Java实现商城订单超时取消功能

/**
 * 类说明
 *
 * @author grl
 * @date 2019年12月16日 新建
 */
public class Order implements Delayed {
  private String orderShopNum;
  /**
  * 1-普通活动 2-限时活动 3-拼购活动
  */
  private int orderType;
  private long orderCreateTime;
  private long expTime;
  public Order(String orderShopNum, int orderType, Date createTime) {
   if (StringUtils.isNotBlank(orderShopNum)) {
     this.orderShopNum = orderShopNum.trim();
   }
   if (createTime == null) {
     this.orderCreateTime = System.currentTimeMillis();
   } else {
     this.orderCreateTime = createTime.getTime();
   }
   this.orderType = orderType;
   if (orderType == 2) {
     this.expTime = TimeUnit.MILLISECONDS.convert(Const.LIMIT_ACTIVITY_EXPIRATION_TIME, TimeUnit.MINUTES)
        + createTime.getTime();
   }if(orderType == 3){
     this.expTime = TimeUnit.MILLISECONDS.convert(Const.LIMIT_GROUP_BUY_EXPIRATION_TIME, TimeUnit.MINUTES)
        + createTime.getTime();
   } else {
     this.expTime = TimeUnit.MILLISECONDS.convert(Const.ORDER_PAYMENT_DEADLINE, TimeUnit.DAYS)
        + createTime.getTime();
   }
  }
  public String getOrderShopNum() {
   return orderShopNum;
  }
  public long getOrderCreateTime() {
   return orderCreateTime;
  }
  public long getExpTime() {
   return expTime;
  }
  public int getOrderType() {
   return orderType;
  }
  @Override
  public int compareTo(Delayed o) {
   return Long.valueOf(this.expTime).compareTo(Long.valueOf(((Order) o).expTime));
  }
  @Override
  public long getDelay(TimeUnit unit) {
   return unit.convert(this.expTime - System.currentTimeMillis(), TimeUnit.MILLISECONDS);
  }
 
}
 
/**
 * 类说明
 *
 * @author grl
 * @date 2019年12月16日 新建
 */
public class OrderCollection {
  /**
  * 订单管理集合
  */
  private static DelayQueue<Order> orderList = new DelayQueue<Order>();
  private OrderCollection() {
  }
  /**
  * 获取订单集合
  * @author grl
  * @return
  */
  protected static DelayQueue getOrderCollection() {
   return orderList;
  } 
  /**
  * 向集合中添加订单
  * 
  * @author grl
  * @param order
  * @return
  */
  public static boolean add(Order order) {
   boolean flag = false;
   if (order != null && StringUtils.isNotBlank(order.getOrderShopNum())) {
     flag = orderList.offer(order);
   }
   return flag;
  }
  /**
  * 从集合中删除订单
  * 
  * @author grl
  * @param orderShopNum
  * @return
  */
  public static boolean remove(String orderShopNum) {
   boolean flag = false;
   Order thisOrder = null;
   if (StringUtils.isNotBlank(orderShopNum)) {
     orderShopNum = orderShopNum.trim();
     for (Order order : orderList) {
      String orderNum = order.getOrderShopNum();
      if (orderNum.equals(orderShopNum)) {
        thisOrder = order;
      }
     }
     if (thisOrder != null) {
      flag = orderList.remove(thisOrder);
     }
   }
   return flag;
  }
  /**
  * 获取订单的过期剩余时间
  * 
  * @author grl
  * @param orderShopNum
  * @param unit
  * @return -1 已经过期
  */
  public static long getDelay(String orderShopNum) {
   long time = -1;
   if (StringUtils.isNotBlank(orderShopNum)) {
     orderShopNum = orderShopNum.trim();
     for (Order order : orderList) {
      String orderNum = order.getOrderShopNum();
      if (orderNum.equals(orderShopNum)) {
        time = order.getDelay(TimeUnit.MILLISECONDS);
        if(time<5000) {
         time = -1;
        }
      }
     }
   }
   return time;
  }
}
 

/**
 * 类说明
 *
 * @author grl
 * @date 2019年12月16日 新建
 */
@Component
public class CancellOrder implements Runnable {
  private static final Logger log = LoggerFactory.getLogger(CancellOrder.class);
  @Override
  public void run() {
   while (true) {
     try {
      Order take = OrderCollection.getOrderCollection().take();
      String orderShopNum = take.getOrderShopNum();
      int orderType = take.getOrderType();
      // 业务逻辑操作
     } catch (InterruptedException e) {
      e.printStackTrace();
      log.error("CancellOrder DelayQueue 错误 {}", e.getMessage());
     }
   }
  }
}