Method of reading file contents by Excel

	/** *  describe ： obtain IO Data in the stream , Assemble into List<List<Object>> object  * @param in,fileName * @return * @throws IOException */
	public List<List<Object>> getBankListByExcel(InputStream in, String fileName) throws Exception
	{
    
		List<List<Object>> list = null;

		//  establish Excel Workbooks 
		Workbook work = this.getWorkbook(in, fileName);
		if (null == work)
		{
    
			throw new Exception(" establish Excel The workbook is empty ！");
		}
		Sheet sheet = null;
		Row row = null;
		Cell cell = null;

		list = new ArrayList<List<Object>>();
		//  Traverse Excel All of the sheet
		for (int i = 0; i < work.getNumberOfSheets(); i++)
		{
    
			sheet = work.getSheetAt(i);
			if (sheet == null)
			{
    
				continue;
			}

			//  Traverse the current sheet All rows in 
			for (int j = sheet.getFirstRowNum(); j <= sheet.getLastRowNum(); j++)
			{
    
				row = sheet.getRow(j);
				if (row == null || row.getFirstCellNum() == j)
				{
    
					continue;
				}

				//  Traverse all columns 
				List<Object> li = new ArrayList<Object>();
				for (int y = row.getFirstCellNum(); y < row.getLastCellNum(); y++)
				{
    
					cell = row.getCell(y);
					li.add(this.getCellValue(cell));
				}
				list.add(li);
			}
		}
		((InputStream) work).close();
		
		return list;
	}