node下载网络图片

通过网络url下载图片

环境：node

代码

// 下载网络图片
const fs = require('fs');
const request = require('request')
const dowImg = (path, url) => new Promise((r, j) => {
  console.log('读取', path, url);
  var src = url;
  var writeStream = fs.createWriteStream(path); //图片存放位置，及名称
  var readStream = request(src)
  readStream.pipe(writeStream);
  readStream.on('end', function () {
    console.log('文件下载成功');
  });
  readStream.on('error', function () {
    console.log("错误信息:" + err)
    j(err)
  })
  writeStream.on("finish", function () {
    console.log("写入", path);
    r('下载成功', path)
    writeStream.end();
  });
})
module.exports = dowImg
//使用说明
//回调(图片名称) 图片网络地址， 图片路径, 名称
// dowImg(res => {
//     console.log('图片1' , res)
// }, 'https://cloud-minapp-15402.cloud.ifanrusercontent.com/1ft3LAyONcMhURHl.jpeg', randomString(16))