Java 正则表达式中的重音
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Accent in Regular Expression in Java
提问by Rafael
I'd like to use Hibernate Validator to validate some columns. The problem, as I understand, is that the \w marker in java doesn't accept letters with accents on them.
我想使用 Hibernate Validator 来验证一些列。据我了解，问题在于 java 中的 \w 标记不接受带有重音符号的字母。
Is there any way that I could write the regexp so that words like Relatório could be validated (i wouldn't want to write all letters with accents between brackets, because I expect to be writing this regexp in a lot of columns)?
有什么方法可以编写正则表达式，以便可以验证像 Relatório 这样的单词（我不想在括号之间写所有带重音的字母，因为我希望在很多列中编写这个正则表达式）？
回答by Rachel Shallit
The Java regex documentationhas a section on Unicode categories (search for "Classes for Unicode blocks and categories"). If you're just looking for letters, I think \p{L}is the category you want.
在Java的正则表达式的文件对Unicode的类别（搜索“类对Unicode块和类别”）的部分。如果您只是在寻找字母，我认为这\p{L}就是您想要的类别。
回答by Havnar
I had more luck with:
我有更多的运气：
\p{InCombiningDiacriticalMarks}+
In java I use the following method:
在java中，我使用以下方法：
import java.text.Normalizer;
import java.text.Normalizer.Form;
public static String removeAccents(String text) {
return text == null ? null :
Normalizer.normalize(text, Form.NFD)
.replaceAll("\p{InCombiningDiacriticalMarks}+", "");
}
