java连接websocket服务器并发送消息

- 日理万妓 2024-03-17 16:04 83阅读 0赞

#### 一、用python快速启动一个websocker服务器 ####

import tornado.ioloop
    import tornado.web
    import tornado.websocket
    
    
    class WebSocketHandler(tornado.websocket.WebSocketHandler):
        def open(self):
            print("WebSocket 连接已建立")
    
        def on_message(self, message):
            print("收到消息：", message)
            self.write_message("收到了你的消息：" + message)
    
        def on_close(self):
            print("WebSocket 连接已关闭")
    
    
    def make_app():
        return tornado.web.Application([
            (r"/websocket", WebSocketHandler),
        ])
    
    
    if __name__ == "__main__":
        app = make_app()
        app.listen(8080)
        print("WebSocket 服务器已启动，端口号：8080")
        tornado.ioloop.IOLoop.current().start()

#### 二、使用java连接并发送消息 ####

package com.ciih.iot.common.util;
    
    
    import javax.websocket.*;
    import java.net.URI;
    
    @ClientEndpoint
    public class WebSocketClient {
    
        @OnOpen
        public void onOpen(Session session) {
            System.out.println("Connection established");
            try {
                // 发送一条消息到服务器
                session.getBasicRemote().sendText("Hello, WebSocket Server!");
                System.out.println("建立连接");
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
        @OnMessage
        public void onMessage(String message) {
            System.out.println("Received message: " + message);
        }
    
        @OnClose
        public void onClose(Session session, CloseReason reason) {
            System.out.println("Connection closed: " + reason.getReasonPhrase());
        }
    
    
        public static void pushMessage(String url, String message) {
            try {
                WebSocketContainer container = ContainerProvider.getWebSocketContainer();
                Session session = container.connectToServer(WebSocketClient.class, new URI(url));
                session.getBasicRemote().sendText(message);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
        public static void main(String[] args) {
            WebSocketClient.pushMessage("ws://localhost:8080/websocket","来自火星");
        }
    }