jsp导出excel并支持分sheet导出的方法

public DownloadFile exportToExcel() throws Exception{ String config_value = systemConfigService.getConfigValueByKey("Export.Xls"); logger.info("获取的导出类型为execl表格"+",每页sheet导出的行数为:"+config_value+"行-------------------"); File file = new File(new SimpleDateFormat("yyyy-MM-dd").format(new Date())+".xls"); WritableWorkbook wbook = null ; WritableSheet wsheet =null; wbook = Workbook.createWorkbook(file); //建立excel文件 long startTime = System.currentTimeMillis(); try { ExportToExcelSearchCondition condittion = ((ExportToExcelSearchCondition) ServletContext.currentSession().getAttribute("condittion")); List<ContentToExcel> cte = new ArrayList<ContentToExcel>(); if(condittion == null){ throw new Exception("session获取查询条件失败"); }else{ //根据条件查询需要导出的数据 cte = category2ContentDAO.searchByCondition(condittion.getCategoryId(), condittion.getHSDFlag(), condittion.getExternalContentId(),condittion.getContentName(),condittion.getContentId(), condittion.getSystemId(), condittion.getState(), condittion.getCpId(),condittion.getContentType(),condittion.getBeforemodifyTime(),condittion.getAftermodifyTime()); } logger.info("开始导出excel表格--"); if(StringUtils.isNotBlank(config_value)){ int value = NumberUtils.toInt(config_value); if( cte !=null && cte.size()>0 ){ int k = 0;//分sheet的个数 int i = 0;//用于循环Excel的行号 Iterator<ContentToExcel> it = cte.iterator(); Map<String,String> contentidAndContentTypeMap = new HashMap<String,String>(); Map<String,String> contentIdAndDurationMap= new HashMap<String,String>(); for (ContentToExcel contentToExcel : cte) { contentidAndContentTypeMap.put(contentToExcel.getContentId(), contentToExcel.getContentType()); } //计算时长 contentIdAndDurationMap = category2ContentDAO.getDurationByContentIdMap(contentidAndContentTypeMap); /** * 1)采用iterator迭代器进行迭代，与for循环相比可优化迭代效率。 * 2)大量数据影响效率，求大数据量的解决办法。 * add by guohua.yuan 2013-06-08 */ while(it.hasNext()){ ContentToExcel contentToExcel = it.next(); if( i % value == 0){ wsheet = wbook.createSheet("节目单导出("+(int)(i/value+1)+")", (int)(i/value+1)); //工作表名称 //设置Excel字体 WritableFont wfont = new WritableFont(WritableFont.ARIAL, 10, WritableFont.BOLD, false, jxl.format.UnderlineStyle.NO_UNDERLINE, jxl.format.Colour.BLACK); WritableCellFormat titleFormat = new WritableCellFormat(wfont); String[] title = { "标识","名称", "类型", "码流分档", "时长","快编人员" ,"初审人员","复审人员","终审人员","最后更新时间","内容创建时间","入库时间","状态"}; //设置Excel表头 for (int j = 0; j < title.length; j++) { Label excelTitle = new Label(j, 0, title[j], titleFormat); wsheet.addCell(excelTitle); } k = k+1; } wsheet.addCell(new Label(0, i+1 -value*(k-1), contentToExcel.getContentId())); wsheet.addCell(new Label(1, i+1 - value*(k-1), contentToExcel.getContentName())); if(contentToExcel.getContentType().equals("Serie")){ wsheet.addCell(new Label(2, i+1 - value*(k-1), "电视剧单集")); }else if(contentToExcel.getContentType().equals("Series")){ wsheet.addCell(new Label(2, i+1 - value*(k-1), "连续剧")); }else if(contentToExcel.getContentType().equals("Movie")){ wsheet.addCell(new Label(2, i+1 - value*(k-1), "电影")); } if(contentToExcel.getHSDFlag() == 1){ wsheet.addCell(new Label(3, i+1 - value*(k-1), "标清")); }else if(contentToExcel.getHSDFlag() == 2){ wsheet.addCell(new Label(3, i+1 -value*(k-1), "高清")); }else if(contentToExcel.getHSDFlag() == 3){ wsheet.addCell(new Label(3, i+1 - value*(k-1), "超高清")); } //添加时长 wsheet.addCell(new Label(4, i+1 - value*(k-1),contentIdAndDurationMap.get(contentToExcel.getContentId()))); wsheet.addCell(new Label(5, i+1 - value*(k-1), contentToExcel.getKbPersonner())); wsheet.addCell(new Label(6, i+1 - value*(k-1), contentToExcel.getCsPersonner())); wsheet.addCell(new Label(7, i+1 - value*(k-1), contentToExcel.getFsPersonner())); wsheet.addCell(new Label(8, i+1 - value*(k-1), contentToExcel.getZsPersonner())); if(contentToExcel.getModifyTime()==null){ wsheet.addCell(new Label(9, i+1 - value*(k-1), "")); }else{ wsheet.addCell(new Label(9, i+1 - value*(k-1), new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(contentToExcel.getModifyTime()))); } if(contentToExcel.getCreateTime() == null){ wsheet.addCell(new Label(10, i+1 - value*(k-1), "")); }else{ wsheet.addCell(new Label(10, i+1 - value*(k-1), new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(contentToExcel.getCreateTime()))); } if(contentToExcel.getInstorageTime() ==null){ wsheet.addCell(new Label(11,i+1 - value*(k-1),"")); }else{ wsheet.addCell(new Label(11,i+1 - value*(k-1),new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(contentToExcel.getInstorageTime()))); } if(StringUtils.equals(contentToExcel.getStatus(), "1500")){ wsheet.addCell(new Label(12, i+1 - value*(k-1), "成品就绪")); }else if(StringUtils.equals(contentToExcel.getStatus(), "1700")){ wsheet.addCell(new Label(12, i+1 - value*(k-1), "发布成功 ")); }else if(StringUtils.equals(contentToExcel.getStatus(), "1800")){ wsheet.addCell(new Label(12, i+1 - value*(k-1), "发布失败")); }else if(StringUtils.equals(contentToExcel.getStatus(), "1901")){ wsheet.addCell(new Label(12, i+1 - value*(k-1), "发布中")); } i++; } wbook.write();//写入文件 }else{ throw new Exception("没有数据可导"); } }else{ throw new Exception("请检查系统配置管理是否配置导出类型的数据"); } } catch (Exception e) { throw new Exception(e); }finally{ if(wbook!=null){ wbook.close(); } } logger.info("导出excel耗时："+(System.currentTimeMillis() - startTime)+"ms"); ServletContext.currentSession().removeAttribute("condittion"); return new DownloadFile(file.getName()).readFrom(file); }