quartz 防止上一任务未执行完毕，下一时间点重复执行

/**
 * 订单监控类
 * 定时扫描所有待付款订单，超时自动取消
 * Created by huangbaidong
 * 2017/3/29.
 */
@Component
public class OrderMonitorJob {

    @Resource
    private RedisUtil redisUtil;

    @Resource
    private BsdOrderService bsdOrderService;

    @Resource
    private BsdDFKOrderCacheManager bsdDFKOrderCacheManager;

    private boolean isLock = false;

    /**
     * 待付款订单定时扫描类
     * 定时扫描所有待付款订单，超时自动取消
     */
    public void paymentTimeoutScan() {
        if(!isLock) {
            //加锁，防止定时器重复执行，
            isLock = true;
            try {
                List<BsdDFKOrderCacheEntity> orders = bsdDFKOrderCacheManager.getAll();
                if (BlankUtil.isNotEmpty(orders)) {

                    List<String> removeIds = new ArrayList<>();//需要移除的订单

                    for (BsdDFKOrderCacheEntity order : orders) {

                        if (Dictionary.ORDER_STATUS_DFK == order.getOrderStatus()) {
                            boolean isExpire = false;
                            if (order.isHasPromotion() == 1) {
                                //如果是有促销规则的订单，1小时未支付，自动取消订单
                                if (System.currentTimeMillis() - order.getOrderTime().getTime() > CommonConstants.hasRulePayTimeout) {
                                    isExpire = true;
                                }
                            } else {
                                //如果是没有促销规则的订单，24小时未支付，自动取消订单
                                if (System.currentTimeMillis() - order.getOrderTime().getTime() > CommonConstants.hasNotRulePayTimeout) {
                                    isExpire = true;
                                }
                            }
                            if (isExpire) {

                                //1、自动取消订单(操作人ID传0)
                                bsdOrderService.cancel(order.getId(), 0l);

                                //2、记录过期的订单，将订单从缓存中清除
                                removeIds.add(order.getId().toString());

                                System.out.println("------>订单[" + order.getCode() + "]超时未付款自动取消订单");
                            }
                        } else {
                            //不是待付款状态的订单，记录从缓存中清除
                            removeIds.add(order.getId().toString());
                        }
                    }

                    //将不是待支付状态的订单，以及过期的未支付的订单从缓存中删除
                    if (BlankUtil.isNotEmpty(removeIds)) {
                        bsdDFKOrderCacheManager.removeFromCache(removeIds);
                    }
                }
            } finally {
                //运行完后释放锁
                isLock = false;
            }
        }
    }

}

/**
 * 订单监控类
* 定时扫描所有待付款订单，超时自动取消
* Created by huangbaidong
 * 2017/3/29.
 */
@Component
public class OrderMonitorJob {

    @Resource
private RedisUtil redisUtil;

    @Resource
private BsdOrderService bsdOrderService;

    @Resource
private BsdDFKOrderCacheManager bsdDFKOrderCacheManager;

    private boolean isLock = false;

    /**
     * 待付款订单定时扫描类
* 定时扫描所有待付款订单，超时自动取消
*/
public void paymentTimeoutScan() {
        if(!isLock) {
            //加锁，防止定时器重复执行，
isLock = true;
            try {
                List<BsdDFKOrderCacheEntity> orders = bsdDFKOrderCacheManager.getAll();
                if (BlankUtil.isNotEmpty(orders)) {

                    List<String> removeIds = new ArrayList<>();//需要移除的订单

for (BsdDFKOrderCacheEntity order : orders) {

                        if (Dictionary.ORDER_STATUS_DFK == order.getOrderStatus()) {
                            boolean isExpire = false;
                            if (order.isHasPromotion() == 1) {
                                //如果是有促销规则的订单，1小时未支付，自动取消订单
if (System.currentTimeMillis() - order.getOrderTime().getTime() > CommonConstants.hasRulePayTimeout) {
                                    isExpire = true;
                                }
                            } else {
                                //如果是没有促销规则的订单，24小时未支付，自动取消订单
if (System.currentTimeMillis() - order.getOrderTime().getTime() > CommonConstants.hasNotRulePayTimeout) {
                                    isExpire = true;
                                }
                            }
                            if (isExpire) {

                                //1、自动取消订单(操作人ID传0)
bsdOrderService.cancel(order.getId(), 0l);

                                //2、记录过期的订单，将订单从缓存中清除
removeIds.add(order.getId().toString());

                                System.out.println("------>订单[" + order.getCode() + "]超时未付款自动取消订单");
                            }
                        } else {
                            //不是待付款状态的订单，记录从缓存中清除
removeIds.add(order.getId().toString());
                        }
                    }

                    //将不是待支付状态的订单，以及过期的未支付的订单从缓存中删除
if (BlankUtil.isNotEmpty(removeIds)) {
                        bsdDFKOrderCacheManager.removeFromCache(removeIds);
                    }
                }
            } finally {
                //运行完后释放锁
isLock = false;
            }
        }
    }

}