jwt 生成的token exp 的单位是秒

public class Test {
    public static void main(String[] args) throws UnsupportedEncodingException {
        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = null;
        Date date1 = null;

        date = new Date(System.currentTimeMillis() + (365 * 24 * 60 * 60 * 1000L));

        date1 = new Date(1621329814000L);

        System.out.println(dateFormat.format(date));
        System.out.println(dateFormat.format(date1));

        System.out.println(new String(Base64.getDecoder().decode("eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9".getBytes("utf-8"))));
    }
}