How do you read and write data to Firebase in Spring Boot?

Table of Contents

• Introduction
• Setting Up Firebase in Spring Boot
• Reading Data from Firebase
  • Example: Reading Data
• Writing Data to Firebase
  • Example: Writing Data
• Practical Example: Read and Write Operations
  • Save User Data
  • Retrieve User Email
• Conclusion

Introduction

Firebase Realtime Database is a cloud-hosted NoSQL database that allows you to store and sync data in real time. In a Spring Boot application, reading and writing data to Firebase involves using the Firebase Admin SDK, which provides APIs for seamless data interaction. This guide explains how to configure Firebase in your Spring Boot application and perform CRUD (Create, Read, Update, Delete) operations effectively.

Setting Up Firebase in Spring Boot

Before you can interact with Firebase Realtime Database, ensure the following setup steps are complete:

1. Add Firebase Admin SDK Dependency
   Add the Firebase Admin SDK to your pom.xml or build.gradle file.

2. Service Account Key
   Download the service account key JSON file from the Firebase Console and place it in your project's resources folder.

3. Initialize Firebase
   Create a configuration class to initialize Firebase:

Reading Data from Firebase

To read data from Firebase, you use the DatabaseReference class to fetch data from a specific path in the database.

Example: Reading Data

Writing Data to Firebase

Writing data involves using the setValueAsync or updateChildrenAsync methods to store or update data at a specific path.

Example: Writing Data

Practical Example: Read and Write Operations

Save User Data

Retrieve User Email

Conclusion

Reading and writing data to Firebase Realtime Database in Spring Boot is straightforward with the Firebase Admin SDK. By leveraging the DatabaseReference class, you can perform seamless CRUD operations. Following the examples in this guide, you can easily integrate Firebase into your Spring Boot application, ensuring efficient and real-time data management.