如何匹配与正则表达式＆QUOT;最短的匹配＆QUOT;在.NET [英] How to Match with Regex "shortest match" in .NET

问题描述

我现在面临一个问题，正则表达式......我必须匹配的SharePoint URL。我需要匹配的最短

I'm facing a problem with Regex... I had to match sharepoint URL.. I need to match the "shortest"

是这样的：

http://aaaaaa/sites/aaaa/aaaaaa/

m = Regex.Match(URL, ".+/sites/.+/");

m.Value等于整个字符串...

m.Value equals to the whole string...

我怎样才能使其匹配

http://aaaaaaa/sites/aaaa/

和没有别的？

非常感谢你！

推荐答案

+ 是贪婪的，所以它会停止之前匹配尽可能多的字符可能。 ？将其更改为 + 和比赛将尽快结束，因为可能的：

.+ is greedy, so it will match as many characters as possible before stopping. Change it to .+? and the match will end as soon as possible:

m = Regex.Match(URL, ".+/sites/.+?/");

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