无法读取未定义的属性（读取＆＃x27; path＆＃x27;） - multer错误

Question

我正在通过Multer软件包将图像上传到文件夹中。在测试Postman中的路线时，我会遇到错误。

location_model.js

const util = require("util");

const locationSchema = mongoose.Schema(
  {
    _id: mongoose.Schema.Types.ObjectId,
    name: String,
    latitude: { type: Number, required: true },
    longitude: { type: Number, required: true },
    heightmapImage: { type: String, required: true },
  },
  { bufferCommands: false } //no biffer time limit
);

module.exports = mongoose.model("Location", locationSchema);

这是我位置路由器的代码，同时发布了图像的新位置

router.post("/", upload.single("heightmapImage"), (req, res, next) => {
  //Model
  console.log(req.file);
  console.log(req.file.path);
  const location = new Location({
    _id: new mongoose.Types.ObjectId(),
    name: req.body.name,
    latitude: req.body.latitude,
    longitude: req.body.longitude,
    heightmapImage: req.file.path
      .replace(/\\/g, "/")
      .substring("public".length),
  });
  location
    .save()
    .then((result) => {
      //save method provided by mongoose, will save in the databas
      console.log(result);
      res.status(201).json({
        //message: "Working POST",
        message: "Created Location successfully",
        createdLocation: {
          name: result.name,
          latitude: result.latitude,
          longitude: result.longitude,
          request: {
            type: "GET",
            url: "http://localhost:3000/location/" + result._id,
          },
        },
      });
    })
    .catch((err) => {
      console.log(err);
      res.status(500).json({ error: err });
    });
});

，这是在Postman中进行发布时的错误 -

{
    "error": {
        "message": "Cannot read properties of undefined (reading 'path')"
    }
}

Answer 1

当我将其更改为 req.files 时，它起作用了。