generate qrcode zip

generate_qrcode.js

function testpage(req, res) {
    const Archiver = require('archiver');
    const http = require('http');
    const Stream = require('stream').Transform;
    const zip = Archiver('zip');
    const ids = [1, 2, 3];
    const merchant_id = 57;
    const store_id = 278;
    const gzid = 100123;
    res.writeHead(200, {
      'Content-Type': 'application/zip',
      'Content-disposition': 'attachment; filename=iamges.zip'
    });

    zip.pipe(res);
    //zip.append('1231231231', {name: 'test_zip/1.txt'}).finalize();


    async.mapSeries(ids, getImage, function (err, results) {
      // results is now an array of stats for each file
      console.info('done', arguments);
      zip.finalize();
    });
    function getImage(id, callback) {
      var url = `http://xx.com/qrcode/siteno?store_id=${store_id}&siteno=${id}&gzid=${gzid}`;
      //const content_url = encodeURIComponent(`https://wechat.web.huofu.com/weixin/meal/menu?merchant_id=${merchant_id}&store_id=${store_id}&nofetch=1&sitno=${id}`);
      //const url = `http://test.wechat.web.huofu.com/qrcode?content=${content_url}&width=1024&margin=0`;
      http.request(url, function (response) {
        var data = new Stream();

        response.on('data', function (chunk) {
          data.push(chunk);
        });

        response.on('end', function () {
          zip.append(data.read(), {name: `你好/${id}.png`});
          callback();
        });
      }).end();
    }
  }