STL —— list-CFANZ编程社区

首先先下载ws库

npm install ws

server.js [自定义websocket服务器,记得先用node启动]


const WebSocket = require('ws');

const wss = new WebSocket.Server({ port: 8888 });

wss.on('connection', function connection(ws) {
    console.log('Client connected');

    ws.on('message', function incoming(message) {
        console.log('Received: %s', message);
        
        // Broadcast the received message to all clients
        wss.clients.forEach(function each(client) {
            if (client !== ws && client.readyState === WebSocket.OPEN) {
                client.send(message);
            }
        });
    });
});

test.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Chat Application</title>
  </head>
  <body>
    <div id="chat"></div>
    <input type="text" id="messageInput" />
    <button onclick="sendMessage()">Send</button>

    <script>
        // 简单测试
        
      const socket = new WebSocket("ws://localhost:8888");

      socket.onopen = () => {
        console.log("Connected to the server");
      };

      socket.onmessage = (event) => {
        const message = event.data;

        // 处理Blob消息
        if (message instanceof Blob) {
          const reader = new FileReader();

          reader.onload = function () {
            const text = reader.result;
            displayMessage(text); // 显示转换后的文本
          };

          reader.readAsText(message);
        } else {
          displayMessage(message); // 直接显示普通文本消息
        }
      };

      function displayMessage(message) {
        const chatElement = document.getElementById("chat");
        chatElement.innerHTML += `<p>${message}</p>`;
      }

      function sendMessage() {
        const messageInput = document.getElementById("messageInput");
        const message = messageInput.value.trim();

        if (message) {
          socket.send(message);
          messageInput.value = "";
        } else {
          alert("请输入消息");
        }
      }
    </script>
  </body>
</html>