angular-spring-websocket-sample

This sample is to demonstrate a chat application using the following cutting-edge technology stack :

• Angular as WebSocket client
• Spring WebFlux based Reactive WebSocket APIs
• In-memory Reactor Sink as a message queue(feat/reactor-sinks branch) or
• Spring Data MongoDB based @Tailable query result as an infinite stream

Prerequisites

• NodeJS 14
• OpenJDK 14
• Docker for Windows(or Mac if you are a MacOS user)

Build

Before running the application, you should build and run client and server side respectively.

Server

Run a MongoDB service firstly, simply you can run it from a Docker container. There is a docker-compose.yaml file is ready for you.

docker-compose up mongodb

Build the application.

./gradlew build

Run the target jar from the build folder to start up the application.

java -jar build/xxx.jar

Client

Install dependencies.

npm install

Start up the application.

npm run start

Now you can open a browser and navigate to http://localhost:4200 and have a try.

Reference

• How to use Processor in Reactor Java/
• How To Build a Chat App Using WebFlux, WebSockets & React