POSTMAN + MULTER：无法上传，崩溃

Question

当我在 POSTMAN 中发送 POST 时，文件不会上传并且应用程序崩溃。

节点：内部/错误：490 ErrorCaptureStackTrace（错误）； ^

TypeError [ERR_INVALID_ARG_TYPE]：“路径”参数必须是字符串类型或 Buffer 或 URL 的实例。收到空 在 TempWriteStream.WriteStream (node:internal/fs/streams:326:5) 在新的 TempWriteStream (C:\Users\NOOB\Desktop\mern-project ode_modules s-temp\lib\write-stream.js:6:15) 在 Object.createWriteStream (C:\Users\NOOB\Desktop\mern-project ode_modules s-temp\lib emp.js:121:10) 在 Busboy。 (C:\Users\NOOB\Desktop\mern-project ode_modules\multer\lib ead-body.js:70:27) 在 Busboy.emit（节点：事件：513:28） 在 Busboy.emit (C:\Users\NOOB\Desktop\mern-project ode_modules usboy\lib\main.js:37:33) 在 PartStream。 (C:\Users\NOOB\Desktop\mern-project ode_modules usboy\lib ypes\multipart.js:214:13) 在 PartStream.emit（节点：事件：513:28） 在 HeaderParser。 (C:\Users\NOOB\Desktop\mern-project ode_modules\dicer\lib\Dicer.js:50:16) 在 HeaderParser.emit（节点：事件：513:28）{ 代码：'ERR_INVALID_ARG_TYPE' }

Node.js v18.15.0 [nodemon] app crashed - waiting for file changes before starting...

PACKAGE.JSON

  "name": "mern-project",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "nodemon server"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "bcrypt": "^5.1.0",
    "body-parser": "^1.20.2",
    "cookie-parser": "^1.4.6",
    "cors": "^2.8.5",
    "dotenv": "^16.0.3",
    "express": "^4.18.2",
    "express-fileupload": "^1.4.0",
    "jsonwebtoken": "^9.0.0",
    "mongoose": "^6.10.4",
    "multer": "^2.0.0-rc.2",
    "nodemon": "^2.0.22",
    "react-scripts": "5.0.1",
    "validator": "^13.9.0"
  },
  "devDependencies": {
    "@svgr/webpack": "^6.5.1"
  },
  "overrides": {
    "@svgr/webpack": "^6.5.1"
  }
}

post.routes.js

const router = require("express").Router();
const postController = require("../controllers/post.controller");
const multer = require("multer");
const upload = multer();

router.get("/", postController.readPost);
router.post("/", upload.single("file"), postController.createPost);
router.put("/:id", postController.updatePost);
router.delete("/:id", postController.deletePost);
router.patch("/like-post/:id", postController.likePost);
router.patch("/unlike-post/:id", postController.unlikePost);

// comments
router.patch("/comment-post/:id", postController.commentPost);
router.patch("/edit-comment-post/:id", postController.editCommentPost);
router.patch("/delete-comment-post/:id", postController.deleteCommentPost);

module.exports = router;

user.routes.js

const router = require("express").Router();
const authController = require("../controllers/auth.controller");
const userController = require("../controllers/user.controller");
const uploadController = require("../controllers/upload.controller");
const multer = require("multer");
const upload = multer();

// auth
router.post("/register", authController.signUp);
router.post("/login", authController.signIn);
router.get("/logout", authController.logout);

// user DB
router.get("/", userController.getAllUsers);
router.get("/:id", userController.userInfo);
router.put("/:id", userController.updateUser);
router.delete("/:id", userController.deleteUser);
router.patch("/follow/:id", userController.follow);
router.patch("/unfollow/:id", userController.unfollow);

// upload
router.post("/upload", upload.single("file"), uploadController.uploadProfil);

module.exports = router;

upload.controller.js

const UserModel = require("../models/user.model");
const fs = require("fs");
const { promisify } = require("util");
const pipeline = promisify(require("stream").pipeline);
const { uploadErrors } = require("../utils/errors.utils");

module.exports.uploadProfil = async (req, res) => {
  try {
    if (
      req.file.detectedMimeType != "image/jpg" &&
      req.file.detectedMimeType != "image/png" &&
      req.file.detectedMimeType != "image/jpeg"
    )
      throw Error("invalid file");

    if (req.file.size > 500000) throw Error("max size");
  } catch (err) {
    const errors = uploadErrors(err);
    return res.status(201).json({ errors });
  }
  const fileName = req.body.name + ".jpg";

  await pipeline(
    req.file.stream,
    fs.createWriteStream(
      `${__dirname}/../client/public/uploads/profil/${fileName}`
    )
  );

  try {
    await UserModel.findByIdAndUpdate(
      req.body.userId,
      { $set: { picture: "./uploads/profil/" + fileName } },
      { new: true, upsert: true, setDefaultsOnInsert: true },
      (err, docs) => {
        if (!err) return res.send(docs);
        else return res.status(500).send({ message: err });
      }
    );
  } catch (err) {
    return res.status(500).send({ message: err });
  }
};

我尝试了多个版本的 multer 和 node.js，我在“表单数据”字段中尝试了几种组合。我总是得到相同的结果。