java - Regular expression for excluding special characters

Question

(Closed). This question needs to be more focused. It is not currently accepting answers. question from:https://stackoverflow.com/questions/756567/regular-expression-for-excluding-special-characters

Answer 1

I would just white list the characters.

^[a-zA-Z0-9??ü??ü]*$

Building a black list is equally simple with regex but you might need to add much more characters - there are a lot of Chinese symbols in unicode ... ;)

^[^<>%$]*$

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