SpringBoot整合WebSocket

实现效果 两个客户端相互发消息：

    
        
        
    

    

    发送消息
    
    

    接收消息
    
    

        
    

        
            org.springframework.boot
            spring-boot-starter-websocket
        

package com.janet;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;


@Configuration
public class WebSocketConfig {

    
    @Bean
    public ServerEndpointExporter serverEndpointExporter(){
        return new ServerEndpointExporter();
    }

}

3. 服务类

package com.janet;

import io.netty.util.internal.ConcurrentSet;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicInteger;


@ServerEndpoint("/ws")
@Component
@Slf4j
public class WebSocketServer {
    
    private static AtomicInteger personNum = new AtomicInteger();

    
    private static ConcurrentSet webSocketSet = new ConcurrentSet<>();

    
    private Session session;


    
    @OnOpen
    public void onOpen(Session session) {
        this.session = session;
        webSocketSet.add(this);
        personNum.incrementAndGet();
        log.info("新用户上线，当前在线人数:{}", personNum.get());
    }


    @OnClose
    public void onClose() {
        webSocketSet.remove(this);
        personNum.decrementAndGet();
        log.info("用户下线，当前在线人数:{}", personNum.get());
    }


    @OnMessage
    public void onMessage(String message, Session session) throws IOException {
        log.info("来自客户{}的消息：{}", session.getId(), message);
        for (WebSocketServer webSocketServer : webSocketSet) {
            webSocketServer.session.getBasicRemote().sendText(session.getId() + "说：" + message);
        }
    }

}

这样就ok啦~