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《javapoi实现Excel多级表头导出方式(多级表头,复杂表头)》文章介绍了使用javapoi库实现Excel多级表头导出的方法,通过主代码、合并单元格、设置表头单元格宽度、填充数据、web下载...
java poi实现Excel多级表头导出(多级表头,复杂表头)
最近碰到一个导出,比较繁琐,也查询了许多博客,在其中一篇博客的基础上修改,实现了最终想要的效果。
话不多说,直接上效果图:
上代码
1.主代码
List<Map<String, Object>> convertListMap = toListConvertListMap(tableTitleList, list); // 第一步,创建一个Workbook,对应一个Excel文件 XSSFWorkbook wb = new XSSFWorkbook(); // 第二步,在Workbook中添加一个sheet,对应Excel文件中的sheet XSSFSheet sheet = wb.createSheet("sheet"); // 第三步,设置样式以及字体样式 XSSFCellStyle titleStyle = createTitleCellStyle(wb); XSSFCellStyle headerStyle = createHeadCellStyle(wb); XSSFCellStyle contentStyle = createContentCellStyle(wb); // 行号 int rowNum = 0; // 创建第一页的第一行,索引从0开始 XSSFRow row0 = sheet.createRow(rowNum++); row0.setHeight((short) 600);// 设置行高 sheet.setColumnWidth(2, 8000); sheet.setColumnWidth(3, 8000); //第二行 XSSFRow row2 = sheet.createRow(rowNum++); row2.setHeight((short) 700); // todo: 第三行 XSSFRow row3 = sheet.createRow(rowNum++); row3.setHeight((short) 700); String[] row_one = null; String[] row_two = null; String[] row_three = null; int cellSize = 0; if (tableTitleList.size() == 2) { // 全部 row_one = new String[]{"序号", "所属模块", "单位名称", "情况统计", "合计", "", "", "测试类型A", "", "", "", "", "", "", "", "", "", "", "", "测试类型B", "", "", "", "", "", "", "", "", "", "", "",}; row_two = new String[]{"", "", "", "", "合计A", "合计B", "合计C", "测试类型A1", "", "", "", "测试类型A2", "", "", "", "测试类型A3", "", "", "", "测试类型B1", "", "", "", "测试类型B2", "", "", "", "测试类型B3", "", "", ""}; row_three = new String[]{"", "", "", "", "", "", "", "起床", "洗漱", "吃饭", "上班", "起床", "洗漱", "吃饭", "上班", "起床", "洗漱", "吃饭", "上班", "起床", "洗漱", "吃饭", "上班", "起床", "洗漱", "吃饭", "上班", "起床", "洗漱", "吃饭", "上班",}; // 合并单元格 extracted(sheet); } // 创建第一行单元格 for (int i = 0; i < row_one.length; i++) { XSSFCell c00 = row0.createCell(i); c00.setCellValue(row_one[i]); c00.setCellStyle(headewww.chinasem.cnrStyle); } // 创建第二行单元格 for (int i = 0; i < row_two.length; i++) { XSSFCell tempCell = row2.createCell(i); tempCell.setCellValue(row_two[i]); tempCell.setCellStyle(headerStyle); } // 创建第三行单元格 for (int i = 0; i < row_three.length; i++) { XSSFCell tempCell = row3.createCell(i); tempCell.setCellValue(row_three[i]); tempCell.setCellStyle(headerStyle); } // 设置表头单元格的宽度 tableTitleStyleColumnwidth(sheet); // todo: 填充数据 approvalMethodfillInData(convertListMap, sheet, contentStyle, rowNum, row_three, tableTitleList); // approvalMethodfillInData(convertListMap, sheet, contentStyle, rowNum, cellSize, tableTitleList); //导出到浏览器下载 buildExcelDocument("监测数据.xlsx", wb, response);
2.合并单元格
private static void extracted(XSSFSheet sheet) { // todo: 合并参数分别为: 起始行,结束行,起始列,结束列 // 将第一列 的 第一行到第三行合并 sheet.addMergedRegion(new CellRangeAddress(0, 2, 0, 0)); // 将第二列的 第一行到第三行合并 sheet.addMergedRegion(new CellRangeAddress(0, 2, 1, 1)); // 将第三列的 第一行到第三行合并 sheet.addMergedRegion(new CellRangeAddress(0, 2, 2, 2)); sheet.addMergedRegion(new CellRangeAddress(0, 2, 3, 3)); // 合计 sheet.addMergedRegion(new CellRangeAddress(0, 0, 4, 6)); // 合计下的单元格 sheet编程.addMergedRegion(new CellRangeAddress(1, 2, 4, 4)); sheet.addMergedRegion(new CellRangeAddress(1, 2, 5, 5)); sheet.addMergedRegion(new CellRangeAddress(1, 2, 6, 6)); sheet.addMergedRegion(new CellRangeAddress(0, 0, 7, 18)); sheet.addMergedRegion(new CellRangeAddress(0, 0, 19, 30)); sheet.addMergedRegion(new CellRangeAddress(1, 1, 7, 10)); sheet.addMergedRegion(new CellRangeAddress(1, 1, 11, 14)); sheet.addMergedRegion(new CellRangeAddress(1, 1, 15, 18)); sheet.addMergedRegion(new CellRangeAddress(1, 1, 19, 22)); sheet.addMergedRegion(new CellRangeAddress(1, 1, 23, 26)); sheet.addMergedRegion(new CellRangeAddress(1, 1, 27, 30)); }
3.设置表头单元格的宽度
private static void tableTitleStyleColumnwidth(XSSFSheet sheet) { sheet.setColumnWidth(2, 8000); sheet.setColumnWidthjavascript(3, 8000); sheet.setColumnWidth(7, 3000); sheet.setColumnWidth(8, 3000); sheet.setColumnWidth(9, 3000); sheet.setColumnWidth(10, 3000); sheet.setColumnWidth(11, 3000); sheet.setColumnWidth(12, 3000); sheet.setColumnWidth(13, 3000); sheet.setColumnWidth(14, 3000); sheet.setColumnWidth(15, 3000); sheet.setColumnWidth(16, 3000); sheet.setColumnWidth(17, 3000); sheet.setColumnWidth(18, 3000); sheet.setColumnWidth(19, 3000); sheet.setColumnWidth(20, 3000); sheet.setColumnWidth(21, 3000); sheet.setColumnWidth(22, 3000); sheet.setColumnWidth(23, 3000); sheet.setColumnWidth(24, 3000); sheet.setColumnWidth(25, 3000); sheet.setColumnWidth(26, 3000); sheet.setColumnWidth(27, 3000); sheet.setColumnWidth(28, 3000); sheet.setColumnWidth(29, 3000); sheet.setColumnWidth(30, 3000); }
4.填充数据
(注:我这里的数据格式是List<Map<String, Object>>类型,可以根据自己的实际情况来封装数据)
private static void approvalMethodfillInData(List<Map<String, Object>> convertListMap, XSSFSheet sheet, XSSFCellStyle contentStyle, int rowNum, String[] cellSize, List<Object> tableTitleList) {
for (Map<String, Object> map : convertListMap) {
XSSFRow tempRow = sheet.createRow(rowNum++);
tempRow.setHeight((short) 500);
// 判断选择类型
if (tableTitleList.size() == 2 || "enterprise".equals(tableTitleList.get(0).toString())) {
// 循环单元格填入数据
for (int i = 0; i < cellSize.length; i++) {
//列宽自适应,j为自适应的列,true就是自适应,false就是不自适应,默认不自适应
sheet.autoSizeColumn(i, true);
XSSFCell tempCell = tempRow.createCell(i);
tempCell.setCellStyle(contentStyle);
String tempValue = "";
switch (i) {
case 0:
tempValue = map.get("indexNum").toString();
break;
case 1:
tempValue = map.get("platName").toString();
break;
case 2:
tempValue = map.get("deptName").toString();
break;
case 3:
tempValue = map.get("type").toString();
break;
case 4:
tempValue = map.get("totalProNum").toString();
break;
case 5:
tempValue = map.get("totalBidNum").toString();
break;
case 6:
tempValue = map.get("totalAmount").toString();
break;
case 7:
tempValue = map.get("enterpriseEngineeringProNum").toString();
break;
case 8:
tempValue = map.get("enterpriseEngineeringBidNum").toString();
break;
case 9:
tempValue = map.get("enterprisePurchaseAmount").toString();
javascript break;
case 10:
tempValue = map.get("planEnterprisePurchaseAmount").toString();
break;
case 11:
tempValue = map.get("enterprisePurchaseProNum").toString();
break;
case 12:
tempValue = map.get("enterprisePurchaseBidNum").toString();
break;
case 13:
tempValue = map.get("enterprisePurchaseAmount").toString();
break;
case 14:
tempValue = map.get("planEnterprisePurchaseAmount").toString();
break;
case 15:
tempValue = map.get("enterpriseServiceProNum").toString();
break;
case 16:
tempValue = map.get("enterpriseServiceBidNum").toString();
break;
case 17:
tempValue = map.get("enterpriseServiceAmount").toString();
break;
case 18:
tempValue = map.get("planEnterpriseServiceAmount").toString();
break;
case 19:
tempValue = map.get("groupEngineeringProNum").toString();
break;
case 20:
tempValue = map.get("grouppurchaseBidNum").toString();
break;
case 21:
tempValue = map.get("groupPurchaseAmount").toString();
break;
case 22:
tempValue = map.get("palnGroupPurchaseAmount").toString();
break;
case 23:
tempValue = map.get("groupPurchaseProNum").toString();
break;
case 24:
tempValue = map.get("groupEngineeringBidNum").toString();
break;
case 25:
tempValue = map.get("groupEngineeringAmount").toString();
break;
case 26:
tempValue = map.get("planGroupEngineeringAmount").toString();
break;
case 27:
tempValue = map.get("groupServiceProNum").toString();
break;
case 28:
tempValue = map.get("groupServiceBidNum").toString();
break;
case 29:
tempValue = map.get("groupServiceAmount").toString();
break;
case 30:
tempValue = map.get("planGroupServiceAmount").toString();
break;
}
tempCell.setCellValue(tempValue);
}
}
}
5.web下载,导出到浏览器
private static void buildExcelDocument(String fileName, Workbook wb, HttpServletResponse response) { try { response.setContentType("application/octet-stream"); // 可自行定义编码格式 response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "utf-8")); //清除JSP编译html文件的空白,防止excel出现空行 response.flushBuffer(); //写出 wb.write(response.getOutputStream()); } catch (IOException e) { e.printStackTrace(); } finally { IOUtils.closeQuietly(wb); } }
6.提供表头样式,内容样式以及标题样式
/**
* 创建标题样式
*
* @param wb
* @return
*/
private static XSSFCellStyle createTitleCellStyle(XSSFWorkbook wb) {
XSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setAlignment(HorizontalAlignment.CENTER);//水平居中
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);//垂直对齐
cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
// cellStyle.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());//背景颜色
XSSFFont headerFont1 = (XSSFFont) wb.createFont(); // 创建字体样式
headerFont1.setBold(true); //字体加粗
headerFont1.setFontName("黑体"); // 设置字体类型
headerFont1.setFontHeightInPoints((short) 15); // 设置字体大小
cellStyle.setFont(headerFont1); // 为标题样式设置字体样式
return cellStyle;
}
/**
* 创建表头样式
*
* @param wb
* @return
*/
private static XSSFCellStyle createHeadCellStyle(XSSFWorkbook wb) {
XSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setWrapText(true);// 设置自动换行
cellStyle.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());//背景颜色
cellStyle.setAlignment(HorizontalAlignment.CENTER); //水平居中
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER); //垂直对齐
cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
// cellStyle.setBottomBorderColor(IndexedColors.BLACK.index);
cellStyle.setBorderBottom(BorderStyle.THIN); //下边框
cellStyle.setBorderLeft(BorderStyle.THIN); /编程/左边框
cellStyle.setBorderRight(BorderStyle.THIN); //右边框
cellStyle.setBorderTop(BorderStyle.THIN); //上边框
XSSFFont headerFont = (XSSFFont) wb.createFont(); // 创建字体样式
headerFont.setBold(true); //字体加粗
headerFont.setFontName("黑体"); // 设置字体类型
headerFont.setFontHeightInPoints((short) 12); // 设置字体大小
cellStyle.setFont(headerFont); // 为标题样式设置字体样式
return cellStyle;
}
/**
* 创建内容样式
*
* @param wb
* @return
*/
private static XSSFCellStyle createContentCellStyle(XSSFWorkbook wb) {
XSSFCellStyle cellStyle = wb.createCellStyle();
cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);// 垂直居中
cellStyle.setAlignment(HorizontalAlignment.CENTER);// 水平居中
cellStyle.setWrapText(true);// 设置自动换行
cellStyle.setBorderBottom(BorderStyle.THIN); //下边框
cellStyle.setBorderLeft(BorderStyle.THIN); //左边框
cellStyle.setBorderRight(BorderStyle.THIN); //右边框
cellStyle.setBorderTop(BorderStyle.THIN); //上边框
// 生成12号字体
XSSFFont font = wb.createFont();
font.setColor((short) 8);
font.setFontHeightInPoints((short) 12);
cellStyle.setFont(font);
return cellStyle;
}
到此,大功告成!
总结
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