poi导入导出excel后记

private List<BrandMobileInfoEntity> readBrandPeriodSorXls(InputStream is)
			throws IOException, ParseException {
		HSSFWorkbook hssfWorkbook = new HSSFWorkbook(is);
		List<BrandMobileInfoEntity> brandMobileInfos = new ArrayList<BrandMobileInfoEntity>();
		BrandMobileInfoEntity brandMobileInfo = null;
		// 循环工作表Sheet
		for (int numSheet = 0; numSheet < hssfWorkbook.getNumberOfSheets(); numSheet++) {
			HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);
			if (hssfSheet == null) {
				continue;
			}
			// 循环行Row
			for (int rowNum = 1; rowNum <= hssfSheet.getLastRowNum(); rowNum++) {
				HSSFRow hssfRow = hssfSheet.getRow(rowNum);
				int cellCount=hssfRow.getLastCellNum();
				if(-1==cellCount) continue;//解决空行的
				brandMobileInfo = new BrandMobileInfoEntity();
				for (int i = 0; i < cellCount; i++) {
					HSSFCell brandIdHSSFCell = hssfRow.getCell(i);
					if(brandIdHSSFCell==null){
						brandMobileInfo=null;
						break;//解决不是空行但是实际上是没数据的，即为null
					}
					if (i == 0) {
						//System.out.println("=================="+getCellValue(brandIdHSSFCell));
						if(getCellValue(brandIdHSSFCell)==null||!StringUtils.isNumeric(getCellValue(brandIdHSSFCell))||"".equals(getCellValue(brandIdHSSFCell))){
							i=17;
							continue;//第一列不合法，整行都不读取
						}else{
							brandMobileInfo.setBrandId(Integer.parseInt(getCellValue(brandIdHSSFCell)));
						}
					} else if (i == 1) {
						continue;
					} else if (i == 2) {
						continue;
					} else if (i == 3) {
						continue;
					} else if (i == 4) {
						continue;
					} else if (i == 5) {
						brandMobileInfo.setWarehouse(getCellValue(brandIdHSSFCell));
					} else if (i == 6) {
						if(StringUtils.isNumeric(getCellValue(brandIdHSSFCell))&&!"".equals(getCellValue(brandIdHSSFCell))){
						brandMobileInfo.setSortA1(Integer.parseInt(getCellValue(brandIdHSSFCell)));
						}
					} else if (i == 7) {
						if(StringUtils.isNumeric(getCellValue(brandIdHSSFCell))&&!"".equals(getCellValue(brandIdHSSFCell))){
						brandMobileInfo.setSortA2(Integer.parseInt(getCellValue(brandIdHSSFCell)));
						}
					} else if (i == 8) {
						if(StringUtils.isNumeric(getCellValue(brandIdHSSFCell))&&!"".equals(getCellValue(brandIdHSSFCell))){
						brandMobileInfo.setSortB(Integer.parseInt(getCellValue(brandIdHSSFCell)));
						}
					} else if (i == 9) {
						if(StringUtils.isNumeric(getCellValue(brandIdHSSFCell))&&!"".equals(getCellValue(brandIdHSSFCell))){
						brandMobileInfo.setSortC10(Integer.parseInt(getCellValue(brandIdHSSFCell)));
						}
					} else if (i == 10) {
						if(StringUtils.isNumeric(getCellValue(brandIdHSSFCell))&&!"".equals(getCellValue(brandIdHSSFCell))){
						brandMobileInfo.setSortC(Integer.parseInt(getCellValue(brandIdHSSFCell)));
						}
					} else if (i == 11) {
						if(StringUtils.isNumeric(getCellValue(brandIdHSSFCell))&&getCellValue(brandIdHSSFCell).length()<9)
						brandMobileInfo.setHitA(getCellValue(brandIdHSSFCell));
					} else if (i == 12) {
						if(StringUtils.isNumeric(getCellValue(brandIdHSSFCell))&&getCellValue(brandIdHSSFCell).length()<9)
						brandMobileInfo.setHitB(getCellValue(brandIdHSSFCell));
					} else if (i == 13) {
						if(StringUtils.isNumeric(getCellValue(brandIdHSSFCell))&&getCellValue(brandIdHSSFCell).length()<9)
						brandMobileInfo.setHitC(getCellValue(brandIdHSSFCell));
					} else if (i == 14) {
						String customSellType=getCellValue(brandIdHSSFCell);
						if("今日上新".equals(customSellType)){
							customSellType="today";
						}else if("正在热卖".equals(customSellType)){
							customSellType="yesterday";
						}else if("最后机会".equals(customSellType)){
							customSellType="lastday";
						}else {
							customSellType="no_defined";
						}
						
						brandMobileInfo.setCustomSellType(customSellType);
					}else if (i == 15) {
                      continue;
                    }else if (i == 16) {
                    	if(StringUtils.isNumeric(getCellValue(brandIdHSSFCell))&&!"".equals(getCellValue(brandIdHSSFCell))){
                    		brandMobileInfo.setChannelId(Integer.parseInt(getCellValue(brandIdHSSFCell)));
						}
                    }
					
				}
				if(brandMobileInfo!=null){
				brandMobileInfos.add(brandMobileInfo);
				}
			}
		}
		return brandMobileInfos;
	}

1. int cellCount=hssfRow.getLastCellNum();
2. if(-1==cellCount) continue;//解决空行的

public static HSSFSheet setHSSFValidation(HSSFSheet sheet,  
	            String[] textlist, int firstRow, int endRow, int firstCol,  
	            int endCol) {  
	        // 加载下拉列表内容   
	        DVConstraint constraint = DVConstraint.createExplicitListConstraint(textlist);  
	        // 设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列   
	        CellRangeAddressList regions = new CellRangeAddressList(firstRow,endRow, firstCol, endCol);  
	        // 数据有效性对象   
	        HSSFDataValidation data_validation_list = new HSSFDataValidation(regions, constraint);  
	        sheet.addValidationData(data_validation_list);  
	        return sheet;  
	    }  
	

CellUtil.setAlignment(row.createCell(j), wb, CellStyle.ALIGN_CENTER);
			insertDataCell(row, j++, brandCompleteInfo.getSortA1());
			CellUtil.setAlignment(row.createCell(j), wb, CellStyle.ALIGN_CENTER);
			insertDataCell(row, j++, brandCompleteInfo.getSortA2());

private void insertDataCell(HSSFRow row,int i,int object){
			row.getCell(i).setCellValue(object);
	}

sheet.autoSizeColumn((short)0); //adjust width of the first column
	    //sheet.autoSizeColumn((short)1); //adjust width of the second column
	    sheet.setColumnWidth(1, 14000);
	    sheet.autoSizeColumn((short)2); 
	    sheet.autoSizeColumn((short)3); 
	    sheet.setColumnWidth((short)4, 3000); 
	    sheet.autoSizeColumn((short)11); 
	    sheet.autoSizeColumn((short)12); 
	    sheet.autoSizeColumn((short)13); 
	    sheet.setColumnWidth((short)14, 3500);