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Is there any Java or Javascript library that deals with email/phone numbers detection within text? I'm not talking about validating them, just want to find something that could potentially look like an email address of a phone number.
We're trying to prevent users to send this kind of information through our platform.
Just use regular expressions.
For an email address just use the regular expression for at least one letter or number followed by @ followed by at least one letter or number a dot and at least one more letter, so:
a@b.c could possibly be an email address as could somereallylongname@company.com ect. a possible re would be \w+@\w\.\w
Telephone numbers would be, depending on whether you are looking for long distance numbers only, something like \d{2}[ -]*\d{3}[ -]*\d{3,} but you might be better off locating potential phone numbers with a regex then using the google libphonenumber java/JS library which is a much more sophisticated library for checking and validating phone numbers and allows you to check if something is a possible phone number and if it is a valid phone number.
[w\.]+@(\w{2,}\.)+\w{2,} (to also take into account multilevel domains like abc.xyz.com). Phone numbers are a bit more tricky: from using formatting like +1-123-55555-321 via +1 (0123) 55555 321 to just 012355555321, everything could be a phone number. As one cannot filter all [0-9\+\-]*, this would require a more sophisticated filter – which some library might already cover (so better use that than to re-invent the wheel).
– Izzy♦
Jun 23 '16 at 13:03
