字符串拆分，包括重音字符的单词

Question

I'm using this regex:

x.split("[^a-zA-Z0-9']+");

This returns an array of strings with letters and/or numbers.

If I use this:

String name = "CEN01_Automated_TestCase.java";
String[] names = name.Split.split("[^a-zA-Z0-9']+");

I got:

CEN01
Automated
TestCase
Java

But if I use this:

String name = "CEN01_Automação_Caso_Teste.java";
String[] names = name.Split.split("[^a-zA-Z0-9']+");

I got:

CEN01
Automa
o
Caso
Teste
Java

How can I modify this regex to include accented characters? (á,ã,õ, etc...)

Answer 1

From http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html

Categories that behave like the java.lang.Character boolean is methods (except for the deprecated ones) are available through the same \\p{prop} syntax where the specified property has the name javamethodname .

Since Character class contains isAlphabetic method you can use

name.split("[^\\p{IsAlphabetic}0-9']+");

You can also use

name.split("(?U)[^\\p{Alpha}0-9']+");

but you will need to use UNICODE_CHARACTER_CLASS flag which can be used by adding (?U) in regex.

Answer 2

I would check out the Java Documentation on Regular Expressions . There is a unicode section which I believe is what you may be looking for.

EDIT: Example

Another way would be to match on the character code you are looking for. For example

\uFFFF where FFFF is the hexadecimal number of the character you are trying to match.

Example: \à matches à

Realize that the backslash will need to be escaped in Java if you are using it as a string literal.

Read more about it here .

Answer 3

You can use this:

String[] names = name.split("[^a-zA-Z0-9'\\p{L}]+");

System.out.println(Arrays.toString(names)); Will output:

[CEN01, Automação, Caso, Teste, java]

See this for more information.

Answer 4

为什么不拆分分隔符？

String[] names = name.split("[_.]");

Answer 5

Instead of blacklisting all the characters you don't want, you could always whitlist the characters you want like :

^[^<>%$]*$

The expression [^(many characters here)] just matches any character that is not listed.

But that is a personnal opinion.