图片上传错误：TypeError [ERR_INVALID_ARG_TYPE]：“路径”参数必须是字符串类型。接收类型未定义

Posted 2023-02-22

【中文标题】图片上传错误：TypeError [ERR_INVALID_ARG_TYPE]：“路径”参数必须是字符串类型。接收类型未定义

【英文标题】：Image Upload Error: TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received type undefined

【发布时间】：2021-01-22 19:36:01

【问题描述】：

我正在尝试使用邮递员将图像上传到 Firebase。随着firebase serve 的运行，我向我的路由发送了一个发布请求以及授权标头和图像文件，但在控制台中收到以下错误：

TypeError [ERR_INVALID_ARG_TYPE]：“路径”参数必须是字符串类型。接收类型未定义

exports.uploadImage = (req, res) => 
  const BusBoy = require('busboy')
  const path = require('path')
  const os = require('os')
  const fs = require('fs')

  const busboy = new BusBoy(
    headers: req.headers
  )

  let imageFileName
  let imageToBeUploaded = 

  busboy.on('file', (fieldname, file, filename, encoding, mimetype) => 

    console.log(fieldname, filename, encoding, mimetype)

    if (mimetype !== 'image/jpeg' && mimetype !== 'image/png') 
      return res.status(400).json(
        error: '❌ Wrong file type submitted'
      )
    

    const imageExtension = filename.split('.')[filename.split('.').length - 1]

    imageFileName = `$Math.round(
      Math.random() * 1000000000000
    ).$imageExtension`

    const filepath = path.join(os.tmpdir(), imageFileName)

    imageToBeUploaded = 
      filepath,
      mimetype
    

    file.pipe(fs.createWriteStream(filepath))

  )


  busboy.on('finish', () => 
    admin
      .storage()
      .bucket(config.storageBucket)
      .upload(imageToBeUploaded.filpath, 
        resumable: false,
        metadata: 
          metadata: 
            contentType: imageToBeUploaded.mimetype,
          ,
        ,
      )
      .then(() => 
        const imageUrl = `https://firebasestorage.googleapis.com/v0/b/$config.storageBucket/o/$imageFileName?alt=media`
        return db.doc(`/users/$req.user.handle`).update(
          imageUrl
        )
      )
      .then(() => 
        return res.json(
          message: '✅ Image uploaded successfully'
        )
      )
      .catch((err) => 
        console.error(err)
        return res.status(500).json(
          error: err.code
        )
      )
  )
  busboy.end(req.rawBody)

完整的错误信息：

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received type undefined
     at validateString (internal/validators.js:112:11)
     at Object.basename (path.js:1157:5)
     at Bucket.upload (/Users/apple/Code/litter/litter-functions/functions/node_modules/@google-cloud/storage/build/src/bucket.js:2493:38)
     at /Users/apple/Code/litter/litter-functions/functions/node_modules/@google-cloud/promisify/build/src/index.js:69:28
     at new Promise (<anonymous>)
     at Bucket.wrapper (/Users/apple/Code/litter/litter-functions/functions/node_modules/@google-cloud/promisify/build/src/index.js:54:16)
     at Busboy.<anonymous> (/Users/apple/Code/litter/litter-functions/functions/handlers/users.js:133:8)
     at Busboy.emit (events.js:210:5)
     at Busboy.emit (/Users/apple/Code/litter/litter-functions/functions/node_modules/busboy/lib/main.js:37:33)
     at /Users/apple/Code/litter/litter-functions/functions/node_modules/busboy/lib/types/multipart.js:52:13     code: 'ERR_INVALID_ARG_TYPE'  

【问题讨论】：

请编辑问题以显示完整的错误，并确保指出是哪一行代码导致了它。您在需要字符串的地方传递 undefined。

【参考方案1】：

问题是您在upload() 的参数中输入了imageToBeUploaded.filpath，但您的本意是输入imageToBeUploaded.filepath。缺少一个“e”，这使得整个表达式未定义。

【讨论】：

谢谢！修复了它:)