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Code  ›  SpringBoot 集成Mqtt，protobuf服务端搭建
protobuf topic mqtt mosquitto
https://www.jianshu.com/p/e21caf8338b8
踏实的登山鞋
2 年前
  • Publisher 本质是Mqtt client ，用于发布server端消息到broker
  • Subscriber 本质是Mqtt client ，用于从broker订阅client端消息
  • Client side
  • Publisher用于发布client端消息到broker
  • Subscriber用于从broker订阅server端的消息
  • Client 用于发送RestFul 请求给Application Server触发消息pub/sub

    • 总结 ：从结构上Broker算是Mqtt的本质上的Server端，从业务上讲封装了Mqtt Client pub/sub的Application server和Broker共同构成了业务上的Server端

    安装mosquitto及基本使用 

    # Install Mosquitto Broker
sudo apt-get update
sudo apt-get install mosquitto
# Install the Clients 
sudo apt-get install mosquitto-clients

    开启、停止查看状态
    

    # 查看状态
sudo service mosquitto status
# 使用默认配置打开mosquitto, 使用-v打开log功能
sudo mosquitto -c /etc/mosquitto/mosquitto.conf -v
sudo service mosquitto stop
sudo service mosquitto start

    使用mosquitto测试pub/sub
    

    注意 pub和sub的clientid不能相同，相同会刷屏。
    

    # 简单测试发布。 -h host -t topic -m message
mosquitto_pub -h localhost -t mqtt-test -m 'hello mqtt'
# 简单测试订阅。
mosquitto_sub -h localhost -t mqtt-test
# 发布设置用户密码 -u user -P password 
mosquitto_pub -u admin -P admin -h localhost -t mqtt/loop/message -m 'test mqtt'
mosquitto_sub -u admin -P admin -h localhost -t mqtt/loop/message
# 指定发布clientid -i （id to use for this client）
mosquitto_sub -u admin -P admin -i shuai-ubuntu-test -h localhost -t mqtt/loop/message
mosquitto_pub -u admin -P admin -i shuai-ubuntu-test-client -h localhost -t mqtt/loop/message -m 'test mqtt client'

    查看broker的log
    

    mosquitto的默认log 地址是：/var/log/mosquitto/xxx.log
    

    tailf /var/log/mosquitto/mosquitto.log

    构建Java-Mqtt-Server(Springboot + Mqtt)
    

    requirement依赖
    

    mosquitto broker
    

    可以使用Eclipse公开的broker，据说底层也是mosquitto。地址为iot.eclipse.org
    

    可以部署安装mosquitto(本文方案)
    

  • springboot (2.1.5.RELEASE)
    • 

  • Eclipse Paho
    • 

  • curl/postman
    • 

    构建springboot项目
    

    1. 使用idea springboot initializer 初始化springboot工程
    

    使用springboot版本2.1.5.RELEASE
    

    2. pom中添加
    

    <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-integration</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.integration</groupId>
    <artifactId>spring-integration-stream</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.integration</groupId>
    <artifactId>spring-integration-mqtt</artifactId>
</dependency>
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.16.10</version>
    <scope>provided</scope>
</dependency>

    3. MQTT Configuration
    

  • 配置broker地址，
    • 

  • 是否使用ssl，
    • 

    public abstract class MQTTConfig {
    protected final String broker = "10.156.2.132";
    protected final int qos = 2;
    protected Boolean hasSSL = false; /* By default SSL is disabled */
    protected Integer port = 1883; /* Default port */
    protected final String userName = "admin";
    protected final String password = "admin";
    protected final String TCP = "tcp://";
    protected final String SSL = "ssl://";
     * Custom Configuration
     * @param broker
     * @param port
     * @param ssl
     * @param withUserNamePass
    protected abstract void config(String broker, Integer port, Boolean ssl, Boolean withUserNamePass);
     * Default Configuration
    protected abstract void config();

    4. Publisher推送者
    

    public interface IMQTTPublisher {
     * Publish message
     * @param topic
     * @param String Message
    public void publishMessage(String topic, String message);
     * Disconnect MQTT Client
    public void disconnect();
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.stereotype.Component;
@Component
public class MQTTPublisher extends MQTTConfig implements MqttCallback, IMQTTPublisher {
    private String brokerUrl = null;
    final private String colon = ":";
    final private String clientId = "mqtt_server_pub";
    private MqttClient mqttClient = null;
    private MqttConnectOptions connectionOptions = null;
    private MemoryPersistence persistence = null;
    private static final Logger logger = LoggerFactory.getLogger(MQTTPublisher.class);
     * Private default constructor
    private MQTTPublisher() {
        this.config();
     * Private constructor
    private MQTTPublisher(String broker, Integer port, Boolean ssl, Boolean withUserNamePass) {
        this.config(broker, port, ssl, withUserNamePass);
     * Factory method to get instance of MQTTPublisher
     * @return MQTTPublisher
    public static MQTTPublisher getInstance() {
        return new MQTTPublisher();
     * Factory method to get instance of MQTTPublisher
     * @param broker
     * @param port
     * @param ssl
     * @param withUserNamePass
     * @return MQTTPublisher
    public static MQTTPublisher getInstance(String broker, Integer port, Boolean ssl, Boolean withUserNamePass) {
        return new MQTTPublisher(broker, port, ssl, withUserNamePass);
     * (non-Javadoc)
     * @see
     * com.bjitgroup.jasmysp.mqtt.publisher.MQTTPublisherBase#configurePublisher()
    @Override
    protected void config() {
        this.brokerUrl = this.TCP + this.broker + colon + this.port;
        this.persistence = new MemoryPersistence();
        this.connectionOptions = new MqttConnectOptions();
        try {
            this.mqttClient = new MqttClient(brokerUrl, clientId, persistence);
            this.connectionOptions.setCleanSession(true);
            this.mqttClient.connect(this.connectionOptions);
            this.mqttClient.setCallback(this);
        } catch (MqttException me) {
            logger.error("ERROR", me);
     * (non-Javadoc)
     * @see
     * com.bjitgroup.jasmysp.mqtt.publisher.MQTTPublisherBase#configurePublisher(
     * java.lang.String, java.lang.Integer, java.lang.Boolean, java.lang.Boolean)
    @Override
    protected void config(String broker, Integer port, Boolean ssl, Boolean withUserNamePass) {
        String protocal = this.TCP;
        if (true == ssl) {
            protocal = this.SSL;
        this.brokerUrl = protocal + this.broker + colon + port;
        this.persistence = new MemoryPersistence();
        this.connectionOptions = new MqttConnectOptions();
        try {
            this.mqttClient = new MqttClient(brokerUrl, clientId, persistence);
            this.connectionOptions.setCleanSession(true);
            if (true == withUserNamePass) {
                if (password != null) {
                    this.connectionOptions.setPassword(this.password.toCharArray());
                if (userName != null) {
                    this.connectionOptions.setUserName(this.userName);
            this.mqttClient.connect(this.connectionOptions);
            this.mqttClient.setCallback(this);
        } catch (MqttException me) {
            logger.error("ERROR", me);
     * (non-Javadoc)
     * @see com.monirthought.mqtt.publisher.MQTTPublisherBase#publishMessage(java.lang.String, java.lang.String)
    @Override
    public void publishMessage(String topic, String message) {
        try {
            MqttMessage mqttmessage = new MqttMessage(message.getBytes());
            mqttmessage.setQos(this.qos);
            this.mqttClient.publish(topic, mqttmessage);
        } catch (MqttException me) {
            logger.error("ERROR", me);
     * (non-Javadoc)
     * @see org.eclipse.paho.client.mqttv3.MqttCallback#connectionLost(java.lang.Throwable)
    @Override
    public void connectionLost(Throwable arg0) {
        logger.info("Connection Lost");
     * (non-Javadoc)
     * @see org.eclipse.paho.client.mqttv3.MqttCallback#deliveryComplete(org.eclipse.paho.client.mqttv3.IMqttDeliveryToken)
    @Override
    public void deliveryComplete(IMqttDeliveryToken arg0) {
        logger.info("delivery completed");
     * (non-Javadoc)
     * @see org.eclipse.paho.client.mqttv3.MqttCallback#messageArrived(java.lang.String, org.eclipse.paho.client.mqttv3.MqttMessage)
    @Override
    public void messageArrived(String arg0, MqttMessage arg1) throws Exception {
        // Leave it blank for Publisher
     * (non-Javadoc)
     * @see com.monirthought.mqtt.publisher.MQTTPublisherBase#disconnect()
    @Override
    public void disconnect() {
        try {
            this.mqttClient.disconnect();
        } catch (MqttException me) {
            logger.error("ERROR", me);

    5. Subscriber 订阅者
    

    import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public interface IMQTTSubscriber {
    public static final Logger logger = LoggerFactory.getLogger(IMQTTSubscriber.class);
     * Subscribe message
     * @param topic
     * @param jasonMessage
    public void subscribeMessage(String topic);
     * Disconnect MQTT Client
    public void disconnect();

    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.stereotype.Component;
import java.sql.Timestamp;
@Component
public class MQTTSubscriber extends MQTTConfig implements MqttCallback, IMQTTSubscriber {
    private String brokerUrl = null;
    final private String colon = ":";
    final private String clientId = "mqtt_server_sub";
    private MqttClient mqttClient = null;
    private MqttConnectOptions connectionOptions = null;
    private MemoryPersistence persistence = null;
    private static final Logger logger = LoggerFactory.getLogger(MQTTSubscriber.class);
    public MQTTSubscriber() {
        this.config();
     * (non-Javadoc)
     * @see org.eclipse.paho.client.mqttv3.MqttCallback#connectionLost(java.lang.
     * Throwable)
    @Override
    public void connectionLost(Throwable cause) {
        logger.info("Connection Lost");
     * (non-Javadoc)
     * @see
     * org.eclipse.paho.client.mqttv3.MqttCallback#messageArrived(java.lang.String,
     * org.eclipse.paho.client.mqttv3.MqttMessage)
    @Override
    public void messageArrived(String topic, MqttMessage message) throws Exception {
        // Called when a message arrives from the server that matches any
        // subscription made by the client
        String time = new Timestamp(System.currentTimeMillis()).toString();
        System.out.println();
        System.out.println("***********************************************************************");
        System.out.println("Message Arrived at Time: " + time + "  Topic: " + topic + "  Message: "
                + new String(message.getPayload()));
        System.out.println("***********************************************************************");
        System.out.println();
     * (non-Javadoc)
     * @see
     * org.eclipse.paho.client.mqttv3.MqttCallback#deliveryComplete(org.eclipse.paho
     * .client.mqttv3.IMqttDeliveryToken)
    @Override
    public void deliveryComplete(IMqttDeliveryToken token) {
        // Leave it blank for subscriber
     * (non-Javadoc)
     * @see
     * com.monirthought.mqtt.subscriber.MQTTSubscriberBase#subscribeMessage(java.
     * lang.String)
    @Override
    public void subscribeMessage(String topic) {
        try {
            this.mqttClient.subscribe(topic, this.qos);
        } catch (MqttException me) {
            me.printStackTrace();
     * (non-Javadoc)
     * @see com.monirthought.mqtt.subscriber.MQTTSubscriberBase#disconnect()
    public void disconnect() {
        try {
            this.mqttClient.disconnect();
        } catch (MqttException me) {
            logger.error("ERROR", me);
     * (non-Javadoc)
     * @see com.monirthought.config.MQTTConfig#config(java.lang.String,
     * java.lang.Integer, java.lang.Boolean, java.lang.Boolean)
    @Override
    protected void config(String broker, Integer port, Boolean ssl, Boolean withUserNamePass) {
        String protocal = this.TCP;
        if (true == ssl) {
            protocal = this.SSL;
        this.brokerUrl = protocal + this.broker + colon + port;
        this.persistence = new MemoryPersistence();
        this.connectionOptions = new MqttConnectOptions();
        try {
            this.mqttClient = new MqttClient(brokerUrl, clientId, persistence);
            this.connectionOptions.setCleanSession(true);
            if (true == withUserNamePass) {
                if (password != null) {
                    this.connectionOptions.setPassword(this.password.toCharArray());
                if (userName != null) {
                    this.connectionOptions.setUserName(this.userName);
            this.mqttClient.connect(this.connectionOptions);
            this.mqttClient.setCallback(this);
        } catch (MqttException me) {
            me.printStackTrace();
     * (non-Javadoc)
     * @see com.monirthought.config.MQTTConfig#config()
    @Override
    protected void config() {
        this.brokerUrl = this.TCP + this.broker + colon + this.port;
        this.persistence = new MemoryPersistence();
        this.connectionOptions = new MqttConnectOptions();
        try {
            this.mqttClient = new MqttClient(brokerUrl, clientId, persistence);
            this.connectionOptions.setCleanSession(true);
            this.mqttClient.connect(this.connectionOptions);
            this.mqttClient.setCallback(this);
        } catch (MqttException me) {
            me.printStackTrace();

    6. 构建 RestFul接口
    

    构建Controller
    

    import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import javax.annotation.PostConstruct;
@Slf4j
@RestController
public class DemoRestController {
    public static String TOPIC_LOOP_TEST = "mqtt/loop/message";
        @Autowired
    IMQTTPublisher publisher;
    @Autowired
    IMQTTSubscriber subscriber;
    @PostConstruct
    public void init() {
        subscriber.subscribeMessage(TOPIC_LOOP_TEST);    
    @RequestMapping(value = "/mqtt/loop/message", method = RequestMethod.POST)
    public String index(@RequestBody String data) {
        publisher.publishMessage(TOPIC_LOOP_TEST, data);
        return "Success";

    7. 使用curl命令进行api调用测试
    

    ❯ curl -X POST "http://127.0.0.1:8080/mqtt/loop/message" -d "test"
Success%
# springboot 窗口中可以看到自己sub的回显
***********************************************************************
Message Arrived at Time: 2019-05-21 16:11:13.675  Topic: mqtt/loop/message  Message: test=
***********************************************************************

    也可以使用postman 调用8080 端口调试。
    

    构建Java-Mqtt-Server (Springboot + Mqtt +protobuf)
    

    在现有基础上添加protobuf包装pub/sub 消息
    

    1. proto文件
    

    将.proto文件放到src/main/proto/下
    

    2. 使用maven生成protobuf java代码
    

    pom中properties中添加
    

    <properties>
    <java.version>1.8</java.version>
    <grpc.version>1.6.1</grpc.version>
    <protobuf.version>3.3.0</protobuf.version>
</properties>

    pom dependencies中添加
    

    <dependency>
            <groupId>io.grpc</groupId>
            <artifactId>grpc-netty</artifactId>
            <version>${grpc.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>io.grpc</groupId>
            <artifactId>grpc-protobuf</artifactId>
            <version>${grpc.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>io.grpc</groupId>
            <artifactId>grpc-stub</artifactId>
            <version>${grpc.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.google.protobuf</groupId>
            <artifactId>protobuf-java</artifactId>
            <version>${protobuf.version}</version>
        </dependency>

    pom build中添加，pom plugins中添加
    

    <build>
        <!--protobuf ext-->
        <extensions>
            <extension>
                <groupId>kr.motd.maven</groupId>
                <artifactId>os-maven-plugin</artifactId>
                <version>1.5.0.Final</version>
            </extension>
        </extensions>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.xolstice.maven.plugins</groupId>
                <artifactId>protobuf-maven-plugin</artifactId>
                <version>0.5.0</version>
                <configuration>
                    <protocArtifact>com.google.protobuf:protoc:${protobuf.version}:exe:${os.detected.classifier}</protocArtifact>
                    <pluginId>grpc-java</pluginId>
                    <pluginArtifact>io.grpc:protoc-gen-grpc-java:${grpc.version}:exe:${os.detected.classifier}</pluginArtifact>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>compile</goal>
                            <goal>compile-custom</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    使用IDE中右侧Maven Projects -> Lifecycle ->compile 生成java对应的protobuf文件
    

    生成的路径在：target/generated-sources/protobuf/java/对应的包名下
    

    3. 使用proto封装mqtt message
    

    使用Proto中的newBuilder构建builder。使用builder中的set方法设置proto中的参数，例如：
    

    KylinProto.Group.Builder builder = KylinProto.Group.newBuilder();
KylinProto.Group group = builder.setThreshold(85.f)
     
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