RegEx.Replace问题 - 自定义URL重写

I am trying to write my own 301 Redirect. I have 2 strings. One is the old url and other one is new url. The example is below

我正在尝试编写自己的301重定向。我有2个字符串。一个是旧网址，另一个是新网址。示例如下

Original Url :

原始网址：

procurement-notice-(\d+).html

New url :

新网址：

/Bids/Details/$1

like this, i have plenty of old and new url. I am doing the below to match the Urls which works fine. where the "redirect" is a dictionary contains old and new urls.

像这样，我有很多新老网址。我正在做下面的匹配Urls工作正常。 “redirect”是一个包含旧网址和新网址的字典。

var matchedURL = redirect.SingleOrDefault(d => Regex.Match(url, d.Key, RegexOptions.Singleline).Success);

but now I want to replace the matched one with the new url.

但现在我想用新网址替换匹配的网址。

1 个解决方案

#1

You have matchedURL, where Key - old url regex, and Value - new url replacement pattern.

你有匹配的URL，其中Key - old url regex和Value - new url replacement pattern。

You can use Regex.Replace method, which accepts 3 string parameters.

您可以使用Regex.Replace方法，该方法接受3个字符串参数。

using System;
using System.Text.RegularExpressions;

class App
{
  static void Main()
  {
    var input = "procurement-notice-1234.html";
    var pattern = @"procurement-notice-(\d+).html";
    var replacement = "/Bids/Details/$1";
    var res = Regex.Replace(input, pattern, replacement);
    Console.WriteLine(res);
    // will output /Bids/Details/1234
  }
}

So in your case, code will probably look like this:

所以在你的情况下，代码可能如下所示：

var matchedURL = redirect.SingleOrDefault(d => Regex.Match(url, d.Key, RegexOptions.Singleline).Success);
if (matchedURL != null)
{
  var result = Regex.Replace(url, matchedURL.Key, matchedURL.Value);
}

#1