// 判断数据的类型
	switch (cell.getCellType()) {
	case Cell.CELL_TYPE_NUMERIC: // 数字
		cellValue = String.valueOf(cell.getNumericCellValue());

		break;
	case Cell.CELL_TYPE_STRING: // 字符串
		cellValue = String.valueOf(cell.getStringCellValue());
		break;
	case Cell.CELL_TYPE_BOOLEAN: // Boolean
		cellValue = String.valueOf(cell.getBooleanCellValue());
		break;
	case Cell.CELL_TYPE_FORMULA: // 公式
		cellValue =NumberToTextConverter.toText(cell.getNumericCellValue());//重点,无精度缺失的确切值.
		break;
	case Cell.CELL_TYPE_BLANK: // 空值
		cellValue = "";
		break;
	case Cell.CELL_TYPE_ERROR: // 故障
		cellValue = "非法字符";
		break;

	default:
		cellValue = "未知类型";
		break;
	}