Qt 将表格中的数据保存到Excel

首先,需要在.pro文件中添加如下语句

 CONFIG += qaxcontainer #导出excel 

然后在.cpp文件中添加如下语句

#include <QTableWidget>
#include <QFileDialog>
#include <QDesktopServices>
#include <QMessageBox>
#include <QAxObject>

最后是实现代码

//第一个参数是页面上的表格,第二个是导出文件的表头数据
 void FaJianDialog::Table2ExcelByHtml(QTableWidget *table,QString title)
 {
     QString fileName = QFileDialog::getSaveFileName(table, "保存",QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation),"Excel 文件(*.xls *.xlsx)");
     if (fileName!="")
     {
         QAxObject *excel = new QAxObject;
         if (excel->setControl("Excel.Application")) //连接Excel控件
         {
             excel->dynamicCall("SetVisible (bool Visible)","false");//不显示窗体
             excel->setProperty("DisplayAlerts", false);//不显示任何警告信息。如果为true那么在关闭是会出现类似“文件已修改,是否保存”的提示
             QAxObject *workbooks = excel->querySubObject("WorkBooks");//获取工作簿集合
             workbooks->dynamicCall("Add");//新建一个工作簿
             QAxObject *workbook = excel->querySubObject("ActiveWorkBook");//获取当前工作簿
             QAxObject *worksheet = workbook->querySubObject("Worksheets(int)", 1);

             int i,j;
             //QTablewidget 获取数据的列数
             int colcount=table->columnCount();
              //QTablewidget 获取数据的行数
             int rowscount=table->rowCount()

             //QTableView 获取列数
        //int colount=ui->tableview->model->columnCount();
             //QTableView 获取行数
        //int rowcount=ui->tableview->model->rowCount();

             QAxObject *cell,*col;
             //标题行
             cell=worksheet->querySubObject("Cells(int,int)", 1, 1);
             cell->dynamicCall("SetValue(const QString&)", title);
             cell->querySubObject("Font")->setProperty("Size", 18);
             //调整行高
             worksheet->querySubObject("Range(const QString&)", "1:1")->setProperty("RowHeight", 30);
             //合并标题行
             QString cellTitle;
             cellTitle.append("A1:");
             cellTitle.append(QChar(colcount - 1 + 'A'));
             cellTitle.append(QString::number(1));
             QAxObject *range = worksheet->querySubObject("Range(const QString&)", cellTitle);
             range->setProperty("WrapText", true);
             range->setProperty("MergeCells", true);
             range->setProperty("HorizontalAlignment", -4108);//xlCenter
             range->setProperty("VerticalAlignment", -4108);//xlCenter
             //列标题
             for(i=0;i<colcount;i++)
             {
                 QString columnName;
                 columnName.append(QChar(i  + 'A'));
                 columnName.append(":");
                 columnName.append(QChar(i + 'A'));
                 col = worksheet->querySubObject("Columns(const QString&)", columnName);
                 col->setProperty("ColumnWidth", table->columnWidth(i)/6);
                 cell=worksheet->querySubObject("Cells(int,int)", 2, i+1);
                 //QTableWidget 获取表格头部文字信息
                 columnName=table->horizontalHeaderItem(i)->text();
                 //QTableView 获取表格头部文字信息
                 // columnName=ui->tableView_right->model()->headerData(i,Qt::Horizontal,Qt::DisplayRole).toString();
                 cell->dynamicCall("SetValue(const QString&)", columnName);
                 cell->querySubObject("Font")->setProperty("Bold", true);
                 cell->querySubObject("Interior")->setProperty("Color",QColor(191, 191, 191));
                 cell->setProperty("HorizontalAlignment", -4108);//xlCenter
                 cell->setProperty("VerticalAlignment", -4108);//xlCenter
             }

            //数据区

            //QTableWidget 获取表格数据部分
             for(i=0;i<rowcount;i++){
                 for (j=0;j<colcount;j++)
                 {
                     worksheet->querySubObject("Cells(int,int)", i+3, j+1)->dynamicCall("SetValue(const QString&)", table->item(i,j)?table->item(i,j)->text():"");
                 }
             }


            //QTableView 获取表格数据部分
            //  for(i=0;i<rowcount;i++) //行数
            //     {
            //         for (j=0;j<colcount;j++)   //列数
            //         {
            //             QModelIndex index = ui->tableView_right->model()->index(i, j);
            //             QString strdata=ui->tableView_right->model()->data(index).toString();
            //             worksheet->querySubObject("Cells(int,int)", i+3, j+1)->dynamicCall("SetValue(const QString&)", strdata);
            //         }
            //     }


             //画框线
             QString lrange;
             lrange.append("A2:");
             lrange.append(colcount - 1 + 'A');
             lrange.append(QString::number(table->rowCount() + 2));
             range = worksheet->querySubObject("Range(const QString&)", lrange);
             range->querySubObject("Borders")->setProperty("LineStyle", QString::number(1));
             range->querySubObject("Borders")->setProperty("Color", QColor(0, 0, 0));
             //调整数据区行高
             QString rowsName;
             rowsName.append("2:");
             rowsName.append(QString::number(table->rowCount() + 2));
             range = worksheet->querySubObject("Range(const QString&)", rowsName);
             range->setProperty("RowHeight", 20);
             workbook->dynamicCall("SaveAs(const QString&)",QDir::toNativeSeparators(fileName));//保存至fileName
             workbook->dynamicCall("Close()");//关闭工作簿
             excel->dynamicCall("Quit()");//关闭excel
             delete excel;
             excel=NULL;        //QMessageBox::information(this,tr("提示"),tr("数据已保存"));
             if (QMessageBox::question(NULL,"完成","文件已经导出,是否现在打开?",QMessageBox::Yes|QMessageBox::No)==QMessageBox::Yes)
             {
                 QDesktopServices::openUrl(QUrl("file:///" + QDir::toNativeSeparators(fileName)));
             }
         }
         else
         {
             QMessageBox::warning(NULL,"错误","未能创建 Excel 对象,请安装 Microsoft Excel。",QMessageBox::Apply);
         }
     }
 }

至此,到处基本完成

 

出处:https://www.cnblogs.com/leocc325/p/12830233.html

posted @ 2021-10-27 17:33  浅笑19  阅读(1250)  评论(0编辑  收藏  举报