使用puppeteer和node.js下载'data:‘图像/文件

const puppeteer = require('puppeteer');
const fs = require('fs');

async function downloadDataUrl(url, outputPath) {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.goto(url);

  const dataUrl = await page.evaluate(() => {
    return document.querySelector('img').src;
  });

  const data = dataUrl.split(',')[1];
  const buffer = Buffer.from(data, 'base64');

  fs.writeFileSync(outputPath, buffer);

  await browser.close();
}

const url = 'data:image/png;base64,iVBORw0KG...'; // 替换为你要下载的'data:'图像/文件的URL
const outputPath = 'output.png'; // 替换为你要保存的文件路径

downloadDataUrl(url, outputPath)
  .then(() => {
    console.log('文件下载成功');
  })
  .catch((error) => {
    console.error('文件下载失败:', error);
  });