MongoDB: Client Library/Driver Connection Setup

Here is how to set up a connection from your preferred programming language. We have discussed the setup for NodeJS, Golang, Java, Python here.

Here are the packages we have used-

Programming Language	Documentation	Package Source
NodeJS	MongoDB Node.JS Driver Documentation MongoDB Node.JS Driver NPM	GitHub
Goalng	Golang Mongo Driver Documentation	GitHub
Python	PyMongo Documentation	GitHub
Java	Java Mongo Driver Documentation	GitHub
C#	C# Mongo Driver Documentation	GitHub
PHP	PHP Mongo Driver Documentation Pecl Mongo Package Installation PHP Package in Packagist	Driver code in GitHub Library code in GitHub

MongoDB connection setup in different programming languages-

NodeJS MongoDB Connection Setup

Golang MongoDB Connection Setup
Python Connection Setup for MongoDB
PHP Connection Setup for MongoDB

Java MongoDB Connection Setup

NodeJS MongoDB Connection Setup

Initialize a NodeJS project, and provide the required information asked in the terminal-

npm init

This will initialize a Node project and create “package.json” file.

To connect to MongoDB we need a package named “mongodb“. Let’s install the package, by using the following command-

npm install --save mongodb

Here is our package.json file, your file will look similar-

{
  "name": "mongoexample",
  "version": "1.0.0",
  "description": "Mongodb usage examples",
  "main": "index.js",
  "type": "module",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "webhkp",
  "license": "ISC",
  "dependencies": {
    "mongodb": "^6.3.0"
  }
}

To test the installation, let’s create a JavaScript file named “hello-world.js“, and the following code to the file-

// hello-world.js

import { MongoClient } from "mongodb";

// Define MongoDB connection URI
const uri = "mongodb://bigboxuser:bigboxpass@127.0.0.1:27017";

// Create a client
const mongo = new MongoClient(uri);

await mongo.connect();

const database = mongo.db("bigboxcode");
const testCollection = database.collection("mytest");

// Insert data
const insertResult = await testCollection.insertOne({
  siteName: "BigBoxCode",
  siteURL: "https://bigboxcode.com",
  info: {
    status: "active",
    whois: "whois.bigboxcode.com",
  },
});

console.log("Insert Result: ", insertResult);

// Read data
const findResult = await testCollection.findOne({
  _id: insertResult.insertedId,
});

console.log("Find Result: ", findResult);

// Close connection
await mongo.close();

process.exit(0);

Run the code using the following command-

node hello-word.js

We will get the following output-

Insert Result:  
{
  acknowledged: true,
  insertedId: new ObjectId('65a0028b52ca36d21b4279c7')
}

Find Result:  
{
  _id: new ObjectId('65a0028b52ca36d21b4279c7'),
  siteName: 'BigBoxCode',
  siteURL: 'https://bigboxcode.com',
  info: { status: 'active', whois: 'whois.bigboxcode.com' }
}

Golang MongoDB Connection Setup

Initialize a go module for your project, using the command below. Our package name is “github.com/webhkp/bigboxcode” here, but your package name will be different, so use your package name-

go mod init github.com/webhkp/bigboxcode

Install “go.mongodb.org/mongo-driver/mongo” for using MongoDB driver-

go get go.mongodb.org/mongo-driver/mongo

Install “go.mongodb.org/mongo-driver/bson” package for handling “BSON” data type in the code-

go get go.mongodb.org/mongo-driver/bson

Create a go file named “helloworld.go“, and add the following code-

// helloworld.go

package main

import (
	"context"
	"fmt"
	"os"
	"time"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
)

const uri = "mongodb://bigboxuser:bigboxpass@localhost:27017/?maxPoolSize=20&w=majority"

func main() {
	// Initiate mongo client
	mongoClient, err := mongo.Connect(context.TODO(), options.Client().ApplyURI(uri))
	if err != nil {
		fmt.Println("MongoDB connection error: ", err)
		os.Exit(1)
	}

	// Initiate collection instance
	ctx, _ := context.WithTimeout(context.Background(), 30*time.Second)
	testCollection := mongoClient.Database("bigboxcode").Collection("mytest")

	// Insert data
	insertData := bson.D{
		{"siteName", "BigBoxCode"},
		{"siteURL", "https://bigboxcode.com"},
		{"info", bson.D{
			{"status", "active"},
			{"whois", "whois.bigboxcode.com"},
		}},
	}

	insertResult, err := testCollection.InsertOne(ctx, insertData)

	if err != nil {
		fmt.Println("Data insert error: ", err)
		os.Exit(1)
	}

	fmt.Println("Insert Result: ", insertResult)

	// Retrieve last inserted data
	var findResult bson.D

	if err := testCollection.FindOne(ctx, bson.D{{"_id", insertResult.InsertedID}}).Decode(&findResult); err != nil {
		fmt.Println("Data insert error: ", err)
		os.Exit(1)
	}

	fmt.Println("Inserted data: ", findResult)
}

Run it using the following command-

go run helloworld.go

You should get output like below-

Insert Result:  &{ObjectID("65a12726cab651d53b29fe23")}
Inserted data:  [{_id ObjectID("65a12726cab651d53b29fe23")} {siteName BigBoxCode} {siteURL https://bigboxcode.com} {info [{status active} {whois whois.bigboxcode.com}]}]

Python Connection Setup for MongoDB

We are using the package “pymongo” for connecting to MongoDB. Use the following command to install the Python “pymongo” package-

pip install pymongo

Create a Python file and the following code-

# helloworld.py

# Import required packages
from pymongo import MongoClient

# Create MongoDB client
mongoClient = MongoClient("mongodb://bigboxuser:bigboxpass@127.0.0.1:27017/")
# Select database and collection
mongoDatabase = mongoClient.bigboxcode
testCollection = mongoDatabase.mytest

# Insert data to database
insertResult = testCollection.insert_one({
  "siteName": "BigBoxCode",
  "siteURL": "https://bigboxcode.com",
  "info": {
    "status": "active",
    "whois": "whois.bigboxcode.com",
  },
})

print("Insert Result: ", insertResult)

# Read the inserted data
findResult = testCollection.find_one({"_id": insertResult.inserted_id})

print("Find Result: ", findResult)

Output:

If we run the above code, we will get following code-

Insert Result:  InsertOneResult(ObjectId('65a267a73eafc3e3e4165242'), acknowledged=True)
Find Result:  {'_id': ObjectId('65a267a73eafc3e3e4165242'), 'siteName': 'BigBoxCode', 'siteURL': 'https://bigboxcode.com', 'info': {'status': 'active', 'whois': 'whois.bigboxcode.com'}}

PHP Connection Setup for MongoDB

We are using the Ppackage “mongodb/mongodb” for connecting to MongoDB.

Use the following composer command to initiate a new project. Project information asked in the terminal-

composer init

This will generate a “composer.json” file. We have the following in “composer.json”, you may have some different information based on the information you provided-

{
    "name": "webhkp/mongophp",
    "type": "project",
    "autoload": {
        "psr-4": {
            "Webhkp\\Mongophp\\": ""
        }
    },
    "authors": [
        {
            "name": "webhkp"
        }
    ],
    "require": {}
}

Before installing the composer package we need to install the “mongdb” library-

pecl install mongodb

Add the composer package by using the following command-

composer require mongodb/mongodb

Use the code below to connect to MongoDB and perform operations-

<?php
require_once __DIR__ . '/vendor/autoload.php';

$uri = 'mongodb://bigboxuser:bigboxpass@127.0.0.1:27017';

$client = new MongoDB\Client($uri);

$testCollection = $client->selectDatabase('bigboxcode')->selectCollection('mytest');

$insertResult = $testCollection->insertOne([
    "siteName" => "BigBoxCode",
    "siteURL" => "https://bigboxcode.com",
    "info" => [
        "status" => "active",
        "whois" => "whois.bigboxcode.com",
    ],
]);

Java MongoDB Connection Setup

We are using the package “mongodb-driver-sync” for connecting to MongoDB. Use the following to add the package from Maven-

<dependencies>
    <dependency>
        <groupId>org.mongodb</groupId>
        <artifactId>mongodb-driver-sync</artifactId>
        <version>4.11.1</version>
    </dependency>
</dependencies>

If you are using Gradle, then use the following setting-

dependencies {
  implementation 'org.mongodb:mongodb-driver-sync:4.11.1'
}

Use the code below, to check the MongoDB connection-

import com.mongodb.client.result.InsertOneResult;
import org.bson.Document;
import com.mongodb.client.MongoClient;
import com.mongodb.client.MongoClients;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;

import java.util.HashMap;
import java.util.Map;

import static com.mongodb.client.model.Filters.eq;

public class Main {
    public static void main(String[] args) {

        // Replace the placeholder with your MongoDB deployment's connection string
        String uri = "mongodb://bigboxuser:bigboxpass@localhost:27017/";

        try (MongoClient mongoClient = MongoClients.create(uri)) {
            MongoDatabase database = mongoClient.getDatabase("bigboxcode");
            MongoCollection<Document> testCollection = database.getCollection("mytest");

            // Insert a document
            Map<String, String> documentData = new HashMap<>() {{
                put("siteName", "BigBoxCode");
                put("siteURL", "https://bigboxcode.com");
                put("status", "active");
                put("whois", "whois.bigboxcode.com");
            }};
            Document insertDocument = new Document(documentData);
            InsertOneResult insertResult = testCollection.insertOne(insertDocument);

            System.out.println("Insert Result: " + insertResult);

            // Find the result
            Document findResult = testCollection.find(eq("_id", insertResult.getInsertedId())).first();
            if (findResult != null) {
                System.out.println("Find Result: " + findResult.toJson());
            } else {
                System.out.println("Not found.");
            }
        }
    }
}