正则表达式匹配多个字符串 [英] Regex to match multiple strings

问题描述

我需要创建一个正则表达式可以匹配多个字符串。例如，我想找到一个好或伟大的所有实例。我发现了一些例子，但似乎我想出了不工作：

I need to create a regex that can match multiple strings. For example, I want to find all the instances of "good" or "great". I found some examples, but what I came up with doesn't seem to work:

\b(good|great)\w*\b

任何人都可以点我在正确的方向？

Can anyone point me in the right direction?

编辑：我要指出，我不希望只是全字匹配。例如，我可能要匹配OOD或不动产资产信托，以及（的词的部分）。

I should note that I don't want to just match whole words. For example, I may want to match "ood" or "reat" as well (parts of the words).

编辑2：下面是一些示例文本：这是一个真正伟大的故事。的
我可能要匹配这个或真正的，或者我可能要匹配eall或不动产资产信托。

Edit 2: Here is some sample text: "This is a really great story." I might want to match "this" or "really", or I might want to match "eall" or "reat".

推荐答案

如果你能保证有你的话清单中没有保留正则表达式的字符（或者，如果你逃避他们），你可以只使用这code到让大的单词列表到 @（A |大|字|列表）。没有什么错的 |为你使用它运营商，只要那些（）围绕着它。这听起来像 \\ W * 和 \\ b 模式是什么干扰你的比赛。

If you can guarantee that there are no reserved regex characters in your word list (or if you escape them), you could just use this code to make a big word list into @"(a|big|word|list)". There's nothing wrong with the | operator as you're using it, as long as those () surround it. It sounds like the \w* and the \b patterns are what are interfering with your matches.

String[] pattern_list = whatever;
String regex = String.Format("({0})", String.Join("|", pattern_list));

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