java正则获取域名

public static void main(String[] args) {try{String url = "http://blog.csdn.net/xb12369";Pattern p = Pattern.compile("(?<=http://|\\.)[^.]*?\\.(com|cn|net|org|biz|info|cc|tv)",Pattern.CASE_INSENSITIVE);Matcher matcher = p.matcher(url);matcher.find();System.out.println("域名是："+matcher.group());p = Pattern.compile("[^//]*?\\.(com|cn|net|org|biz|info|cc|tv)", Pattern.CASE_INSENSITIVE);matcher = p.matcher(url);matcher.find();System.out.println("完整的域名是："+matcher.group());}catch(Exception ex){ex.printStackTrace();}}

控制台打印得到：

域名是：csdn.net完整的域名是：blog.csdn.net