libharu 中文问题

参考:Haru Free PDF Library

1.libharu两种简体

(SimSun,SimHei)

2.libharu一种繁体

(MingLiU) 

3.下面是结合xlnt生成pdf

#include <iostream>
#include <xlnt/xlnt.hpp>
#include <Windows.h>
#include <wchar.h>
#include <hpdf/hpdf.h>
#include <iostream>

using namespace std;



//UTF-8编码格式字符串 转普通sting类型
std::string UTF8_To_string(const std::string& str)
{
	int nwLen = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, NULL, 0);

	wchar_t* pwBuf = new wchar_t[nwLen + 1];//一定要加1，不然会出现尾巴
	memset(pwBuf, 0, nwLen * 2 + 2);

	MultiByteToWideChar(CP_UTF8, 0, str.c_str(), str.length(), pwBuf, nwLen);

	int nLen = WideCharToMultiByte(CP_ACP, 0, pwBuf, -1, NULL, NULL, NULL, NULL);

	char* pBuf = new char[nLen + 1];
	memset(pBuf, 0, nLen + 1);

	WideCharToMultiByte(CP_ACP, 0, pwBuf, nwLen, pBuf, nLen, NULL, NULL);

	std::string retStr = pBuf;

	delete[]pBuf;
	delete[]pwBuf;

	pBuf = NULL;
	pwBuf = NULL;

	return retStr;
}


void error_handler(HPDF_STATUS error_no, HPDF_STATUS detail_no, void* user_data) {
    std::cerr << "Error: " << error_no << ", detail: " << detail_no << std::endl;
}

int main() {
    // 加载 Excel 文件
    xlnt::workbook wb;
    try {
        wb.load("example.xlsx");
    }
    catch (const std::exception& e) {
        std::cerr << "无法加载 Excel 文件: " << e.what() << std::endl;
        return 1;
    }

    // 创建 PDF 文档
    HPDF_Doc pdf = HPDF_New(error_handler, nullptr);
    if (!pdf) {
        std::cerr << "无法创建 PDF 文档" << std::endl;
        return 1;
    }

    HPDF_UseCNSFonts(pdf);
    HPDF_UseCNSEncodings(pdf);
    HPDF_Font hfont = HPDF_GetFont(pdf, "SimSun", "GB-EUC-H");
    

    HPDF_SetCompressionMode(pdf, HPDF_COMP_ALL);
    HPDF_Page page = HPDF_AddPage(pdf);


    HPDF_Page_SetSize(page, HPDF_PAGE_SIZE_A4, HPDF_PAGE_PORTRAIT);
    HPDF_Page_SetFontAndSize(page, hfont, 12);

    // 读取 Excel 内容并写入 PDF
    float y_position = 800;
    for (auto sheet : wb) {
        std::string sheet_title_gbk = UTF8_To_string(sheet.title());

        HPDF_Page_BeginText(page);
        HPDF_Page_MoveTextPos(page, 50, y_position);
        HPDF_Page_ShowText(page, sheet_title_gbk.c_str());
        HPDF_Page_EndText(page);
        y_position -= 20;

        for (auto row : sheet.rows()) {
            std::string row_text;
            for (auto cell : row) {
                std::string cell_content_gbk = UTF8_To_string(cell.to_string());
                row_text += cell_content_gbk + "\t";
            }

            HPDF_Page_BeginText(page);
            HPDF_Page_MoveTextPos(page, 50, y_position);
            HPDF_Page_ShowText(page, row_text.c_str());
            HPDF_Page_EndText(page);

            y_position -= 20;
            if (y_position < 50) { // 创建新页
                page = HPDF_AddPage(pdf);
                HPDF_Page_SetSize(page, HPDF_PAGE_SIZE_A4, HPDF_PAGE_PORTRAIT);
                HPDF_Page_SetFontAndSize(page, hfont, 12);
                y_position = 800;
            }
        }
    }

    // 保存 PDF
    HPDF_SaveToFile(pdf, "output.pdf");
    HPDF_Free(pdf);

    std::cout << "Excel 已成功转换为 PDF。" << std::endl;
    return 0;
}

其中关键点在于：

    HPDF_UseCNSFonts(pdf);
    HPDF_UseCNSEncodings(pdf);
    HPDF_Font hfont = HPDF_GetFont(pdf, "SimSun", "GB-EUC-H");

样例与格式就参考官方文档