qt读取excel表格文件内容。

今天主要实现功能是点击按钮可以选择一个excel表格文件并读取表格里面的内容。

代码链接：https://download.csdn.net/download/weixin_39770778/10574778

我们先用QtCreator新建一个工程(工程路径不能出现中文)。然后添加一个名为importfile的类。贴出importfile.h

#ifndef IMPORTFILES_H
#define IMPORTFILES_H

#include <QStandardItemModel>
#include <QStandardItem>
#include <QString>
#include <QFile>
#include <QDir>
#include <QFileDialog>
#include <QStandardPaths>
#include <QMessageBox>
#include <QThread>
#include <ActiveQt\QAxObject>
#include <ActiveQt\QAxWidget>
#include <QMessageBox>
#include <vector>
#include <string>
#include <qt_windows.h>
#include<Qdebug>

using namespace std;

class importFiles : public QThread //为了不和界面操作冲突，用另外一个进程了进行读取excel
{
public:
    importFiles();
    ~importFiles();
public:
    int GetFileContent(QString filename);

    int m_state = 2;
    vector<vector<QString> > fileContent;
};


#endif // !IMPORTFILES_H

接下来是importfiles.cpp的内容

#include "importFiles.h"

importFiles::importFiles()
{
}

importFiles::~importFiles()
{
}

int importFiles::GetFileContent(QString filename)
{
    QString Text;
    CoInitializeEx(NULL, COINIT_MULTITHREADED);
    //fileContent.clear();
    QAxObject* excel = new QAxObject();
    if (!excel->setControl("Excel.Application"))//判断是否成功连接excel文件
    {
        delete excel;
        excel = NULL;
        CoUninitialize();
        return -2;
    }
    excel->setProperty("Visible", false);
    QAxObject* work_books = excel->querySubObject("WorkBooks");
    work_books->dynamicCall("Open (const QString&)", filename);
    if (work_books == NULL)
    {
        excel->dynamicCall("Quit(void)"); //退出
        delete excel;
        excel = NULL;
        CoUninitialize();
        return -1;
    }
    QAxObject* work_book = excel->querySubObject("ActiveworkBook");
    if (work_book == NULL)
    {
        work_books->dynamicCall("Close(Boolean)", false); //关闭文件
        excel->dynamicCall("Quit(void)"); //退出
        delete work_books;
        work_books = NULL;
        delete excel;
        excel = NULL;
        CoUninitialize();
        return -1;
    }
    QAxObject* work_sheets = work_book->querySubObject("Worksheets(int)", 1);  //Sheets也可换用WorkSheets
    QAxObject *work_sheet = work_book->querySubObject("Sheets(int)", 1);
    QAxObject *used_range = work_sheet->querySubObject("UsedRange");
    QAxObject *rows = used_range->querySubObject("Rows");
    QAxObject *columns = used_range->querySubObject("Columns");
    int row_count = rows->property("Count").toInt();  //获取行数
    int col_count = columns->property("Count").toInt();  //获取列数

    for (int i = 1; i < row_count; i++)
    {
        for (int j = 0; j < col_count; j++)
        {
            Text = work_sheet->querySubObject("Cells(int,int)",i+1,j+1)->dynamicCall("Value").toString();

            qDebug() <<Text;
        }
    }

    work_books->dynamicCall("Close(Boolean)", false);
    excel->dynamicCall("Quit(void)"); //退出
    delete work_books;
    work_books = NULL;
    delete excel;
    excel = NULL;
    CoUninitialize();


    return 1;
}

然后在界面ui上面拖一个按钮，转到槽后的内容如下：

m_file =QFileDialog::getOpenFileName(this, "打开", QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation), "表格文件( *.xlsx)");
//这里是打开文件里面包括了你要打开的文件格式


 impor->GetFileContent(m_file); //调用imporfile类里面的读取excel文件的内容函数

因为我们用到了QAxObject 类，所以我们要在pro文件里面添加一行 QT += axcontainer

qt读取excel表格文件内容。

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