Spring Boot + FCM - simple push notifications server-side application

This is simple Spring Boot application with Firebase Cloud Messaging integration.

Technologies

• Spring Boot
• Firebase Cloud Messaging

Configuration

• Provide your own Firebase Admin SDK, JSON-formatted file (service account credentials) and place it inside the project (for example src/resources/google)
• Change the path and defaults in application.properties

Endpoints

• GET /notification – Trigger sample notification with default values sending

curl -H "Content-Type: application/json" -X GET http://localhost:8080/notification

• POST /notification/topic – Send a message to a specific topic

curl -d '{"title":"Hello", "message":"The message...", "topic":"contactTopic"}' -H "Content-Type: application/json" -X POST http://localhost:8080/notification/topic

• POST /notification/token – Send a message to a specific device (with token)

curl -d '{"title":"Hey you!", "message":"Watch out!", "token":"cct00ebz8eg:APA91bFcTkFE_0Qafj6nWv5yHxqCLTyxAaqi4QzwsFNLP5M9G78X8Z5UMZTW004q1PUux63Ut-1WMGVToMNTdB3ZfO8lCZlc4lGpxm7LBdWfkhaUxdbpQ5xIO5cAb-w9H2dBLNHT7i-U", "topic": ""}' -H "Content-Type: application/json" -X POST http://localhost:8080/notification/token

• POST /notification/data – Send a message to a specific topic with additional payload data.

curl -d '{"title":"Hello", "message":"Data message", "topic":"contactTopic"}' -H "Content-Type: application/json" -X POST http://localhost:8080/notification/data

• Success response

{ "status": 200, "message": "Notification has been sent." }

More information

• Blog post: Send push notifications from Spring Boot server-side application using FCM

• Client-side Ionic application: ionic-fcm-push-notifications