ruoyi整合mqtt-526互联

https://www.cnblogs.com/SjhCode/p/mqtt.html

ruoyi整合mqtt

mqtt
报错客户机未连接32104，可能是没连接上，也可能是两个客户端clientID相同，也可能是同一台机子subscribe(Topic,Qos)订阅了多次
在消费时，需要对方的通道有发送测试信息，我们才能取出来消费，消费完出队。

本地测试：

https://mqttx.app/zh

下载MQTTX测试工具，创建新连接，创建订阅。

将配置文件中的信息对应填写，编写java代码启动项目；

在MQTTX中的发送窗口中，选好对应topic，写入json发送。

看到控制台有log输出则成功；

导入依赖

        <!-- mqtt -->
        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-stream</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-mqtt</artifactId>
        </dependency>

配置

  mqtt:
    username: admin
    password: admin
    host-url: tcp://broker.emqx.io:1883   # 服务器的地址和端口，这个需要改
    clientID: test1000    # 这个改不改随意，但不同的客户端肯定不能一样
    default-topic: testtopic/1       # 默认主题
    timeout: 100
    keepalive: 100

package com.ruoyi.web.controller.Mqtt;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

/**
 * @Classname MqttConfig
 * @Description mqtt相关配置信息
 * @Date 2020/3/5 11:00
 * @Created by bam
 */
@Component
@ConfigurationProperties("spring.mqtt")
public class MqttConfig {
    @Autowired
    private MqttPushClient mqttPushClient;

    /**
     * 用户名
     */
    // @Value("username")
    private String username;
    /**
     * 密码
     */
    private String password;
    /**
     * 连接地址
     */
    private String hostUrl;
    /**
     * 客户Id
     */
    private String clientID;
    /**
     * 默认连接话题
     */
    private String defaultTopic;
    /**
     * 超时时间
     */
    private int timeout;
    /**
     * 保持连接数
     */
    private int keepalive;

    @Bean
    public MqttPushClient getMqttPushClient() {
//        System.out.println("hostUrl: "+ hostUrl);
//        System.out.println("clientID: "+ clientID);
//        System.out.println("username: "+ username);
//        System.out.println("password: "+ password);
//        System.out.println("timeout: "+timeout);
//        System.out.println("keepalive: "+ keepalive);
        mqttPushClient.connect(hostUrl, clientID, username, password, timeout, keepalive);
        System.out.println("MQTT服务启动成功");
        // 以/#结尾表示订阅所有以test开头的主题
        mqttPushClient.subscribe(defaultTopic, 0);
        return mqttPushClient;
    }


    public void setMqttPushClient(MqttPushClient mqttPushClient) {
        this.mqttPushClient = mqttPushClient;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getHostUrl() {
        return hostUrl;
    }

    public void setHostUrl(String hostUrl) {
        this.hostUrl = hostUrl;
    }

    public String getClientID() {
        return clientID;
    }

    public void setClientID(String clientID) {
        this.clientID = clientID;
    }

    public String getDefaultTopic() {
        return defaultTopic;
    }

    public void setDefaultTopic(String defaultTopic) {
        this.defaultTopic = defaultTopic;
    }

    public int getTimeout() {
        return timeout;
    }

    public void setTimeout(int timeout) {
        this.timeout = timeout;
    }

    public int getKeepalive() {
        return keepalive;
    }

    public void setKeepalive(int keepalive) {
        this.keepalive = keepalive;
    }
}

package com.ruoyi.web.controller.Mqtt;

import org.eclipse.paho.client.mqttv3.*;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import com.ruoyi.web.controller.Mqtt.MqttPushClient；




/**
 *
 * @author bam
 * 2020年3月5日
 * MqttPushClient.java
 *
 */
@Component
public class MqttPushClient {
    private static final Logger logger = LoggerFactory.getLogger(com.ruoyi.web.controller.Mqtt.MqttPushClient.class);

    @Autowired
    private com.ruoyi.web.controller.Mqtt.PushCallback pushCallback;

    @Value("${spring.mqtt.default-topic}")
    private String topic ;

    private static MqttClient client;

    private static MqttClient getClient() {
        return client;
    }

    private static void setClient(MqttClient client) {
        com.ruoyi.web.controller.Mqtt.MqttPushClient.client = client;
    }

    /**
     * 客户端连接
     *
     * @param host      ip+端口
     * @param clientID  客户端Id
     * @param username  用户名
     * @param password  密码
     * @param timeout   超时时间
     * @param keepalive 保留数
     */
    public void connect(String host, String clientID, String username, String password, int timeout, int keepalive) {
        MqttClient client;
        try {
            client = new MqttClient(host, clientID, new MemoryPersistence());
            MqttConnectOptions options = new MqttConnectOptions();
            options.setAutomaticReconnect(true);
            options.setCleanSession(true);
            options.setUserName(username);
            options.setPassword(password.toCharArray());
            options.setConnectionTimeout(timeout);
            options.setKeepAliveInterval(keepalive);
            com.ruoyi.web.controller.Mqtt.MqttPushClient.setClient(client);
            subscribe(topic,2);
            try {
                client.setCallback(pushCallback);
                client.connect(options);
            } catch (Exception e) {
                try {
                    client.reconnect();
                }catch (Exception e1){
                    e1.printStackTrace();
                }
                e.printStackTrace();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 发布
     *
     * @param qos         连接方式
     * @param retained    是否保留
     * @param topic       主题
     * @param pushMessage 消息体
     */
    public void publish(int qos, boolean retained, String topic, String pushMessage) {
        MqttMessage message = new MqttMessage();
        message.setQos(qos);
        message.setRetained(retained);
        message.setPayload(pushMessage.getBytes());
        MqttTopic mTopic = MqttPushClient.getClient().getTopic(topic);
        if (null == mTopic) {
            logger.error("topic not exist");
        }
        MqttDeliveryToken token;
        try {
            logger.info(mTopic.toString());
            token = mTopic.publish(message);
            token.waitForCompletion();
        } catch (MqttPersistenceException e) {
            e.printStackTrace();
        } catch (MqttException e) {
            e.printStackTrace();
        }
    }

    /**
     * 订阅某个主题
     *
     * @param topic 主题
     * @param qos   连接方式
     */
    public void subscribe(String topic, int qos) {
        logger.info("开始订阅主题" + topic);
        try {
            MqttPushClient.getClient().subscribe(topic, qos);
        } catch (MqttException e) {
            e.printStackTrace();
        }
    }
}

package com.ruoyi.web.controller.Mqtt;

import com.alibaba.fastjson.JSONObject;
import com.ruoyi.web.controller.Mqtt.MqttPushClient;
import com.ruoyi.web.controller.Mqtt.MqttConfig;
import org.eclipse.paho.client.mqttv3.IMqttDeliveryToken;
import org.eclipse.paho.client.mqttv3.MqttCallback;
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import com.ruoyi.common.websocket.*;

import javax.annotation.Resource;
import java.lang.reflect.Method;


/**
 * @Classname PushCallback
 * @Description 消费监听类
 * @Date 2019/4/11 23:31
 * @Created by Jack
 */
@Component
public class PushCallback implements MqttCallback {
    private static final Logger logger = LoggerFactory.getLogger(MqttPushClient.class);

    @Autowired
    private MqttConfig mqttConfig;

    private static MqttClient client;

    @Resource
    private WebSocket webSocket;

    @Override
    public void connectionLost(Throwable throwable) {
        // 连接丢失后，一般在这里面进行重连
        logger.info("连接断开，可以做重连");
        if (null != client) {
            mqttConfig.getMqttPushClient();
        }
    }

    @Override
    public void messageArrived(String topic, MqttMessage mqttMessage) throws Exception {
        // subscribe后得到的消息会执行到这里面
        logger.info("接收消息主题 : " + topic);
        logger.info("接收消息Qos : " + mqttMessage.getQos());
        logger.info("接收消息内容 : " + new String(mqttMessage.getPayload()));

        String msg= new String(mqttMessage.getPayload());
        String data = JSONObject.parseObject(msg).getString("data");
//        webSocket.sendMessage(data);

    }

    @Override
    public void deliveryComplete(IMqttDeliveryToken iMqttDeliveryToken) {
        logger.info("消息发送成功---------" + iMqttDeliveryToken.isComplete());
    }
}