nodejs用html转成pdf

sudo apt-get install wkhtmltopdf

npm install pdfkit

npm install fs

const pdfkit = require('pdfkit');
const fs = require('fs');
const wkhtmltopdf = require('wkhtmltopdf');

// 生成 PDF
function generatePDF(html, options, callback) {
    // 创建文件流
    const inputStream = fs.createReadStream(html);

    // 调用 wkhtmltopdf
    wkhtmltopdf(inputStream, options, (error, stream) => {
        if (error) {
            callback(error);
        } else {
            callback(null, stream);
        }
    });
}

// 写 PDF
function writePDF(doc, path, callback) {
    const writeStream = fs.createWriteStream(path);

    writeStream.on('error', (error) => {
        callback(error);
    });

    doc.pipe(writeStream);

    doc.end();
}

// 创建 PDF
function createPDF(html, path, options, callback) {
    const doc = new pdfkit();

    generatePDF(html, options, (error, stream) => {
        if (error) {
            callback(error);
        } else {
            doc.on('pageAdded', () => {
                doc.image(stream, {
                    fit: [doc.page.width - 100, doc.page.height - 100],
                    align: 'center',
                    valign: 'center'
                });
            });

            doc.pipe(fs.createWriteStream(path));

            doc.end();

            callback(null, path);
        }
    });
}

// 导出模块
module.exports = {
    createPDF,
    writePDF,
    generatePDF
};

node html-to-pdf.js

const htmlToPdf = require('./html-to-pdf');

htmlToPdf.createPDF('test.html', 'test.pdf', {
   pageSize: 'letter',
   marginTop: '0mm',
   marginBottom: '0mm',
   marginLeft: '0mm',
   marginRight: '0mm'
}, (err, result) => {
   if (err) {
      console.error(err);
      return;
   }
   console.log('File saved to: ' + result);
});