I need a java library to read vcard files (vcf).
A search for Java and vcard yields quite a few results.
In particular there's the Mime-Dir-j which is no longer under active development, but may be all you need, and vcard4j which seems to have been dormant for even longer (last release 2003!).
ez-vcard supports versions 2.1, 3.0, and 4.0 of the vCard standard, as well as XML-encoded vCards ("xCard" standard), HTML-encoded vCards ("hCard" microformat), and JSON-encoded vCards ("jCard" standard).
https://github.com/mangstadt/ez-vcard
To read a vCard file, use the Ezvcard.parse() method. Then, call the various getter methods on the returned VCard object to retrieve the vCard data fields.
File file = new File("my-vcard.vcf");
VCard vcard = Ezvcard.parse(file).first();
System.out.println("Name: " + vcard.getFormattedName().getValue());
System.out.println("Email: " + vcard.getEmails().get(0).getValue());
Haven't used it yet (about to try it out), but this looks promising.
I found this API that might do the trick: http://sourceforge.net/projects/mime-dir-j/
Try Google, Yahoo, whatever and find http://vcard4j.sourceforge.net/
Well, just in case you want to use a mobile phone, JSR75 does it right out of the box:
javax.microedition.pim.PIM.fromSerialFormat is specified as supporting vCard 3.0
来源：https://stackoverflow.com/questions/672704/where-to-find-a-java-library-to-read-vcard-files