package org.jeecg.modules.message.websocket;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.TimeUnit;
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import javax.annotation.Resource;
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import javax.websocket.*;
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import javax.websocket.server.PathParam;
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import javax.websocket.server.ServerEndpoint;
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import com.alibaba.fastjson.JSONObject;
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import org.jeecg.common.base.BaseMap;
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import org.jeecg.common.constant.WebsocketConst;
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import org.jeecg.common.modules.redis.client.JeecgRedisClient;
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import org.springframework.stereotype.Component;
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import lombok.extern.slf4j.Slf4j;
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/**
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* @Author scott
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* @Date 2019/11/29 9:41
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* @Description: 此注解相当于设置访问URL
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*/
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@Component
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@Slf4j
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@ServerEndpoint("/websocket/{userId}")
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public class WebSocket {
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/**线程安全Map*/
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private static ConcurrentHashMap<String, Session> sessionPool = new ConcurrentHashMap<>();
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/**
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* Redis触发监听名字
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*/
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public static final String REDIS_TOPIC_NAME = "socketHandler";
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@Resource
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private JeecgRedisClient jeecgRedisClient;
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private ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
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//==========【websocket接受、推送消息等方法 —— 具体服务节点推送ws消息】========================================================================================
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@OnOpen
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public void onOpen(Session session, @PathParam(value = "userId") String userId) {
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try {
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sessionPool.put(userId, session);
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log.info("【系统 WebSocket】有新的连接，总数为:" + sessionPool.size());
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// 启动心跳任务，每分钟发送一次心跳消息
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// scheduler.scheduleAtFixedRate(() -> {
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// pushMessage(userId, "{\"cmd\":\"" + WebsocketConst.CMD_USER + "\",\"txt\":\"" + "心跳响应" + "\"}");
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// }, 0, 1, TimeUnit.MINUTES);
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} catch (Exception e) {
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log.error("【系统 WebSocket】onOpen 异常", e);
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}
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}
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@OnClose
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public void onClose(@PathParam("userId") String userId) {
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try {
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sessionPool.remove(userId);
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log.info("【系统 WebSocket】连接断开，总数为:" + sessionPool.size());
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// 取消心跳任务
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scheduler.shutdown();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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/**
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* ws推送消息
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*
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* @param userId
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* @param message
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*/
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public void pushMessage(String userId, String message) {
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for (Map.Entry<String, Session> item : sessionPool.entrySet()) {
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//userId key值= {用户id + "_"+ 登录token的md5串}
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//TODO vue2未改key新规则，暂时不影响逻辑
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if (item.getKey().contains(userId)) {
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Session session = item.getValue();
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try {
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//update-begin-author:taoyan date:20211012 for: websocket报错 https://gitee.com/jeecg/jeecg-boot/issues/I4C0MU
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synchronized (session){
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log.info("【系统 WebSocket】推送单人消息:" + message);
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session.getBasicRemote().sendText(message);
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}
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//update-end-author:taoyan date:20211012 for: websocket报错 https://gitee.com/jeecg/jeecg-boot/issues/I4C0MU
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} catch (Exception e) {
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log.error(e.getMessage(),e);
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}
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}
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}
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}
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/**
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* ws遍历群发消息
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*/
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public void pushMessage(String message) {
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try {
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for (Map.Entry<String, Session> item : sessionPool.entrySet()) {
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try {
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item.getValue().getAsyncRemote().sendText(message);
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} catch (Exception e) {
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log.error(e.getMessage(), e);
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}
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}
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log.info("【3D实时数据 WebSocket】消息" );
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} catch (Exception e) {
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log.error(e.getMessage(), e);
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}
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}
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/**
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* ws接受客户端消息
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*/
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@OnMessage
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public void onMessage(String message, @PathParam(value = "userId") String userId) {
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if(!"ping".equals(message) && !WebsocketConst.CMD_CHECK.equals(message)){
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log.info("【系统 WebSocket】收到客户端消息:" + message);
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}else{
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log.debug("【系统 WebSocket】收到客户端消息:" + message);
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}
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//------------------------------------------------------------------------------
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// JSONObject obj = new JSONObject();
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// //业务类型
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// obj.put(WebsocketConst.MSG_CMD, WebsocketConst.CMD_CHECK);
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// //消息内容
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// obj.put(WebsocketConst.MSG_TXT, "心跳响应");
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// this.pushMessage(userId, obj.toJSONString());
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//------------------------------------------------------------------------------
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}
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/**
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* 配置错误信息处理
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*
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* @param session
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* @param t
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*/
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@OnError
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public void onError(Session session, Throwable t) {
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log.warn("【系统 WebSocket】消息出现错误",t);
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//t.printStackTrace();
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}
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//==========【系统 WebSocket接受、推送消息等方法 —— 具体服务节点推送ws消息】========================================================================================
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//==========【采用redis发布订阅模式——推送消息】========================================================================================
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/**
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* 后台发送消息到redis
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*
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* @param message
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*/
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public void sendMessage(String message) {
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//log.info("【系统 WebSocket】广播消息:" + message);
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BaseMap baseMap = new BaseMap();
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baseMap.put("userId", "");
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baseMap.put("message", message);
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jeecgRedisClient.sendMessage(REDIS_TOPIC_NAME, baseMap);
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}
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/**
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* 此为单点消息 redis
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*
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* @param userId
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* @param message
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*/
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public void sendMessage(String userId, String message) {
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BaseMap baseMap = new BaseMap();
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baseMap.put("userId", userId);
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baseMap.put("message", message);
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jeecgRedisClient.sendMessage(REDIS_TOPIC_NAME, baseMap);
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}
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/**
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* 此为单点消息(多人) redis
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*
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* @param userIds
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* @param message
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*/
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public void sendMessage(String[] userIds, String message) {
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for (String userId : userIds) {
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sendMessage(userId, message);
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}
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}
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// 此为单点消息
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public void sendOneMessage(String userId, String message) {
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Session session = sessionPool.get(userId);
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if (session != null&&session.isOpen()) {
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try {
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log.info("【websocket消息】 单点消息:"+message);
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session.getAsyncRemote().sendText(message);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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//=======【采用redis发布订阅模式——推送消息】==========================================================================================
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}
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