前言：

上星期做了一個Excel的單元格合併，用的是EasyPoi，我之前合併單元格都是原生的，第一次使用EasyPoi合併也不太熟悉，看著網上自己套用，使用後發現比原生的方便些，貢獻一下，也給其他用到合併而且用的是EasyPoi的小夥伴節省下時間。

匯出模板：

座標：

版本號，自己來定，可以去官網檢視：EasyPoi官網

<!-- easypoi 匯入包 -->
    <dependency>
      <groupId>cn.afterturn</groupId>
      <artifactId>easypoi-base</artifactId>
      <version>4.0.0</version>
    </dependency>

    <dependency>
      <groupId>cn.afterturn</groupId>
      <artifactId>easypoi-annotation</artifactId>
      <version>4.0.0</version>
    </dependency>

實現程式碼：

 //表頭設定
        List<ExcelExportEntity> colList = new ArrayList<ExcelExportEntity>();

        ExcelExportEntity colEntity = new ExcelExportEntity("經銷商","distributorName");
        colEntity.setNeedMerge(true);
        colEntity.setWidth(20);
        colList.add(colEntity);

        colEntity = new ExcelExportEntity("科室","dept");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);

        colEntity = new ExcelExportEntity("部門","region");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);

        colEntity = new ExcelExportEntity("省份","province");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);

        colEntity = new ExcelExportEntity("門店數量","storeNum");
        colEntity.setNeedMerge(true);
        colEntity.setStatistics(true);
        colList.add(colEntity);
        Map<String,Integer> map = DateUtils.getLastDayOfMonthByStr(request.getMonthStr());
        Integer dayNum = map.get("dayNum");

        for (int i = 1; i <= dayNum; i++) {
          ExcelExportEntity group_1 = new ExcelExportEntity(i + "日","day");
          List<ExcelExportEntity> exportEntities = new ArrayList<>();
          ExcelExportEntity appalyExcel = new ExcelExportEntity("申請數量","applyNum" + i);
          appalyExcel.setStatistics(true);
          exportEntities.add(appalyExcel);
          ExcelExportEntity adoptExcel = new ExcelExportEntity("通過數量","adoptNum" + i);
          adoptExcel.setStatistics(true);
          exportEntities.add(adoptExcel);
          group_1.setList(exportEntities);
          colList.add(group_1);
        }
        //檔案資料
        List<Map<String,Object>> list = new ArrayList<>();
        List<StoreNewAddReportVO.DistributorStoreNewAddReportVO> disList = register.getStoreNewAddReportVO().getDistributorStoreNewAddReportVOList();
        int size = disList.size();
        for (int i = 0; i < size; i++) {
          StoreNewAddReportVO.DistributorStoreNewAddReportVO dis = disList.get(i);
          Map<String,Object> valMap = new HashMap<>();
          valMap.put("distributorName",dis.getDistributorName());
          valMap.put("dept",dis.getDept());
          valMap.put("region",dis.getRegion());
          valMap.put("province",dis.getProvince());
          valMap.put("storeNum",dis.getStoreNum());
          List<StoreNewAddReportVO.dayData> dayDataList = dis.getDayDataList();
          Map<String,List<StoreNewAddReportVO.dayData>> collectMap = Maps.newHashMap();
          if (CollectionUtils.isNotEmpty(dayDataList)) {
            collectMap = dayDataList.stream().collect(Collectors.groupingBy(StoreNewAddReportVO.dayData::getDayStr));
          }
          List<Map<String,Object>> list_1 = new ArrayList<>();
          Map<String,Object> valMap_1 = new HashMap<>();
          for (int j = 1; j <= dayNum; j++) {
            List<StoreNewAddReportVO.dayData> dayData = collectMap.get(String.valueOf(j));
            int applyflag = 0;
            int adoptflag = 0;
            if (CollectionUtils.isNotEmpty(dayData)) {
              applyflag = dayData.get(0).getApplyNum();
              adoptflag = dayData.get(0).getAdoptNum();
            }
            valMap_1.put("applyNum" + j,applyflag);
            valMap_1.put("adoptNum" + j,adoptflag);
          }
          list_1.add(valMap_1);
          valMap.put("day",list_1);
          list.add(valMap);
        }
        //匯出
        Workbook workbook = ExcelExportUtil.exportExcel(new ExportParams("【" + request.getMonthStr() + "】門店註冊日明細資料","資料"),colList,list);
        Sheet sheet = workbook.getSheet("資料");
        Row row = sheet.getRow(sheet.getLastRowNum());
        Cell cell = row.getCell(0);
        cell.setCellValue("總計");
        CellStyle cellStyle = workbook.createCellStyle();
        cellStyle.setAlignment(HorizontalAlignment.CENTER);//水平居中
        cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);//垂直居中
        Font font = workbook.createFont();
        font.setFontHeightInPoints((short) 15);
        font.setFontName("Trebuchet MS");
        cellStyle.setFont(font);
        cell.setCellStyle(cellStyle);
        CellRangeAddress range_0 = new CellRangeAddress(sheet.getLastRowNum(),sheet.getLastRowNum(),3);
        sheet.addMergedRegion(range_0);
        File file = new File("D:\\".concat(UUID.randomUUID().toString().concat(".xls")));
		    FileOutputStream fileOutputStream = null;
		    try {
		      fileOutputStream = new FileOutputStream(file);
		      workbook.write(fileOutputStream);
		    } catch (Exception e) {
		      log.error("門店註冊日workbook寫入到檔案中失敗，錯誤資訊：{}",ExceptionUtils.getStackTrace(e));
		    } finally {
		      if (null != fileOutputStream) {
		        try {
		          fileOutputStream.close();
		        } catch (IOException e) {
		          //skip
		        }
		      }
		    }

具體的API細節就不介紹了可以去官網，關鍵在於ExcelExportEntity 這個類，它是以map形式展現的，建立的時候設定key，設定value的根據key進行設定，上面一些StoreNewAddReportVO還有其他是我的業務類， 到時候可以替換掉。

到此這篇關於Java中EasyPoi匯出複雜合併單元格的方法的文章就介紹到這了,更多相關Java EasyPoi匯出單元格內容請搜尋我們以前的文章或繼續瀏覽下面的相關文章希望大家以後多多支援我們！