How do you send SMS messages with Twilio API in Spring Boot?

Table of Contents

• Introduction
• Steps to Send SMS with Twilio in Spring Boot
  • 1. Add Twilio Dependency
  • 2. Configure Twilio Credentials
  • 3. Create a Twilio Service Class
  • 4. Create a Controller to Trigger SMS Sending
  • 5. Test the SMS API
• Example Output
• Conclusion

Introduction

Twilio provides a powerful platform for building communication services, including sending SMS messages, making voice calls, and more. Integrating Twilio with a Spring Boot application allows you to easily send SMS messages programmatically. In this guide, we’ll walk you through the steps to send SMS messages using the Twilio API in a Spring Boot project.

Steps to Send SMS with Twilio in Spring Boot

1. Add Twilio Dependency

The first step is to add the necessary Twilio dependency to your pom.xml (for Maven) or build.gradle (for Gradle) file.

For Maven:

For Gradle:

This dependency includes everything you need to interact with the Twilio API.

2. Configure Twilio Credentials

Twilio requires an Account SID and an Auth Token for authentication. These are provided when you create an account on Twilio.

Store these credentials in your application.properties or application.yml for security:

application.properties:

3. Create a Twilio Service Class

Now, create a service class in Spring Boot that uses Twilio’s API to send SMS messages. You will use the Message.creator() method from the Twilio SDK to send SMS.

TwilioService.java:

4. Create a Controller to Trigger SMS Sending

Next, create a REST controller to expose an API endpoint that will trigger the SMS sending. This allows you to send SMS messages via an HTTP request.

SmsController.java:

5. Test the SMS API

With the service and controller in place, you can now test sending an SMS. Run the Spring Boot application and call the endpoint to send an SMS.

For example, using Postman or curl:

POST Request:

You should receive an SMS message from your Twilio number.

Example Output

When the SMS is sent successfully, you’ll receive a Message SID as a response. This SID can be used to track the message or debug any issues with the request.

Example Response:

Conclusion

Sending SMS messages with the Twilio API in Spring Boot is straightforward and requires only a few steps to set up. By adding the Twilio dependency, configuring your credentials, creating a service to send SMS, and exposing a REST API endpoint, you can easily integrate SMS functionality into your Spring Boot application. With Twilio’s robust API and Spring Boot’s simplicity, you can quickly implement messaging features for your projects.