EasyPoi导出导入

• 一.引入EasyPoi依赖
• 二.导出示例(合并单元格)
• • 1.导出模板
  • 2.实体类加注释
  • 3.编写逻辑
• 二.导入示例

一.引入EasyPoi依赖

 <dependency>         <groupId>cn.afterturngroupId>         <artifactId>easypoi-baseartifactId>         <version>3.2.0version>     dependency>      <dependency>         <groupId>cn.afterturngroupId>         <artifactId>easypoi-webartifactId>         <version>3.2.0version>     dependency>     <dependency>         <groupId>cn.afterturngroupId>         <artifactId>easypoi-annotationartifactId>         <version>3.2.0version>     dependency>

二.导出示例(合并单元格)

1.导出模板

2.实体类加注释

@Excel(name = "真爱粉", width = 15)private String heizi;@Excel(name = "唱", width = 15)private String chang;@Excel(name = "跳", width = 15)private String tiao;@Excel(name = "rap", width = 15)private String rap;@Excel(name = "篮球", width = 15)private String qiu;

3.编写逻辑

  public void exportXls(KunKun ikun, HttpServletResponse response) {        //查询导出的信息列表        List<KunKun> ikuns = kunKunMapper.allList(ikun);                //存放excel的表头 ExcelExportEntity是EasyPoi提供的excel属性实体类        List<ExcelExportEntity> entityList = new ArrayList<ExcelExportEntity>();                //表头        ExcelExportEntity title = new ExcelExportEntity("序号","num");        entityList.add(title);        //真爱粉对应key，heizi对应的是表头也是你实体类的字段        title = new ExcelExportEntity("真爱粉","heizi");        entityList.add(title);        //合并坤坤单元格        ExcelExportEntity groupOne = new ExcelExportEntity("坤坤", "kunkun");        List<ExcelExportEntity> exportEntitieOne = new ArrayList<>();        exportEntitieOne.add(new ExcelExportEntity("唱","chang"));        exportEntitieOne.add(new ExcelExportEntity("跳","tiao"));        exportEntitieOne.add(new ExcelExportEntity("rap","rap"));        exportEntitieOne.add(new ExcelExportEntity("篮球","qiu"));        groupOne.setList(exportEntitieOne);        entityList.add(groupOne);        //存放全部的数据        List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();        //定义序号        int num = 1;        for (KunKun ikun: ikuns) {            //存放坤坤表头下的数据           List<Map<String, Object>> listOne = new ArrayList<Map<String, Object>>();            Map<String, Object> map = new HashMap<>();            Map<String, Object> mapOne = new HashMap<>();            map.put("num",num++);            map.put("heizi",ikun.getHeizi());            mapOne.put("chang",ikun.getChang());            mapOne.put("tiao",ikun.getTiao());            mapOne.put("rap",ikun.getRap());            mapOne.put("qiu",ikun.getQiu());            listOne.add(mapOne);            map.put("kunkun",listOne);            list.add(map);        }        //获取当前时间        String date = LocalDate.now().toString();        String fileName = date + "坤坤记录导出";        //ExcelExportUtil是EasyPoi提供的导出工具类。        //参数对应：导出文件名字、表头、对应的数据        Workbook workbook = ExcelExportUtil.exportExcel(new ExportParams(fileName, "sheet1"), entityList, list);        try {            workbook.write(response.getOutputStream());        } catch (IOException e) {            e.printStackTrace();        }finally {            try {                workbook.close();                response.getOutputStream().close();            } catch (IOException e) {                e.printStackTrace();            }        }    }

二.导入示例

public Result<?> importExcel(MultipartFile file) {        String extNane = FileUtil.getSuffix(file.getOriginalFilename());        if (!"xls,xlsx".contains(extNane)){            return Result.error("请选择Excel文件！");        }        ExcelReader reader = null;        try {            reader = ExcelUtil.getReader(file.getInputStream());        } catch (IOException e) {            e.printStackTrace();        }        //从第2行开始读取数据(0开始计数)        List<List<Object>> readAll = reader.read(2);        if (CollectionUtils.isEmpty(readAll)){            return Result.error("数据为空，请正确填写数据后再上传！");        }        //存放导入的数据        List<KunKun> insertList = new ArrayList<>();        try{            readAll.forEach(e ->{                KunKun ikun = new KunKun();                //从1开始取，因为0列是序号列                //真爱粉                fuelSupplyStore.setHeizi(ObjectUtil.isNull(e.get(1)) ? null : ObjectUtil.toString(e.get(1)).trim());                //唱                fuelSupplyStore.setChang(ObjectUtil.isNull(e.get(2)) ? null : ObjectUtil.toString(e.get(2)).trim());                //跳                fuelSupplyStore.setTiao(ObjectUtil.isNull(e.get(3)) ? null : ObjectUtil.toString(e.get(3)).trim());                //rap                fuelSupplyStore.setRap(ObjectUtil.isNull(e.get(4)) ? null : ObjectUtil.toString(e.get(4)).trim());                //篮球                fuelSupplyStore.setQiu(ObjectUtil.isNull(e.get(5)) ? null : ObjectUtil.toString(e.get(5)).trim());        }catch (Exception ex){            return Result.error("导入失败");        }        //批量新增        kunKunMapper.saveBatch(insertList);        return Result.OK("导入成功");    }

来源地址：https://blog.csdn.net/twotwo22222/article/details/131049342