React와 RabbitMQ를 사용하여 안정적인 메시징 앱을 구축하는 방법

npx create-react-app message-app

cd message-app
npm install amqplib react-router-dom

import React, { useState } from 'react';
import { useHistory } from 'react-router-dom';

export default function MessageSender() {
  const [message, setMessage] = useState('');
  const history = useHistory();

  const sendMessage = async () => {
    try {
      // 连接到RabbitMQ服务器
      const conn = await require('amqplib').connect('amqp://localhost');
      const ch = await conn.createChannel();

      // 定义消息发送到的队列名
      const queue = 'message_queue';

      // 发送消息
      await ch.assertQueue(queue, { durable: false });
      await ch.sendToQueue(queue, Buffer.from(message));

      // 关闭连接
      await ch.close();
      await conn.close();

      // 跳转到消息列表页
      history.push('/messages');
    } catch (error) {
      console.error('发送消息失败:', error);
    }
  };

  return (
    <div>
      <input
        type="text"
        value={message}
        onChange={(e) => setMessage(e.target.value)}
      />
      <button onClick={sendMessage}>发送消息</button>
    </div>
  );
}

import React, { useState, useEffect } from 'react';

export default function MessageList() {
  const [messages, setMessages] = useState([]);

  useEffect(() => {
    const fetchMessages = async () => {
      try {
        // 连接到RabbitMQ服务器
        const conn = await require('amqplib').connect('amqp://localhost');
        const ch = await conn.createChannel();

        // 定义消息接收的队列名
        const queue = 'message_queue';

        // 从队列中获取消息
        await ch.assertQueue(queue, { durable: false });
        await ch.consume(queue, (msg) => {
          setMessages((prevMessages) => [...prevMessages, msg.content.toString()]);
        });

        // 关闭连接
        await ch.close();
        await conn.close();
      } catch (error) {
        console.error('接收消息失败:', error);
      }
    };

    fetchMessages();
  }, []);

  return (
    <div>
      <h2>消息列表</h2>
      <ul>
        {messages.map((message, index) => (
          <li key={index}>{message}</li>
        ))}
      </ul>
    </div>
  );
}

import React from 'react';
import { BrowserRouter as Router, Switch, Route, Link } from 'react-router-dom';
import MessageSender from './MessageSender';
import MessageList from './MessageList';

function App() {
  return (
    <Router>
      <div>
        <nav>
          <ul>
            <li>
              <Link to="/">发送消息</Link>
            </li>
            <li>
              <Link to="/messages">消息列表</Link>
            </li>
          </ul>
        </nav>

        <Switch>
          <Route exact path="/">
            <MessageSender />
          </Route>
          <Route path="/messages">
            <MessageList />
          </Route>
        </Switch>
      </div>
    </Router>
  );
}

export default App;

npm start