public String getSuccessMessage() {
    //獲取時間的年月日時分秒
    Calendar now = Calendar.getInstance();
    now.setTime(this.getBidPriceTime());
    int year = now.get(Calendar.YEAR);
    int month = now.get(Calendar.MONTH) + 1; // 0-based!
    int day = now.get(Calendar.DAY_OF_MONTH);
    Time sfm = new
 
 Time(now.getTimeInMillis());
    return "恭喜！您於"+year+"年"+month+"月"+day+"日 "+sfm+"參與競價的編號為"+this.getOrderNo()+"的訂單，出價金額為"
      +this.getCharge()+"元，競價成功！";
  }