正确的正则表达式，用于用基本的“-"代替破折号在java中 [英] the correct regex for replacing em-dash with a basic "-" in java

问题描述

我的问题与String类的replaceAll方法有关.

My question concerns the replaceAll method of String class.

我的目的是将文本中的所有破折号替换为基本的-".我知道em-dash的unicode字符是\ u2014.

My purpose is to replace all the em-dashes in a text with a basic "-". I know the unicode character of em-dash is \u2014.

我以以下方式尝试过:

String s = "asd – asd";
s = s.replaceAll("\u2014", "-");

仍然，不替换破折号.我在做什么错了?

Still, the em-dash is not replaced. What is it I'm doing wrong?

推荐答案

问题编辑后进行次要

您可能根本没有使用破折号.如果您不确定自己拥有什么，一个不错的解决方案是简单地找到并替换所有破折号... em或其他.看看 此答案 ，您可以尝试对所有的破折号使用 Unicode破折号标点属性 > \\ p {Pd}

You might not be using an em-dash at all. If you're not sure what you have, a nice solution is to simply find and replace all dashes... em or otherwise. Take a look at this answer, you can try to use the Unicode dash punctuation property for all dashes ==> \\p{Pd}

String s = "asd – asd";
s = s.replaceAll("\\p{Pd}", "-");

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工作示例 用上述代码替换破折号和常规破折号.

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Working example replacing an em dash and regular dash both with the above code.

参考文献:
Unicode正则表达式

References:
public String replaceAll(String regex, String replacement)
Unicode Regular Expressions

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