Html URL 中哪些字符是有效的？
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What characters are valid in a URL?
提问by blez
Possible Duplicate:
Which characters make a URL invalid?
可能的重复：
哪些字符使 URL 无效？
I'm trying to remove the non-URL part of a big string. Most of the regexes I found are like [A-Za-z0-9-_.!~*'()], but there are more things that can a url contain. Like http://127.0.0.1:8080/test?v=123#thisfor example
我正在尝试删除大字符串的非 URL 部分。我发现的大多数正则表达式都类似于[A-Za-z0-9-_.!~*'()]，但 url 可以包含更多内容。像http://127.0.0.1:8080/test?v=123#this例如
So what are the latest characters for a valid URL?
那么有效 URL 的最新字符是什么？
回答by ckittel
All the gory details can be found in the current RFC on the topic: RFC 3986 (Uniform Resource Identifier (URI): Generic Syntax)
所有血腥细节都可以在当前的 RFC 主题中找到： RFC 3986（统一资源标识符（URI）：通用语法）
Based on this related answer, you are looking at a list that looks like: A-Z, a-z, 0-9, -, ., _, ~, :, /, ?, #, [, ], @, !, $, &, ', (, ), *, +, ,, ;, %, and =. Everything else must be url-encoded. Also, some of these characters can only exist in very specific spots in a URI and outside of those spots must be url-encoded (e.g. %can only be used in conjunction with url encoding as in %20), the RFC has all of these specifics.
基于此相关的答案，你正在寻找一个列表，看起来像：A-Z，a-z，0-9，-，.，_，~，:，/，?，#，[，]，@，!，$，&，'，(，)，*，+，,，;，%，和=。其他所有内容都必须是url-encoded。此外，其中一些字符只能存在于 URI 中非常特定的位置，并且在这些位置之外必须进行 url 编码（例如%，只能与 url 编码结合使用%20），RFC 具有所有这些细节。
