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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                廣播通信就像群聊,任何人發的每一條消息任何一個人都可以接收到。 <br/> 實現步驟如下: **1. 服務端代碼** ```java @Component @ServerEndpoint(value = "/v1/broadcast") public class BroadCastController { //存儲每一個用戶的Session private final static Map<String, Session> onlineUsers = new HashMap<>(1); @OnOpen public void open(Session session) { //當用戶連接進來時存儲每一個用戶的Session onlineUsers.put(session.getId(), session); } @OnMessage public void message(String message) { broadcastAllUsers(message); } //將消息發送給所有人 public static void broadcastAllUsers(String message) { for (Map.Entry<String, Session> entry : onlineUsers.entrySet()) { entry.getValue().getAsyncRemote().sendText(message); } } } ``` **2. 前端代碼** ```java var socket = null function connect() { if (socket == null) { socket = new WebSocket('ws://localhost:8090/v1/broadcast') socket.onmessage = (e) => { console.info(e.data) } } } function send() { socket.send("Hello World!") } ```
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                              哎呀哎呀视频在线观看