Invalid row number (65536) outside allowable range (0..65535)
2024-05-14 08:46:52
问题描述：导出后，导出的表格没有任何内容
问题原因：数据量过大，导致后台报错Invalid row number (65536) outside allowable range (0..65535)，Excel一张(或者说一页)默认行数是65535
解决思路：行数过多时，新建一页
代码：
response.addHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode(title+".xls", "UTF-8"));response.setContentType("application/octet-stream");// 声明一个工作薄HSSFWorkbook workbook = new HSSFWorkbook();/** 每页数据量为65530，超过的换到下一页* */int page = dataset.size()%65530;int dataCount = dataset.size();int pageNo;if (page == 0) {pageNo = dataCount / 65530;} else {pageNo = dataCount / 65530 + 1;}for (int p = 1; p <= pageNo; p++) {// 生成一个表格HSSFSheet sheet = workbook.createSheet(title.split(",")[0]+""+p);// 设置表格默认列宽度为15个字节sheet.setDefaultColumnWidth((short) 25);//头部标题样式HSSFCellStyle style0 = workbook.createCellStyle();style0.setFillForegroundColor(HSSFColor.GREY_40_PERCENT.index);style0.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);style0.setBorderBottom(HSSFCellStyle.BORDER_THIN);style0.setBorderLeft(HSSFCellStyle.BORDER_THIN);style0.setBorderRight(HSSFCellStyle.BORDER_THIN);style0.setBorderTop(HSSFCellStyle.BORDER_THIN);style0.setAlignment(HSSFCellStyle.ALIGN_CENTER);HSSFFont font0 = workbook.createFont();font0.setColor(HSSFColor.BLACK.index);font0.setFontHeightInPoints((short) 20);font0.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);style0.setFont(font0);// 表头样式HSSFCellStyle style = workbook.createCellStyle();style.setFillForegroundColor(HSSFColor.GREY_40_PERCENT.index);style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);style.setBorderBottom(HSSFCellStyle.BORDER_THIN);style.setBorderLeft(HSSFCellStyle.BORDER_THIN);style.setBorderRight(HSSFCellStyle.BORDER_THIN);style.setBorderTop(HSSFCellStyle.BORDER_THIN);style.setAlignment(HSSFCellStyle.ALIGN_CENTER);HSSFFont font = workbook.createFont();font.setColor(HSSFColor.BLACK.index);font.setFontHeightInPoints((short) 12);font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);style.setFont(font);//正文样式HSSFCellStyle style2 = workbook.createCellStyle();style2.setFillForegroundColor(HSSFColor.WHITE.index);style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);style2.setBorderRight(HSSFCellStyle.BORDER_THIN);style2.setBorderTop(HSSFCellStyle.BORDER_THIN);style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);HSSFFont font2 = workbook.createFont();font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);font2.setFontHeightInPoints((short) 14);style2.setFont(font2);HSSFRow rowName = sheet.createRow((short) 0);//(列开始，行开始，列结束，行结束)sheet.addMergedRegion(new Region(0, (short)0, 0, (short) (headers.length-1)));HSSFCell ce = rowName.createCell((short) 0);ce.setCellValue(title);ce.setCellStyle(style0);//产生表格标题行HSSFRow row = sheet.createRow(1);for (short i = 0; i < headers.length; i++) {HSSFCell cell = row.createCell(i);cell.setCellStyle(style);HSSFRichTextString text = new HSSFRichTextString(headers[i]);cell.setCellValue(text+""+p);}for (int k = 65530 * p - 65530; k < 65530 * p && k < dataCount; k++) {row = sheet.createRow(k - 65530 * p + 65532);Object t = dataset.get(k);Field[] fields = t.getClass().getDeclaredFields();int j=0;List colsList = new ArrayList(list);for (short i = 0; i < fields.length; i++) {if(colsList.contains(cols[i])){HSSFCell cell = row.createCell(j);j++;Field field = fields[i];String fieldName = field.getName();String getMethodName = "get"+ fieldName.substring(0, 1).toUpperCase()+ fieldName.substring(1);Class tCls = t.getClass();Method getMethod = tCls.getMethod(getMethodName,new Class[] {});Object value = getMethod.invoke(t, new Object[] {});//判断值的类型后进行强制类型转换cell.setCellStyle(style2);String textValue = getValue(value);if(textValue!=null&&!"".equals(textValue)){cell.setCellValue(textValue);}else{cell.setCellValue("--");}colsList.remove(0);}}}/*//遍历集合数据，产生数据行Iterator<Object> it = dataset.iterator();int index = 1;while (it.hasNext()) {index++;row = sheet.createRow(index);Object t = it.next();//利用反射，根据javabean属性的先后顺序，动态调用getXxx()方法得到属性值Field[] fields = t.getClass().getDeclaredFields();int j=0;List colsList = new ArrayList(list);for (short i = 0; i < fields.length; i++) {if(colsList.contains(cols[i])){HSSFCell cell = row.createCell(j);j++;Field field = fields[i];String fieldName = field.getName();String getMethodName = "get"+ fieldName.substring(0, 1).toUpperCase()+ fieldName.substring(1);Class tCls = t.getClass();Method getMethod = tCls.getMethod(getMethodName,new Class[] {});Object value = getMethod.invoke(t, new Object[] {});//判断值的类型后进行强制类型转换cell.setCellStyle(style2);String textValue = getValue(value);if(textValue!=null&&!"".equals(textValue)){cell.setCellValue(textValue);}else{cell.setCellValue("--");}colsList.remove(0);}}}if(totals!=null&&totals.size()>0){row = sheet.createRow(index+1);for (int i = 0; i < totals.size(); i++) {HSSFCell cell = row.createCell(i);cell.setCellStyle(style2);cell.setCellValue(totals.get(i));}}*/}OutputStream out = response.getOutputStream(); workbook.write(out);Invalid row number (65536) outside allowable range (0..65535)相关推荐
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