package org.jeecg.modules.message.websocket;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.concurrent.CopyOnWriteArraySet;
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import javax.annotation.Resource;
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import javax.websocket.OnClose;
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import javax.websocket.OnMessage;
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import javax.websocket.OnOpen;
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import javax.websocket.Session;
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import javax.websocket.server.PathParam;
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import javax.websocket.server.ServerEndpoint;
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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 com.alibaba.fastjson.JSONObject;
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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}") //此注解相当于设置访问URL
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public class WebSocket {
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private Session session;
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private String userId;
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private static final String REDIS_TOPIC_NAME = "socketHandler";
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@Resource
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private JeecgRedisClient jeecgRedisClient;
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/**
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* 缓存 webSocket连接到单机服务class中（整体方案支持集群）
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*/
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private static CopyOnWriteArraySet<WebSocket> webSockets = new CopyOnWriteArraySet<>();
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private static Map<String, Session> sessionPool = new HashMap<String, Session>();
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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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this.session = session;
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this.userId = userId;
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webSockets.add(this);
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sessionPool.put(userId, session);
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log.info("【websocket消息】有新的连接，总数为:" + webSockets.size());
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} catch (Exception e) {
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}
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}
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@OnClose
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public void onClose() {
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try {
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webSockets.remove(this);
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sessionPool.remove(this.userId);
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log.info("【websocket消息】连接断开，总数为:" + webSockets.size());
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} catch (Exception e) {
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}
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}
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/**
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* 服务端推送消息
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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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Session session = sessionPool.get(userId);
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if (session != null && session.isOpen()) {
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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("【websocket消息】 单点消息:" + 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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e.printStackTrace();
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}
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}
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}
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/**
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* 服务器端推送消息
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*/
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public void pushMessage(String message) {
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try {
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webSockets.forEach(ws -> ws.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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@OnMessage
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public void onMessage(String message) {
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//todo 现在有个定时任务刷，应该去掉
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log.debug("【websocket消息】收到客户端消息:" + message);
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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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for (WebSocket webSocket : webSockets) {
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webSocket.pushMessage(message);
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}
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}
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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("【websocket消息】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
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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)
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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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}
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