http - 什么是有效的 URL 查询字符串？

Question

URL 查询字符串中允许使用哪些字符？

查询字符串是否必须遵循特定格式？

Answer 1

根据 https://www.rfc-editor.org/rfc/rfc3986

在 2.2 保留字符部分，列出了以下字符:

reserved = gen-delims / sub-delims

gen-delims = “:” / “/” / “?” / “#” / “[” / “]” / “@”

sub-delims = “!” / “$” / “&” / “’” / “(” / “)” / “*” / “+” / “,” / “;”/ “=”

然后规范说:

If data for a URI component would conflict with a reserved character’spurpose as a delimiter, then the conflicting data must bepercent-encoded before the URI is formed.

接下来，在2.3节非保留字符中，列出了以下内容:

unreserved = ALPHA / DIGIT / “-” / “.” / “_” / “~”