fs-extra 文件管理

$npm install fs-extra --save

fs.mkdir(path, [mode], [callback(err)])
path            将创建的目录路径
mode          目录权限（读写权限），默认0777
callback      回调，传递异常参数err

await fs.mkdir(path.join(__dirname, "/images", dir));

fs.rmdir(path,callback)

fs.readdir(path,callback(err,files))

fs.copy(‘G:/works/node爬虫/images‘, ‘G:/works/node爬虫/test‘, function(err) {
    if (err) return console.error(err)
    console.log("success!")
});

fs.move(‘G:/works/node爬虫/images‘, ‘G:/works/node爬虫/testss‘, function(err) {
    if (err) return console.error(err)
    console.log("success!")
});

fs.remove(‘G:/works/node爬虫/images2‘, function(err) {
    if (err) return console.error(err)
    console.log("success!")
})

// 目录
var dir = ‘G:/works/node爬虫/my‘
fs.ensureDir(dir, function(err) {
  console.log(err) // => null 
  //dir has now been created, including the directory it is to be placed in 
});

// 文件
var file = ‘G:/works/node爬虫/my/file.txt‘
fs.ensureFile(file, function(err) {
  console.log(err) // => null 
  //file has now been created, including the directory it is to be placed in 
});

var file = ‘G:/works/node爬虫/my/file.txt‘
var str = "hello Alan!"
fs.outputFile(file, str, function(err) {
    console.log(err) // => null 

    fs.readFile(file, ‘utf8‘, function(err, data) {
        console.log(data) // => hello! 
    })
})

const request = require(‘superagent‘)
const cheerio = require(‘cheerio‘)
const fs = require(‘fs-extra‘)
const path = require(‘path‘)

function download() {
  const url2 = "https://imgsa.baidu.com/forum/w%3D580/sign=cbeba091a5014c08193b28ad3a7a025b/1ba6b90e7bec54e7141e3726b5389b504ec26ab4.jpg"
  const filename = url2.split(‘/‘).pop()
  const req = request.get(url2)
  req.pipe(fs.createWriteStream(path.join(__dirname, ‘images‘, filename)))
}
download()