POI导出复杂Excel，合并单元格（2）

/**
     *  导出excel （HSSFWorkbook）
     */
    @GetMapping("/testExport")
    public void testExport1(HttpServletResponse response)
    {
        /** 第一步，创建一个Workbook，对应一个Excel文件  */
        HSSFWorkbook wb = new HSSFWorkbook();
 
        /** 第二步，在Workbook中添加一个sheet,对应Excel文件中的sheet  */
        HSSFSheet sheet = wb.createSheet("excel导出标题");
 
        /** 第三步，设置样式以及字体样式*/
        HSSFCellStyle titleStyle = createTitleCellStyle(wb);
        HSSFCellStyle headerStyle = createHeadCellStyle(wb);
        HSSFCellStyle contentStyle = createContentCellStyle(wb);
 
        /** 第四步，创建标题 ,合并标题单元格 */
        // 行号
        int rowNum = 0;
        // 创建第一页的第一行，索引从0开始
        HSSFRow row0 = sheet.createRow(rowNum++);
        row0.setHeight((short) 800);// 设置行高
 
        String title = "excel导出标题";
        HSSFCell c00 = row0.createCell(0);
        c00.setCellValue(title);
        c00.setCellStyle(titleStyle);
        // 合并单元格，参数依次为起始行，结束行，起始列，结束列 （索引0开始）
        sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 6));//标题合并单元格操作，6为总列数
 
        // 第二行
        HSSFRow row1 = sheet.createRow(rowNum++);
        row1.setHeight((short) 500);
        String[] row_first = {"填表单位：", "", "", "", "", " 2019年第2季度 ", ""};
        for (int i = 0; i < row_first.length; i++) {
            HSSFCell tempCell = row1.createCell(i);
            tempCell.setCellStyle(headerStyle);
            if (i == 0) {
                tempCell.setCellValue(row_first[i] + "测试单位");
            } else if (i == 5) {
                tempCell.setCellStyle(headerStyle);
                tempCell.setCellValue(row_first[i]);
            } else {
                tempCell.setCellValue(row_first[i]);
            }
        }
 
        // 合并
        sheet.addMergedRegion(new CellRangeAddress(1, 1, 0, 4));
        sheet.addMergedRegion(new CellRangeAddress(1, 1, 5, 6));
 
        //第三行
        HSSFRow row2 = sheet.createRow(rowNum++);
        row2.setHeight((short) 700);
        String[] row_second = {"名称", "采集情况", "", "", "登记情况", "", "备注"};
        for (int i = 0; i < row_second.length; i++) {
            HSSFCell tempCell = row2.createCell(i);
            tempCell.setCellValue(row_second[i]);
            tempCell.setCellStyle(headerStyle);
        }
 
        // 合并
        sheet.addMergedRegion(new CellRangeAddress(2, 3, 0, 0));//名称
        sheet.addMergedRegion(new CellRangeAddress(2, 2, 1, 3));//采集情况
        sheet.addMergedRegion(new CellRangeAddress(2, 2, 4, 5));//登记情况
        sheet.addMergedRegion(new CellRangeAddress(2, 3, 6, 6));//备注
 
        //第四行
        HSSFRow row3 = sheet.createRow(rowNum++);
        row3.setHeight((short) 700);
        String[] row_third = {"", "登记数(人)", "办证总数(人)", "办证率(%)", "登记户数(户)", "签订数(份)", ""};
        for (int i = 0; i < row_third.length; i++) {
            HSSFCell tempCell = row3.createCell(i);
            tempCell.setCellValue(row_third[i]);
            tempCell.setCellStyle(headerStyle);
        }
 
        //循环每一行数据
        List<Map<String, Object>> dataList = new ArrayList<Map<String, Object>>(); //查询出来的数据
        Map<String,Object> map = new HashMap<String,Object>();
        map.put("name", "测试名称1");
        map.put("r1", "111");
        map.put("r2", "222");
        map.put("r3", "333");
        map.put("r4", "444");
        map.put("r5", "555");
        map.put("r6", "666");
        dataList.add(map);
        dataList.add(map);//加多一条list
 
        for (Map<String, Object> excelData : dataList) {
            HSSFRow tempRow = sheet.createRow(rowNum++);
            tempRow.setHeight((short) 500);
            // 循环单元格填入数据
            for (int j = 0; j < 7; j++) {
                HSSFCell tempCell = tempRow.createCell(j);
                tempCell.setCellStyle(contentStyle);
                String tempValue;
                if (j == 0) {
                    // 乡镇、街道名称
                    tempValue = excelData.get("name").toString();
                } else if (j == 1) {
                    // 登记数（人）
                    tempValue = excelData.get("r1").toString();
                } else if (j == 2) {
                    // 办证总数（人）
                    tempValue = excelData.get("r2").toString();
                } else if (j == 3) {
                    // 办证率（%）
                    tempValue = excelData.get("r3").toString();
                } else if (j == 4) {
                    // 登记户数（户）
                    tempValue = excelData.get("r4").toString();
                } else if (j == 5) {
                    // 签订数（份）
                    tempValue = excelData.get("r5").toString();
                } else {
                    // 备注
                    tempValue = excelData.get("r6").toString();
                }
                tempCell.setCellValue(tempValue);
            }
        }
 
        // 注释行
        HSSFRow remark = sheet.createRow(rowNum++);
        remark.setHeight((short) 500);
        String[] row_remark = {"注：表中的“办证率=办证总数÷登记数×100%”", "", "", "", "", "", ""};
        for (int i = 0; i < row_remark.length; i++) {
            HSSFCell tempCell = remark.createCell(i);
            if (i == 0) {
                tempCell.setCellStyle(headerStyle);
            } else {
                tempCell.setCellStyle(contentStyle);
            }
            tempCell.setCellValue(row_remark[i]);
        }
        int remarkRowNum = dataList.size() + 4;
        sheet.addMergedRegion(new CellRangeAddress(remarkRowNum, remarkRowNum, 0, 6));//注释行合并单元格
 
        // 尾行
        HSSFRow foot = sheet.createRow(rowNum++);
        foot.setHeight((short) 500);
        String[] row_foot = {"审核人：", "", "填表人：", "", "填表时间：", "", ""};
        for (int i = 0; i < row_foot.length; i++) {
            HSSFCell tempCell = foot.createCell(i);
            tempCell.setCellStyle(contentStyle);
            if (i == 0) {
                tempCell.setCellValue(row_foot[i] + "张三");
            } else if (i == 2) {
                tempCell.setCellValue(row_foot[i] + "李四");
            } else if (i == 4) {
                tempCell.setCellValue(row_foot[i] + "xxxx");
            } else {
                tempCell.setCellValue(row_foot[i]);
            }
        }
        int footRowNum = dataList.size() + 5;
        // 注
        sheet.addMergedRegion(new CellRangeAddress(footRowNum, footRowNum, 0, 1));
        sheet.addMergedRegion(new CellRangeAddress(footRowNum, footRowNum, 2, 3));
        sheet.addMergedRegion(new CellRangeAddress(footRowNum, footRowNum, 4, 6));
 
        //导出
        // HttpServletResponse response = this.getResponse();
        String fileName = "报表名称.xls";
 
        try {
            response.setCharacterEncoding("UTF-8");
            response.setHeader("content-Type", "application/vnd.ms-excel");
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
            OutputStream stream = response.getOutputStream();
            if (null != wb && null != stream) {
                wb.write(stream);// 将数据写出去
                wb.close();
                stream.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

导出结果如图