JAVA 使用POI实现单元格行合并

POI实现单元格行合并

• 实现效果
• 引入jar
• 代码实现
• • controller层
  • Service层
  • ServiceImpl层实现类

    实现效果

    如果最后面的三行数据大于1时 那么前面十二行就需要行合并

    引入jar

                     org.apache.poi                poi-ooxml                5.2.2            

    代码实现

    controller层

    @PostMapping(value = "getExcel")    public  void getExcel(@RequestBody BrucellosisListDTO brucellosisListDTO, HttpServletRequest request, HttpServletResponse response){        businessTaskBrucellosisService.getExcel(brucellosisListDTO,request,response);    }

    Service层

    void getExcel(BrucellosisListDTO brucellosisListDTO, HttpServletRequest request, HttpServletResponse response);

    ServiceImpl层实现类

    @Override    public void getExcel(BrucellosisListDTO brucellosisListDTO, HttpServletRequest request, HttpServletResponse response) {        //数据来源        List list = queryExcelList(brucellosisListDTO);        //数据来源 通过参数传入        String[] masterHead = {"姓名","养殖户类型","手机号码","人口数","所在区域(省)","所在区域(市)","所在区域(区/县)","所在区域(乡镇)","所在区域(乡村)","防疫负责人","养殖总数","布病人数"};        String[] childHead = {"布病人员","布病人手机号码","布病人身份证号码"};        int[] widthColumn = new int[]{20,20,25,15,30,30,30,20,30,30,20,15,25,50,50,50};        //创建Excel工作薄对象        XSSFWorkbook workbook=new XSSFWorkbook();        //创建Excel工作表对象        Sheet sheet = workbook.createSheet("布病人员统计");       //设置单元格居中        CellStyle cellStyle = workbook.createCellStyle();        //设置边框样式        cellStyle.setAlignment(HorizontalAlignment.CENTER);        cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);// 上下居中        //创建行的单元格，从0开始        Row row = sheet.createRow(0);        //创建统计单元格        Cell masterCell=row.createCell(0);        //设置第一个表头样式        CellStyle cellStyleHead = workbook.createCellStyle();        cellStyleHead.setAlignment(HorizontalAlignment.CENTER);        cellStyleHead.setVerticalAlignment(VerticalAlignment.CENTER);        cellStyleHead.setBorderBottom(BorderStyle.THIN);        cellStyleHead.setBorderLeft(BorderStyle.THIN);        cellStyleHead.setBorderRight(BorderStyle.THIN);        cellStyleHead.setBorderTop(BorderStyle.THIN);        cellStyleHead.setFillForegroundColor(IndexedColors.LIGHT_TURQUOISE.getIndex());        cellStyleHead.setFillPattern(FillPatternType.SOLID_FOREGROUND);        //赋值        masterCell.setCellValue("养殖户布病人员基本信息统计");        masterCell.setCellStyle(cellStyleHead);        //合并列        CellRangeAddress region = new CellRangeAddress(0, 0, 0, (masterHead.length+childHead.length-1));        sheet.addMergedRegion(region);        row.setHeight((short) (3*200));        // 设置列宽        for (int i = 0; i 1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 0, 0);                    sheet.addMergedRegion(region);                }                Cell farmerTypeNameCell = valueRow.createCell(1);                farmerTypeNameCell.setCellStyle(cellStyle);                farmerTypeNameCell.setCellValue(key.getFarmerTypeName());                if (chlist.size()>1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 1, 1);                    sheet.addMergedRegion(region);                }                Cell farmerPhoneCell = valueRow.createCell(2);                farmerPhoneCell.setCellStyle(cellStyle);                farmerPhoneCell.setCellValue(key.getFarmerPhone());                if (chlist.size()>1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 2, 2);                    sheet.addMergedRegion(region);                }                Cell populationCell = valueRow.createCell(3);                populationCell.setCellStyle(cellStyle);                populationCell.setCellValue(key.getPopulation());                if (chlist.size()>1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 3, 3);                    sheet.addMergedRegion(region);                }                Cell provinceNameCell = valueRow.createCell(4);                provinceNameCell.setCellStyle(cellStyle);                provinceNameCell.setCellValue(key.getProvinceName());                if (chlist.size()>1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 4, 4);                    sheet.addMergedRegion(region);                }                Cell cityNameCell = valueRow.createCell(5);                cityNameCell.setCellStyle(cellStyle);                cityNameCell.setCellValue(key.getCityName());                if (chlist.size()>1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 5, 5);                    sheet.addMergedRegion(region);                }                Cell areaNameCell = valueRow.createCell(6);                areaNameCell.setCellStyle(cellStyle);                areaNameCell.setCellValue(key.getAreaName());                if (chlist.size()>1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 6, 6);                    sheet.addMergedRegion(region);                }                Cell townNameCell = valueRow.createCell(7);                townNameCell.setCellStyle(cellStyle);                townNameCell.setCellValue(key.getTownshipName());                if (chlist.size()>1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 7, 7);                    sheet.addMergedRegion(region);                }                Cell streetNameCell = valueRow.createCell(8);                streetNameCell.setCellStyle(cellStyle);                streetNameCell.setCellValue(key.getStreetName());                if (chlist.size()>1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 8, 8);                    sheet.addMergedRegion(region);                }                Cell personInChargeNameCell = valueRow.createCell(9);                personInChargeNameCell.setCellStyle(cellStyle);                personInChargeNameCell.setCellValue(key.getPersonInChargeName());                if (chlist.size()>1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 9, 9);                    sheet.addMergedRegion(region);                }                Cell animalNumCell = valueRow.createCell(10);                animalNumCell.setCellStyle(cellStyle);                animalNumCell.setCellValue(key.getAnimalNum());                if (chlist.size()>1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 10, 10);                    sheet.addMergedRegion(region);                }                Cell bruNumCell = valueRow.createCell(11);                bruNumCell.setCellStyle(cellStyle);                bruNumCell.setCellValue(key.getBruNum());                if (chlist.size()>1){ //子表数量大于1才进行 行合并                    region=new CellRangeAddress(lastRowIndex, lastRowIndex+chlist.size()-1, 11, 11);                    sheet.addMergedRegion(region);                }                for (int i = 0; i  
    备注： 由于我这里要合并的列比较多而且牵扯到每一列都不同，所以使用了一行一行去校验和合并的方法；当然 如果需要合并的就只有一行 可以在 excelPoi的第二个for循环里面使用循环合并的方式。