[JWT Regex] #Java #Regex

jwtRegex.java

    private static final Charset UTF_8 = Charset.forName("UTF-8");
    private static final Pattern JWT_PATTERN = Pattern.compile("^([a-zA-Z0-9\\-_]+=*)\\.([a-zA-Z0-9\\-_]+=*)\\.([a-zA-Z0-9\\-_]+=*)$");

      Matcher matcher = JWT_PATTERN.matcher(jwt);
      if (matcher.matches())
      {
        String header = matcher.group(1);
        String body = matcher.group(2);
        String signature = matcher.group(3);
      }