2

出于某种原因，我不断收到“TypeError：GridFsStorage 不是构造函数”错误。我不知道为什么它会给我这个错误，因为我只是在关注官方文档。

存储和上传

conn.once('open', ()=> {
    gfs = Grid(conn.db, mongoose.mongo)
    gfs.collection('uploads')
})

const storage = new GridFsStorage({
    url: DBURI,
    file: (req, file)=> {
        return new Promise((resolve,reject)=> {
            crypto.randomBytes(16, (err, buf)=> {
                if(err) {
                    return reject(err)
                }
                const filename = buf.toString('hex') + path.extname(file.originalname);
                const fileInfor = {
                    filename: filename,
                    bucketName: 'uploads'
                }
                resolve(fileInfo)
            })
        })
    }
})
const upload = multer({storage})

要求

const GridFsStorage = require('multer-gridfs-storage')

漏洞

C:\Users\gabri\Desktop\GridFS\server.js:21
const storage = new GridFsStorage({
                ^

TypeError: GridFsStorage is not a constructor
    at Object.<anonymous> (C:\Users\gabri\Desktop\GridFS\server.js:21:17)      
    at Module._compile (node:internal/modules/cjs/loader:1092:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1121:10)
    at Module.load (node:internal/modules/cjs/loader:972:32)
    at Function.Module._load (node:internal/modules/cjs/loader:813:14)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
    at node:internal/main/run_main_module:17:47
4

2 回答 2

16

NPM 上的文档显示了这一点：

const {GridFsStorage} = require('multer-gridfs-storage');

这与以下内容相同：

const GridFsStorage = require('multer-gridfs-storage').GridFsStorage;

而您使用的是完全不同的：

const GridFsStorage = require('multer-gridfs-storage');
于 2021-06-19T14:54:22.460 回答
1

用这个：

import {GridFsStorage} from 'multer-gridfs-storage'

于 2021-07-12T08:49:25.087 回答