关于java读取excel的问题。读取到某行有空值的错误

	private void readXml(String fileName) {

		 

		 boolean isE2007 = false;    //判断是否是excel2007格式  

	        if(fileName.endsWith("xlsx"))  

	            isE2007 = true;  

	        try {  

	            InputStream input = new FileInputStream(fileName);  //建立输入流  

	            Workbook wb  = null;  

	            //根据文件格式(2003或者2007)来初始化  

	            if(isE2007)  

	                wb = new XSSFWorkbook(input);  

	            else  

	                wb = new HSSFWorkbook(input);  

	            Sheet sheet = wb.getSheetAt(0);     //获得第一个表单  

	            Iterator<Row> rows = sheet.rowIterator(); //获得第一个表单的迭代器   

	            while (rows.hasNext()) {  

	                Row row = rows.next();  //获得行数据  	               

	                System.out.println("Row #" + row.getRowNum());  //获得行号从0开始  

	                Iterator<Cell> cells = row.cellIterator();    //获得第一行的迭代器  

	                String value = "";  

	                while (cells.hasNext()) {  

	                    Cell cell = cells.next();  //获得列数据

	                    System.out.println("Cell #" + cell.getColumnIndex());  

	                    switch (cell.getCellType()) {   //根据cell中的类型来输出数据  

	                    case HSSFCell.CELL_TYPE_NUMERIC:  

	                     //   System.out.println(cell.getNumericCellValue());  

	                        DecimalFormat df = new DecimalFormat("0");  	                        

	                        String shu = df.format(cell.getNumericCellValue());  //将科学计数的转换

	                        value += shu+ ","; 

	                        System.out.println(shu);

	                        break;  

	                    case HSSFCell.CELL_TYPE_STRING:  

	                        System.out.println(cell.getStringCellValue());  

	                        value += cell.getStringCellValue() + ","; 

	                        break;  

	                    case HSSFCell.CELL_TYPE_BOOLEAN:  

	                        System.out.println(cell.getBooleanCellValue());  

	                        value += cell.getBooleanCellValue()+ ","; 

	                        break;  

	                    case HSSFCell.CELL_TYPE_FORMULA:  

	                        System.out.println(cell.getCellFormula());  

	                        value += cell.getCellFormula()+ ","; 

	                        break; 

	                    default:  

	                        System.out.println("unsuported sell type");  

	                    break;  

	                    }   	              

	                } 

	                //写入数据库

	                if(row.getRowNum()>0){

	                String[] val = value.split(",");

	                System.out.println(value);

	                AddressList addressList= new AddressList();	                

	                addressList.setName(val[0]); 

	                addressList.setTel(val[1]);

	                addressList.setEmall(val[2]);

	                addressList.setFax(val[3]);

	                addressList.setRoomnum(val[4]);

	                addressList.setOph(val[5]);

	                addressList.setAddress(val[6]);

	                addressList.setComments(val[7]); 

	                addressList.setSort(Integer.parseInt(val[8]));

	             //addressList.setBirthday(val[9]);

	                

	                addressList.setPid(pid);

	                addressList.setUserid(userid);	                

	                addressList.setType(type);      

	                addressList.setSex(0);	                

	                addressListService.save(addressList);

	                }

	            }   

	             

	        } catch (IOException ex) {  

	            ex.printStackTrace();  

	        }  

	    }   

代码如上，原文http://blog.csdn.net/shuwei003/article/details/6741649 ，我在原文的基础上修改的，我是导入到sql里面 出现问题的地方是在//写入数据库，
当读取到第五列的时候因为是空的，addressList.setName(val[0]); 这就取不到，因为是根据数字来取值的，没有值就错。一错整个方法就运行不了