根据空调设备id实时推送空调信息

lxw

2023-07-01 937649a7c13870534bf2106199bfe074c584d32d

根据空调设备id实时推送空调信息

 src/main/java/com/whyc/service/AirconditionerStateService.java

@@ -1,7 +1,24 @@
package com.whyc.service;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.whyc.mapper.AirconditionerStateMapper;
import com.whyc.pojo.AirconditionerState;
import com.whyc.pojo.Response;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class AirconditionerStateService {
    @Autowired(required = false)
    private AirconditionerStateMapper mapper;

    //获取空调实时数据
    public Response getStateSocket(int devId) {
        QueryWrapper wrapper= Wrappers.query();
        wrapper.eq("dev_id",devId);
        wrapper.last("limit 1");
        AirconditionerState state=mapper.selectOne(wrapper);
        return new Response().setII(1,state!=null,state,"获取空调实时数据");
    }
}

 src/main/java/com/whyc/webSocket/AirStateWebSocket.java

New file
@@ -0,0 +1,102 @@
package com.whyc.webSocket;

import com.whyc.pojo.AirconditionerState;
import com.whyc.service.AirconditionerStateService;
import com.whyc.service.EnvironmentInfService;
import com.whyc.util.WebSocketEncoderUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
import java.util.HashMap;
import java.util.Map;

@Component
@ServerEndpoint(value = "/airSocket",encoders = WebSocketEncoderUtil.class)
public class AirStateWebSocket {
    private volatile Thread thread;

    private static final int executeTime = 5000;

    private volatile boolean runFlag=true;

    private volatile Map<String,Thread> threadMap = new HashMap<>();

    private volatile Map<Long,Boolean> threadFlagMap = new HashMap<>();

    private static AirconditionerStateService service;

    private Session session;

    @Autowired
    public void setService(AirconditionerStateService service){
        AirStateWebSocket.service = service;
    }

    @OnOpen
    public void onOpen(Session session){
        this.session=session;
    }

    @OnMessage
    public void onMessage(Session session, String message){
         /*HttpSession httpSession = (HttpSession) config.getUserProperties().get("httpSession");
        UserInf user = (UserInf) httpSession.getAttribute("user");
        final int userId = user.getUId().intValue();
        final int userId = 1001;*/
        int devId=Integer.parseInt(message);
        thread = new Thread("Thread_airSocket") {
            @Override
            public void run() {
                while (runFlag && !isInterrupted()) {
                    Thread thread = currentThread();
                    threadFlagMap.put(thread.getId(), true);
                    try {
                        if (session.isOpen()) {
                            //推送信息
                            synchronized (session) {
                                session.getBasicRemote().sendObject(service.getStateSocket(devId));
                            }
                            threadFlagMap.put(thread.getId(), false);
                        }
                        sleep(executeTime);
                        //} catch (IOException | InterruptedException | EncodeException e) {
                    } catch (Exception e) {
                        interrupt();
                    }
                }
            }
        };
        thread.start();
        threadFlagMap.put(thread.getId(), true);
        //停止老的socket线程
        Thread threadBefore = threadMap.get(session.getId());
        if (threadBefore != null && threadBefore.isAlive()) {
            while (threadFlagMap.get(threadBefore.getId())) {
            }
            threadBefore.interrupt();
        }
        //将线程存储,便于调用定位
        threadMap.put(session.getId(), this.thread);
    }

    @OnClose
    public void onClose(CloseReason closeReason){
        System.err.println("closeReason = " + closeReason);
        runFlag = false;
        if (thread != null && thread.isAlive()) {
            thread.interrupt();
        }
        threadMap.remove(session.getId());
    }

    @OnError
    public void onError(Throwable error) {
        error.printStackTrace();
        if (thread != null && thread.isAlive()) {
            thread.interrupt();
        }
        threadMap.remove(session.getId());
    }
}

 src/main/java/com/whyc/webSocket/HomePageWebSocket.java

@@ -77,7 +77,7 @@
    }

    @OnMessage
    public void onMessage(Session session, String uId){
    public void onMessage(Session session, String message){
    }

    @OnClose