SprinngBoot下集成webSock的几种方式

package cn.microvideo.flowac.sys.util;

import cn.microvideo.flowac.sys.entity.LocalSysMsgForWSBean;
import cn.microvideo.flowac.sys.entity.WSMsgModuleEnum;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import javax.annotation.Resource;


@Component
public class WebSocketUtil {

    private static WebSocketUtil instance;

    // TODO 暂时使用kafkaOne对象，后续可能会更改为系统自己的kafka
    @Resource(name = "kafkaOneTemplate")
    private KafkaTemplate kafkaTemplate;
    @Value("${localSysMessageForWSTopic}")
    private String localSysMessageForWSTopic;

    
    @PostConstruct
    public void init() {
        instance = this;
    }

    
    public static void sendForWS(Object message, WSMsgModuleEnum moduleEnum) {
        LocalSysMsgForWSBean bean = createBean(message, moduleEnum, 0);
        instance.kafkaTemplate.send(instance.localSysMessageForWSTopic, GsonUtil.toJson(bean));
    }

    
    public static void sendForWSByUnit(Object message, WSMsgModuleEnum moduleEnum, String unitCode) {
        LocalSysMsgForWSBean bean = createBean(message, moduleEnum, 1);
        bean.setUnitCode(unitCode);
        instance.kafkaTemplate.send(instance.localSysMessageForWSTopic, GsonUtil.toJson(bean));
    }

    
    public static void sendForWSByUser(Object message, WSMsgModuleEnum moduleEnum, String userId) {
        LocalSysMsgForWSBean bean = createBean(message, moduleEnum, 2);
        bean.setUserId(userId);
        instance.kafkaTemplate.send(instance.localSysMessageForWSTopic, GsonUtil.toJson(bean));
    }

    
    private static LocalSysMsgForWSBean createBean(Object message, WSMsgModuleEnum moduleEnum, Integer sendType) {
        LocalSysMsgForWSBean bean = new LocalSysMsgForWSBean();
        bean.setModule(moduleEnum.getModule());
        bean.setMessageType(moduleEnum.getMessageType());
        bean.setSendType(sendType);
        bean.setMessage(message);
        return bean;
    }

}

package com.microvideo.ewcp.configration;


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();
    }
}

package  com.microvideo.ewcp.configration;

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.PathParam;
import javax.websocket.server.ServerEndpoint;

import org.springframework.stereotype.Component;


@Component
@ServerEndpoint("/websocket/{sid}/{rid}")
public class WebSocketServer {

	//静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。
    private static int onlineCount = 0;
    
    //concurrent包的线程安全Set，用来存放每个客户端对应的MyWebSocket对象。
    private static CopyOnWriteArraySet webSocketSet = new CopyOnWriteArraySet();

    //与某个客户端的连接会话，需要通过它来给客户端发送数据
    private Session session;

    //接收sid
    private String sid="";

    public static final String event = "fk_centerid";//在线单位集合key

    
    @OnOpen
    public void onOpen(Session session,@PathParam("sid") String sid,@PathParam("rid") String rid) {
        this.session = session;
        webSocketSet.add(this);     //加入set中
        addOnlineCount();           //在线数加1
        this.sid=sid;
    }

    
    @OnClose
    public void onClose(@PathParam("rid") String rid) {
        webSocketSet.remove(this);  //从set中删除
        subOnlineCount();           //在线数减1
    }

    
    @OnMessage
    public void onMessage(String message, Session session) {
        //群发消息
        for (WebSocketServer item : webSocketSet) {
            try {
                item.sendMessage(message);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    
    @OnError
    public void onError(Session session, Throwable error) {
        error.printStackTrace();
    }
    
    
    public void sendMessage(String message) throws IOException {
        this.session.getBasicRemote().sendText(message);
    }

    
    public static void sendInfo(String message,@PathParam("sid") String sid) throws IOException {
        for (WebSocketServer item : webSocketSet) {
            try {
            	//这里可以设定只推送给这个sid的，为null则全部推送
            	if(sid==null) {
            		item.sendMessage(message);
            	}else if(item.sid.equals(sid)){
            		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--;
    }
}