poi 数据类型问题

private String getValue(XSSFCell hssfCell) {
		if (hssfCell == null) {
			// 返回布尔类型的值
			return "";
		} else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {
			// 返回布尔类型的值
			return String.valueOf(hssfCell.getBooleanCellValue());
		} else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {
			// 返回数值类型的值
			DecimalFormat df = new DecimalFormat("#");
			return df.format(hssfCell.getNumericCellValue());
		} else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_FORMULA) {
			// 返回公式类型的值
			return hssfCell.getCTCell().getV();
		} else {
			// 返回字符串类型的值
			return String.valueOf(hssfCell.getStringCellValue());
		}
	}

	private Date getDateValue(XSSFCell hssfCell) throws ParseException {
		if (hssfCell.getCellType() != hssfCell.CELL_TYPE_STRING
				&& hssfCell.getCellType() != hssfCell.CELL_TYPE_FORMULA) {
			return HSSFDateUtil.getJavaDate(hssfCell.getNumericCellValue());
		} else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_FORMULA) {
			// 返回数值类型的值
			return DateUtils.parseDate(hssfCell.getCTCell().getV(), "yyyy/MM/dd");
		} else {
			return DateUtils.parseDate(hssfCell.getStringCellValue(), "yyyy/MM/dd");
		}

	}