主要实现一个上传Excel读取数据的Controller的实现java的代码逻辑

1、代码实现前端上传Excel文件的一个功能模块

@RequestMapping(value = "/uploadexcel", method = RequestMethod.POST)
    public CorResponse uploadExcel(@RequestParam("file") MultipartFile file, @RequestParam String eventCode) throws Exception {
        CorResponse response = CorResponseBuilder.newSuccessResponse();
        if (!FileCheckUtils.checkFileName(file.getOriginalFilename())) {
            response = CorResponseBuilder.newErrorResponse(new CorException("不是规范的Excel文件，请检查"));
            response.setMsg("不是规范的Excel文件，请检查");
            return response;
        }
        InputStream is = null;
        Workbook workbook = null;
        try {
            is = file.getInputStream();
        } catch (IOException e) {
            e.printStackTrace();
            response = CorResponseBuilder.newErrorResponse(e);
        }
        workbook = new XSSFWorkbook(is);
        Sheet sheet = workbook.getSheetAt(0);
        List<TagVo> eventTagProcessVos = Lists.newArrayList();
        int minRowIx = 1;// 从第二行开始算
        int maxRowIx = sheet.getLastRowNum();
        if (maxRowIx > MAX_NUM) {
            response = CorResponseBuilder.newErrorResponse(new CorException("Excel行数超过5000条，容易处理超时，请控制行数"));
            response.setMsg("Excel行数超过5000条，容易处理超时，请控制行数");
            return response;
        }
        // 行
        Integer userId = sessionService.getSessionUserId();
        for (int rowIx = minRowIx; rowIx <= maxRowIx; rowIx++) {
            TagVo TagVo = new TagVo();
            InformationVo informationVo = new InformationVo();
            Row row = sheet.getRow(rowIx);
            if (null == row) {
                continue;
            }
            if (row.getLastCellNum() == 1) {
                break;
            }
            Cell newsTitleCell = row.getCell(0);
            Cell contentCell = row.getCell(1);
            String newsTitle = "";
            String content = "";
            try {
                newsTitle = newsTitleCell.getStringCellValue().trim();
                content = contentCell.getStringCellValue().trim();
            } catch (Exception ex) {
                //文字获取失败进行跳过，格式错误排除纯数字、纯字母的情况
                continue;
            }
            informationVo.setContent(content);
            informationVo.setNewsTitle(newsTitle);
            informationVo.setCreater(userId);
            informationVo.setTagFlag(0);//未标注
            informationVo.setEventCode(eventCode);
            informationVo.setSource(1);//来源
            int count = tagFacade.countDuplication(newsTitle, eventCode, "1");
            if (count > 0) {  //跳过有重复
                continue;
            }
            int infoCount = informationFacade.countLocalInformationVo(eventCode, newsTitle);
            if (infoCount > 0) {  //跳过有重复
                continue;
            }
            String informationVoId = restTemplate.getForObject(IDURL, String.class);
            if (StringUtils.isNotBlank(informationVoId)) {
                informationVo.setId(informationVoId);
            }
            String infoId = informationFacade.saveLocalInformationVo(informationVo);
            TagVo.setEventCode(eventCode);
            TagVo.setNewsTitle(newsTitle);
            TagVo.setInfoId(infoId);
            TagVo.setTagFlag(0);
            TagVo.setSource(1);
            TagVo.setStatus(0);
            TagVo.setCreater(userId);
            TagVo.setUpdater(userId);
            String eventVoId = restTemplate.getForObject(IDURL, String.class);
            if (StringUtils.isNotBlank(eventVoId)) {
                TagVo.setId(eventVoId);
            }
            eventTagProcessVos.add(TagVo);
        }
        int size = eventTagProcessVos.size();
        if (size > 0) {
            tagFacade.batchSaveEventTagProcessVo(eventTagProcessVos);
            response.setMsg("成功保存" + eventTagProcessVos.size() + "条数据");
        } else {
            response = CorResponseBuilder.newErrorResponse(new CorException("数据出现重复不进行操作!"));
            response.setMsg("数据出现重复不进行操作!");
            return response;
        }
        return response;
    }