node.js - node.js的multer中的mp4文件上传问题

Question

我正在尝试通过在 node.js 中使用 multer 来上传 mp4 文件
(查看)VideoUploadPage.js

import React, { useState } from "react";
import Axios from "axios";


function VideoUploadPage() {

const onDrop = (files) => {
    let formData = new FormData();
    const config = {
      header: { "content-type": "multipart/form-data" },
    };
    formData.append("file", files[0]);
    console.log(files);

    Axios.post("/api/video/uploadfiles", formData, config).then((response) => {
      if (response.data.success) {
        console.log(response.data);
      } else {
        alert("비디오 업로드를 실패 했습니다.");
      }
    });
  };

}

(服务器)
视频.js

const express = require("express");
const router = express.Router();
const multer = require("multer");
const path = require("path");
const ffmpeg = require("fluent-ffmpeg");



let storage = multer.diskStorage({
  destination: (req, file, cb) => {
    cb(null, "uploads/");
  },
  filename: (req, file, cb) => {
    cb(null, `${Date.now()}_${file.originalname}`);
  },
  fileFilter: (req, file, cb) => {
    const ext = path.extname(file.originalname);
    if (ext !== ".mp4") {
      return cb(res.status(400).end("only mp4 is allowed"), false);
    }
    cb(null, true);
  },
});

const upload = multer({ storage: storage }).single("file");

router.post("/uploadfiles", (req, res) => {
  upload(req, res, (err) => {
    if (err) {
      return res.json({ success: false, err });
    }
    return res.json({
      success: true,
      url: res.req.file.path,
      fileName: res.req.file.filename,
    });
  });
});

在 video.js 目的地: (req, file, cb) => {
cb(null, "上传/")
} <----- 我可以使用 console.log(response.data) 检查要上传的文件，但是“uploads”文件夹中没有 mp4 文件。
当我将“uploads/”更改为我的本地目录路径时，mp4 文件位于 uploads 文件夹中......
例如:“C://~~~/uploads”
任何想法？

Answer 1

使用 path.resolve('./uploads') 将一系列路径段解析为绝对路径。

let storage = multer.diskStorage({
destination: (req, file, cb) => {
cb(null, path.resolve('./uploads'); // path of the upload folder
},
filename: (req, file, cb) => {
cb(null, `${Date.now()}_${file.originalname}`);
},
fileFilter: (req, file, cb) => {
const ext = path.extname(file.originalname);
if (ext !== ".mp4") {
  return cb(res.status(400).end("only mp4 is allowed"), false);
}
cb(null, true);
},
});