Node/Multer获取文件名

Question

我使用以下内容通过Multer将文件上传到目录.它工作得很好,但我需要在上传后执行一些操作,这些操作需要我刚刚发布到"upload"目录的文件名.如何获取刚刚发布的文件的名称？

// Multer storage options
var storage = multer.diskStorage({
  destination: function(req, file, cb) {
    cb(null, 'upload/');
  },
  filename: function(req, file, cb) {
    cb(null, file.originalname + '-' + Date.now() + '.pdf');
  }
});

var upload = multer({ storage: storage });

app.post('/multer', upload.single('file'), function(req, res) {
  // Need full filename created here
});

Answer 1

request.file给出以下统计数据,您只需从中选择request.file.originalname或request.file.filename获取nodejs app创建的新文件名.

{ 
  fieldname: 'songUpload',
  originalname: '04. Stairway To Heaven - Led Zeppelin.mp3',
  encoding: '7bit',
  mimetype: 'audio/mp3',
  destination: './uploads',
  filename: 'songUpload-1476677312011',
  path: 'uploads/songUpload-1476677312011',
  size: 14058414 
}

例如,在nodejs中用ecma-6表达mvc app,

var Express = require('express');
var app = Express();

var multipartUpload = Multer({storage: Multer.diskStorage({
    destination: function (req, file, callback) { callback(null, './uploads');},
    filename: function (req, file, callback) { callback(null, file.fieldname + '-' + Date.now());}})
}).single('songUpload');

app.post('/artists', multipartUpload, (req, resp) => {
     val originalFileName = req.file.originalname
     console.log(originalFileName)
}

Answer 2

var express=require("express");
var app=express();
var multer=require("multer");
var upload=multer({dest:"uploads/"});
app.post("/multer", upload.single("file"), function(req,res){
    console.log(req.file.filename);
});

Answer 3

在Multer中，访问上传文件的数据有所不同，具体取决于您要上传单个文件还是多个文件。像这样访问数据：

上传单个文件：

req.file

上载多个文件：

req.files