SpringBoot成長筆記（九）整合MQTT
阿新 • • 發佈：2018-12-21
環境
使用Apollo搭建mqtt的服務進行測試
配置
pom.xml檔案
<!--MQTT --> <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>
配置檔案
mqtt.server=127.0.0.1
mqtt.port=8021
mqtt.clientid=zzclientid
mqtt.serverid=zzservertid
mqtt.username=admin
mqtt.password=password
mqtt.topic=v1/Gps
程式碼
生產者
/** * MQTT生產者 * Created by MHm on 2018/3/9. */ public class MqttProducer { private static final MqttProducer mqttProducer = new MqttProducer(); private MqttProducer(){ } public static String HOST = "tcp://127.0.0.1:61613"; public static String TOPIC = "v1/AlertResp"; private static String CLIENTID = "zzservertid"; private MqttClient client; private MqttTopic topic; private String userName = "admin"; private String passWord = "password"; //訊息體 private MqttMessage message; private ScheduledExecutorService scheduler; public static MqttProducer getInstance(){ return mqttProducer; } public void init(Properties properties) { try { HOST = String.format("tcp://%s:%s", properties.getProperty("mqtt.server"), properties.getProperty("mqtt.port")); CLIENTID = properties.getProperty("mqtt.serverid") + UUID.randomUUID().toString(); this.userName = properties.getProperty("mqtt.username"); this.passWord = properties.getProperty("mqtt.password"); this.TOPIC = properties.getProperty("mqtt.topic"); } catch (Exception e) { LogUtil.error(e.getMessage()); } try { client = new MqttClient(HOST, CLIENTID, new MemoryPersistence()); } catch (MqttException e) { e.printStackTrace(); } connect(); } /** * 連線伺服器 */ private void connect() { MqttConnectOptions options = new MqttConnectOptions(); options.setCleanSession(false); options.setUserName(userName); options.setPassword(passWord.toCharArray()); // 設定超時時間 options.setConnectionTimeout(10); // 設定會話心跳時間 options.setKeepAliveInterval(20); try { client.connect(options); topic = client.getTopic(TOPIC); } catch (Exception e) { e.printStackTrace(); } } public void setCallback(MqttCallback callback) { // 設定回撥 client.setCallback(callback); } /** * 訊息釋出 * * @param topic * @param message * @throws MqttPersistenceException * @throws MqttException */ public void publish(MqttTopic topic, MqttMessage message) throws MqttPersistenceException, MqttException { MqttDeliveryToken token = topic.publish(message); token.waitForCompletion(); LogUtil.info("message is published completely! " + token.isComplete() + " topic:" + topic.getName() + " Message:" + new String(message.getPayload())); } /** * 訊息釋出 * * @param topic * @param message * @throws MqttPersistenceException * @throws MqttException */ public void publish(String topic, String message) throws MqttPersistenceException, MqttException { if (!client.isConnected()){ client.connect(); } MqttTopic mqttTopic = client.getTopic(topic); MqttMessage mqttMessage = new MqttMessage(); mqttMessage.setQos(2); mqttMessage.setRetained(false); try { mqttMessage.setPayload(message.getBytes("UTF-8")); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } MqttDeliveryToken token = mqttTopic.publish(mqttMessage); token.waitForCompletion(); LogUtil.info("message is published completely! " + token.isComplete()); } /** * 通過定時器檢查斷線重連重連 */ public void startReconnect() { scheduler = Executors.newSingleThreadScheduledExecutor(); scheduler.scheduleAtFixedRate(new Runnable() { @Override public void run() { LogUtil.info("客戶端重連"); if (!client.isConnected()) { connect(); } } }, 0 * 1000, 10 * 1000, TimeUnit.MILLISECONDS); } public static void main(String[] args) throws MqttException { // Properties properties = LoadProperties.getProperties("mqtt.properties"); // MqttProducer server = MqttProducer.getInstance(); // server.init(properties); // // server.message = new MqttMessage(); // server.message.setQos(2); // server.message.setRetained(true); // server.setCallback(new ConnectionCallback(server)); // // for (int i = 0; i < 10000; i++) { // server.message.setPayload(("給客戶端124推送的資訊" + i).getBytes()); // server.publish(server.topic, server.message); // try { // Thread.sleep(1000); // } catch (InterruptedException e) { // e.printStackTrace(); // } // } // LogUtil.info(server.message.isRetained() + "------ratained狀態"); // Properties p = LoadProperties.getProperties("mqtt.properties"); // MqttProducer server = MqttProducer.getInstance(); // server.init(p); // for (int i = 0; i < 10000; i++) { // try { // server.publish(server.TOPIC, "給客戶端124推送的資訊" + i); // } catch (MqttException e) { // e.printStackTrace(); // } // try { // Thread.sleep(1000); // } catch (InterruptedException e) { // e.printStackTrace(); // } // } } }
消費者
/** * MQTT消費者 * Created by MHm on 2018/3/9. */ public class MqttConsumer { public String HOST = "tcp://127.0.0.1:61613"; private String clientId = "server"; private String topic = "v1/Gps"; private MqttClient client; private MqttConnectOptions options; private String userName = "admin"; private String passWord = "password"; private ScheduledExecutorService scheduler; public MqttConsumer(String propertiesName) throws MqttException { this.initProperties(propertiesName); client = new MqttClient(HOST, clientId, new MemoryPersistence()); init(); } private void initProperties(String propertiesName) { try { Properties mqttProperties = LoadProperties .getProperties(propertiesName); HOST = String.format("tcp://%s:%s", mqttProperties.getProperty("mqtt.server"), mqttProperties.getProperty("mqtt.port")); this.userName = mqttProperties.getProperty("mqtt.username"); this.passWord = mqttProperties.getProperty("mqtt.password"); this.clientId = mqttProperties.getProperty("mqtt.clientid") + UUID.randomUUID().toString(); this.topic = mqttProperties.getProperty("mqtt.topic"); } catch (Exception e) { LogUtil.error(e.getMessage()); } } private void init() { try { // MQTT的連線設定 options = new MqttConnectOptions(); // 設定是否清空session,這裡如果設定為false表示伺服器會保留客戶端的連線記錄，這裡設定為true表示每次連線到伺服器都以新的身份連線 options.setCleanSession(true); // 設定連線的使用者名稱 options.setUserName(userName); // 設定連線的密碼 options.setPassword(passWord.toCharArray()); // 設定超時時間 單位為秒 options.setConnectionTimeout(100); // 設定會話心跳時間 單位為秒 伺服器會每隔1.5*20秒的時間向客戶端傳送個訊息判斷客戶端是否線上，但這個方法並沒有重連的機制 options.setKeepAliveInterval(20); // MqttTopic topic = client.getTopic(TOPIC); // setWill方法，如果專案中需要知道客戶端是否掉線可以呼叫該方法。設定最終埠的通知訊息 // options.setWill(topic, "close".getBytes(), 2, true); } catch (Exception e) { e.printStackTrace(); } } /** * 訂閱訊息 */ public void connect() { try { client.connect(options); // 訂閱訊息 int[] Qos = { 1 }; String[] topic1 = { this.topic }; client.subscribe(topic1, Qos); } catch (MqttSecurityException e) { e.printStackTrace(); } catch (MqttException e) { e.printStackTrace(); } } public void setCallback(MqttCallback callback) { // 設定回撥 client.setCallback(callback); } /** * 通過定時器檢查斷線重連重連 */ public void startReconnect() { if (scheduler == null) { scheduler = Executors.newSingleThreadScheduledExecutor(); scheduler.scheduleAtFixedRate(new Runnable() { @Override public void run() { if (!client.isConnected()) { LogUtil.info("mqtt client start reconnect..."); connect(); } } }, 0 * 1000, 10 * 1000, TimeUnit.MILLISECONDS); } } public String getClientId() { return clientId; } public void setClientId(String clientId) { this.clientId = clientId; } public static void main(String[] args) throws MqttException { MqttConsumer client = new MqttConsumer("mqtt.properties"); client.setCallback(new PushCallback(client)); client.connect(); } }
回撥類
/**
* 客戶端訊息推送及重連
* Created by MHm on 2018/3/9.
*/
public class PushCallback implements MqttCallback {
private MqttConsumer consumer;
public PushCallback(MqttConsumer consumer) {
this.consumer = consumer;
}
@Override
public void connectionLost(Throwable throwable) {
LogUtil.warn("mqtt connection lost...");
consumer.startReconnect();
}
/**
* @param topic
* @param mqttMessage
* @throws Exception
*/
@Override
public void messageArrived(String topic, MqttMessage mqttMessage) throws Exception {
// LogUtil.debug("接收訊息主題 : " + topic);
// LogUtil.debug("接收訊息Qos : " + mqttMessage.getQos());
LogUtil.debug("####gps : " + new String(mqttMessage.getPayload()));
//接收到的訊息傳送到kafka
KafkaServer.getIntance().sendMessage(KafkaConsts.KAFKA_TOPIC_DATA,new String(mqttMessage.getPayload()));
}
/**
* 接收到已經發布的 QoS 1 或 QoS 2 訊息的傳遞令牌時呼叫。
*
* @param iMqttDeliveryToken
*/
@Override
public void deliveryComplete(IMqttDeliveryToken iMqttDeliveryToken) {
LogUtil.info("mqtt deliveryComplete...");
}
}