增加新的websocket版本

kaiyu

2020-12-15 11bb93e34b91a8ba4c5588dbe907988a1f279859

增加新的websocket版本

 src/main/java/com/moral/webSocketServer/BSAQIWebSocketServerTest.java

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package com.moral.webSocketServer;

import com.alibaba.fastjson.JSON;
import com.moral.entity.Device;
import com.moral.entity.Sensor;
import com.moral.service.DeviceService;
import com.moral.service.SensorService;
import com.moral.util.RabbitMQUtils;
import com.rabbitmq.client.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

@Slf4j
@ServerEndpoint("/web/AQIWebSocketTest/{param}")
@Component
public class BSAQIWebSocketServerTest {

    public static SensorService sensorService;

    public static DeviceService deviceService;

    /**
     * concurrent包的线程安全Set，用来存放每个客户端对应的WebSocket对象。
     */
    private static ConcurrentHashMap<String, BSAQIWebSocketServerTest> webSocketMap = new ConcurrentHashMap<>();
    /**
     * 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;

    private String orgId;

    private String accountId;

    private String mac;

    private final String exchange = "screens_data";

    private static Map<String, Sensor> sensors;

    @PostConstruct
    public void init() {
        sensors = new HashMap<>();
        List<Sensor> allSensors = sensorService.getAllSensors();
        for (Sensor sensor : allSensors) {
            sensors.put(sensor.getSensorKey(), sensor);
        }
    }

    @OnOpen
    public void onOpen(Session session, @PathParam("param") String param) {
        this.session = session;
        String[] params = param.split("&");
        this.accountId = params[0];
        this.orgId = params[1];
        this.mac = params[2];

        if (webSocketMap.containsKey(accountId)) {
            webSocketMap.remove(accountId);
            webSocketMap.put(accountId, this);
        } else {
            webSocketMap.put(accountId, this);
        }


        try {
            Connection connection = RabbitMQUtils.getConnection();
            final Channel channel = connection.createChannel();
            //生成临时队列
            String queue = channel.queueDeclare().getQueue();
            //交换机与队列通过routingKey进行绑定
            String routingKey = "";
            routingKey = this.orgId + "." + this.mac;
            channel.queueBind(queue, exchange, routingKey);


            //消费消息,手动确认模式。
            channel.basicQos(30);//预先读取数
            channel.basicConsume(queue, false, new DefaultConsumer(channel) {
                @Override
                public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                    try{
                        //对从MQ中取出的数据做转换，并且发送风速到客户端
                        Map message = (Map) JSON.parse((String) JSON.parse(new String(body)));
                        Device device = deviceService.getDeviceByMac(mac,false);
                        sendDeviceInfo(message, device);
                        //手动确认
                        channel.basicAck(envelope.getDeliveryTag(), true);
                        //判断socket是否已经断开
                        if (!webSocketMap.containsKey(accountId)) {
                            RabbitMQUtils.closeConnectionChannel(connection, channel);
                        }
                    }catch (Exception e){
                        log.error(e.getMessage());
                        RabbitMQUtils.closeConnectionChannel(connection, channel);
                    }
                }
            });
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @OnClose
    public void onClose() {
        if (webSocketMap.containsKey(accountId)) {
            webSocketMap.remove(accountId);
        }
    }

    //接收到客户端消息操作
    @OnMessage
    public void onMessage(String message, Session session) {

    }

    @OnError
    public void onError(Session session, Throwable error) {
        log.error(error.getMessage());
    }

    public void sendMessage(String message) throws IOException {
        try {
            if (session.isOpen()) {
                this.session.getBasicRemote().sendText(message);
            }
        } catch (IOException e) {

            //log.error(e.getMessage());
        }
    }

    /**
     * @Description: 接收前端mac以及accountid，传送前端指定mac号的设备信息
     * @Param: [param]
     * @return: void
     * @Author: 陈凯裕
     * @Date: 2020/9/30
     */
    private void sendDeviceInfo(Map<String, Object> param, Device device) {

        try {
            Map<String, Object> sortMap = new LinkedHashMap<>();
            //先放名称地址，用于排序
            sortMap.put("name", device.getName());
            sortMap.put("address", device.getAddress());
            //将传感器代号转化为汉字
            sortMap.putAll(param);
            sendMessage(JSON.toJSONString(sortMap));
        } catch (IOException e) {
            log.error("根据mac发送设备数据异常");
        }
    }

}