@Data
public class DictEeVo {
    @ExcelProperty(value = "id", index = 0)
    private Long id;
    @ExcelProperty(value = "上級(jí)id", index = 1)
    private Long parentId;
    @ExcelProperty(value = "名稱", index = 2)
    private String name;
    @ExcelProperty(value = "值", index = 3)
    private String value;
    @ExcelProperty(value = "編碼", index = 4)
    private String dictCode;
}

    @ApiOperation(value = "導(dǎo)出數(shù)據(jù)字典接口")
    @GetMapping("exportData")
    public void exportDictData(HttpServletResponse response) throws IOException {
        dictService.exportDictData(response);
    }

void exportDictData(HttpServletResponse response) throws IOException;

/**
     * 導(dǎo)出數(shù)據(jù)字典接口
     * @param response
     */
    @Override
    public void exportDictData(HttpServletResponse response) throws IOException {
        // 設(shè)置下載信息
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");
        String fileName = URLEncoder.encode("數(shù)據(jù)字典", "UTF-8").replaceAll("\\+", "%20");
        response.setHeader("Content-disposition", "attachment;filename*=" + fileName + ".xlsx");
        // 查詢數(shù)據(jù)庫(kù)
        List<Dict> dictList = baseMapper.selectList(null);
        // 將Dict轉(zhuǎn)換為DictVo
        List<DictVo> dictVoList = new ArrayList<>();
        for (Dict dict : dictList) {
            DictVo dictVo = new DictVo();
            // 將dict中的值復(fù)制到dictVo中
            BeanUtils.copyProperties(dict, dictVo);
            dictVoList.add(dictVo);
        }
        // 調(diào)用writer方法進(jìn)行寫(xiě)操作
        EasyExcel.write(response.getOutputStream(), DictVo.class).sheet("數(shù)據(jù)字典")
                .doWrite(dictVoList);
    }

    <a href="http://localhost:8202/admin/cmn/dict/exportData" target="_blank">
      <el-button type="text">
         數(shù)據(jù)導(dǎo)出
      </el-button>
    </a>

    @ApiOperation(value = "導(dǎo)入數(shù)據(jù)字典到網(wǎng)頁(yè)")
    @PostMapping("importData")
    public Result importDictData(MultipartFile file){
        dictService.importDictData(file);
        return Result.ok();
    }

void importDictData(MultipartFile file);

    @Override
    public void importDictData(MultipartFile file) {
        try {
            EasyExcel.read(file.getInputStream(), DictVo.class, new DictListener(baseMapper)).sheet().doRead();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

public class DictListener extends AnalysisEventListener<DictVo> {
    // 調(diào)用Dao
    private DictMapper dictMapper;
    public DictListener(DictMapper dictMapper) {
        this.dictMapper = dictMapper;
    }
    // 讀取Excel內(nèi)容
    @Override
    public void invoke(DictVo DictVo, AnalysisContext context) {
        // 將DictVO對(duì)象復(fù)制到Dict中
        Dict dict = new Dict();
        BeanUtils.copyProperties(DictVo, dict);
        // 將數(shù)據(jù)添加到數(shù)據(jù)庫(kù)
        dictMapper.insert(dict);
    }
    @Override
    public void doAfterAllAnalysed(AnalysisContext context) {
    }
}