ws

whycxzp

2025-03-25 4f86dc69d3e392679fab9deddf7a6903663dbc71

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package com.whyc.webSocket;
 
import com.whyc.config.WebSocketConfig;
import com.whyc.dto.PageAlarm;
import com.whyc.dto.Response;
import com.whyc.service.BattAlarmService;
import com.whyc.service.PowerAlarmService;
import com.whyc.util.ActionUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
 
import javax.servlet.http.HttpSession;
import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
import java.util.HashMap;
import java.util.Map;
 
 
/**
 * 电源告警
 */
@Component
@ServerEndpoint(value = "/powerAlarm/getPage",encoders = WebSocketEncoder.class,configurator = WebSocketConfig.class)
public class PowerAlarmSocket {
    private Session session;
 
    private Thread thread;
 
    private static PowerAlarmService service;
 
    private HttpSession httpSession;
 
    private volatile boolean runFlag = true;
 
    private volatile Map<String, Thread> threadMap = new HashMap<>();
 
    private volatile Map<Long,Boolean> threadFlagMap = new HashMap<>();
 
    @Autowired
    public void setService(PowerAlarmService service) {
        PowerAlarmSocket.service = service;
    }
 
    @OnOpen
    public void onOpen(Session session, EndpointConfig config) {
        this.session = session;
        this.httpSession = (HttpSession) config.getUserProperties().get("httpSession");
    }
    @OnMessage
    public void onMessage(Session session, String message) {
        PageAlarm dto = ActionUtil.getGson("yyyy-MM-dd HH:mm:ss").fromJson(message, PageAlarm.class);
        thread = new Thread("Thread_BattAlarmSocket") {
            @Override
            public void run() {
                while (runFlag && !isInterrupted()) {
                    Thread thread = currentThread();
                    threadFlagMap.put(thread.getId(), true);
                    try {
                        Response res=service.getPage(dto.getAlmLevel(),dto.getStartTime(),dto.getEndTime(),
                                dto.getPageNum(),dto.getPageSize());
                        if (session.isOpen()) {
                            //推送信息
                            synchronized (session) {
                                session.getBasicRemote().sendObject(res);
                            }
                            threadFlagMap.put(thread.getId(), false);
                        }
                        sleep(4000);
                    } 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());
    }
}