SpringBoot 连接 Mqtt代码实现

最新推荐文章于 2025-05-09 14:55:58 发布

鲁元

最新推荐文章于 2025-05-09 14:55:58 发布

阅读量362

点赞数

本文链接：https://blog.youkuaiyun.com/weixin_36292503/article/details/121832245

版权

本文详细介绍了如何在SpringBoot项目中配置并使用Mqtt，包括pom依赖引入、核心逻辑代码展示如MqttBeanConfig、MqttCallback等类的实现，以及配置文件application.yml的设置，和项目的目录结构。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

一、引入pom

  <!--MQTT-->
        <dependency>
            <groupId>org.eclipse.paho</groupId>
            <artifactId>org.eclipse.paho.client.mqttv3</artifactId>
            <version>1.2.5</version>
        </dependency>
        <!--MQTT-->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.13</version>
        </dependency>
        <!-- hutool -->
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.7.16</version>
        </dependency>

二、逻辑代码：

MqttBeanConfig

package com.boot.voice.component.mqtt;

import cn.hutool.crypto.SecureUtil;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import static com.boot.voice.component.mqtt.Tools.macSignature;
import static org.eclipse.paho.client.mqttv3.MqttConnectOptions.MQTT_VERSION_3_1_1;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

@Configuration
public class MqttBeanConfig {
   
    @Autowired
    private MqttConfig mqttConfig;

    @Bean
    public MqttConnectOptions getMqttConnectOptions() throws NoSuchAlgorithmException, InvalidKeyException {
   
        MqttConnectOptions mqttConnectOptions = new MqttConnectOptions();
        if (mqttConfig.getIsAliYun()) {
   
            //组装用户名密码
            mqttConnectOptions.setUserName("Signature|" + mqttConfig.getAccessKey() + "|" + mqttConfig.getInstanceId());
            //密码签名
            mqttConnectOptions.setPassword(macSignature(mqttConfig.getGroupId()+"@@@"+mqttConfig.getClientId(), mqttConfig.getSecretKey()).toCharArray());
        }else{
   
            //组装用户名密码
            mqttConnectOptions.setUserName(mqttConfig.getUsername());
            //密码签名
            mqttConnectOptions.setPassword(mqttConfig.getPassword().toCharArray());
        }
        mqttConnectOptions.setCleanSession(true);
        mqttConnectOptions.setKeepAliveInterval(90);
        mqttConnectOptions.setAutomaticReconnect(true);
        mqttConnectOptions.setMqttVersion(MQTT_VERSION_3_1_1);
        //连接超时时间
        mqttConnectOptions.setConnectionTimeout(5000);
        mqttConnectOptions.setKeepAliveInterval(2);
        return mqttConnectOptions;
    }
    @Bean(initMethod = "start", destroyMethod = "shutdown")
    public MqttClientBean getClient() {
   
        return new MqttClientBean();
    }

}

MqttCallback

package com.boot.voice.component.mqtt;

import lombok.extern.slf4j.Slf4j;
import org.eclipse.paho.client.mqttv3.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Primary;
import org.springframework.stereotype.Component;


@Slf4j
@Primary
@Component
public class MqttCallback implements MqttCallbackExtended {
   
    @Autowired
    private MqttClientBean mqttClientBean;
    @Autowired
    private MqttConfig mqttConfig;

    @Override
    public void connectComplete(boolean b, String s) {
   
        /*
         * 客户端连接成功
         */
        log.info("MQTT客户端连接成功!!!");
    }

    @Override
    public void connectionLost(Throwable throwable) {
   
        throwable.printStackTrace();
    }

    @Override
    public</