spring boot 集成mqtt
1.pom文件中添加依赖
<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.eclipse.paho</groupId>
<artifactId>org.eclipse.paho.client.mqttv3</artifactId>
<version>1.2.0</version>
</dependency>
2.yml文件中添加配置
mqtt: username: admin # 账号 password: admin # 密码 host-url: tcp://localhost:1883 # mqtt连接tcp地址 client-id: ${random.value} # 客户端Id，不能相同，采用随机数 default-topic: test # 默认主题 timeout: 300 # 超时时间 keepalive: 100 # 保持连接数
3.mqtt配置文件
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 MtqqEntity * @Description mqtt配置信息 */ @Component @ConfigurationProperties("spring.mqtt") public class MqttConfig { @Autowired private MqttPushClient mqttPushClient; /** * 用户名 */ 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; 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;} @Bean public MqttPushClient getMqttPushClient() { mqttPushClient.connect(hostUrl, clientId, username, password, timeout, keepalive); // 以/#结尾表示订阅所有以test开头的主题 mqttPushClient.subscribe("test/#", 0); return mqttPushClient; } }
4.mqtt客户端发布文件
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.stereotype.Component; /** * @Classname MqttPushClient * @Description mqtt推送客户端 */ @Component public class MqttPushClient { private static final Logger logger = LoggerFactory.getLogger(MqttPushClient.class); @Autowired private PushCallback pushCallback; private static MqttClient client; private static MqttClient getClient() { return client; } private static void setClient(MqttClient client) { 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.setCleanSession(true); options.setUserName(username); options.setPassword(password.toCharArray()); options.setConnectionTimeout(timeout); options.setKeepAliveInterval(keepalive); MqttPushClient.setClient(client); try { client.setCallback(pushCallback); client.connect(options); } catch (Exception e) { 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 { 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(); } } }
5.mqtt客户端订阅
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; /** * @Classname PushCallback * @Description 消费监听类 */ @Component public class PushCallback implements MqttCallback { private static final Logger logger = LoggerFactory.getLogger(MqttPushClient.class); @Autowired private MqttConfig mqttConfig; private static MqttClient client; @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 (client == null || !client.isConnected()) { 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())); } @Override public void deliveryComplete(IMqttDeliveryToken iMqttDeliveryToken) { logger.info("deliveryComplete---------" + iMqttDeliveryToken.isComplete()); } }
6.测试
import io.swagger.annotations.Api; import io.swagger.annotations.ApiImplicitParam; import io.swagger.annotations.ApiOperation; import org.springframework.web.bind.annotation.*; import org.springframework.beans.factory.annotation.Autowired; /** * swagger 用户测试方法 * */ @Api("mqtt测试") @RestController @RequestMapping("/test/mqtt") public class MqttController extends BaseController { @Autowired private MqttPushClient mqttPushClient; @ApiOperation(value = "发布主题", notes = "测试发布主题") @GetMapping(value = "/publishTopic") public StringpublishTopic() { mqttPushClient.publish(0,false,"test/test","测试"); return "success"; } }
