Qt使用QXlsx将Excel表格数据导入到SQLite数据库

这是我记录Qt学习过程的第8篇心得文章，上次写到Qt使用QAxObject将Excel表格数据导入到SQLite数据库，使用过程中发现，执行效率不高，于是就研究了QXlsx，发现利用QXlsx处理Excel真的太方便了，上一篇写了使用QXlsx将QTableView数据导出到Excel表格，肯定少不了数据导入的啊，上代码。

实现代码：

cpp 复制代码

//读取EXcel数据导入到SQLite数据库，使用QXlsx
bool Skysonya::readExcelToSQLiteByQXlsx(const QString &fileName, QSqlDatabase sqliteDB, QString tableName,
                                        QString strTitle)
{
    QXlsx::Document xlsx(fileName);
    if (!xlsx.load())
    {
        messageBox("critical", strTitle, "打开Excel文件失败！");
        return false;
    }
    int rowCount = xlsx.dimension().rowCount();
    int colCount = xlsx.dimension().columnCount();

    QSqlQuery query(sqliteDB);
    query.exec("select * from " + tableName);
    QSqlRecord emptyRec = query.record();  //获取空记录，只有字段名
    QStringList fieldList{};
    for (int i = 1; i < emptyRec.count(); i++)
    {
        fieldList.append(emptyRec.fieldName(i));
    }
    QString sql = fieldList.join(",");
    qDebug() << strTitle + "SQL：" << sql << Qt::endl;
    sql = "insert into " + tableName + " (" + sql + ") values ";
    qDebug() << strTitle + "SQL：" << sql << Qt::endl;
    fieldList.clear();
    // 遍历单元格
    for (int row = 2; row < rowCount + 1; row++)
    {
        QStringList fList{};
        for (int col = 2; col < colCount + 1; col++)
        {
            // 获取单元格
            fList.append("'" + xlsx.read(row, col).toString() + "'");
        }
        fieldList.append("(" + fList.join(",") + ")");
        qDebug() << strTitle + "SQL："
                 << "(" + fList.join(",") + ")" << Qt::endl;
    }
    sql += fieldList.join(",");
    // qDebug() << strTitle + "SQL：" << sql << Qt::endl;
    // 创建一个Warning弹出对话框，添加按钮："Yes"、"No"、"Cancel"
    QString strInfo = "替换请选\"是\"，追加请选\"否\"，取消请选\"取消\"！";
    QMessageBox *msgBox = new QMessageBox(QMessageBox::Warning, strTitle, strInfo,
                                          QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel);
    msgBox->button(QMessageBox::Yes)->setText("是");       //将"Yes"按钮改为显示"是"
    msgBox->button(QMessageBox::No)->setText("否");        //将"No"按钮改为显示"否"
    msgBox->button(QMessageBox::Cancel)->setText("取消");  //将"Cancel"按钮改为显示"取消"
    int result = msgBox->exec();                           //显示Warning弹出对话框
    switch (result)
    {
        case QMessageBox::Yes:
            query.clear();
            query.exec("delete from " + tableName);
            query.clear();
            query.exec("delete from sqlite_sequence where name = '" + tableName + "'");
            strInfo = strTitle + "：数据替换";
            break;
        case QMessageBox::No:
            strInfo = strTitle + "：数据追加";
            break;
        default:
            break;
    }
    query.clear();
    if (!query.exec(sql))
    {
        messageBox("critical", strTitle, strInfo + "失败\n" + query.lastError().text());
        qDebug() << strInfo + "失败：" << query.lastError() << Qt::endl;
        return false;
    }
    qDebug() << strInfo + "成功！" << Qt::endl;
    xlsx.deleteLater();
    return true;
}

messageBox() 函数参考拙文QT实现QMessageBox中文按钮

QXlsx下载与配置，查阅QXlsx Qt操作excel，作者周不易，在此也表示感谢！