SpringBoot后端集成WebSocket

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-websocket</artifactId>
        <version>${websocket.version}</version>
</dependency>

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

/**
 * @author lizw
 */
@Component
public class WebSocketConfig {

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

}

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.CopyOnWriteArraySet;

/**
 * @author lizw
 */
@Component
@ServerEndpoint("/websocket")
@Slf4j
public class WebSocket {

    private Session session;

    //此处要用static修饰，形成线程间共享
    private static final CopyOnWriteArraySet<WebSocket> webSockets = new CopyOnWriteArraySet<>();

    @OnOpen
    public void open(Session session){
        this.session = session;
        webSockets.add(this);
        log.info("【WebSocket有新的连接】size={}",webSockets.size());
    }

    @OnClose
    public void close(){
        webSockets.remove(this);
        log.info("【WebSocket断开连接】size={}",webSockets.size());
    }

    /**
     * client send message to server
     * @param message 消息体
     */
    @OnMessage
    public void acceptMessage(String message){
        log.info("【WebSocket消息】收到客户端消息",message);
    }

    public void sendMessage(String message){
        for (WebSocket webSocket : webSockets){
            log.info("【websocket消息】广播消息, message={}", message);
            try {
                webSocket.session.getBasicRemote().sendText(message);
            } catch (IOException e) {
                e.printStackTrace();
                log.error("【WebSocket发送消息】消息发送异常 message={}",message);
            }
        }
    }

}