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，可能的网址为 http://example.com/@dave 。

现在，用户通常被称为@user，那么为什么不使用户页面@username？

解决方案

百分比编码...

您可以在HTTP URI路径中使用 @ 如果您百分比编码为％40 。

许多浏览器仍会显示 @ ，但例如当您将URI复制并粘贴到文本文档中时，将会是％40

。

...也可以直接在HTTP URI路径中使用 @ ，而不是直接对其进行百分号编码。

请参阅URI的路径的语法。除了段， segment-nz 或中的字符，路径可以包含各种不相关的子句c> segment-nz-nc 设置。 cch> set，其定义为：

  pchar = unreserved / pct-encoded / sub-delims / ：/@
  

如您所见， / code>是明确列出的。

segment-nz-nc c $ c> $ 字符显示：

  segment-nz- nc = 1 *（unreserved / pct-encoded / sub-delims /@）
  

这样的HTTP URI是完全有效的：

  http://example.com/@dave 
  





示例

第：

• 链接


• 复制和粘贴： http://en.wikipedia.org/wiki/%22@%22_%28album% 29

正如您所看到的，，（和）字符是百分比编码，但 @ 并直接使用 _ 。

Is it safe to use an @ symbol as part of a user? For example, a possible URL would be http://example.com/@dave.

The idea is that, nowadays, users are commonly called "@user", so why not make the user page "@username"?

解决方案

Percent-encoded …

You can use the @ character in HTTP URI paths if you percent-encode it as %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.

… but also directly

Instead of percent-encoding it, you may use @ directly in the HTTP URI path.

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 / ":" / "@"

As you can see, the @ is listed explicitly.

The segment-nz-nc set also lists the @ character explicitly:

segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" )

So, a HTTP URI like this is totally valid:

http://example.com/@dave

Example

Here is an example Wikipedia page:

• link
• copy-and-paste: http://en.wikipedia.org/wiki/%22@%22_%28album%29

As you can see, the ", (, and ) characters are percent-encoded, but the @ and the _ is used directly.

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