Question

我正在尝试使用multer gridFS制作文件上传API，我使用了文档，但缺少以下内容：

这是我的代码：

const config = require("config");
const express = require("express");
const router = express.Router();
const dbURI = config.get("mongoURI");
const multer = require("multer");
const crypto = require("crypto");
const path = require("path");
const GridFsStorage = require("multer-gridfs-storage");


var 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 fileInfo = {
          filename: filename,
          bucketName: "uploads"
        };
        resolve(fileInfo);
      });
    });
  }
});
const upload = multer({ storage });

router.post("/upload", upload.single("file"), (req, res) => {
  res.json({ msg: "file uploaded successfully" });
});

我收到一个错误TypeError：Router.use（）需要一个中间件函数，但是得到了一个对象，该对象基本上告诉我upload.single不是函数，我的错误是什么？

Answer 1

我发现了错误，我缺少module.exports = router;

中间件是对象而不是函数

1 个答案: