关于Cell中的各种值的类型判断

switch (cell.getCellType()){
case Cell.CELL_TYPE_NUMERIC: //数字
        cellValue = stringDateProcess(cell);
        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 = String.valueOf(cell.getCellFormula());
        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;
}