Java 后端导出Excel ，复杂表头
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@RequestMapping(value = "/exportXls") public void exportXls(@RequestParam String zcq,@RequestParam String ksq,HttpServletRequest request, HttpServletResponse response) throws IOException { Map<String, Object> conditionMap = new HashMap<String, Object>(); List<Map<String, Object>> grjjtdwbktjzjList = kqtjbbService.getgrjjtdwbktjzjList(conditionMap); String filename = "个人及集体单位报考统计总计"; String[] head0 = {"模块一","","","","模块二","","",""}; String[] head1 = {"区县代码","区县名称","集体单位代码","集体单位名称","集体报考人数","现场未确认人数","集体报考科次","已缴费科次"}; String[] headnum0 = new String[] { "1,1,0,3", "1,1,4,7"};//对应excel中的行和列，下表从0开始{"开始行,结束行,开始列,结束列"} String[] headnum1 = new String[] { "2,2,0,0", "2,2,1,1", "2,2,2,2","2,2,3,3","2,2,4,4","2,2,5,5","2,2,6,6","2,2,7,7"}; String[] colName = {"QXDM","QXMC","JTBKDWDM","JTBKDWMC","JTBKRSCNT","XCWQRCNT","JTBKKCCNT","YJFKCCNT"}; int[] mergeIndex = {0,1}; List<Map<String, Object>> headList = new ArrayList(); Map<String, Object> headMap0 = new HashMap<String, Object>(); headMap0.put("head", head0); headMap0.put("headnum", headnum0); headList.add(headMap0); Map<String, Object> headMap1 = new HashMap<String, Object>(); headMap1.put("head", head1); headMap1.put("headnum", headnum1); headList.add(headMap1); try { ExcelUtil.reportMergeXls(request, response, grjjtdwbktjzjList, filename, headList, colName, mergeIndex, false);//utils类需要用到的参数 } catch (Exception e) { e.printStackTrace(); } }
工具类:
package org.jeecg.common.util; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.OutputStream; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Map; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.google.api.client.util.Lists; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFFont; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.util.CellReference; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.Row; import org.apache.poi.ss.util.CellRangeAddress; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /*** * excel 导出工具类 * @author Administrator * */ public class ExcelUtil { private static DecimalFormat df = new DecimalFormat("0"); // 默认单元格格式化日期字符串 private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // 格式化数字 private static DecimalFormat nf = new DecimalFormat("0.00"); private final static Logger logger = LoggerFactory.getLogger(ExcelUtil.class); public static void export(List<Map<String, Object>> list, String filename, HttpServletResponse response, String titles) { try { response.setContentType("application/x-execl"); response.setHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes(), "ISO-8859-1")); ServletOutputStream outputStream = response.getOutputStream(); exportExcel(list, filename, outputStream, titles); if (outputStream != null) { outputStream.close(); } } catch (Exception e) { e.printStackTrace(); } } /** * 数据导出公用方法 */ public static void exportExcel(List<Map<String, Object>> list, String filename, ServletOutputStream outputStream, String titles) { try { Map<String, Object> map1 = list.get(0); StringBuilder sb = new StringBuilder(); String[] fields = titles.split(","); /*sb.append(title); String[] fields = sb.toString().split(",");*/ // 1、创建工作簿 HSSFWorkbook workbook = new HSSFWorkbook(); // 1.1、创建合并单元格对象 CellRangeAddress cellRangeAddress = new CellRangeAddress(0, 0, 0, fields.length - 1);// 起始行号，结束行号，起始列号，结束列号 CellRangeAddress cellRangeAddress1 = new CellRangeAddress(1, 1, 0, fields.length - 1);// 起始行号，结束行号，起始列号，结束列号 CellRangeAddress cellRangeAddress2 = new CellRangeAddress(1, 1, 7, 12);// 起始行号，结束行号，起始列号，结束列号 // 1.2、头标题样式 HSSFCellStyle style1 = createCellStyle(workbook, (short) 18); // 1.3、列标题样式 HSSFCellStyle style2 = createCellStyle(workbook, (short) 13); String headRow = filename; // 2、创建工作表 HSSFSheet sheet = workbook.createSheet(headRow); // 2.1、加载合并单元格对象 sheet.addMergedRegion(cellRangeAddress); sheet.addMergedRegion(cellRangeAddress1); sheet.addMergedRegion(cellRangeAddress2); // sheet.addMergedRegion(cellRangeAddress4); // 设置默认列宽 sheet.setDefaultColumnWidth(22); sheet.setDefaultRowHeightInPoints(22); sheet.autoSizeColumn(1, true); // // 3、创建行 // 3.1、创建头标题行；并且设置头标题 HSSFRow row1 = sheet.createRow(0); row1.setHeightInPoints(50); HSSFCell cell1 = row1.createCell(0); // 加载单元格样式 cell1.setCellStyle(style1); cell1.setCellValue(headRow); // 3.1、创建副标题行；并且设置 HSSFRow row2 = sheet.createRow(1); row2.setHeightInPoints(25); HSSFCell cell2 = row2.createCell(0); // 3.2、创建列标题行；并且设置列标题 HSSFRow row3 = sheet.createRow(2); /*String[] titles = new String[fields.length]; for (int i = 0; i < fields.length; i++) { titles[i] = getTitles(type, fields[i]); }*/ for (int i = 0; i < fields.length; i++) { HSSFCell cell5 = row3.createCell(i); // 加载单元格样式 cell5.setCellStyle(style2); cell5.setCellValue(fields[i]); } // 备注详情 HSSFRow row36 = sheet.createRow(1); row36.setHeightInPoints(18); HSSFCell cell36 = row36.createCell(0); // 加载单元格样式 HSSFCellStyle style36 = workbook.createCellStyle(); style36.setAlignment(HSSFCellStyle.ALIGN_LEFT);// 水平居左 style36.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中 cell36.setCellStyle(style36); HSSFFont font = workbook.createFont(); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 加粗字体 font.setFontHeightInPoints((short) 16); style36.setFont(font); //cell36.setCellValue(data_batch); // 自适应中文 // 4、操作单元格；写入excel if (list != null && list.size() > 0) { for (int j = 0; j < list.size(); j++) { Map<String, Object> map = list.get(j); //Object bean = getBean(type, map); HSSFRow row = sheet.createRow(j + 3); int i = 0; for (Map.Entry<String, Object> entry : map.entrySet()) { String val = ""; if ((entry.getValue()) != null && (entry.getValue()) != "null") { val = entry.getValue().toString(); } else { val = " "; } HSSFCell cell = row.createCell(i); i++; cell.setCellValue(val); logger.info("第" + (j + 3) + "行,第" + val + "--赋值成功"); } } } // 5、输出 workbook.write(outputStream); outputStream.flush(); outputStream.close(); } catch (Exception e) { e.printStackTrace(); } } /** * 创建单元格样式 * * @param workbook 工作簿 * @param fontSize 字体大小 * @return 单元格样式 */ private static HSSFCellStyle createCellStyle(HSSFWorkbook workbook, short fontSize) { HSSFCellStyle style = workbook.createCellStyle(); style.setAlignment(HSSFCellStyle.ALIGN_CENTER);// 水平居中 style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中 // 创建字体 HSSFFont font = workbook.createFont(); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 加粗字体 font.setFontHeightInPoints(fontSize); // 加载字体 style.setFont(font); return style; } public static DecimalFormat getDf() { return df; } public static void setDf(DecimalFormat df) { ExcelUtil.df = df; } public static SimpleDateFormat getSdf() { return sdf; } public static void setSdf(SimpleDateFormat sdf) { ExcelUtil.sdf = sdf; } public static DecimalFormat getNf() { return nf; } public static void setNf(DecimalFormat nf) { ExcelUtil.nf = nf; } /** * 导出多行表头 合并行 * @param request * @param response * @param dataList 数据集合 * @param sheetName 标题行 * @param headList 副标题集合 （head:副标题内容，headnum：合并位置{"开始行,结束行,开始列,结束列"}） * @param detail 表字段 * @param mergeIndex 合并的列 * @param isHeJi 合计行 * @throws Exception */ public static void reportMergeXls(HttpServletRequest request, HttpServletResponse response, List<Map<String, Object>> dataList, String sheetName, List<Map<String, Object>> headList, String[] detail, int[] mergeIndex, boolean isHeJi) throws Exception { HSSFWorkbook workbook = new HSSFWorkbook(); // 1、创建标题 String headRow = sheetName; // 1.1、头标题样式 HSSFCellStyle headstyle = createCellStyle(workbook, (short) 18); // 1.2、列标题样式 HSSFCellStyle style1 = createCellStyle(workbook, (short) 13); // 2、创建工作表 HSSFSheet sheet = workbook.createSheet(headRow); // 设置默认列宽 sheet.setDefaultColumnWidth(22); sheet.setDefaultRowHeightInPoints(22); sheet.autoSizeColumn(1, true); // 3、创建行 // 3.1、创建头标题行；并且设置头标题 HSSFRow row1 = sheet.createRow(0); row1.setHeightInPoints(50); HSSFCell cell1 = row1.createCell(0); // 加载单元格样式 cell1.setCellStyle(headstyle); cell1.setCellValue(headRow); // 3.1、创建副标题行；并且设置 HSSFRow row2 = sheet.createRow(1); row2.setHeightInPoints(25); HSSFCell cell2 = row2.createCell(0); // 3.2、创建列标题行；并且设置列标题 HSSFRow row3 = sheet.createRow(2); // 第一行表头标题 String[] head0 = (String[]) headList.get(0).get("head"); sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, head0.length - 1)); HSSFRow row = sheet.createRow(0); row.setHeight((short) 0x349); HSSFCell cell = row.createCell(0); cell.setCellStyle(headstyle); CellUtil.setCellValue(cell, sheetName); int rowIndex = 1;//副标题第一行开始 for (int k = 0; k < headList.size(); k++) { String[] head = (String[]) headList.get(k).get("head"); String[] headnum = (String[]) headList.get(k).get("headnum"); row = sheet.createRow(rowIndex); if (k == 0) { for (int i = 0; i < head.length; i++) { cell = row.createCell(i); cell.setCellValue(head[i]); cell.setCellStyle(style1); } if (headnum != null){ for (int i = 0; i < headnum.length; i++) { String[] temp = headnum[i].split(","); Integer startrow = Integer.parseInt(temp[0]); Integer overrow = Integer.parseInt(temp[1]); Integer startcol = Integer.parseInt(temp[2]); Integer overcol = Integer.parseInt(temp[3]); sheet.addMergedRegion(new CellRangeAddress(startrow, overrow, startcol, overcol)); } } } else { String[] head1 = (String[]) headList.get(k - 1).get("head"); for (int i = 0; i < head1.length; i++) { cell = row.createCell(i); cell.setCellStyle(style1); if (i > 1) { for (int j = 0; j < head.length; j++) { cell = row.createCell(j); cell.setCellValue(head[j]); cell.setCellStyle(style1); } } } if (headnum != null){ for (int i = 0; i < headnum.length; i++) { String[] temp = headnum[i].split(","); Integer startrow = Integer.parseInt(temp[0]); Integer overrow = Integer.parseInt(temp[1]); Integer startcol = Integer.parseInt(temp[2]); Integer overcol = Integer.parseInt(temp[3]); sheet.addMergedRegion(new CellRangeAddress(startrow, overrow, startcol, overcol)); } } } rowIndex++; } // 1.3、普通单元格样式（中文）样式 HSSFCellStyle style2 = workbook.createCellStyle(); style2.setAlignment(HSSFCellStyle.ALIGN_LEFT);// 水平居左 style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中 HSSFFont font = workbook.createFont(); font.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);// 加粗字体 font.setFontHeightInPoints((short) 10); style2.setFont(font); if (mergeIndex == null) { for (int i = 0; i < dataList.size(); i++) { row = sheet.createRow(i + rowIndex);//标题、时间、表头字段共占了3行，所以在填充数据的时候要加3，也就是数据要从第4行开始填充 for (int j = 0; j < detail.length; j++) { Map tempmap = (HashMap) dataList.get(i); Object data = tempmap.get(detail[j]); cell = row.createCell(j); cell.setCellStyle(style2); cell.setCellType(HSSFCell.CELL_TYPE_STRING); CellUtil.setCellValue(cell, data); } } } else { /*遍历该数据集合*/ int index = rowIndex; List<PoiModel> poiModels = Lists.newArrayList(); if (null != workbook) { Iterator iterator = dataList.iterator(); while (iterator.hasNext()) { row = sheet.createRow(index); /*取得当前这行的map，该map中以key，value的形式存着这一行值*/ Map<String, String> map = (Map<String, String>) iterator.next(); /*循环列数，给当前行塞值*/ for (int i = 0; i < detail.length; i++) { String old = ""; /*old存的是上一行统一位置的单元的值，第一行是最上一行了，所以从第二行开始记*/ if (index > rowIndex) { old = poiModels.get(i) == null ? "" : poiModels.get(i).getContent(); } /*循环需要合并的列*/ for (int j = 0; j < mergeIndex.length; j++) { if (index == rowIndex) { /*记录第一行的开始行和开始列*/ PoiModel poiModel = new PoiModel(); poiModel.setOldContent(String.valueOf(map.get(detail[i]))); poiModel.setContent(String.valueOf(map.get(detail[i]))); poiModel.setRowIndex(rowIndex); poiModel.setCellIndex(i); poiModels.add(poiModel); break; } else if (i > 0 && mergeIndex[j] == i) {/*这边i>0也是因为第一列已经是最前一列了，只能从第二列开始*/ /*当前同一列的内容与上一行同一列不同时，把那以上的合并, 或者在当前元素一样的情况下，前一列的元素并不一样，这种情况也合并*/ /*如果不需要考虑当前行与上一行内容相同，但是它们的前一列内容不一样则不合并的情况，把下面条件中||poiModels.get(i).getContent().equals(String.valueOf(map.get(title[i]))) && !poiModels.get(i - 1).getOldContent().equals(map.get(title[i-1]))去掉就行*/ if (!poiModels.get(i).getContent().equals(String.valueOf(map.get(detail[i]))) || poiModels.get(i).getContent().equals(String.valueOf(map.get(detail[i]))) && !poiModels.get(i - 1).getOldContent().equals(map.get(detail[i - 1]))) { /*当前行的当前列与上一行的当前列的内容不一致时，则把当前行以上的合并*/ CellRangeAddress cra = new CellRangeAddress(poiModels.get(i).getRowIndex()/*从第二行开始*/, index - 1/*到第几行*/, poiModels.get(i).getCellIndex()/*从某一列开始*/, poiModels.get(i).getCellIndex()/*到第几列*/); //在sheet里增加合并单元格 sheet.addMergedRegion(cra); /*重新记录该列的内容为当前内容，行标记改为当前行标记，列标记则为当前列*/ poiModels.get(i).setContent(String.valueOf(map.get(detail[i]))); poiModels.get(i).setRowIndex(index); poiModels.get(i).setCellIndex(i); } } /*处理第一列的情况*/ if (mergeIndex[j] == i && i == 0 && !poiModels.get(i).getContent().equals(String.valueOf(map.get(detail[i])))) { /*当前行的当前列与上一行的当前列的内容不一致时，则把当前行以上的合并*/ CellRangeAddress cra = new CellRangeAddress(poiModels.get(i).getRowIndex()/*从第二行开始*/, index - 1/*到第几行*/, poiModels.get(i).getCellIndex()/*从某一列开始*/, poiModels.get(i).getCellIndex()/*到第几列*/); //在sheet里增加合并单元格 sheet.addMergedRegion(cra); /*重新记录该列的内容为当前内容，行标记改为当前行标记*/ poiModels.get(i).setContent(String.valueOf(map.get(detail[i]))); poiModels.get(i).setRowIndex(index); poiModels.get(i).setCellIndex(i); } /*最后一行没有后续的行与之比较，所有当到最后一行时则直接合并对应列的相同内容 ，index初始值不是1 ，需减去等于1*/ if (mergeIndex[j] == i && index == dataList.size()) { CellRangeAddress cra = new CellRangeAddress(poiModels.get(i).getRowIndex()/*从第二行开始*/, index/*到第几行*/, poiModels.get(i).getCellIndex()/*从某一列开始*/, poiModels.get(i).getCellIndex()/*到第几列*/); //在sheet里增加合并单元格 sheet.addMergedRegion(cra); } } cell = row.createCell(i, Cell.CELL_TYPE_STRING); cell.setCellValue(String.valueOf(map.get(detail[i]))); cell.setCellStyle(style2); cell.setCellType(HSSFCell.CELL_TYPE_STRING); /*在每一个单元格处理完成后，把这个单元格内容设置为old内容*/ poiModels.get(i).setOldContent(old); } index++; } } } if (isHeJi) { row = sheet.createRow(dataList.size() + 3); cell = row.createCell(0); cell.setCellStyle(style2); cell.setCellType(HSSFCell.CELL_TYPE_STRING); CellUtil.setCellValue(cell, "合计："); if (detail.length > 1) { for (int i = 1; i < detail.length; i++) { cell = row.createCell(i); cell.setCellStyle(style2); cell.setCellType(HSSFCell.CELL_TYPE_STRING); String colString = CellReference.convertNumToColString(i); //长度转成ABC列 String sumstring = "SUM(" + colString + "1:" + colString + dataList.size() + ")";//求和公式 sheet.getRow(dataList.size() + 3).getCell(i).setCellFormula(sumstring); } } } sheet.setForceFormulaRecalculation(true); String fileName = new String(sheetName.getBytes("gb2312"), "ISO8859-1"); ByteArrayOutputStream baos = new ByteArrayOutputStream(); workbook.write(baos); response.setContentType("application/x-download;charset=utf-8"); response.addHeader("Content-Disposition", "attachment;filename=" + fileName + ".xls"); OutputStream os = response.getOutputStream(); ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray()); byte[] b = new byte[1024]; while ((bais.read(b)) > 0) { os.write(b); } bais.close(); os.flush(); os.close(); } }
package org.jeecg.common.util; public class PoiModel { private String content; private String oldContent; private int rowIndex; private int cellIndex; public String getOldContent() { return oldContent; } public void setOldContent(String oldContent) { this.oldContent = oldContent; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } public int getRowIndex() { return rowIndex; } public void setRowIndex(int rowIndex) { this.rowIndex = rowIndex; } public int getCellIndex() { return cellIndex; } public void setCellIndex(int cellIndex) { this.cellIndex = cellIndex; } }
package org.jeecg.common.util; import java.math.BigDecimal; import java.sql.Date; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.regex.Pattern; import org.apache.poi.hssf.usermodel.HSSFCell; public class CellUtil { public static String returnCellValue(HSSFCell cell){ String cellvalue = ""; if (null != cell) { switch (cell.getCellType()) { case HSSFCell.CELL_TYPE_NUMERIC: // 数字 return String.valueOf(cell.getNumericCellValue()).trim(); case HSSFCell.CELL_TYPE_STRING: // 字符串 return String.valueOf(cell.getStringCellValue()).trim(); case HSSFCell.CELL_TYPE_BOOLEAN: // Boolean return String.valueOf(cell.getBooleanCellValue()).trim(); case HSSFCell.CELL_TYPE_FORMULA: // 公式 return String.valueOf(cell.getCellFormula()).trim(); case HSSFCell.CELL_TYPE_BLANK: // 空值 return ""; case HSSFCell.CELL_TYPE_ERROR: // 故障 return ""; default: return ""; } } else { } return cellvalue; } //避免cell.setCellValue(checkOrderQmSave.getSellOrderNo())中参数为空就会报错 public static void setCellValue(HSSFCell cell, Object object){ if(object == null){ cell.setCellValue(""); }else{ if (object instanceof String) { cell.setCellValue(String.valueOf(object)); }else if(object instanceof Long){ Long temp = (Long)object; String cellvalue = new DecimalFormat("#0.00").format(temp.doubleValue()); cell.setCellValue(cellvalue); }else if(object instanceof Double){ Double temp = (Double)object; String cellvalue = new DecimalFormat("#0.00").format(temp.doubleValue()); cell.setCellValue(cellvalue); }else if(object instanceof Float){以上是关于Java 后端导出Excel ，复杂表头的主要内容，如果未能解决你的问题，请参考以下文章