replace any non-ascii character in a string in java

问题

How would one convert -lrb-300-rrb- 922-6590 to -lrb-300-rrb- 922-6590 in java?

Have tried the following:

t.lemma = lemma.replaceAll("\\p{C}", " ");
t.lemma = lemma.replaceAll("[\u0000-\u001f]", " ");

Am probably missing something conceptual. Will appreciate any pointers to the solution.

Thank you

回答1:

Try the next:

str = str.replaceAll("[^\\p{ASCII}]", " ");

By the way, \p{ASCII} is all ASCII: [\x00-\x7F].

In ahother hand, you need to use a constant of Pattern for avoid recompiled the expression every time.

private static final Pattern REGEX_PATTERN = 
        Pattern.compile("[^\\p{ASCII}]");

public static void main(String[] args) {
    String input = "-lrb-300-rrb- 922-6590";
    System.out.println(
        REGEX_PATTERN.matcher(input).replaceAll(" ")
    );  // prints "-lrb-300-rrb- 922-6590"
}

See also:

• http://en.wikipedia.org/wiki/ASCII
• http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html

回答2:

Assuming you only want to keep a-zA-Z0-9 and punctuation characters, you could do:

t.lemma = lemma.replaceAll("[^\\p{Punct}\\w]", " "));

来源：https://stackoverflow.com/questions/18623868/replace-any-non-ascii-character-in-a-string-in-java