multer创建文件夹，如果不存在

Posted 2021-04-04

我在multer的文档中看到，如果文件夹不存在，则multer不会创建文件夹。如果不存在该如何创建一个文件夹？

import multer from 'multer'
import crypto from 'crypto'
import { extname, resolve } from 'path'
import slug from 'slug'

export default {
  storage: multer.diskStorage({
    destination: resolve(__dirname, '..', '..', 'uploads', 'gallery'),
    filename: (req, file, cb) => {
      const { id, description } = req.body

      crypto.randomBytes(8, (err, res) => {
        if (err) return cb(err)

        return cb(null, id + '/' + res.toString('hex') + '/' + slug(description, { lower: true }) + extname(file.originalname))
        // return cb(null, res.toString('hex') + extname(file.originalname))
      })
    }
  })
}

答案

我已更改为：

import multer from 'multer'
import crypto from 'crypto'
import { extname } from 'path'
import slug from 'slug'
import fs from 'fs'

export default {
  storage: multer.diskStorage({
    destination: (req, file, cb) => {
      const { id } = req.body
      const path = `./uploads/gallery/${id}`
      fs.mkdirSync(path, { recursive: true })
      return cb(null, path)
    },
    filename: (req, file, cb) => {
      const { description } = req.body

      crypto.randomBytes(3, (err, res) => {
        if (err) return cb(err)

        return cb(null, slug(description, { lower: true }) + '_' + res.toString('hex') + extname(file.originalname))
      })
    }
  })
}