可以“双点"成为URL路径部分的一部分 [英] Can "double-dots" be part of the path part of an URL

问题描述

像下面的示例一样，在URL中使用父目录双点字是否安全有效?

Is it valid and safe to use the parent directory double-dots inside an URL like in the following example:

http://example.com/path/../to/file.jpg

推荐答案

RFC3986 定义URI.

它描述了路径是如何分层的以及如何...

It describes how paths are hierarchical, and how...

路径段为."和".."，也称为点段

The path segments "." and "..", also known as dot-segments

...以类似于文件系统路径的方式工作.

... work in a similar way to filesystem paths.

它还描述了相对分辨率"的规则，其中可能删除了.和 .. .

It also describes rules for "relative resolution" in which . and .. may be removed.

从本质上讲，这是合法的，并且可以满足您的期望.

Essentially, it is legal and does what you expect.

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