十八、QT之導出數據到EXCEL

ExcelAPI.h

#ifndef EXCEL_H
#define EXCEL_H

#include <QObject>
#include <QMutex>
#include <QStringList>

class ExcelAPI : public QObject
{
    Q_OBJECT
private:
    explicit ExcelAPI(QObject *parent = 0);
    static ExcelAPI *_instance;
    QStringList html;

    void checkBorder(bool border);

public:
    static ExcelAPI *Instance() {
        static QMutex mutex;
        if (!_instance) {
            QMutexLocker locker(&mutex);
            if (!_instance) {
                _instance = new ExcelAPI;
            }
        }
        return _instance;
    }

    void ToExcel(QString fileName, QString sheetName, QString title, QString subTitle,
                 QList<QString> columnNames, QList<int> columnWidths,
                 QStringList content, bool border, bool check);

    void ToExcel(QString fileName, QString sheetName, QString title,
                 QList<QString> columnNames, QList<int> columnWidths,
                 QStringList subTitle1, QStringList subTitle2,
                 QStringList content, bool border, bool check);

};

#endif // EXCEL_H

ExcelAPI.cpp

#if _MSC_VER >= 1600
#pragma execution_character_set("utf-8")
#endif

#include "excelapi.h"
#include "myhelper.h"

ExcelAPI *ExcelAPI::_instance = 0;
ExcelAPI::ExcelAPI(QObject *parent) :
    QObject(parent)
{
}

void ExcelAPI::checkBorder(bool border)
{
    if (border) {
        html.append("  <Borders>\n");
        html.append("   <Border ss:Position=\"Bottom\" ss:LineStyle=\"Continuous\" ss:Weight=\"1\"/>\n");
        html.append("   <Border ss:Position=\"Left\" ss:LineStyle=\"Continuous\" ss:Weight=\"1\"/>\n");
        html.append("   <Border ss:Position=\"Right\" ss:LineStyle=\"Continuous\" ss:Weight=\"1\"/>\n");
        html.append("   <Border ss:Position=\"Top\" ss:LineStyle=\"Continuous\" ss:Weight=\"1\"/>\n");
        html.append("  </Borders>\n");
    }
}

void ExcelAPI::ToExcel(QString fileName, QString sheetName, QString title, QString subTitle,
                       QList<QString> columnNames, QList<int> columnWidths,
                       QStringList content, bool border, bool check)
{
    if (sheetName.length() == 0) {
        sheetName = "Sheet1";
    }

    //計算行數列數
    int columnCount = columnNames.count();
    int rowCount = content.count();

    //逐個拼接xml字符,再保存爲xls文件
    //清空原有數據,確保每次都是新的數據
    html.clear();

    //固定頭部信息
    html.append("<?xml version=\"1.0\"?>\n");
    html.append("<?mso-application progid=\"Excel.Sheet\"?>\n");
    html.append("<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\"\n");
    html.append(" xmlns:o=\"urn:schemas-microsoft-com:office:office\"\n");
    html.append(" xmlns:x=\"urn:schemas-microsoft-com:office:excel\"\n");
    html.append(" xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\"\n");
    html.append(" xmlns:html=\"http://www.w3.org/TR/REC-html40\">\n");

    //文檔信息
    html.append(" <DocumentProperties xmlns=\"urn:schemas-microsoft-com:office:office\">\n");
    html.append("  <LastAuthor></LastAuthor>\n");
    html.append(QString("  <Created>%1</Created>\n").arg(QDateTime::currentDateTime().toString("yyyy-MM-dd HH:mm:ss")));
    html.append("  <Version>11.6360</Version>\n");
    html.append(" </DocumentProperties>\n");

    html.append(" <OfficeDocumentSettings xmlns=\"urn:schemas-microsoft-com:office:office\">\n");
    html.append("  <AllowPNG/>\n");
    html.append(" </OfficeDocumentSettings>\n");

    html.append(" <ExcelWorkbook xmlns=\"urn:schemas-microsoft-com:office:excel\">\n");
    html.append("  <WindowHeight>9795</WindowHeight>\n");
    html.append("  <WindowWidth>21435</WindowWidth>\n");
    html.append("  <WindowTopX>120</WindowTopX>\n");
    html.append("  <WindowTopY>75</WindowTopY>\n");
    html.append("  <WindowTopY>75</WindowTopY>\n");
    html.append("  <ProtectWindows>False</ProtectWindows>\n");
    html.append(" </ExcelWorkbook>\n");

    //樣式表
    html.append(" <Styles>\n");
    html.append("  <Style ss:ID=\"Default\" ss:Name=\"Normal\">\n");
    html.append("   <Alignment ss:Horizontal=\"Center\" ss:Vertical=\"Center\"/>\n");
    html.append("   <Borders/>\n");
    html.append("   <Font ss:FontName=\"微軟雅黑\" x:CharSet=\"134\" ss:Size=\"10\" ss:Color=\"#000000\"/>\n");
    html.append("   <Interior/>\n");
    html.append("   <NumberFormat/>\n");
    html.append("   <Protection/>\n");
    html.append("  </Style>\n");

    //標題樣式居中大號加粗字體
    html.append("  <Style ss:ID=\"s_title\">\n");
    html.append("   <Alignment ss:Horizontal=\"Center\" ss:Vertical=\"Center\"/>\n");
    checkBorder(border);
    html.append("   <Font ss:FontName=\"微軟雅黑\" x:CharSet=\"134\" ss:Size=\"11\" ss:Color=\"#000000\" ss:Bold=\"1\"/>\n");
    html.append("  </Style>\n");

    //標題樣式--左對齊普通字體
    html.append("  <Style ss:ID=\"s_subtitle\">\n");
    html.append("   <Alignment ss:Horizontal=\"Left\" ss:Vertical=\"Center\"/>\n");
    checkBorder(border);
    html.append("   <Font ss:FontName=\"微軟雅黑\" x:CharSet=\"134\" ss:Size=\"10\" ss:Color=\"#000000\" ss:Bold=\"0\"/>\n");
    html.append("  </Style>\n");

    //正文樣式
    html.append("  <Style ss:ID=\"s_normal\">\n");
    checkBorder(border);
    html.append(" </Style>\n");

    //正文樣式--文字紅色
    html.append("  <Style ss:ID=\"s_red\">\n");
    checkBorder(border);
    html.append("  <Font ss:FontName=\"微軟雅黑\" x:CharSet=\"134\" ss:Size=\"10\" ss:Color=\"#FF0000\" ss:Bold=\"0\"/>\n");
    html.append(" </Style>\n");

    html.append(" </Styles>\n");

    //工作表名稱
    html.append(QString(" <Worksheet ss:Name=\"%1\">\n").arg(sheetName));

    //表格開始
    html.append(QString("  <Table ss:ExpandedColumnCount=\"%1\" x:FullColumns=\"1\"\n").arg(columnCount));
    html.append("   x:FullRows=\"1\" ss:DefaultColumnWidth=\"54\" ss:DefaultRowHeight=\"18\">\n");

    //設置字段寬度
    for (int i = 0; i < columnCount; i++) {
        html.append(QString("   <Column ss:AutoFitWidth=\"0\" ss:Width=\"%1\"/>\n").arg(columnWidths.at(i)));
    }

    //表格標題
    if (title.length() > 0) {
        html.append("   <Row ss:AutoFitHeight=\"0\" ss:Height=\"22\">\n");
        html.append(QString("    <Cell ss:MergeAcross=\"%1\" ss:StyleID=\"s_title\"><Data ss:Type=\"String\">%2</Data></Cell>\n")
                    .arg(columnCount - 1).arg(title));
        html.append("   </Row>");
    }

    //表格副標題
    if (subTitle.length() > 0) {
        html.append("   <Row ss:AutoFitHeight=\"0\" ss:Height=\"18\">\n");
        html.append(QString("    <Cell ss:MergeAcross=\"%1\" ss:StyleID=\"s_subtitle\"><Data ss:Type=\"String\">%2</Data></Cell>\n")
                    .arg(columnCount - 1).arg(subTitle));
        html.append("   </Row>");
    }

    //逐個添加字段名稱
    if (columnCount > 0) {
        html.append("   <Row ss:AutoFitHeight=\"0\">\n");
        for (int i = 0; i < columnCount; i++) {
            html.append(QString("    <Cell ss:StyleID=\"s_normal\"><Data ss:Type=\"String\">%1</Data></Cell>\n")
                        .arg(columnNames.at(i)));
        }
        html.append("   </Row>\n");
    }

    //逐個添加數據
    for (int i = 0; i < rowCount; i++) {
        html.append("   <Row ss:AutoFitHeight=\"0\">\n");

        QString temp = content.at(i);
        QStringList value = temp.split(";");

        if (check) {
            //如果是歷史記錄則文字紅色
            if (value.at(value.count() - 1) == "歷史記錄") {
                foreach (QString str, value) {
                    html.append(QString("    <Cell ss:StyleID=\"s_red\"><Data ss:Type=\"String\">%1</Data></Cell>\n").arg(str));
                }
            } else {
                foreach (QString str, value) {
                    html.append(QString("    <Cell ss:StyleID=\"s_normal\"><Data ss:Type=\"String\">%1</Data></Cell>\n").arg(str));
                }
            }
        } else {
            foreach (QString str, value) {
                html.append(QString("    <Cell ss:StyleID=\"s_normal\"><Data ss:Type=\"String\">%1</Data></Cell>\n").arg(str));
            }
        }

        html.append("   </Row>\n");
    }

    html.append("  </Table>\n");

    //固定結尾格式
    html.append("  <WorksheetOptions xmlns=\"urn:schemas-microsoft-com:office:excel\">\n");
    html.append("   <PageSetup>\n");
    html.append("    <Header x:Margin=\"0.3\"/>\n");
    html.append("    <Footer x:Margin=\"0.3\"/>\n");
    html.append("    <PageMargins x:Bottom=\"0.75\" x:Left=\"0.7\" x:Right=\"0.7\" x:Top=\"0.75\"/>\n");
    html.append("   </PageSetup>\n");
    html.append("   <Unsynced/>\n");
    html.append("   <Selected/>\n");
    html.append("   <ProtectObjects>False</ProtectObjects>\n");
    html.append("   <ProtectScenarios>False</ProtectScenarios>\n");
    html.append("  </WorksheetOptions>\n");
    html.append(" </Worksheet>\n");
    html.append("</Workbook>\n");

    //寫入文件
    QFile file(fileName);
    if (file.open(QFile::WriteOnly | QIODevice::Text)) {
        QTextStream text(&file);
        text.setCodec("UTF-8");
        text << html.join("");
    }
}

void ExcelAPI::ToExcel(QString fileName, QString sheetName, QString title,
                       QList<QString> columnNames, QList<int> columnWidths,
                       QStringList subTitle1, QStringList subTitle2,
                       QStringList content, bool border, bool check)
{
    if (sheetName.length() == 0) {
        sheetName = "Sheet1";
    }

    //計算列數
    int columnCount = columnNames.count();

    //逐個拼接xml字符,再保存爲xls文件
    //清空原有數據,確保每次都是新的數據
    html.clear();

    //固定頭部信息
    html.append("<?xml version=\"1.0\"?>\n");
    html.append("<?mso-application progid=\"Excel.Sheet\"?>\n");
    html.append("<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\"\n");
    html.append(" xmlns:o=\"urn:schemas-microsoft-com:office:office\"\n");
    html.append(" xmlns:x=\"urn:schemas-microsoft-com:office:excel\"\n");
    html.append(" xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\"\n");
    html.append(" xmlns:html=\"http://www.w3.org/TR/REC-html40\">\n");

    //文檔信息
    html.append(" <DocumentProperties xmlns=\"urn:schemas-microsoft-com:office:office\">\n");
    html.append(QString("  <LastAuthor>%1</LastAuthor>\n").arg(""));
    html.append(QString("  <Created>%1</Created>\n").arg(QDateTime::currentDateTime().toString("yyyy-MM-dd HH:mm:ss")));
    html.append("  <Version>11.6360</Version>\n");
    html.append(" </DocumentProperties>\n");

    html.append(" <OfficeDocumentSettings xmlns=\"urn:schemas-microsoft-com:office:office\">\n");
    html.append("  <AllowPNG/>\n");
    html.append(" </OfficeDocumentSettings>\n");

    html.append(" <ExcelWorkbook xmlns=\"urn:schemas-microsoft-com:office:excel\">\n");
    html.append("  <WindowHeight>9795</WindowHeight>\n");
    html.append("  <WindowWidth>21435</WindowWidth>\n");
    html.append("  <WindowTopX>120</WindowTopX>\n");
    html.append("  <WindowTopY>75</WindowTopY>\n");
    html.append("  <WindowTopY>75</WindowTopY>\n");
    html.append("  <ProtectWindows>False</ProtectWindows>\n");
    html.append(" </ExcelWorkbook>\n");

    //樣式表
    html.append(" <Styles>\n");
    html.append("  <Style ss:ID=\"Default\" ss:Name=\"Normal\">\n");
    html.append("   <Alignment ss:Horizontal=\"Center\" ss:Vertical=\"Center\"/>\n");
    html.append("   <Borders/>\n");
    html.append("   <Font ss:FontName=\"微軟雅黑\" x:CharSet=\"134\" ss:Size=\"10\" ss:Color=\"#000000\"/>\n");
    html.append("   <Interior/>\n");
    html.append("   <NumberFormat/>\n");
    html.append("   <Protection/>\n");
    html.append("  </Style>\n");

    //標題樣式居中大號加粗字體
    html.append("  <Style ss:ID=\"s_title\">\n");
    html.append("   <Alignment ss:Horizontal=\"Center\" ss:Vertical=\"Center\"/>\n");
    checkBorder(border);
    html.append("   <Font ss:FontName=\"微軟雅黑\" x:CharSet=\"134\" ss:Size=\"11\" ss:Color=\"#000000\" ss:Bold=\"1\"/>\n");
    html.append("  </Style>\n");

    //標題樣式--左對齊普通字體
    html.append("  <Style ss:ID=\"s_subtitle\">\n");
    html.append("   <Alignment ss:Horizontal=\"Left\" ss:Vertical=\"Center\"/>\n");
    checkBorder(border);
    html.append("   <Font ss:FontName=\"微軟雅黑\" x:CharSet=\"134\" ss:Size=\"10\" ss:Color=\"#000000\" ss:Bold=\"0\"/>\n");
    html.append("  </Style>\n");

    //正文樣式
    html.append("  <Style ss:ID=\"s_normal\">\n");
    checkBorder(border);
    html.append(" </Style>\n");

    //正文樣式--文字紅色
    html.append("  <Style ss:ID=\"s_red\">\n");
    checkBorder(border);
    html.append("  <Font ss:FontName=\"微軟雅黑\" x:CharSet=\"134\" ss:Size=\"10\" ss:Color=\"#FF0000\" ss:Bold=\"0\"/>\n");
    html.append(" </Style>\n");

    html.append(" </Styles>\n");

    //工作表名稱
    html.append(QString(" <Worksheet ss:Name=\"%1\">\n").arg(sheetName));

    //表格開始
    html.append(QString("  <Table ss:ExpandedColumnCount=\"%1\" x:FullColumns=\"1\"\n").arg(columnCount));
    html.append("   x:FullRows=\"1\" ss:DefaultColumnWidth=\"54\" ss:DefaultRowHeight=\"18\">\n");

    //設置字段寬度
    for (int i = 0; i < columnCount; i++) {
        html.append(QString("   <Column ss:AutoFitWidth=\"0\" ss:Width=\"%1\"/>\n").arg(columnWidths.at(i)));
    }

    //表格標題
    if (title.length() > 0) {
        html.append("   <Row ss:AutoFitHeight=\"0\" ss:Height=\"22\">\n");
        html.append(QString("    <Cell ss:MergeAcross=\"%1\" ss:StyleID=\"s_title\"><Data ss:Type=\"String\">%2</Data></Cell>\n")
                    .arg(columnCount - 1).arg(title));
        html.append("   </Row>");
    }

    //循環添加副標題/字段名/內容
    int count = content.count();
    for (int i = 0; i < count; i++) {
        //加個空行隔開
        html.append("   <Row ss:AutoFitHeight=\"0\">\n");
        html.append("   </Row>");

        //副標題1
        if (subTitle1.count() > 0 && subTitle1.count() > i) {
            if (subTitle1.at(i).length() > 0) {
                html.append("   <Row ss:AutoFitHeight=\"0\" ss:Height=\"18\">\n");
                html.append(QString("    <Cell ss:MergeAcross=\"%1\" ss:StyleID=\"s_subtitle\"><Data ss:Type=\"String\">%2</Data></Cell>\n")
                            .arg(columnCount - 1).arg(subTitle1.at(i)));
                html.append("   </Row>");
            }
        }

        //副標題2
        if (subTitle2.count() > 0 && subTitle2.count() > i) {
            if (subTitle2.at(i).length() > 0) {
                html.append("   <Row ss:AutoFitHeight=\"0\" ss:Height=\"18\">\n");
                html.append(QString("    <Cell ss:MergeAcross=\"%1\" ss:StyleID=\"s_subtitle\"><Data ss:Type=\"String\">%2</Data></Cell>\n")
                            .arg(columnCount - 1).arg(subTitle2.at(i)));
                html.append("   </Row>");
            }
        }

        //逐個添加字段名稱
        if (columnCount > 0) {
            html.append("   <Row ss:AutoFitHeight=\"0\">\n");
            for (int j = 0; j < columnCount; j++) {
                html.append(QString("    <Cell ss:StyleID=\"s_normal\"><Data ss:Type=\"String\">%1</Data></Cell>\n").arg(columnNames.at(j)));
            }
            html.append("   </Row>\n");
        }

        QStringList list = content.at(i).split(";");

        //逐個添加數據
        int rowCount = list.count();
        for (int j = 0; j < rowCount; j++) {
            html.append("   <Row ss:AutoFitHeight=\"0\">\n");
            QString temp = list.at(j);
            QStringList value = temp.split("|");
            int valueCount = value.count();

            if (check) {
                //如果是歷史記錄則文字紅色
                if (value.at(valueCount - 1) == "1") {
                    for (int k = 0; k < valueCount - 1; k++) {
                        html.append(QString("    <Cell ss:StyleID=\"s_red\"><Data ss:Type=\"String\">%1</Data></Cell>\n")
                                    .arg(value.at(k)));
                    }
                } else {
                    for (int k = 0; k < valueCount - 1; k++) {
                        html.append(QString("    <Cell ss:StyleID=\"s_normal\"><Data ss:Type=\"String\">%1</Data></Cell>\n")
                                    .arg(value.at(k)));
                    }
                }
            } else {
                for (int k = 0; k < valueCount; k++) {
                    html.append(QString("    <Cell ss:StyleID=\"s_normal\"><Data ss:Type=\"String\">%1</Data></Cell>\n")
                                .arg(value.at(k)));
                }
            }

            html.append("   </Row>\n");
        }
    }

    html.append("  </Table>\n");

    //固定結尾格式
    html.append("  <WorksheetOptions xmlns=\"urn:schemas-microsoft-com:office:excel\">\n");
    html.append("   <PageSetup>\n");
    html.append("    <Header x:Margin=\"0.3\"/>\n");
    html.append("    <Footer x:Margin=\"0.3\"/>\n");
    html.append("    <PageMargins x:Bottom=\"0.75\" x:Left=\"0.7\" x:Right=\"0.7\" x:Top=\"0.75\"/>\n");
    html.append("   </PageSetup>\n");
    html.append("   <Unsynced/>\n");
    html.append("   <Selected/>\n");
    html.append("   <ProtectObjects>False</ProtectObjects>\n");
    html.append("   <ProtectScenarios>False</ProtectScenarios>\n");
    html.append("  </WorksheetOptions>\n");
    html.append(" </Worksheet>\n");
    html.append("</Workbook>\n");

    //寫入文件
    QFile file(fileName);
    if (file.open(QFile::WriteOnly | QIODevice::Text)) {
        QTextStream text(&file);
        text.setCodec("UTF-8");
        text << html.join("");
    }
}

使用案例

void frmAlarm::on_btnExcel_clicked()
{
    QString type = "所有告警記錄";
    QString defaultName = QString("%1/%2.xls").arg(App::AppPath).arg(STRDATETIME);
    QString file =  QFileDialog::getSaveFileName(this, "保存文件", defaultName, "Excel(*.xls)");

    if (file.length() == 0) {
        return;
    }

    QStringList content = GetContent();
    int rowCount = content.count();

    //判斷數據量是否超過10000條,超過則彈出提示
    if (rowCount > 10000) {
        QString msg = QString("要導出的數據共 %1 條,請耐心等待!確定要導出數據嗎?").arg(rowCount);
        if (myHelper::ShowMessageBoxQuestion(msg) != 1) {
            return;
        }
    }

    QList<int> columnWidths;
    columnWidths.append(150);
    columnWidths.append(120);
    columnWidths.append(180);
    columnWidths.append(100);
    columnWidths.append(150);

    ExcelAPI::Instance()->ToExcel(file, type, type, "", columnNames, columnWidths, content, true, false);

    QString msg = QString("導出%1到Excel").arg(type);
    DBHelper::AddEventInfoUser(msg);

    if (myHelper::ShowMessageBoxQuestion(msg + "成功!確定現在就打開嗎?") == 1) {
        QString url = QString("file:///%1").arg(file);
        QDesktopServices::openUrl(QUrl(url, QUrl::TolerantMode));
    }
}

十八、QT之導出數據到EXCEL

ExcelAPI.h

ExcelAPI.cpp

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