explicitly.
segment-nz-nc 集还明确列出了 @ 字符:
The segment-nz-nc set also lists the @ character explicitly:
segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" )
所以，像这样的 HTTP URI 是完全有效的:
So, a HTTP URI like this is totally valid:
http://example.com/@dave
示例
这是一个维基百科页面示例:
Example
Here is an example Wikipedia page:
- 链接
- 复制粘贴:
http://en.wikipedia.org/wiki/%22@%22_%28album%29
如您所见，"、( 和 ) 字符是百分比编码的，但 @code> 和 _ 直接使用.
As you can see, the ", (, and ) characters are percent-encoded, but the @ and the _ is used directly.
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