Qt讀取Excel之QXlsx

void FlightPlanWid::readExcel(QString path)
{
    QXlsx::Document xlsx(path);
    QXlsx::Workbook *workBook = xlsx.workbook();
    QXlsx::Worksheet *workSheet = static_cast<QXlsx::Worksheet*>(workBook->sheet(0));
    ui.tableWidget->setRowCount(workSheet->dimension().rowCount());
    ui.tableWidget->setColumnCount(23);
    QString value;
    for (int i = 6; i <= workSheet->dimension().rowCount(); i++)
    {
        for (int j = 1; j <= workSheet->dimension().columnCount(); j++)
        {
            QXlsx::Cell *cell = workSheet->cellAt(i, j);
            if (cell==NULL) continue;
            if (cell->isDateTime())//日期
            {
                if (cell->dateTime().date().year()==1899) continue;
                value = cell->dateTime().toString("yyyy/MM/dd hh:mm");
            }    
            else
            {
                value = cell->value().toString();
            }
            setItemValue(i - 6, j - 1, value);
        }
    }
    for (int i = ui.tableWidget->rowCount() - 1; i >= 0; i--)//刪除末尾空白行
    {
        QTableWidgetItem *item = ui.tableWidget->item(i, 0);
        if (item==NULL)
            ui.tableWidget->removeRow(i);
        else break;
    }
}

void FlightPlanWid::saveBtnClickedSlot()
{
    if (currentScriptIndex == -1) return;
    QXlsx::Document xlsx;
    QString value;
    for (int i = 0; i < ui.tableWidget->rowCount(); i++)
    {
        for (int j = 0; j < ui.tableWidget->columnCount(); j++)
        {
            QTableWidgetItem *item = ui.tableWidget->item(i, j);
            if (item == NULL)
                value = "";
            else
                value = item->text();
            xlsx.write(i + 1, j + 1, value);
        }
    }
    if (xlsx.saveAs("./Data/Saved/" + ui.nameEdt->text() + ".xlsx"))
        QMessageBox::information(this, "保存", "保存成功！", QMessageBox::Ok);
}