一、controller层

二、SERVICE层

@Override
public Result importJinjiangAssessResult(MultipartFile file) throws Exception {
    Result result = new Result();
    //1.判断获取文件是否为空
    if (ValidateUtil.isEmpty(file) || file.isEmpty()) {
        return ErrorEnum.OBJECT_LIST_ISNULL.getResult("丁博士上传文件");
    }
    String filename=file.getOriginalFilename();
 
    filename =filename.substring(filename.lastIndexOf(".")+1);
    if (!"csv".equals(filename)){
        result.setCode(1);
        result.setMsg("非csv文件，请检查！");
        return result;
    }

    //读取csv文件
    BufferedReader br = new BufferedReader(new InputStreamReader(file.getInputStream(), "GBK"));
    CSVParser parser = CSVFormat.EXCEL.withHeader("_ApplyNo", "_SurveyedName2", "QualityIndexGrade3", "EvaluatedGrade_method1").parse(br);
 
    List<CSVRecord> csvRecords = parser.getRecords();
    int size = csvRecords.size();
    if (size > 1) {
        for (int i = 1; i < size; i++) {
            String applyNo = csvRecords.get(i).get("_ApplyNo");//申请编号
            String assessResult = csvRecords.get(i).get("EvaluatedGrade_method1");//评定返回结果
 
            if (ValidateUtil.isEmpty(applyNo)) {
                result.setCode(1);
                result.setMsg("申请编号为空，请检查数据！");
                return result;
            }

            if (ValidateUtil.isEmpty(assessResult)) {
                result.setCode(1);
                result.setMsg("丁博士导入返回结果为空，请检查数据！");
                return result;
            }
            Integer adviseAssessLevel=null;

        }
    } else {
        result.setCode(1);
        result.setMsg("不能上传无数据的文件，请检查！");
        return result;
    }
    return result.ok();
}
三、按照上面的读取就可以了