<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-websocket</artifactId>
        </dependency>

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

package com.star.manager.service;
import java.io.IOException;
import java.util.concurrent.CopyOnWriteArraySet;
import javax.websocket.OnClose;
import javax.websocket.OnError;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
@Slf4j
//@ServerEndpoint("/websocket/{user}")
@ServerEndpoint(value = "/websocket")
@Component
public class WebSocketServer {
    //靜態(tài)變量，用來記錄當(dāng)前在線連接數(shù)。應(yīng)該把它設(shè)計(jì)成線程安全的。
    private static int onlineCount = 0;
    //concurrent包的線程安全Set，用來存放每個(gè)客戶端對(duì)應(yīng)的MyWebSocket對(duì)象。
    private static CopyOnWriteArraySet<WebSocketServer> webSocketSet = new CopyOnWriteArraySet<WebSocketServer>();
    //與某個(gè)客戶端的連接會(huì)話，需要通過它來給客戶端發(fā)送數(shù)據(jù)
    private Session session;
    /**
     * 連接建立成功調(diào)用的方法*/
    @OnOpen
    public void onOpen(Session session) {
        this.session = session;
        webSocketSet.add(this);     //加入set中
        addOnlineCount();           //在線數(shù)加1
        log.info("有新連接加入！當(dāng)前在線人數(shù)為" + getOnlineCount());
        try {
             sendMessage("連接成功");
        } catch (IOException e) {
            log.error("websocket IO異常");
        }
    }
    //    //連接打開時(shí)執(zhí)行
    //    @OnOpen
    //    public void onOpen(@PathParam("user") String user, Session session) {
    //        currentUser = user;
    //        System.out.println("Connected ... " + session.getId());
    //    }
 
    /**
     * 連接關(guān)閉調(diào)用的方法
     */
    @OnClose
    public void onClose() {
        webSocketSet.remove(this);  //從set中刪除
        subOnlineCount();           //在線數(shù)減1
        log.info("有一連接關(guān)閉！當(dāng)前在線人數(shù)為" + getOnlineCount());
    }
 
    /**
     * 收到客戶端消息后調(diào)用的方法
     *
     * @param message 客戶端發(fā)送過來的消息*/
    @OnMessage
    public void onMessage(String message, Session session) {
        log.info("來自客戶端的消息:" + message);
 
        //群發(fā)消息
        for (WebSocketServer item : webSocketSet) {
            try {
                item.sendMessage(message);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
 
    /**
     * 
     * @param session
     * @param error
     */
    @OnError
    public void onError(Session session, Throwable error) {
        log.error("發(fā)生錯(cuò)誤");
        error.printStackTrace();
    }
 
    public void sendMessage(String message) throws IOException {
        this.session.getBasicRemote().sendText(message);
    }
 
    /**
     * 群發(fā)自定義消息
     * */
    public static void sendInfo(String message) throws IOException {
        log.info(message);
        for (WebSocketServer item : webSocketSet) {
            try {
                item.sendMessage(message);
            } catch (IOException e) {
                continue;
            }
        }
    }
 
    public static synchronized int getOnlineCount() {
        return onlineCount;
    }
 
    public static synchronized void addOnlineCount() {
        WebSocketServer.onlineCount++;
    }
 
    public static synchronized void subOnlineCount() {
        WebSocketServer.onlineCount--;
    }
}

     @RequestMapping(value="/pushVideoListToWeb",method=RequestMethod.POST,consumes = "application/json")
     public @ResponseBody Map<String,Object> pushVideoListToWeb(@RequestBody Map<String,Object> param) {
         Map<String,Object> result =new HashMap<String,Object>();
         try {
             WebSocketServer.sendInfo("有新客戶呼入,sltAccountId:"+CommonUtils.getValue(param, "sltAccountId"));
             result.put("operationResult", true);
         }catch (IOException e) {
             result.put("operationResult", true);
         }
         return result;
     }

    public void sendMessage(String message) throws IOException {
        this.session.getBasicRemote().sendText(message);
    }

//socket = new WebSocket("ws://localhost:9094/starManager/websocket/張三");
        var socket;
        if(typeof(WebSocket) == "undefined") {
            console.log("您的瀏覽器不支持WebSocket");
        }else{
            console.log("您的瀏覽器支持WebSocket");
            
            //實(shí)現(xiàn)化WebSocket對(duì)象，指定要連接的服務(wù)器地址與端口  建立連接
            //socket = new WebSocket("ws://localhost:9094/starManager/websocket/張三")

            socket = new WebSocket("ws://localhost:9094/starManager/websocket");
            //打開事件
            socket.onopen = function() {
                console.log("Socket 已打開");
                //socket.send("這是來自客戶端的消息" + location.href + new Date());
            };
            //獲得消息事件
            socket.onmessage = function(msg) {
                console.log(msg.data);
                //發(fā)現(xiàn)消息進(jìn)入    調(diào)后臺(tái)獲取
                getCallingList();
            };
            //關(guān)閉事件
            socket.onclose = function() {
                console.log("Socket已關(guān)閉");
            };
            //發(fā)生了錯(cuò)誤事件
            socket.onerror = function() {
                alert("Socket發(fā)生了錯(cuò)誤");
            }
             $(window).unload(function(){
                  socket.close();
                });
 
//                                    $("#btnSend").click(function() {
//                                        socket.send("這是來自客戶端的消息" + location.href + new Date());
//                                    });
//
//                                    $("#btnClose").click(function() {
//                                        socket.close();
//                                    });
        }

socket = new WebSocket("ws://localhost:9094/starManager/websocket");