Excel高效导入

上代码

@Operation(summary = "导入手机号")
    @PostMapping("/import")
    @PreAuthorize("@ss.hasPerm('sys:user:import')")
    @Log(value = "导入手机号", module = LogModuleEnum.PHONE)
    public Result<ExcelResult> importUsers(MultipartFile file) throws IOException {
        // 分段处理数据
        long startTime = System.currentTimeMillis();
        String fileName = file.getOriginalFilename();
        int index = fileName.indexOf(".");
        String name = fileName.substring(0,index);
        List<String> listCF = uploadExcel.upLoad(file,name);
        long endTime = System.currentTimeMillis();
        System.out.println("耗时: " + (endTime - startTime) + " 毫秒");
        ExcelResult result = new ExcelResult();
        result.setMessageList(listCF);
        result.setInvalidCount(listCF.size());
        result.setValidCount(file.getSize()-listCF.size()>=0?listCF.size()-listCF.size():0);
        return Result.success(result);
    }