DeprecationWarning: current URL string parser is deprecated when Node.js connects to MongoDB database

Posted on by Admin

Learn to use Node.js to connect to MongoDB database today, this is my original code

var MongoClient = require('mongodb').MongoClient;
var url = "mongodb://localhost:27017/";

MongoClient.connect(url, function(err, db) {
    if (err) throw err;
    var dbo = db.db("one");
    var myobj = { name: "jack", age: "13" };
    dbo.collection("site").insertOne(myobj, function(err, res) {
        if (err) throw err;
        console.log("文档插入成功");
        db.close();
    });
});

Running error:
insert image description here
Literally, this parser is a bit outdated? We should use a new method to move { useNewUrlParser: true } to the parameters of MongoClient.connect.
After the change:

MongoClient.connect(url,{ useNewUrlParser: true }, function(err, db) {

});

This will run without error.

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