文件系统不下载映像

Question

let request = require("request")
let fs = require("fs")

let links = [...]
const download = function(uri, filename, callback){
    request.head(uri, function(err, res, body){
  
      request(uri).pipe(fs.createWriteStream(filename)).on('close', callback)
    })
}

let downloadedImages = 0
for(const url of images){
    let format = url.match(/(png|jpg|webo|jpeg|gif)/)[0]

    download(url, `${downloadedImages}.${format}`, function(){
        console.log(`${downloadedImages}.${format} saved [${downloadedImages}/${images.length}]`)
        downloadedImages = downloadedImages + 1
    })
}

由于某种原因，它只下载了links的第一个镜像，它记录了30.jpg saved [30/456]，但我在任何地方都看不到这个镜像

它下载的一张图片被破坏了：

​

Answer 1

所以我使用了安慰剂并让它起作用了

const axios = require("axios")
const fs = require("fs")

let links = [...]
function download(url, filePath){
  return axios(url, {method: 'GET', responseType: "stream"})
  .then( fileResponse => {
    fileResponse.data.pipe(fs.createWriteStream(filePath + '.' + extension))
    return fileResponse;
  })

}

let downloadedImages = 0
for(const url of links){
    let format = url.match(/(png|jpg|webo|jpeg|gif)/)[0]

    download(url, `${downloadedImages}.${format}`, function(){
        console.log(`${downloadedImages}.${format} saved [${downloadedImages}/${images.length}]`)
        downloadedImages = downloadedImages + 1
    })
}