QT cmake工程使用QXlsx源码操作execl，无需编译QXlsx，也不需要下载其他东西，windows和ubuntu都可以

cmake_minimum_required(VERSION 3.5)

project(xlsxTest LANGUAGES CXX)

set(CMAKE_INCLUDE_CURRENT_DIR ON)

set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(QT NAMES Qt6 Qt5 COMPONENTS Widgets Core Gui REQUIRED)
find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Core Widgets Gui REQUIRED)

add_subdirectory(QXlsx)  #添加

if(ANDROID)
  add_library(xlsxTest SHARED
    main.cpp
    mainwindow.cpp
    mainwindow.h
    mainwindow.ui
  )
else()
  add_executable(xlsxTest
    main.cpp
    mainwindow.cpp
    mainwindow.h
    mainwindow.ui
  )
endif()

target_link_libraries(xlsxTest PRIVATE Qt5::Widgets QXlsx::QXlsx)  #增加 QXlsx::QXlsx

#include "mainwindow.h"
#include "./ui_mainwindow.h"

#include <QCoreApplication>
#include <QDebug>
#include <QDir>
#include <QVariant>
#include <QtCore>
#include <QtGlobal>

#include "xlsxcellrange.h"
#include "xlsxchart.h"
#include "xlsxchartsheet.h"
#include "xlsxdocument.h"
#include "xlsxrichstring.h"
#include "xlsxworkbook.h"


MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

       // 第一步：定义xlsw
       QXlsx::Document xlsxR("Test.xlsx");

       // 第二布：加载
       if (xlsxR.load()) // load excel file
       {
           xlsxR.selectSheet(xlsxR.sheetNames()[0]);
           QXlsx::CellRange range = xlsxR.dimension();

           // 第三步：遍历，获取数据
           for(int i =1;i<=range.columnCount();i++)
           {
               for(int j =1;j<=range.rowCount();++j)
               {   
                   if(xlsxR.cellAt(j,i))
                   {
                       // 遍历行和列，拿到数据 ：xlsxR.cellAt(i,j)->value().toInt()
                       qDebug()<< xlsxR.cellAt(j,i)->value().toByteArray();
                   }
               }
           }

       } else {
           qDebug() << "打开文件失败";
       }

}

MainWindow::~MainWindow()
{
    delete ui;
}