Node.js Buffer All In One
Buffer.from
https://nodejs.org/api/buffer.html#buffer
ArrayBuffer
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer
https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer
demos
const fs = require("fs");
var path = require("path");
const { exit } = require("process");
// axios
const axios = require("axios");
const log = console.log;
var folder = path.resolve(__dirname, '../pdf');
// log('folder', folder);
if (!fs.existsSync(folder)) {
fs.mkdirSync(folder);
}
async function downloadPDF(url, filename) {
log('? pdf downloading ...');
axios({
method: 'get',
url,
responseType: 'arraybuffer',
// responseType: 'stream',
// responseType: 'document',
})
.then((response) => {
console.log(`response`, response.data)
// ✅
let pdfBuffer = Buffer.from(response.data, 'binary');
fs.writeFileSync(filename, pdfBuffer);
log('✅ pdf finished!');
});
}
const url = 'https://cs193p.sites.stanford.edu/sites/g/files/sbiybj16636/files/media/file/l1.pdf';
const filename = folder + '/cs193p-2021-l1.pdf';
log('filename =', filename);
downloadPDF(url, filename);
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