从mongoDb atlas数据采集中按id获取数据

Question

I'm trying to get data by using id but I always get 500 internal error. It would be great help if someone help to find what error I have done to get request. I have done post request successfully and stored data to MyDatabase collection of MongoDb Atlas

Here is my code:

app.get("/student/:id", function (req, res) {
  db.collection("MyDatabase").findOne(req.params.id, function (err, docs) {
    if (err) {
      handleError(res, err.message, "Failed to get student record.");
    } else {
      res.status(200).json(docs);
    }
  });
});

I have tried:

var ObjectId = require("mongodb").ObjectID;
  db.collection("MyDatabase").findOne(
    { _id: new ObjectId(id) }

but still not working

Answer 1

This works for me:

app.get("/student/:id", function (req, res) {
  const id = req.params.id;
  var o_id = new mongoDB.ObjectID(id);
  db.collection("MyDatabase").findOne({ _id: o_id }, function (err, docs) {
    if (err) {
      handleError(res, err.message, "Failed to get student data.");
    } else {
      res.status(200).json(docs);
    }
  });
});