Connect to MongoDB in Golang

We show you the code to connect to MongoDB in Golang. But before running this example, you need to have a database and a collection to connect. The following exercise was executed with the help of Visual Studio Code and MongoDB Compass

» More Golang Examples

go mod init yourdomain.com/connectmmongodb

Having MongoDB correctly installed, we start the server with the port set by default with the following command in the terminal:

mongod

After we generate a local database in Compass:

We will also create a database and as required, a new collection.

Finally in our collection we insert a new document with test data.

/** 
* geekole.com
*/
[{
  "name":"Sophia Whatson",
  "phone":"2255889977",
  "state":"California"
},
{
  "name":"James Hopkins",
  "phone":"8899552277",
  "state":"Texas"
}]

Now the code:

package main

import (
	"context"
	"log"

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

//geekole.com

// const AccessDataMongoDB = "mongodb://min01:min01@" + ipServer + ":27017/?authSource=cfdis&readPreference=primary&appname=MongoDB%20Compass&directConnection=true&ssl=false"
const AccessDataMongoDB = "mongodb://docker:mongopw@12.12.12.12:49153"

var clientMongoDB *mongo.Client

func InitMDB() {
	clientOptions := options.Client().ApplyURI(AccessDataMongoDB)

	var err error
	clientMongoDB, err = mongo.Connect(context.TODO(), clientOptions)
	if err != nil {
		log.Fatal(err)
	}

	//Check the connections
	err = clientMongoDB.Ping(context.TODO(), nil)
	if err != nil {
		log.Fatal(err)
	}
}

To get the libraries execute the following command inside the terminal of your project in Visual Studio Code:

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

If you got an error with git, you can try running the following code:

sudo apt-get install git

Having as a final result the following:

We hope this example of how to Connect to MongoDB in Golang will help you.