code: public static void validate(String token,boolean validateExpire){
  		long timestamp = 0;
  		Date date = new Date();
  		String cryptKey = getCryptKey(date);
  		try {
  			timestamp = Long.parseLong(DES.decrypt(cryptKey,token).substring(6));
  		} catch (Exception e) {
  			throw new JeesuiteBaseException(4005, "格式不正确");
  		}
  		if(validateExpire && date.getTime() - timestamp > EXPIRE){
  			throw new JeesuiteBaseException(4005, "token已过期");
  		}
  	}
docs: 验证带签名信息的token