node 下载图片 -- 1

download_methods.js

// 1、内置https+fs下载
const fs = require('fs')
const https = require('https')

const url = 'GFG.jpeg'

https.get(url, (res) => {
  const path = `${__dirname}/files/img.jpeg`
  const filePath = fs.createWriteStream(path)
  res.pipe(filePath)
  filePath.on('finish', () => {
    filePath.close()
    console.log('Download Completed')
  })
})

// 2、download下载图片
const download = require('download')

const file = 'GFG.jpeg'
const filePath = `${__dirname}/files`

download(file, filePath).then(() => {
  console.log('Download Completed')
})

// 3、node-downloader-helper下载
const { DownloaderHelper } = require('node-downloader-helper')

const file = 'GFG.jpeg'
const filePath = `${__dirname}/files`

const dl = new DownloaderHelper(file, filePath)

dl.on('end', () => console.log('Download Completed'))
dl.start()

package.json

{
  "devDependencies": {
    // 从网页获取图片地址列表的包
    "axios": "4.2",
    "cheerio": "^11.0.0",
    // 下载图片的包
    "node-downloader-helper": "10.2", // 监听事件得知下载结束
    "download": "^8.3.17" // Promise形式，结束后then中接受到值
  }
}