1、程序化哈格里夫斯（Hargreaves）公式； 2、实现每日定时任务，计算作物蒸腾量，并存储数据库

liurunyu

2025-08-19 ee5f607999c657ccad03c78cfdc10adf6561f538

 pipIrr-platform/pipIrr-web/pipIrr-web-app/src/main/java/com/dy/pipIrrApp/workOrder/mqtt/MqttMsgSubscriber.java

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package com.dy.pipIrrApp.workOrder.mqtt;

import lombok.extern.slf4j.Slf4j;
import org.eclipse.paho.client.mqttv3.*;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;

/**
 * @author ZhuBaoMin
 * @date 2024-11-16 11:29
 * @LastEditTime 2024-11-16 11:29
 * @Description 初始化一个Mqtt客户端，并根据配置订阅topic
 */

@Slf4j
public class MqttMsgSubscriber {

    public void readSubscribeTopicMessage(){
        try {
            //String broker = "tcp://127.0.0.1:1883";
            //String username = "mqtt_u";
            //String password = "yjy";
            //String topic = "workOrder";
            String broker = "tcp://127.0.0.1:1884";
            String username = "server";
            String password = "1234";
            String topic = "report/#";

            Integer qos = 2;
            String clientId = System.currentTimeMillis() + "";

            MqttClient client = new MqttClient(broker, clientId, new MemoryPersistence());

            // 连接参数
            MqttConnectOptions options = new MqttConnectOptions();
            options.setUserName(username);
            options.setPassword(password.toCharArray());
            //是否清除会话
            options.setCleanSession(true);
            options.setConnectionTimeout(60);
            options.setKeepAliveInterval(60);
            client.setCallback(new MqttCallback() {

                @Override
                public void connectionLost(Throwable throwable) {
                    log.error("连接丢失");
                }

                @Override
                public void messageArrived(String s, MqttMessage mqttMessage) throws Exception {
                    log.info("topic为: " + topic);
                    log.info("qos为: " + mqttMessage.getQos());
                    log.info("消息内容为: " + new String(mqttMessage.getPayload()));
                }

                @Override
                public void deliveryComplete(IMqttDeliveryToken iMqttDeliveryToken) {
                    // 当消息被完全传送出去后调用
                    log.info("交付完成 ---Delivery complete!");
                    // 可以在这里处理一些发送完成后的清理工作
                }
            });

            client.connect(options);
            client.subscribe(topic, qos);
        } catch (MqttException e){
            log.error("MqttMsgSubscriber 连接启动异常：{}", e.getMessage());
        } catch (Exception e){
            log.error("MqttMsgSubscriber 读取消息异常：{}", e.getMessage());
        }
    }
}