V2EX lcq 的所有回复第 1 页 / 共 2 页

V2EX = way to explore

V2EX 是一个关于分享和探索的地方

现在注册

已注册用户请登录

1 2

2022-09-21 23:51:00 +08:00

回复了 JerAxxxx 创建的主题求职 [深圳 Java 后端] 求职

期望薪资多少

2022-08-10 18:46:48 +08:00

回复了 lcq 创建的主题程序员微服务架构，怎么输出报表的？

@thtznet 用什么搭建

2021-12-13 16:27:39 +08:00

回复了 lcq 创建的主题 Java 生成二位码后导出到 execl 缓慢，大佬有什么解决方法

List<CouponCodeExchangeListVO> list;

public ExportCouponCodeTask(List<CouponCodeExchangeListVO> list){
this.list = list;
}

@Override
public List<CouponCodExchangeListExcelVO> call() throws Exception {
log.info("执行任务");
List<CouponCodeExchangeListExcelVO> coupOnCodeExchangeListExcelVOS= new ArrayList<>();
for (CouponCodeExchangeListVO couponCodeExchangeListVO : list) {
CouponCodeExchangeListExcelVO coupOnCodeExchangeListExcelVO= new CouponCodeExchangeListExcelVO();
BeanUtils.copyProperties(couponCodeExchangeListVO, couponCodeExchangeListExcelVO);
couponCodeExchangeListExcelVO.setByteArray(generateJpg(couponCodeExchangeListVO.getQrCodeUrl(), 500, 500));
if (StringUtils.isNotBlank(couponCodeExchangeListVO.getSuWxSubscribe())){
couponCodeExchangeListExcelVO.setSuWxSubscribe(couponCodeExchangeListVO.getSuWxSubscribe().split(":")[1]);
}
if (StringUtils.isNotBlank(couponCodeExchangeListVO.getEnterpriseWechat())){
couponCodeExchangeListExcelVO.setEnterpriseWechat(couponCodeExchangeListVO.getEnterpriseWechat().split(":")[1]);
}
couponCodeExchangeListExcelVOS.add(couponCodeExchangeListExcelVO);
}
return couponCodeExchangeListExcelVOS;
}

private static byte[] generateJpg(String content, int width, int height) {
final ByteArrayOutputStream out = new ByteArrayOutputStream();
generate(content, width, height, ImgUtil.IMAGE_TYPE_JPG, out);
return out.toByteArray();
}

2021-12-13 16:27:04 +08:00

回复了 lcq 创建的主题 Java 生成二位码后导出到 execl 缓慢，大佬有什么解决方法

//获取全部数据
ResultBody<List<CouponCodeExchangeListVO>> resultBody = couponCodeFeignClientService.getListByRuleId(map.get("ruleId").toString());
List<CouponCodeExchangeListVO> records = resultBody.getData();
List<CouponCodeExchangeListExcelVO> coupOnCodeExchangeListExcelVOS= new ArrayList<>();
List<Future<List<CouponCodeExchangeListExcelVO>>> futures = new ArrayList<>();
if (CollectionUtil.isNotEmpty(records)) {
int totalNum = records.size();
int batchNum;
if (totalNum <= 1000){
batchNum = 200;
}else {
batchNum = 500;
}
int pageNum = totalNum % batchNum == 0 ? totalNum / batchNum : totalNum / batchNum + 1;
List<CouponCodeExchangeListVO> subData;
int toIndex, fromIndex;
List<ExportCouponCodeTask> tasks = new ArrayList<>();
for (int i = 0; i < pageNum; i++) {
fromIndex = i * batchNum;
toIndex = Math.min(totalNum, fromIndex + batchNum);
subData = records.subList(fromIndex, toIndex);
tasks.add(new ExportCouponCodeTask(subData));
}
//分批使用多线程处理
if(!exportCouponCodeThreadPoolExecutor.isShutdown()){
futures = exportCouponCodeThreadPoolExecutor.invokeAll(tasks);
}
}
for (Future<List<CouponCodeExchangeListExcelVO>> future : futures) {
List<CouponCodeExchangeListExcelVO> couponCodeExchangeListExcelVOS1 = future.get();
couponCodeExchangeListExcelVOS.addAll(couponCodeExchangeListExcelVOS1);
}

2021-10-20 16:14:23 +08:00

回复了 Voyty 创建的主题 MacBook Pro Macbook Pro 大家准备下单什么配置呢？最好附上你的使用场景

@bingheath 教育优惠不是只能分三期吗

2021-10-19 10:42:39 +08:00

回复了 glacial 创建的主题 MacBook Pro spring 全干工程师，选 14 寸还是 16 寸的

14 寸乞丐版 32G 感觉够了

2021-05-20 11:52:21 +08:00

回复了 lcq 创建的主题程序员各位彦祖，有什么方案在办公司断网断电的情况下，能第一时间收到通知？

@CharmingCheung 是的断电可以买 UPS 通知服务断网的话这个是怎么处理的

2021-05-20 11:24:52 +08:00

回复了 lcq 创建的主题程序员各位彦祖，有什么方案在办公司断网断电的情况下，能第一时间收到通知？

@midpoint 划水大王