Java批量保存怎么最快 java批量操作

 

一、每次批量插入1000

// 批量操作 
	if (!CollectionUtils.isEmpty(watchOrderSubBOList)) {
                    for (WatchOrderSubscribeBO watchOrderSubscribeBO : watchOrderSubBOList) {                        list.add(watchOrderSubscribeBO);
                        if (list.size() == 1000) {
                            watchOrderSubscribeService.batchInsert(list);
                            list.clear();
                        }
                    }                    if (list.size() > 0) {
                        watchOrderSubscribeService.batchInsert(list);
                    }
                }

二、利用subList分页

// 总记录数
        int totalSize = listBO.size();
        // 每页N条
        int pageSize = page.getPageSize();
        // 第几页
        int pageNum = page.getStart() + 1;
        // 共N页
        int totalPage = totalSize % pageSize == 0 ? totalSize / pageSize : (totalSize / pageSize) + 1;
        // 起始条数
        int startNum = (pageNum - 1) * pageSize > totalSize ? 0 : (pageNum - 1) * pageSize;
        // 结束条数
        int endNum = pageNum * pageSize > totalSize ? (totalSize) : pageNum * pageSize;
        // 后端分页
        page.setDatas(listBO.subList(startNum, endNum));
        page.setTotalPage(totalPage);
        page.setTotal(totalSize);

 

三、模拟Post请求，访问web

Map<String, String> header = new HashMap<String, String>();
        header.put("Content-type", "application/json;charset=utf-8");
		header.put("appId", "1000");
        LOGGER.info("cmtoken订购鉴OTT权校验请求开始,请求地址={},请求头={},请求参数={}", authenurl, header, reqBody);
        String resp = HttpUtils.postUrlStringBody(authenurl, reqBody, header);

 

知人者智，自知者明，胜人者有力，自胜者强。