使用xlnt 讀寫excel文件

環境 win10 64位 VS2017 64位 cmake 3.12.2 64位

1.生成空的項目

vs2017 文件->新建-->其他-->空項目-->ddxls(C:\Users\Administrator\source\repos\ddxls)

• 添加demo.cpp文件
  • 項目-->右鍵-->添加新項 -->demo.cpp

2.給項目配置xlnt

- 項目右鍵點擊，然後選擇最下方的屬性按鈕，打開配置的窗口
- 1. 配置頭文件路徑的配置
    配置屬性-VC++目錄-引用目錄
    填入 xlnt-master\include
- 2. 第三方庫庫文件路徑
    配置屬性-VC++目錄-庫目錄
    填入 xlnt-master\build\source\Debug
- 3. 引用庫名稱的配置 
配置屬性-連接器-依賴-附加依賴項
填入 xlntd.lib

- 4.給項目添加動態鏈接庫
 複製xlntd.dll放到你的項目文件夾中去 （將xlnt-master\include下的 xlnt文件夾也複製到項目文件夾"C:\Users\Administrator\source\repos\ddxls\ddxls中去"

3.在demo.cpp添加代碼

#include <iostream>
#include "xlnt/xlnt.hpp"
#include <string.h>
#include <stdio.h>
#define _CRT_SECURE_NO_WARNINGS
#include <vector>
#include <string>

int main()
{
    //Creating a 2 dimensional vector which we will write values to
    std::vector< std::vector<std::string> > wholeWorksheet;
    //Looping through each row (100 rows as per the second argument in the for loop)
    for (int outer = 0; outer < 100; outer++)
    {
        //Creating a fresh vector for a fresh row
        std::vector<std::string> singleRow;
        //Looping through each of the columns (100 as per the second argument in the for loop) in this particular row
        for (int inner = 0; inner < 100; inner++)
        {
            //Adding a single value in each cell of the row 
            std::string val = std::to_string(inner + 1);
            singleRow.push_back(val);
        }
        //Adding the single row to the 2 dimensional vector
        wholeWorksheet.push_back(singleRow);
        std::clog << "Writing to row " << outer << " in the vector " << std::endl;
    }
    //Writing to the spread sheet
    //Creating the output workbook 
    std::clog << "Creating workbook" << std::endl;
    xlnt::workbook wbOut;
    //Setting the destination output file name
    std::string dest_filename = "output.xlsx";
    //Creating the output worksheet
    xlnt::worksheet wsOut = wbOut.active_sheet();
    //Giving the output worksheet a title/name
    wsOut.title("data");
    //We will now be looping through the 2 dimensional vector which we created above
    //In this case we have two iterators one for the outer loop (row) and one for the inner loop (column)
    std::clog << "Looping through vector and writing to spread sheet" << std::endl;
    for (int fOut = 0; fOut < wholeWorksheet.size(); fOut++)
    {
        std::clog << "Row" << fOut << std::endl;
        for (int fIn = 0; fIn < wholeWorksheet.at(fOut).size(); fIn++)
        {
            //Take notice of the difference between accessing the vector and accessing the work sheet
        //As you may already know Excel spread sheets start at row 1 and column 1 (not row 0 and column 0 like you would expect from a C++ vector) 
        //In short the xlnt cell reference starts at column 1 row 1 (hence the + 1s below) and the vector reference starts at row 0 and column 0
            wsOut.cell(xlnt::cell_reference(fIn + 1, fOut + 1)).value(wholeWorksheet.at(fOut).at(fIn));
            //Further clarification to avoid confusion
            //Cell reference arguments are (column number, row number); e.g. cell_reference(fIn + 1, fOut + 1)
            //Vector arguments are (row number, column number); e.g. wholeWorksheet.at(fOut).at(fIn)
        }
    }
    std::clog << "Finished writing spread sheet" << std::endl;
    wbOut.save(dest_filename);
    return 0;

}

4. 生成 --> 編譯 或者直接點擊 本地調試器完成調試