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提供以下统计信息，您只需选择request.file.originalname或request.file.filename即可获取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

访问上传的文件数据在Multer中有所不同，具体取决于您是上传单个还是多个文件。访问数据如下：

上传单个文件：

req.file

上传多个文件：

req.files

Answer 4

我在github上找到了答案，您可以在中访问它 res.req.file.filename 在此处查看更多信息，https://github.com/expressjs/multer/issues/302

Answer 5

使用

request.file.filename

fieldname以表格形式指定的字段名称 originalname用户计算机上文件的名称编码文件的编码类型
mimetype文件类型的Mime类型 size文件大小（以字节为单位）

Answer 6

    app.post('/multer', upload.single('file'), function(req, res) {
  // Need full filename created here
const file = req.file
if (!file) {
    const error = new Error('Please upload a file')
    error.httpStatusCode = 400
    return next(error)
  }
 res.send(file) #Here
});

您需要从此行恢复文件

 res.send(file)

使用file.filename 此输出示例

{
  "fieldname": "myFile",
  "originalname": "isc te esta esperando.jpg",
  "encoding": "7bit",
  "mimetype": "image/jpeg",
  "destination": "uploads",
  "filename": "myFile-1602293858948.eaf",
  "path": "uploads/myFile-1602293858948.eaf",
  "size": 297720
}

Node / Multer获取文件名

6 个答案: