POI中HSSFCELL数值表格类型转换字符串

public String getCellValue(HSSFCell cell) {
        String value = "";
        if (cell != null) {
            switch (cell.getCellType()) {
                case HSSFCell.CELL_TYPE_FORMULA:
                    break;
                case HSSFCell.CELL_TYPE_NUMERIC:
                    DecimalFormat decimalFormat = new DecimalFormat("#");
                    value = decimalFormat.format(cell.getNumericCellValue()).trim();
                    break;
                case HSSFCell.CELL_TYPE_STRING:
                    value = cell.getStringCellValue().trim();
                    break;
                default:
                    value = "";
                    break;
            }
        }
        return value.trim();
    }