/** 取车 */
  public boolean drawOut(ParkCard parkCard, Car car) throws Exception {
    boolean b = false;

    if (parkCard == null) {
      System.out.println("无效的停车卡!");
      return false;
    }

    if (car == null) {
      System.out.println("车辆信息无效!");
      return false;
    }

    if (this.isAllParkEmpty()) {
      System.out.println("非法的取车请求:当前所有停车场均无车!");
      return false;
    }

    String cardId = parkCard.getCardId();
    ParkCard readyCard = this.parkCardMap.get(cardId);

    if (readyCard == null) {
      System.out.println("无效的停车卡!");
      return false;
    }

    Car readyCar = readyCard.getCar();
    if (!car.getNumber().equalsIgnoreCase(readyCar.getNumber())) {
      System.out.println("车卡不一致,不允许取车!");
      return false;
    }

    Park readyPark = readyCard.getPark();
    this.parkCardMap.remove(cardId);
    int parkSpaceNum = readyPark.getSpaceNum();
    readyPark.setSpaceNum(parkSpaceNum + 1);
    System.out.println("车牌号为:" + car.getNumber() + "已成功从[" + readyPark.getParkName() + "]取出!");

    return b;
  }
  /**
   * 停车
   *
   * @param car
   * @return
   * @throws Exception
   */
  public ParkCard park(Car car) throws Exception {

    ParkCard parkCard = null;

    // 分配停车场
    Park park = this.distributePark();

    if (park == null) {
      System.out.println("对不起,所有停车场都没有空闲停车位!");
    } else {

      // 发卡停车
      parkCard = new ParkCard(park, car);
      this.parkCardMap.put(parkCard.getCardId(), parkCard);
      int parkSpaceNum = park.getSpaceNum();
      park.setSpaceNum(parkSpaceNum - 1);
      System.out.println("车牌号为:" + car.getNumber() + "已成功停车至[" + park.getParkName() + "]!");

      this.displaySpaceNum();
    }

    return parkCard;
  }