增强for循环卡住 cannot find local variable list

Question

增强for循环遍历一个从数据库查出来的集合，会卡住，就是一进去就会卡住，然后debug调试报错：cannot find local variable list
请求解惑呀，第一次遇见这种问题：
一下是代码

    @Scheduled(cron = "0/20 * * * * ?")
    public void test() throws ParseException {
      //报错在下面检查计量处
        System.out.println("定时任务开启");
        //检查证件是否临期
        List<SelCertTimeDto> selCertTimeDtos = facilityInfoDao.selCertTime();
        ArrayList<CardEarlyInfo> cardEarlyInfos = new ArrayList<>();
        for (SelCertTimeDto message : selCertTimeDtos) {
            System.out.println("检查证件");  
            CardEarlyInfo cardEarlyInfo = BeanCopyUtil.copyObject(message, CardEarlyInfo.class);
            //证件状态  键为证件类型 0注册证 1许可证 2合格证 1，值为状态 0设备临期，1设备超期
            //注册证
            if(message.getRegisterEndTime().before(new Date())){//超期了  注册证号   注册证有效期截止在当前日期之前
                cardEarlyInfo.setEarlyTime(new Date());
                cardEarlyInfo.setState(1);
                cardEarlyInfos.add(cardEarlyInfo);
                continue;
            }else {
                long time = message.getRegisterEndTime().getTime();//到期时间
                long time1 = new Date().getTime();
                long l = (time - time1) / (1000L * 60 * 60 * 24);
                if(l<30){
                    cardEarlyInfo.setEarlyTime(new Date());
                    cardEarlyInfo.setState(0);
                    cardEarlyInfos.add(cardEarlyInfo);
                    continue;
                }
            }
//
//            //许可证
            if(message.getProductionEndTime().before(new Date())){//超期了  注册证号
                cardEarlyInfo.setEarlyTime(new Date());
                cardEarlyInfo.setState(1);
                cardEarlyInfos.add(cardEarlyInfo);
                continue;
            }else {
                long time = message.getProductionEndTime().getTime();//到期时间
                long time1 = new Date().getTime();
                long l = (time - time1) / (1000L * 60 * 60 * 24);
                if(l<30){
                    cardEarlyInfo.setEarlyTime(new Date());
                    cardEarlyInfo.setState(0);
                    cardEarlyInfos.add(cardEarlyInfo);
                    continue;
                }
            }
//            //合格证
            if(message.getQualifiedEndTime().before(new Date())){//超期了  注册证号
                cardEarlyInfo.setEarlyTime(new Date());
                cardEarlyInfo.setState(1);
                cardEarlyInfos.add(cardEarlyInfo);
                continue;
            }else {
                long time = message.getQualifiedEndTime().getTime();//到期时间
                long time1 = new Date().getTime();
                long l = (time - time1) / (1000L * 60 * 60 * 24);
                if(l<30){
                    cardEarlyInfo.setEarlyTime(new Date());
                    cardEarlyInfo.setState(0);
                    cardEarlyInfos.add(cardEarlyInfo);
                    continue;
                }
            }
        }
  List<CheckEarlyDto> checkEarlyInfos = facilityDetailInfoDao.checkEarly();
        SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd");
        List<CheckEarlyInfo> list = new ArrayList<>();
        for (CheckEarlyDto info : checkEarlyInfos) {
            System.out.println("检查计量"); //代码在这里卡住不报错，debug才可以看见报错信息

            String checkTime = info.getCheckTime();
            if(checkTime==null){
                checkTime=info.getAllocateTime();
            }
            Date parse = sd.parse(checkTime);
            //下一次检查日期
            Date nextCheckTime = DateUtil.getNextMonthDate(sd.parse(info.getCheckTime()), info.getFacilityCheckPeriod() == 0 ? 1 : (info.getFacilityCheckPeriod() == 1 ? 3 : 12));
            CheckEarlyInfo checkEarlyInfo = BeanCopyUtil.copyObject(info, CheckEarlyInfo.class);

            if(nextCheckTime.before(new Date())){//超期
                checkEarlyInfo.setState(1);
                checkEarlyInfo.setEarlyTime(new Date());
                list.add(checkEarlyInfo);
            }else{
                long time = new Date().getTime();
                long time1 = nextCheckTime.getTime();
                long l = (time1 - time) / (1000L * 60 * 60 * 24);//求出剩余天数
                if(l<30){
                    checkEarlyInfo.setState(0);
                    checkEarlyInfo.setEarlyTime(new Date());
                    list.add(checkEarlyInfo);
                }
            }
            System.out.println("list");

        }
        //保存计量预警
        if(list.size()!=0){
            System.out.println("保存计量预警");
            checkEarlyInfoService.saveBatch(list);
        }

Answer 1

cannot find local variable list 这个一般是debug模式才会出现的，并不是你真正的问题，你最好是try catch 一下整段代码看看有没有哪里抛出异常