How to Integrate Java Backend with a TypeScript Frontend for Real-Time Data Updates?

[markwilliams21]

Hi everyone,

I'm currently working on a project where I'm using Java for the backend and TypeScript for the frontend. I need to implement real-time data updates on the frontend whenever there's a change in the backend data. I've heard that WebSockets could be a good solution for this, but I'm not entirely sure how to set it up.

Here are a few specific questions I have:

• WebSocket Setup: How do I establish a WebSocket connection between my Java backend (using Spring Boot) and my TypeScript frontend (using Angular or React)?
• Data Transfer: What is the best way to structure and transfer data over WebSocket to ensure it’s efficient and reliable?
• Error Handling: How should I handle errors and reconnections on both the Java and TypeScript sides to ensure a stable connection?
• Security Considerations: What security measures should I take to protect the WebSocket communication from potential threats?
• Any code examples, libraries, or tutorials that you can recommend would be greatly appreciated. Thanks in advance for your help!

Best regards,
Mark Williams

[s3xysteak]

This is Discussions of Vuejs/core, so if you are searching for any information about Angular/React/even Java, maybe you can post in stackoverflow to ask for help.

To use WS in web, see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket

If you are using Vue, maybe try vueuse https://vueuse.org/core/useWebSocket/

import { useWebSocket } from '@vueuse/core'

const { status, data, send, open, close } = useWebSocket('ws://xxx/chatroom')

I can not provide too much info about java but maybe you can take a look on nitro(https://nitro.unjs.io/guide/websocket), which a nodejs backend framework. To make a WS serve:

// routes/chatroom.ts
export default defineWebSocketHandler({
  open(peer) {
    console.log("[ws] open", peer);
  },

  message(peer, message) {
    console.log("[ws] message", peer, message);
    if (message.text().includes("ping")) {
      peer.send("pong");
    }
  },

  close(peer, event) {
    console.log("[ws] close", peer, event);
  },

  error(peer, error) {
    console.log("[ws] error", peer, error);
  },
});