mqtt
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James-hp
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670740979c
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e0cb765540
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package com.ruoyi.common.mqtt.domain;
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import java.io.Serializable;
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public class MqttBody implements Serializable {
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private int code;
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private String msg;
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private Object body;
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}
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package com.ruoyi.common.mqtt.domain;
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import java.io.Serializable;
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public class MqttHead implements Serializable {
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private int type;
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private String topic;
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private MqttBody body;
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}
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package com.ruoyi.common.mqtt.service;
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import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
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import org.eclipse.paho.client.mqttv3.MqttCallback;
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import org.eclipse.paho.client.mqttv3.MqttMessage;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class Callback implements MqttCallback {
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private static final Logger log = LoggerFactory.getLogger(Callback.class);
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/**
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* MQTT 断开连接会执行此方法
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*/
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@Override
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public void connectionLost(Throwable throwable) {
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log.info("断开了MQTT连接 ：{}", throwable.getMessage());
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log.error(throwable.getMessage(), throwable);
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}
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/**
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* publish发布成功后会执行到这里
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*/
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@Override
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public void deliveryComplete(IMqttDeliveryToken iMqttDeliveryToken) {
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log.info("发布消息成功");
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}
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/**
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* subscribe订阅后得到的消息会执行到这里
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*/
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@Override
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public void messageArrived(String topic, MqttMessage message) throws Exception {
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// TODO 此处可以将订阅得到的消息进行业务处理、数据存储
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log.info("收到来自 " + topic + " 的消息：{}", new String(message.getPayload()));
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}
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}
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package com.ruoyi.common.mqtt.service;
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import org.eclipse.paho.client.mqttv3.*;
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import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
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import org.springframework.stereotype.Component;
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import org.eclipse.paho.client.mqttv3.MqttCallback;
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@Component
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public class MqttService {
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private String HOST = "tcp://127.0.0.1:1883"; //mqtt服务器的地址和端口号
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private final String clientId = "DC" + (int) (Math.random() * 100000000);
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private MqttClient mqttClient;
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/**
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* 客户端connect连接mqtt服务器
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*
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* @param userName 用户名
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* @param passWord 密码
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* @param mqttCallback 回调函数
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**/
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public void setMqttClient(String userName, String passWord, MqttCallback mqttCallback) throws MqttException {
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MqttConnectOptions options = mqttConnectOptions(userName, passWord);
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if (mqttCallback == null) {
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mqttClient.setCallback(new Callback());
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} else {
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mqttClient.setCallback(mqttCallback);
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}
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mqttClient.connect(options);
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}
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/**
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* MQTT连接参数设置
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*/
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private MqttConnectOptions mqttConnectOptions(String userName, String passWord) throws MqttException {
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mqttClient = new MqttClient(HOST, clientId, new MemoryPersistence());
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MqttConnectOptions options = new MqttConnectOptions();
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options.setUserName(userName);
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options.setPassword(passWord.toCharArray());
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options.setConnectionTimeout(10);///默认：30
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options.setAutomaticReconnect(true);//默认：false
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options.setCleanSession(false);//默认：true
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//options.setKeepAliveInterval(20);//默认：60
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return options;
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}
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/**
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* 关闭MQTT连接
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*/
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public void close() throws MqttException {
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mqttClient.close();
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mqttClient.disconnect();
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}
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/**
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* 向某个主题发布消息 默认qos：1
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*
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* @param topic:发布的主题
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* @param msg：发布的消息
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*/
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public void pub(String topic, String msg) throws MqttException {
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MqttMessage mqttMessage = new MqttMessage();
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//mqttMessage.setQos(2);
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mqttMessage.setPayload(msg.getBytes());
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MqttTopic mqttTopic = mqttClient.getTopic(topic);
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MqttDeliveryToken token = mqttTopic.publish(mqttMessage);
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token.waitForCompletion();
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}
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/**
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* 向某个主题发布消息
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*
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* @param topic: 发布的主题
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* @param msg: 发布的消息
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* @param qos: 消息质量 Qos：0、1、2
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*/
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public void pub(String topic, String msg, int qos) throws MqttException {
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MqttMessage mqttMessage = new MqttMessage();
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mqttMessage.setQos(qos);
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mqttMessage.setPayload(msg.getBytes());
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MqttTopic mqttTopic = mqttClient.getTopic(topic);
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MqttDeliveryToken token = mqttTopic.publish(mqttMessage);
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token.waitForCompletion();
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}
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/**
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* 订阅某一个主题 ，此方法默认的的Qos等级为：1
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*
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* @param topic 主题
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*/
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public void sub(String topic) throws MqttException {
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mqttClient.subscribe(topic);
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}
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/**
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* 订阅某一个主题，可携带Qos
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*
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* @param topic 所要订阅的主题
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* @param qos 消息质量：0、1、2
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*/
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public void sub(String topic, int qos) throws MqttException {
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mqttClient.subscribe(topic, qos);
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}
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/**
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* main函数自己测试用
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*/
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public static void main(String[] args) throws MqttException {
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MqttService mqttConnect = new MqttService();
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mqttConnect.setMqttClient("admin", "public", new Callback());
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mqttConnect.pub("com/iot/init", "Mr.Qu" + (int) (Math.random() * 100000000));
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//mqttConnect.sub("com/iot/init");
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}
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/**
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* main函数自己测试用
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*/
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public static void main1(String[] args) throws MqttException {
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MqttService mqttConnect = new MqttService();
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mqttConnect.setMqttClient("admin", "public", new Callback());
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mqttConnect.pub("com/iot/init", "Mr.Qu" + (int) (Math.random() * 100000000));
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//mqttConnect.sub("com/iot/init");
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}
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}
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@ -0,0 +1,12 @@
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package com.ruoyi.common.mqtt.service;
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import org.eclipse.paho.client.mqttv3.MqttException;
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public class ss {
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public static void main(String[] args) throws MqttException {
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MqttService mqttConnect = new MqttService();
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mqttConnect.setMqttClient("admin", "public", new Callback());
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mqttConnect.pub("com/iot/init", "Mr.Qu" + (int) (Math.random() * 100000000));
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//mqttConnect.sub("com/iot/init");
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}
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}
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@ -1,7 +0,0 @@
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package com.ruoyi.common.redis.service;
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import org.springframework.stereotype.Component;
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@Component
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public class MqttService {
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}
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