将URL十六进制代码转换为字符的正则表达式

Question

我有这个带有十六进制代码的示例网址：

http%3a%2f%2fwww.pmi.com%2feng%2fcareers%2fpages%2fjob_details.aspx%3fjlang%3deng%26jcod%3dUS-02073

我想在将这些十六进制代码转换为字符实体时制定正则表达式。

%2f => /

是否可以使用reg表达式将链接转换为此链接？

发件人：

http%3a%2f%2fwww.pmi.com%2feng%2fcareers%2fpages%2fjob_details.aspx%3fjlang%3deng%26jcod%3dUS-02073

输出：

http://www.pmi.com/eng/careers/pages/job_details.aspx?jlang=eng&jcod=US-02073

与此网站的功能类似：http://www.url-encode-decode.com/?_ga=1.244038725.1379940417.1464232194

Answer 1

在C＃中比在正则表达式中更容易完成：

using System.Net;

string URL = "http%3a%2f%2fwww.pmi.com%2feng%2fcareers%2fpages%2fjob_details.aspx%3fjlang%3deng%26jcod%3dUS-02073";
string DecodedURL = WebUtility.UrlDecode(URL);