Java忽略字符串匹配中的特殊字符

Question

I want to match two strings in java eg.

text: János

searchExpression: Janos

Since I don't want to replace all special characters, I thought I could just make the á a wildcard, so everything would match for this character. For instance if I search in János with Jxnos , it should find it. Of course there could be multiple special characters in the text. Does anyone have an idea how I could achieve this via any pattern matcher, or do I have to compare char by char?

Answer 1

use pattern and matcher classes with J\\\\Snos as regex. \\\\S matches any non-space character.

String str = "foo János bar Jxnos";
Matcher m = Pattern.compile("J\\Snos").matcher(str);
while(m.find())
{
    System.out.println(m.group());
}

Output:

János
Jxnos

Answer 2

A possible solution would be to strip the accent with the help of Apache Commons StringUtils.stripAccents (input) method:

String input = StringUtils.stripAccents("János");
System.out.println(input); //Janos

Make sure to also read upon the more elaborate approaches based on the Normalizer class: Is there a way to get rid of accents and convert a whole string to regular letters?